LOCAL CLIMATOLOGICAL DATA Monthly Summary
May 2018
Station: KPWR Portsmouth, Virginia Latitude: 36° 59' 09" N Longitude: 76° 33' 00" W Elevation (ground): 13 feet Time Zone: Eastern +--+-------------------------------+----+---------+---------+--+-----------+--------------------+-----------------------------+------+ | | Temperature | |Deg. Days|Precip Ty| | Precip | Pressure | Wind |Solar | | +------+------+------+------+---+ Hu-+----+----+1 fog | S+-----+-----+ Adj. to Sea Level +----+----+---+-------+-------+------+ | | M | M | A | | |mid-| H | C |2 hvy fog| n| | Ice +------+------+------+ Avg| Res|Res| Peak |2Minute| Mean | | | a | i | v | | D | ity| e | o |3 thunder| o|Water| plts| | | | | | +---+---+---+---+ W | | | x | n | e | | e | | a | o |4 ice plt| w| | | | | | S | S | | S | | S | | a | | D| i | i | r | M | w | M | t | l |5 hail | | E | S | | | M | p | p | | p | | p | | t | | a| m | m | a | e | | e | i | i |6 glaze | C| q | n | M | M | e | e | e | D | e | D | e | D | t | | t| u | u | g | a | P | a | n | n |7 duststm| v| u | o | a | i | a | e | e | i | e | i | e | i | s | | e| m | m | e | n | t | n | g | g |8 smk, hz| r| v | w | x | n | n | d | d | r | d | r | d | r | m^2 | | | | | | | | | | |9 blw snw| | | | | | | | | | | | | | | | 1| 2 | 3 | 4A | 4B | 5 | 6 | 7 | 8 | 9 |10| 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18| 19| 20| 21| 22| 23 | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ |01| 83.0 | 45.6*| 64.3 | 64.9 | 43| 50| 0| 0|.........| 0| 0.00| 0.0| 30.21| 30.12|30.161| 0.2| 0.2|248| 18|WSW| 0| 0| | |02| 89.4 | 55.4 | 72.4 | 72.5 | 54| 56| 0| 7|.........| 0| 0.00| 0.0| 30.23| 30.11|30.172| 0.7| 0.7|208| 21|SSW| 0| 0| | |03| 89.5 | 60.7 | 75.1 | 75.0 | 58| 58| 0| 11|.......8.| 0| 0.00| 0.0| 30.20| 30.07|30.137| 0.7| 0.6|197| 24|SSW| 0| 0| | |04| 89.6 | 63.5 | 76.6 | 75.9 | 61| 63| 0| 12|.........| 0| 0.00| 0.0| 30.11| 29.95|30.030| 1.2| 1.2|203| 27|SSW| 0| 0| | |05| 79.8 | 63.3 | 71.6 | 69.8 | 60| 74| 0| 7|.......8.| 0| 0.00| 0.0| 30.09| 30.00|30.051| 0.0| 0.0| 0| 22| NE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |06| 75.3 | 63.6 | 69.4 | 68.9 | 67| 94| 0| 5|1........| 0| 2.42| 0.0| 30.00| 29.80|29.873| 0.0| 0.0| 0| 7| NE| 0| 0| | |07| 65.8 | 57.3 | 61.6 | 61.2 | 58| 92| 3| 0|1........| 0| 0.32| 0.0| 30.11| 29.88|30.007| 0.0| 0.0| 0| 24|ENE| 0| 0| | |08| 61.9 | 56.2 | 59.1*| 58.6 | 57| 93| 6| 0|1........| 0| T | 0.0| 30.17| 30.09|30.140| 0.0| 0.0| 0| 22| NE| 0| 0| | |09| 69.0 | 56.6 | 62.8 | 62.0 | 59| 90| 2| 0|1........| 0| 0.01| 0.0| 30.13| 30.07|30.105| 0.0| 0.0| 0| 12|ENE| 0| 0| | |10| 84.9 | 53.1 | 69.0 | 67.7 | 62| 85| 0| 4|1.3......| 0| 0.68| 0.0| 30.08| 29.86|29.989| 0.3| 0.3|259| 28|WNW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |11| 86.0 | 61.3 | 73.7 | 72.5 | 63| 76| 0| 9|.........| 0| 0.01| 0.0| 30.07| 29.93|30.001| 0.0| 0.0| 0| 14| S| 0| 0| | |12| 93.4*| 67.1 | 80.3 | 80.0 | 68| 69| 0| 15|.........| 0| 0.00| 0.0| 30.09| 29.97|30.030| 0.8| 0.8|207| 19| SW| 0| 0| | |13| 81.2 | 64.8 | 73.0 | 73.4 | 65| 77| 0| 8|.........| 0| 0.00| 0.0| 30.06| 29.97|30.006| 0.0| 0.0| 0| 17| NE| 0| 0| | |14| 89.7 | 64.9 | 77.3 | 77.0 | 70| 79| 0| 13|..3......| 0| 0.32| 0.0| 30.09| 29.92|29.975| 0.3| 0.2|315| 39| NW| 0| 0| | |15| 87.9 | 64.6 | 76.3 | 76.5 | 71| 83| 0| 12|.........| 0| 0.01| 0.0| 30.02| 29.92|29.978| 0.7| 0.7|203| 27|SSW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |16| 85.8 | 70.6 | 78.2 | 76.6 | 73| 89| 0| 14|.........| 0| 0.28| 0.0| 30.01| 29.93|29.971| 0.0| 0.0| 0| 15| SE| 0| 0| | |17| 80.0 | 70.1 | 75.1 | 74.0 | 72| 94| 0| 10|1........| 0| 0.44| 0.0| 30.00| 29.92|29.963| 0.0| 0.0| 0| 12| NE| 0| 0| | |18| 82.9 | 71.3 | 77.1 | 75.6 | 74| 94| 0| 12|1........| 0| 0.16| 0.0| 30.12| 29.98|30.043| 0.0| 0.0| 0| 19| SW| 0| 0| | |19| 80.7 | 70.1 | 75.4 | 73.9 | 73| 98| 0| 11|1........| 0| 1.75| 0.0| 30.15| 30.08|30.117| 0.0| 0.0| 0| 25|SSW| 0| 0| | |20| 86.7 | 69.9 | 78.3 | 77.9 | 74| 88| 0| 14|1........