LOCAL CLIMATOLOGICAL DATA Monthly Summary
September 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| 90.6 | 71.7 | 81.1 | 77.7 | 75| 91| 0| 17|1.3......| 0| 0.02| 0.0| 30.20| 30.15|30.177| 0.0| 0.0| 0| 6| SE| 0| 0| | |02| 90.0 | 70.7 | 80.3 | 79.7 | 75| 87| 0| 16|.......8.| 0| 0.00| 0.0| 30.25| 30.17|30.202| 0.0| 0.0| 0| 10| NE| 0| 0| | |03| 92.1 | 73.9 | 83.0*| 81.3 | 77| 87| 0| 18|1......8.| 0| 0.00| 0.0| 30.27| 30.19|30.230| 0.0| 0.0| 0| 10| NW| 0| 0| | |04| 91.5 | 73.2 | 82.3 | 81.8 | 75| 83| 0| 18|1......8.| 0| 0.00| 0.0| 30.24| 30.16|30.202| 0.0| 0.0| 0| 14| NE| 0| 0| | |05| 92.4*| 71.9 | 82.2 | 81.2 | 75| 82| 0| 17|1......8.| 0| 0.00| 0.0| 30.23| 30.14|30.188| 0.0| 0.0| 0| 12| NE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |06| 91.3 | 73.8 | 82.6 | 81.1 | 76| 85| 0| 18|.......8.| 0| 0.00| 0.0| 30.18| 30.08|30.139| 0.0| 0.0| 0| 14| SE| 0| 0| | |07| 91.8 | 73.6 | 82.7 | 81.0 | 76| 86| 0| 18|1......8.| 0| 0.02| 0.0| 30.11| 30.00|30.064| 0.0| 0.0| 0| 15| NE| 0| 0| | |08| 91.3 | 72.9 | 82.1 | 78.1 | 75| 91| 0| 17|1.3....8.| 0| 4.13| 0.0| 30.02| 29.89|29.961| 0.2| 0.2|315| 24| NW| 0| 0| | |09| 86.4 | 73.7 | 80.1 | 78.3 | 76| 94| 0| 15|1........| 0| 0.71| 0.0| 29.96| 29.86|29.914| 0.0| 0.0| 0| 11| NE| 0| 0| | |10| 88.6 | 72.5 | 80.6 | 79.6 | 76| 90| 0| 16|.........| 0| 0.00| 0.0| 30.03| 29.93|29.969| 0.0| 0.0| 0| 12|SSE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |11| 90.5 | 74.5 | 82.5 | 80.6 | 78| 91| 0| 18|.........| 0| T | 0.0| 30.09| 30.00|30.051| 0.0| 0.0| 0| 17| SE| 0| 0| | |12| 88.6 | 75.1 | 81.8 | 81.0 | 77| 88| 0| 17|.........| 0| 0.00| 0.0| 30.14| 30.08|30.107| 0.0| 0.0| 0| 13| NE| 0| 0| | |13| 82.0 | 77.9 | 79.9 | 80.3 | 79| 94| 0| 15|.........| 0| 0.01| 0.0| 30.08| 29.94|30.013| 3.5| 3.5| 45| 32| NE| 0| 0| | |14| 85.6 | 74.4 | 80.0 | 79.7 | 77| 92| 0| 15|1........| 0| 0.15| 0.0| 30.01| 29.92|29.961| 0.5| 0.5| 45| 31| NE| 0| 0| | |15| 82.6 | 75.8 | 79.2 | 78.7 | 76| 93| 0| 15|1........| 0| 0.04| 0.0| 30.06| 29.97|30.019| 0.0| 0.0| 45| 21| NE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |16| 85.1 | 76.2 | 80.6 | 79.4 | 76| 89| 0| 16|.........| 0| 0.00| 0.0| 30.10| 30.03|30.066| 0.0| 0.0| 0| 15| NE| 0| 0| | |17| 84.6 | 76.2 | 80.4 | 80.0 | 77| 91| 0| 16|.........| 0| T | 0.0| 30.07| 29.89|29.981| 0.0| 0.0| 0| 15|SSE| 0| 0| | |18| 88.4 | 74.8 | 81.6 | 81.1 | 76| 86| 0| 17|.........| 0| 0.02| 0.0| 29.89| 29.73|29.804| 0.0| 0.0| 0| 22|WNW| 0| 0| | |19| 85.4 | 72.8 | 79.1 | 78.3 | 73| 84| 0| 14|.........| 0| 0.00| 0.0| 30.01| 29.80|29.888| 0.0| 0.0| 0| 16| NE| 0| 0| | |20| 80.9 | 68.3 | 74.6 | 74.3 | 70| 86| 0| 10|.........| 0| 0.00| 0.0| 30.22| 30.01|30.126| 0.0| 0.0| 0| 6| NE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |21| 83.9 | 63.3 | 73.6 | 73.4 | 68| 84| 0| 9|.........| 0| 0.00| 0.0| 30.23| 30.08|30.157| 0.0| 0.0| 0| 12|ESE| 0| 0| | |22| 84.8 | 68.0 | 76.4 | 76.0 | 72| 88| 0| 12|.........| 0| 0.00| 0.0| 30.10| 30.04|30.070| 0.0| 0.0| 0| 15| NE| 0| 0| | |23| 86.5 | 70.8 | 78.7 | 76.6 | 73| 90| 0| 14|1........| 0| 1.47| 0.0| 30.14| 30.05|30.090| 0.0| 0.0| 0| 14|NNW| 0| 0| | |24| 81.9 | 70.6 | 76.3 | 74.9 | 74| 96| 0| 12|1........| 0| 0.09| 0.0| 30.24| 30.14|30.191| 0.0| 0.0| 0| 10| S| 0| 0| | |25| 85.4 | 72.1 | 78.8 | 77.6 | 76| 94| 0| 14|1........| 0| 0.03| 0.0| 30.23| 30.09|30.164| 0.0| 0.0| 0| 15| S| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |26| 86.9 | 74.0 | 80.4 | 79.2 | 76| 90| 0| 16|1........| 0| 0.00| 0.0| 30.06| 29.91|29.987| 0.0| 0.0| 0| 12|SSW| 0| 0| | |27| 77.8 | 72.4 | 75.1 | 75.4 | 74| 94| 0| 10|1........| 0| 0.11| 0.0| 30.06| 29.97|30.009| 0.0| 0.0| 0| 7| NE| 0| 0| | |28| 79.4 | 65.7 | 72.6 | 74.2 | 71| 91| 0| 8|.........| 0| 0.05| 0.0| 30.14| 29.94|30.043| 0.0| 0.0| 0| 17| NW| 0| 0| | |29| 79.4 | 60.2*| 69.8 | 69.4 | 64| 86| 0| 5|1........| 0| 0.00| 0.0| 30.24| 30.13|30.181| 0.0| 0.0| 0| 10|ENE| 0| 0| | |30| 78.9 | 60.5 | 69.7*| 69.0 | 63| 84| 0| 5|1........| 0| 0.00| 0.0| 30.31| 30.23|30.275| 0.0| 0.0| 0| 13|ENE| 0| 0| | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- | +------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+ |2584.6|2151.5|------|------|---|----| 0| 428| Days | 6.85| 0.0| 30.31| 29.73|30.074| 0.1| 0.1| 42| 32| NE| 0| 0| ---- | +------+------+------+------+---+----+----+----+------------|+1.30" OR 123% of normal ------+----+----+---+---+---+---+---+------+ | Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg | +------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+ | 86.2| 71.7| 79.0 | 78.0 | 74|88.8|----|----|≥.01 Inch 13|49.75| 0.0| 30 | 18 |------|----|----|---| 13 | 1+ | | + +5.4 +7.0 +6.2-+------+---+----+----+----+------------|9.66" or 124% 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 | 0|2175|Thunder 2|Precipitation | Snow, Ice Plts | and Date | +--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+ | ≥90°F | ≤32°F | ≤32°F | ≤0°F |----|----|Heavy Fog 0| 4.83| 8- 9| 0.0 | - | 0 | - | +--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+ | 9 | 0 | 0 | 0 |----|----| Clear 12 Partly Cloudy 12 Cloudy 6 | +--------+---------+--------+--------+----+----+------------------------------------------+ 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: SUN, SEP 30, 2018 September 2018 was the warmest September in the station database to 1976. The top five warmest Septembers include: 1) 79.0 2018 2) 76.0 1980 3) 75.8 2016 4) 75.7 1977 5) 75.6 1988