| 0| 0.01| 0.0| 30.11| 30.02|30.068| 0.0| 0.0| 0| 24|SSW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |21| 80.3 | 66.6 | 73.4 | 72.0 | 69| 90| 0| 9|1......8.| 0| 0.01| 0.0| 30.15| 30.04|30.110| 0.3| 0.3| 45| 20| NE| 0| 0| | |22| 86.4 | 66.8 | 76.6 | 75.0 | 70| 86| 0| 12|1......8.| 0| T | 0.0| 30.13| 30.00|30.064| 0.0| 0.0| 0| 20|SSW| 0| 0| | |23| 86.8 | 70.8 | 78.8 | 78.2 | 71| 80| 0| 14|.........| 0| 0.00| 0.0| 30.06| 29.94|29.984| 0.0| 0.0| 0| 18|SSW| 0| 0| | |24| 84.1 | 63.8 | 73.9 | 74.9 | 63| 70| 0| 9|.........| 0| 0.00| 0.0| 30.16| 30.06|30.118| 0.0| 0.0| 0| 15| NE| 0| 0| | |25| 88.3 | 61.1 | 74.7 | 76.0 | 66| 74| 0| 10|1........| 0| 0.00| 0.0| 30.13| 29.95|30.046| 0.0| 0.0| 0| 16|SSW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |26| 90.3 | 70.1 | 80.2 | 80.7 | 73| 78| 0| 15|.........| 0| 0.00| 0.0| 29.96| 29.85|29.914| 0.0| 0.0| 0| 19|SSW| 0| 0| | |27| 91.0 | 73.0 | 82.0*| 81.6 | 73| 76| 0| 17|.......8.| 0| 0.00| 0.0| 30.01| 29.92|29.947| 0.0| 0.0| 0| 21|SSW| 0| 0| | |28| 86.6 | 66.7 | 76.6 | 74.8 | 72| 91| 0| 12|1........| 0| 3.13| 0.0| 30.03| 29.98|30.008| 0.0| 0.0| 0| 14|SSE| 0| 0| | |29| 81.1 | 68.8 | 74.9 | 74.3 | 73| 95| 0| 10|1........| 0| 0.24| 0.0| 30.00| 29.95|29.979| 0.0| 0.0| 0| 10| NE| 0| 0| | |30| 85.5 | 72.6 | 79.1 | 78.4 | 75| 91| 0| 15|1........| 0| 0.20| 0.0| 30.02| 29.95|29.985| 0.0| 0.0| 0| 15| NE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |31| 89.6 | 74.3 | 81.9 | 79.9 | 76| 90| 0| 17|1........| 0| 0.11| 0.0| 29.98| 29.87|29.932| 0.0| 0.0| 0| 19| S| 0| 0| | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- | +------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+ |2592.5|2004.6|------|------|---|----| 11| 304| Days |10.10| 0.0| 30.23| 29.80|30.029| 0.2| 0.1|211| 39| NW| 0| 0| ---- | +------+------+------+------+---+----+----+----+------------|+5.58" or 224% of normal +------+----+----+---+---+---+---+---+------+ | Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg | +------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+ | 83.7| 64.7| 74.2 | 73.5 | 67|81.3|----|----|≥.01 Inch 17|22.43| 16.3| 2 | 6 |------|----|----|---| 14 | 1+ | | + +5.9 +6.5 +6.2 +------+---+----+----+----+------------|+3.52" or 119% of normal +------+----+----+---+-------+-------+------+ | | Season |Snow, Ice | | | | Number of Days | to Date |≥1.0 Inch 0| Greatest in 24 Hours and Dates | Greatest Depth on Ground | +------------------+-----------------+----+----+------------+--------------+-----------------+ of Snow, Ice Pellets or Ice | | Max Temperature | Min Temperature |3219| 356|Thunder 2|Precipitation | Snow, Ice Plts | and Date | +--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+ | ≥90°F | ≤32°F | ≤32°F | ≤0°F |----|----|Heavy Fog 0| 3.37| 28-29| 0.0 | - | 0 | - | +--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+ | 7 | 0 | 0 | 0 |----|----| Clear 11 Partly Cloudy 9 Cloudy 11 | +--------+---------+--------+--------+----+----+------------------------------------------+ NOTES: Data in column 4A are (MAX+MIN) / 2, whereas data in columns 4B, 5, 6, 15, 16, 23 are means via continuous observations Units are: Temperature=°F, Wind=mph, Pressure=Inches Hg, Precipitation=inches. for 24 hours. Column 5: Dew point is calculated from temperature and humidity and is continuously averaged for 24 hours. Columns 7, 8: Degree Days heating base is 65°F, cooling base is 65°F. Data in columns 9, 10, 12 are entered manually by the station observer. Columns 17-18: Resultant wind is calculated by the vector sum of continuous wind observations. Column 23: Solar Radiation is measured in Watts/m^2 and is continuously averaged for 24 hours. Data in columns 4B, 5, 6, 15, 16, 23 are updated continuously, there by achieving a "true" mean. OBSERVER NOTES: FROPA: 5th, 22nd
STATION RECORDS:
The station monthly rainfall for May 2018 of 10.10" is the greatest May monthly rainfall total in the station database to 1977.
The top five May rainfall totals include: 1) 10.10" 2018 2) 9.49" 2012 3) 8.44" 2017 4) 8.06" 1988 5) 7.76" 1976.

4th - TEMPERATURE TIED Maximum 90 [previous 1987]
5th - TEMPERATURE Maximum 90 [previous 88 2012]
6th - RAINFALL 2.42" [previous 1.76" 2005]
12th - TEMPERATURE Maximum 93 [previous 90 2000]
14th - TEMPERATURE TIED Maximum 90 [previous 2010]
14th - WIND GUST 39 mph [previous 34mph 2000]
16th - TEMPERATURE Maximum Low 71 [previous 63 1984]
17th - TEMPERATURE TIED Maximum Low [previous 70 1990]
18th - TEMPERATURE TIED Maximum Low [previous 1995]
19th - TEMPERATURE TIED Maximum Low [previous 1996]
19th - RAINFALL 1.25" [previous 1.06" 1995]
23rd - TEMPERATURE Maximum low 71 [previous 70 1987]
27th - TEMPERATURE TIED Maximum low [previous 73 1991]
28th - RAINFALL 3.13" [previous 1.39" 2008]
30th - TEMPERATURE Maximum low 73 [previous 70 1987]

   MONTHLY AVERAGE MAXIMUM TEMP OF 83.7 WAS  5.9 ABOVE NORMAL
   MONTHLY AVERAGE MINIMUM TEMP OF 64.7 WAS  6.5 ABOVE NORMAL
   MONTHLY AVERAGE TEMPERATURE  OF 74.2 WAS  6.2 ABOVE NORMAL

   MAXIMUM TEMP:  93 ON THE 12th
   MINIMUM TEMP:  46 ON THE  1st

   DAYS WITH TEMPERATURES:
        MAXIMUM >= 90:   7
        MAXIMUM <= 32:   0
        MINIMUM <= 32:   0
        MINIMUM <=  0:   0

   HEATING DEGREE DAYS:   12.0 
   COOLING DEGREE DAYS:  297.0

   DAYS WITH HEATING DEGREE DAYS:    4
   DAYS WITH COOLING DEGREE DAYS:   27

   PRECIP TOTAL OF  10.10" WAS 5.58" ABOVE NORMAL (76% OF NORMAL)
   
   GREATEST DAILY RAINFALL:    3.13" on the 28th   
   GREATEST 24-HOUR RAINFALL:  3.37" on the 28th-29th

   DAYS WITH MEASUREABLE PRECIP: 17 OF 31 DAYS OR 54.84% 
   AVERAGE DAILY PRECIP: 0.33"
   NORMAL DAILY PRECIP:  0.15"
                                   
   DAYS WITH PRECIP >= 0.01"    17 
   DAYS WITH PRECIP >= 0.10"    12 
   DAYS WITH PRECIP >= 0.50"     4
   DAYS WITH PRECIP >= 1.00"     3

   DAYS WITH THUNDERSTORMS:   2   
   NUMBER OF THUNDERSTORMS:   2 

   DAYS WITH SNOW:     0  
   SNOWFALL TOTAL:   0.0" 
   SEASONAL SNOWFALL 2017-2018 (beginning November 2017): 16.4" 

   CLOUDY DAYS:          11
   PARTLY CLOUDY DAYS     9 
   SUNNY/CLEAR DAYS:     11
   DAYS WITH F/GF:       16
   DAYS WITH DENSE FOG:   0 
   DAYS WITH FROST:       0

   YEAR-TO-DATE

   YEARLY  AVERAGE MAXIMUM TEMP OF 63.1 WAS 1.2 ABOVE NORMAL
   YEARLY  AVERAGE MINIMUM TEMP OF 43.8 WAS 1.1 ABOVE NORMAL
   YEARLY  AVERAGE TEMPERATURE  OF 53.5 WAS 1.2 ABOVE NORMAL

   MAXIMUM TEMP:  93 on May 12th 
   MINIMUM TEMP:   7 on January 6th 

   DAYS WITH TEMPERATURES:
        MAXIMUM >= 90:    7
        MAXIMUM <= 32:    7
        MINIMUM <= 32:   33
        MINIMUM <=  0:    0

   HEATING DEGREE DAYS:   2087.0
   COOLING DEGREE DAYS:    345.0

   DAYS WITH HEATING DEGREE DAYS:  110
   DAYS WITH COOLING DEGREE DAYS:   40
                               
   PRECIP TOTAL OF 22.43" WAS 3.52" ABOVE NORMAL (119% OF NORMAL).

   GREATEST DAILY RAINFALL:     3.13" on May 28th  
   GREATEST 24-HOUR RAINFALL:   3.37" on May 28th - May 29th
   DAYS WITH MEASUREABLE PRECIP:  57 of 151 or 37.80%

   AVERAGE DAILY PRECIP: 0.15" 
   NORMAL DAILY PRECIP:  0.13"

   DAYS WITH PRECIP >= 0.01"    57
   DAYS WITH PRECIP >= 0.10"    40
   DAYS WITH PRECIP >= 0.50"    15
   DAYS WITH PRECIP >= 1.00"     5

   DAYS WITH THUNDERSTORMS:   2
   NUMBER OF THUNDERSTORMS:   2 
                                  
   DAYS WITH SNOW  (calendar year 2018):    8
   SNOWFALL TOTAL  (calendar year 2018): 16.4" 
   SEASONAL SNOW 2017-2018 (beginning November 2017):  16.4"
    
   CLOUDY DAYS:          47
   PARTLY CLOUDY DAYS:   45 
   SUNNY/CLEAR DAYS:     59
   DAYS WITH F/GF:       45 
   DAYS WITH DENSE FOG:   1
   DAYS WITH FROST:      31
OBSERVATIONS AT 3-HOUR INTERVALS
May 2018: KPWR Portsmouth, Virginia
+--+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | T | | | Wind | | | | T | | | Wind | | | | T | | | Wind | | | | | R | e | | % +--+---+---+ | | R | e | | % +--+---+---+ | | R | e | | % +--+---+---+ | | | | a | m | D | | D| | | | | a | m | D | | D| | | | | a | m | D | | D| | | | | S | P | i | p | e | H | i| | | S | P | i | p | e | H | i| | | S | P | i | p | e | H | i| | | | | u | r | n | e | w | u | r| | | u | r | n | e | w | u | r| | | u | r | n | e | w | u | r| | | | | n | e | f | r | | m | e| | | n | e | f | r | | m | e| | | n | e | f | r | | m | e| | | | | s | s | a | a | P | i | c| S | | s | s | a | a | P | i | c| S | | s | s | a | a | P | i | c| S | | | H| h | s | l | t | o | d | t| p | G | h | s | l | t | o | d | t| p | G | h | s | l | t | o | d | t| p | G | | o| i | u | l | u | i | i | i| e | u | i | u | l | u | i | i | i| e | u | i | u | l | u | i | i | i| e | u | | u| n | r | | r | n | t | o| e | s | n | r | | r | n | t | o| e | s | n | r | | r | n | t | o| e | s | | r| e | e | Rate| e | t | y | n| d | t | e | e | Rate| e | t | y | n| d | t | e | e | Rate| e | t | y | n| d | t | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 1 | MAY 2 | MAY 3 | | | | | |01| |30.13| 0.00| 54| 38| 55|20| 0| 4| |30.18| 0.00| 59| 54| 82|00| 0| 0| |30.16| 0.00| 67| 53| 61|22| 0| 10| |04| |30.13| 0.00| 50| 39| 67|00| 0| 0| |30.17| 0.00| 57| 51| 78|22| 0| 10| |30.16| 0.00| 64| 52| 65|20| 0| 18| |07| |30.17| 0.00| 46| 41| 81|00| 0| 0| |30.22| 0.00| 56| 51| 83|20| 0| 5| |30.20| 0.00| 61| 55| 79|22| 0| 11| |10| |30.21| 0.00| 65| 48| 53|27| 0| 4| |30.23| 0.00| 73| 58| 59|24| 0| 14| |30.19| 0.00| 75| 63| 65|22| 0| 15| |13| |30.18| 0.00| 77| 42| 29|06| 0| 13| |30.19| 0.00| 86| 59| 40|22| 0| 13| |30.14| 0.00| 85| 64| 49|20| 0| 24| |16| |30.13| 0.00| 83| 42| 24|20| 0| 14| |30.13| 0.00| 89| 53| 29|20| 4| 21| |30.09| 0.00| 89| 61| 39|18| 4| 17| |19| |30.14| 0.00| 81| 42| 25|27| 0| 11| |30.12| 0.00| 85| 55| 36|20| 4| 17| |30.07| 0.00| 84| 58| 41|20| 0| 14| |22| |30.17| 0.00| 64| 49| 58|00| 0| 0| |30.15| 0.00| 74| 54| 50|00| 0| 0| |30.11| 0.00| 74| 58| 58|22| 0| 7| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 4 | MAY 5 | MAY 6 | | | | | |01| |30.11| 0.00| 68| 61| 77|22| 0| 14| |30.01| 0.00| 69| 59| 72|20| 0| 15| |30.00| 0.00| 64| 62| 93|00| 0| 0| |04| |30.08| 0.00| 65| 60| 83|22| 0| 15| |30.01| 0.00| 66| 60| 79|18| 0| 16| |29.94| 0.12| 68| 67| 97|00| 0| 0| |07| |30.08| 0.00| 64| 60| 87|22| 0| 13| |30.05| 0.00| 64| 60| 88|24| 0| 4| |29.91| 1.06| 68| 67| 98|00| 0| 0| |10| |30.08| 0.00| 76| 64| 66|18| 0| 17| |30.09| 0.00| 75| 65| 72|00| 0| 0| |29.87| 0.02| 66| 66| 99|00| 0| 0| |13| |30.02| 0.00| 86| 65| 49|20| 4| 20| |30.07| 0.00| 80| 64| 58|06| 0| 13| |29.84| 0.00| 68| 68| 99|00| 0| 0| |16| |29.95| 0.00| 90| 62| 40|20| 4| 21| |30.06| 0.00| 73| 57| 57|04| 0| 18| |29.80| 0.00| 74| 68| 81|00| 0| 0| |19| |29.95| 0.00| 85| 59| 42|20| 4| 23| |30.05| 0.00| 69| 58| 69|06| 0| 7| |29.82| 0.00| 74| 68| 84|00| 0| 0| |22| |29.99| 0.00| 75| 63| 67|24| 0| 4| |30.06| 0.00| 65| 60| 86|00| 0| 0| |29.84| 0.00| 69| 68| 96|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 7 | MAY 8 | MAY 9 | | | | | |01| |29.90| 0.00| 65| 64| 96|04| 0| 6| |30.11| 0.00| 57| 54| 91|00| 0| 0| |30.12| 0.00| 57| 57| 99|00| 0| 4| |04| |29.88| 0.00| 64| 62| 95|06| 0| 14| |30.11| 0.00| 57| 55| 92|04| 0| 15| |30.10| 0.00| 57| 57| 99|00| 0| 0| |07| |29.94| 0.00| 62| 61| 94|04| 0| 5| |30.15| 0.00| 57| 55| 93|04| 0| 18| |30.12| 0.00| 58| 58|100|00| 0| 0| |10| |30.00| 0.00| 61| 60| 97|06| 0| 17| |30.17| 0.00| 59| 57| 92|04| 0| 22| |30.12| 0.00| 60| 59| 98|00| 0| 0| |13| |30.05| 0.09| 59| 58| 96|06| 0| 24| |30.16| 0.00| 61| 59| 92|04| 0| 18| |30.13| 0.00| 66| 61| 83|06| 0| 7| |16| |30.05| 0.00| 60| 57| 89|02| 0| 17| |30.14| 0.00| 61| 59| 91|06| 0| 14| |30.10| 0.00| 69| 61| 76|06| 0| 10| |19| |30.07| 0.00| 62| 56| 81|04| 0| 6| |30.14| 0.00| 60| 58| 91|02| 0| 14| |30.07| 0.00| 68| 61| 77|00| 0| 0| |22| |30.11| 0.00| 58| 55| 87|02| 0| 7| |30.15| 0.00| 58| 57| 97|06| 0| 18| |30.09| 0.00| 61| 58| 89|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 10 | MAY 11 | MAY 12 | | | | | |01| |30.08| 0.00| 57| 55| 96|00| 0| 0| |29.95| 0.00| 63| 63| 98|00| 0| 0| |30.08| 0.00| 69| 64| 85|11| 0| 5| |04| |30.06| 0.00| 54| 54| 97|00| 0| 0| |29.94| 0.00| 62| 62| 99|00| 0| 0| |30.05| 0.00| 68| 65| 91|00| 0| 0| |07| |30.05| 0.00| 55| 54| 99|00| 0| 0| |29.99| 0.00| 63| 63|100|00| 0| 0| |30.06| 0.00| 69| 66| 90|20| 0| 4| |10| |30.05| 0.00| 68| 65| 89|24| 0| 4| |30.02| 0.00| 73| 66| 79|27| 0| 5| |30.09| 0.00| 81| 69| 66|20| 0| 14| |13| |29.98| 0.00| 81| 70| 68|20| 0| 14| |30.02| 0.00| 81| 65| 59|06| 0| 7| |30.04| 0.00| 90| 72| 55|22| 0| 16| |16| |29.90| 0.00| 85| 71| 63|20| 0| 19| |29.99| 0.00| 85| 59| 41|06| 0| 12| |29.97| 0.00| 93| 72| 50|20| 4| 15| |19| |29.88| 0.00| 81| 68| 65|22| 0| 14| |30.01| 0.00| 81| 64| 56|18| 0| 14| |29.97| 0.00| 90| 70| 53|18| 0| 16| |22| |29.94| 0.06| 64| 63| 97|15| 0| 4| |30.06| 0.00| 72| 62| 70|13| 0| 5| |29.99| 0.00| 80| 68| 67|22| 0| 4| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 13 | MAY 14 | MAY 15 | | | | | |01| |30.01| 0.00| 75| 64| 68|24| 0| 4| |29.97| 0.00| 65| 64| 95|00| 0| 0| |30.00| 0.01| 67| 66| 97|00| 0| 0| |04| |29.99| 0.00| 72| 63| 73|00| 0| 0| |29.93| 0.00| 68| 65| 93|00| 0| 0| |29.97| 0.00| 65| 64| 98|00| 0| 0| |07| |30.01| 0.00| 69| 65| 87|20| 0| 4| |29.98| 0.00| 68| 66| 93|00| 0| 0| |30.02| 0.00| 68| 68|100|00| 0| 0| |10| |30.04| 0.00| 80| 69| 69|22| 0| 14| |29.99| 0.00| 80| 71| 74|24| 0| 14| |30.02| 0.00| 78| 74| 90|18| 0| 11| |13| |30.05| 0.00| 75| 66| 74|04| 0| 17| |29.98| 0.00| 88| 76| 68|22| 0| 6| |29.99| 0.00| 84| 74| 73|20| 4| 27| |16| |29.99| 0.00| 79| 68| 69|06| 0| 15| |29.94| 0.00| 90| 74| 60|04| 0| 10| |29.92| 0.00| 88| 74| 63|20| 4| 22| |19| |29.97| 0.00| 74| 66| 76|04| 0| 10| |29.93| 0.00| 86| 73| 67|13| 0| 13| |29.92| 0.00| 85| 74| 68|22| 0| 16| |22| |30.01| 0.00| 66| 63| 90|13| 0| 4| |30.09| 0.32| 71| 67| 86|31| 6| 39| |29.97| 0.00| 78| 71| 78|20| 0| 15| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 16 | MAY 17 | MAY 18 | | | | | |01| |29.99| 0.00| 75| 70| 87|20| 0| 6| |29.95| 0.00| 73| 71| 95|15| 0| 7| |30.00| 0.00| 71| 71| 99|00| 0| 0| |04| |29.99| 0.00| 72| 70| 93|00| 0| 0| |29.92| 0.00| 71| 70| 97|00| 0| 0| |29.98| 0.00| 71| 71|100|00| 0| 0| |07| |30.00| 0.00| 72| 71| 98|00| 0| 0| |29.95| 0.00| 71| 70| 98|00| 0| 0| |30.01| 0.00| 73| 73|100|00| 0| 0| |10| |30.00| 0.00| 82| 75| 79|24| 0| 11| |29.97| 0.00| 76| 72| 87|22| 0| 4| |30.04| 0.00| 77| 76| 96|06| 0| 4| |13| |29.98| 0.14| 80| 75| 84|18| 0| 5| |29.99| 0.28| 78| 74| 89|24| 0| 5| |30.06| 0.00| 81| 76| 85|18| 0| 10| |16| |29.93| 0.00| 79| 75| 89|06| 0| 6| |29.95| 0.09| 76| 74| 93|04| 0| 12| |30.04| 0.00| 80| 75| 84|13| 0| 12| |19| |29.93| 0.00| 78| 74| 85|13| 0| 5| |29.95| 0.00| 75| 74| 97|00| 0| 0| |30.06| 0.00| 78| 75| 90|13| 0| 11| |22| |29.97| 0.00| 74| 72| 93|00| 0| 0| |30.00| 0.00| 72| 71| 98|00| 0| 0| |30.11| 0.00| 73| 72| 97|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Precipitation | 0.10 | 0.19 | 0.28 | 0.37 | 0.55 | 0.82 | 1.07 | 1.22 | 1.38 | 1.53 | 1.76 | 1.98 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Date | 06 | 06 | 06 | 06 | 06 | 06 | 06 | 06 | 06 | 06 | 06 | 06 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Time | 0604 | 0609 | 0614 | 0619 | 0629 | 0644 | 0657 | 0657 | 0657 | 0657 | 0657 | 0700 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ The precipitation amounts for the indicated time intervals may occur at any time during the month. The time indicated is the ending time of the interval. Date and time are not entered for trace amounts.
OBSERVATIONS AT 3-HOUR INTERVALS
May 2018: KPWR Portsmouth, Virginia
+--+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | T | | | Wind | | | | T | | | Wind | | | | T | | | Wind | | | | | R | e | | % +--+---+---+ | | R | e | | % +--+---+---+ | | R | e | | % +--+---+---+ | | | | a | m | D | | D| | | | | a | m | D | | D| | | | | a | m | D | | D| | | | | S | P | i | p | e | H | i| | | S | P | i | p | e | H | i| | | S | P | i | p | e | H | i| | | | | u | r | n | e | w | u | r| | | u | r | n | e | w | u | r| | | u | r | n | e | w | u | r| | | | | n | e | f | r | | m | e| | | n | e | f | r | | m | e| | | n | e | f | r | | m | e| | | | | s | s | a | a | P | i | c| S | | s | s | a | a | P | i | c| S | | s | s | a | a | P | i | c| S | | | H| h | s | l | t | o | d | t| p | G | h | s | l | t | o | d | t| p | G | h | s | l | t | o | d | t| p | G | | o| i | u | l | u | i | i | i| e | u | i | u | l | u | i | i | i| e | u | i | u | l | u | i | i | i| e | u | | u| n | r | | r | n | t | o| e | s | n | r | | r | n | t | o| e | s | n | r | | r | n | t | o| e | s | | r| e | e | Rate| e | t | y | n| d | t | e | e | Rate| e | t | y | n| d | t | e | e | Rate| e | t | y | n| d | t | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 19 | MAY 20 | MAY 21 | | | | | |01| |30.12| 0.00| 72| 72| 99|00| 0| 0| |30.11| 0.00| 70| 70|100|00| 0| 0| |30.05| 0.00| 74| 72| 94|00| 0| 0| |04| |30.10| 0.98| 72| 72|100|20| 0| 7| |30.09| 0.00| 72| 72|100|24| 0| 4| |30.04| 0.00| 72| 72| 98|00| 0| 0| |07| |30.14| 0.02| 72| 72|100|00| 0| 0| |30.10| 0.00| 72| 72|100|00| 0| 0| |30.10| 0.00| 72| 72|100|00| 0| 0| |10| |30.15| 0.00| 76| 76| 98|15| 0| 4| |30.09| 0.00| 79| 75| 90|20| 0| 24| |30.12| 0.00| 80| 75| 85|06| 0| 11| |13| |30.13| 0.07| 78| 76| 96|20| 0| 25| |30.07| 0.00| 83| 76| 80|18| 0| 17| |30.15| 0.00| 75| 69| 80|06| 0| 16| |16| |30.11| 0.09| 75| 75| 97|29| 0| 5| |30.03| 0.00| 87| 76| 71|27| 0| 16| |30.14| 0.00| 71| 65| 82|00| 0| 0| |19| |30.09| 0.00| 74| 73| 98|00| 0| 0| |30.03| 0.00| 85| 75| 72|20| 0| 17| |30.12| 0.00| 67| 64| 89|04| 0| 6| |22| |30.10| 0.00| 71| 70| 98|20| 0| 13| |30.06| 0.00| 76| 72| 88|20| 0| 4| |30.14| 0.00| 67| 65| 92|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 22 | MAY 23 | MAY 24 | | | | | |01| |30.13| 0.00| 67| 65| 92|00| 0| 0| |29.99| 0.00| 73| 71| 94|20| 0| 4| |30.06| 0.00| 70| 65| 85|00| 0| 0| |04| |30.10| 0.00| 68| 66| 94|00| 0| 0| |29.96| 0.00| 72| 70| 95|22| 0| 4| |30.07| 0.00| 66| 64| 94|00| 0| 0| |07| |30.11| 0.00| 68| 67| 96|00| 0| 0| |29.98| 0.00| 72| 71| 95|22| 0| 7| |30.12| 0.00| 66| 66| 99|00| 0| 0| |10| |30.11| 0.00| 75| 72| 91|15| 0| 4| |29.98| 0.00| 81| 74| 78|20| 0| 18| |30.13| 0.00| 79| 64| 61|31| 0| 12| |13| |30.08| 0.00| 82| 75| 79|11| 0| 6| |29.97| 0.00| 85| 73| 67|27| 0| 13| |30.16| 0.00| 82| 60| 47|04| 0| 15| |16| |30.00| 0.00| 86| 75| 69|20| 0| 6| |29.94| 0.00| 86| 71| 61|06| 0| 17| |30.12| 0.00| 84| 60| 45|06| 0| 10| |19| |30.00| 0.00| 79| 71| 76|22| 0| 12| |29.98| 0.00| 81| 72| 76|15| 0| 4| |30.11| 0.00| 81| 64| 55|04| 0| 7| |22| |30.04| 0.00| 75| 71| 88|27| 0| 4| |30.04| 0.00| 74| 70| 88|00| 0| 0| |30.15| 0.00| 71| 65| 82|11| 0| 4| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 25 | MAY 26 | MAY 27 | | | | | |01| |30.13| 0.00| 66| 63| 91|00| 0| 0| |29.96| 0.00| 73| 70| 90|15| 0| 6| |29.92| 0.00| 77| 73| 86|00| 0| 0| |04| |30.11| 0.00| 63| 61| 94|00| 0| 0| |29.93| 0.00| 71| 69| 94|00| 0| 0| |29.93| 0.00| 75| 72| 90|22| 0| 11| |07| |30.13| 0.00| 63| 63| 99|00| 0| 0| |29.95| 0.00| 72| 71| 96|18| 0| 4| |29.95| 0.00| 73| 71| 93|18| 0| 4| |10| |30.11| 0.00| 79| 69| 71|22| 0| 10| |29.94| 0.00| 83| 75| 77|20| 0| 13| |29.97| 0.00| 82| 75| 80|20| 0| 21| |13| |30.06| 0.00| 85| 68| 56|15| 0| 11| |29.91| 0.00| 89| 75| 64|20| 0| 17| |29.95| 0.00| 89| 77| 67|22| 0| 17| |16| |29.98| 0.00| 88| 68| 51|18| 0| 13| |29.86| 0.00| 90| 75| 62|22| 0| 16| |29.92| 0.00| 90| 74| 60|22| 0| 14| |19| |29.95| 0.00| 85| 69| 57|22| 0| 13| |29.86| 0.00| 87| 74| 66|22| 0| 6| |29.93| 0.00| 86| 73| 66|24| 0| 10| |22| |29.96| 0.00| 77| 71| 80|15| 0| 10| |29.91| 0.00| 80| 74| 81|13| 0| 6| |29.99| 0.00| 79| 70| 75|20| 0| 6| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 28 | MAY 29 | MAY 30 | | | | | |01| |30.01| 0.00| 75| 70| 86|18| 0| 6| |29.98| 0.05| 70| 70|100|00| 0| 0| |30.00| 0.00| 73| 72| 98|00| 0| 0| |04| |29.99| 0.00| 72| 71| 94|00| 0| 0| |29.96| 0.00| 70| 70|100|00| 0| 0| |29.97| 0.00| 73| 72| 99|00| 0| 0| |07| |30.00| 0.00| 73| 72| 98|00| 0| 0| |29.98| 0.00| 71| 71|100|00| 0| 0| |30.01| 0.00| 74| 74|100|00| 0| 0| |10| |30.01| 0.00| 85| 77| 77|31| 0| 7| |30.00| 0.00| 74| 74|100|00| 0| 0| |30.02| 0.00| 81| 77| 89|00| 0| 0| |13| |30.03| 0.41| 79| 73| 83|04| 0| 7| |30.00| 0.00| 77| 74| 91|06| 0| 4| |30.01| 0.00| 84| 78| 83|04| 0| 12| |16| |30.02| 0.02| 76| 75| 97|00| 0| 0| |29.97| 0.00| 81| 75| 81|04| 0| 10| |29.95| 0.00| 85| 78| 78|13| 0| 10| |19| |30.01| 0.04| 71| 70| 96|00| 0| 0| |29.97| 0.00| 77| 74| 92|00| 0| 0| |29.95| 0.00| 82| 76| 84|15| 0| 11| |22| |30.01| 0.10| 67| 66| 98|00| 0| 0| |29.99| 0.00| 74| 73| 96|00| 0| 0| |29.98| 0.03| 77| 75| 94|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAY 31 | | | | | | | |01| |29.97| 0.00| 76| 75| 98|00| 0| 0| | | |04| |29.95| 0.00| 75| 74| 99|00| 0| 0| | | |07| |29.97| 0.00| 75| 75|100|00| 0| 0| | | |10| |29.98| 0.00| 79| 77| 94|00| 0| 0| | | |13| |29.96| 0.00| 86| 79| 81|20| 0| 7| | | |16| |29.89| 0.00| 90| 78| 70|20| 0| 13| | | |19| |29.87| 0.11| 82| 78| 88|20| 0| 14| | | |22| |29.90| 0.00| 77| 75| 93|20| 0| 11| | | +--+----+-----+-----+---+---+---+--+---+---+---------------------------------------+---------------------------------------+
WEATHER NOTES SUMMARY BY HOURS
+--+-----------------------------+---------+ Wind Direction: Directions are those from which the wind is blowing, | | Averages | | indicated in tens of degrees from true North: i.e., 09 for East, 18 for | +----+------+---+---+---+-----+Resultant| South, 27 for West, and 00 or 36 for North. | | | | | | | | | Wind Speed: The observed one-minute average speed in miles-per-hour. | | | | T | | | | Wind | Wind Gust: The maximum instantaneous wind speed for the ten minute-period | | | | e | | % | W +----+----+ preceding the observation. | | | | m | D | | i | D | | Rainfall Rate: The instantaneous rainfall rate at time of observation, | | S | P | p | e | H | n | i | | calculated by timing consecutive 0.01" pulses from the electronic rain | | u | r | e | w | u | d | r | | gauge and interpolating this rate for one hour. | | n | e | r | | m | | e | | | | s | s | a | P | i | S | c | S | | H| h | s | t | o | d | p | t | p | | o| i | u | u | i | i | e | i | e | | u| n | r | r | n | t | e | o | e | | r| e | e | e | t | y | d | n | d | +--+----+------+---+---+---+-----+----+----+ |01| |30.038| 68| 64| 89| 0.0| 00 | 0.0| |04| |30.020| 67| 64| 92| 0.0| 00 | 0.0| |07| |30.046| 67| 65| 95| 0.0| 00 | 0.0| |10| |30.058| 75| 69| 81| 0.0| 00 | 0.0| |13| |30.043| 80| 69| 72| 0.3| 20 | 0.3| |16| |30.001| 82| 68| 67| 0.6| 20 | 0.6| |19| |29.998| 78| 67| 72| 0.3| 20 | 0.3| |22| |30.034| 71| 66| 84| 0.2| 31 | 0.2| +--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
May 2018: KPWR Portsmouth, Virginia
---+-----------------------------------------------------------+-----------------------------------------------------------+--- | | | D| A.M. Hour Ending at | P.M. Hour Ending at |D a| | |a t+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+t e| 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 | 01 | 02 | 03 | 04 | 05 | 06 | 07 | 08 | 09 | 10 | 11 | 12 |e ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- 01| | | | | | | | | | | | | | | | | | | | | | | | |01 02| | | | | | | | | | | | | | | | | | | | | | | | |02 03| | | | | | | | | | | | | | | | | | | | | | | | |03 04| | | | | | | | | | | | | | | | | | | | | | | | |04 05| | | | | | | | | | | | | | | | | | | | | | | | |05 | | | | | | | | | | | | | | | | | | | | | | | | | 06| | |0.03|0.12|0.45|0.46|1.06|0.21|0.03|0.02|0.02| | | | | | | | |0.01| | |0.01| |06 07| | | | | | | |0.02|0.01| | | |0.09|0.20| | | | | | | | | | |07 08| | | | | | | | | | | | | | | | | | | | | | | | |08 09| | | | | |0.01| | | | | | | | | | | | | | | | | | |09 10| | | | | | | | | | | | | | | | | | | |0.50|0.12|0.06| | |10 | | | | | | | | | | | | | | | | | | | | | | | | | 11| | |0.01| | | | | | | | | | | | | | | | | | | | | |11 12| | | | | | | | | | | | | | | | | | | | | | | | |12 13| | | | | | | | | | | | | | | | | | | | | | | | |13 14| | | | | | | | | | | | | | | | | | | | | |0.32| | |14 15|0.01| | | | | | | | | | | | | | | | | | | | | | | |15 | | | | | | | | | | | | | | | | | | | | | | | | | 16| | | | | | | | | | | | |0.14|0.12|0.01| | | | |0.01| | | | |16 17| | | | | | | | | | | | |0.28|0.01| |0.09|0.01| | |0.02|0.01| |0.02| |17 18| | | | | | | | | | | | | | | | | | | |0.16| | | | |18 19| |0.02|0.08|0.98|0.01|0.11|0.02| | | | |0.03|0.07|0.12|0.16|0.09|0.04| | |0.02| | | | |19 20| | | | | |0.01| | | | | | | | | | | | | | | | | | |20 | | | | | | | | | | | | | | | | | | | | | | | | | 21| | | | | | | | | | | | | | | | |0.01| | | | | | | |21 22| | | | | | | | | | | | | | | | | | | | | | | | |22 23| | | | | | | | | | | | | | | | | | | | | | | | |23 24| | | | | | | | | | | | | | | | | | | | | | | | |24 25| | | | | | | | | | | | | | | | | | | | | | | | |25 | | | | | | | | | | | | | | | | | | | | | | | | | 26| | | | | | | | | | | | | | | | | | | | | | | | |26 27| | | | | | | | | | | | | | | | | | | | | | | | |27 28| | | | | | | | | | | | |0.41|0.21|0.91|0.02|0.03|0.05|0.04|0.03|0.04|0.10|0.74|0.55|28 29|0.05|0.07|0.04| | | | |0.08| | | | | | | | | | | | | | | | |29 30| | | | | | | | | | | | | | | | | | | | | |0.03|0.17| |30 31| | | | | | | | | | | | | | | | | | |0.11| | | | | |31 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- Sum|0.06|0.09|0.16|1.10|0.46|0.59|1.08|0.31|0.04|0.02|0.02|0.03|0.99|0.66|1.08|0.20|0.09|0.05|0.15|0.75|0.17|0.51|0.94|0.55|Sum ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- During a frozen precipitation event, hourly precipitation totals may not be recorded. In this case, daily amounts are typically entered in the last column (hour ending at 12 A.M.)