FROPA: 18,23,28
RECORDS:
11th - TEMPERATURE Maximum low 74 [previously 73 1985]
12th - TEMP Max low 75 [prev 74 1984]
13th - TEMP Max low 78 [prev 73 1988]
13th - WIND GUST NE 32mph [prev 27mpph 1988]
14th - WIND GUST NE 31mph [prev 26mph 2001]
16th - TEMP Max lo 76 [prev 74 2005]
17th - TEMP Max lo 76 [prev 74 1980]
25th - TEMP TIED Max lo 72 [prev 1980]
26th - TEMP Max lo 74 [prev 73 1993]

   MONTHLY AVERAGE MAXIMUM TEMP OF 86.2 WAS  5.4 ABOVE NORMAL
   MONTHLY AVERAGE MINIMUM TEMP OF 71.7 WAS  7.0 ABOVE NORMAL
   MONTHLY AVERAGE TEMPERATURE  OF 79.0 WAS  6.2 ABOVE NORMAL

   MAXIMUM TEMP:  92 ON THE  3rd, 4th, 5th, & 7th
   MINIMUM TEMP:  60 ON THE  29th & 30th

   DAYS WITH TEMPERATURES:
        MAXIMUM >= 90:   9
        MAXIMUM <= 32:   0
        MINIMUM <= 32:   0
        MINIMUM <=  0:   0

   HEATING DEGREE DAYS:    0.0 
   COOLING DEGREE DAYS:  418.5

   DAYS WITH HEATING DEGREE DAYS:    0
   DAYS WITH COOLING DEGREE DAYS:   30

   PRECIP TOTAL OF  6.85" WAS 1.30" BELOW NORMAL (123% OF NORMAL)
   
   GREATEST DAILY RAINFALL:    4.13" on the  8th   
   GREATEST 24-HOUR RAINFALL:  4.83" on the  8th - 9th

   DAYS WITH MEASUREABLE PRECIP: 13 OF 30 DAYS OR 43.33% 
   AVERAGE DAILY PRECIP: 0.23"
   NORMAL DAILY PRECIP:  0.19"
                                   
   DAYS WITH PRECIP >= 0.01"    13 
   DAYS WITH PRECIP >= 0.10"     5 
   DAYS WITH PRECIP >= 0.50"     3
   DAYS WITH PRECIP >= 1.00"     2

   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:           6
   PARTLY CLOUDY DAYS    12 
   SUNNY/CLEAR DAYS:     12
   DAYS WITH F/GF:       16
   DAYS WITH DENSE FOG:   0 
   DAYS WITH FROST:       0

   YEAR-TO-DATE

   YEARLY  AVERAGE MAXIMUM TEMP OF 74.3 WAS 1.9 ABOVE NORMAL
   YEARLY  AVERAGE MINIMUM TEMP OF 56.0 WAS 1.9 ABOVE NORMAL
   YEARLY  AVERAGE TEMPERATURE  OF 65.1 WAS 1.8 ABOVE NORMAL

   MAXIMUM TEMP:  99 on June 19th 
   MINIMUM TEMP:   7 on January 6th 

   DAYS WITH TEMPERATURES:
        MAXIMUM >= 90:   61
        MAXIMUM <= 32:    7
        MINIMUM <= 32:   34
        MINIMUM <=  0:    0

   HEATING DEGREE DAYS:   2087.0
   COOLING DEGREE DAYS:   2126.5

   DAYS WITH HEATING DEGREE DAYS:  110
   DAYS WITH COOLING DEGREE DAYS:  162
                               
   PRECIP TOTAL OF 49.75" WAS 9.65" ABOVE NORMAL (124% OF NORMAL).

   GREATEST DAILY RAINFALL:     4.13" on September 8th  
   GREATEST 24-HOUR RAINFALL:   4.83" on September 8th - 9th
   DAYS WITH MEASUREABLE PRECIP: 112 of 273 or 41.03%

   AVERAGE DAILY PRECIP: 0.18" 
   NORMAL DAILY PRECIP:  0.15"

   DAYS WITH PRECIP >= 0.01"   112
   DAYS WITH PRECIP >= 0.10"    76
   DAYS WITH PRECIP >= 0.50"    33
   DAYS WITH PRECIP >= 1.00"    14

   DAYS WITH THUNDERSTORMS:  28
   NUMBER OF THUNDERSTORMS:  28 
                                  
   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:          59
   PARTLY CLOUDY DAYS:   98 
   SUNNY/CLEAR DAYS:    116
   DAYS WITH F/GF:       90 
   DAYS WITH DENSE FOG:   2
   DAYS WITH FROST:      31
OBSERVATIONS AT 3-HOUR INTERVALS
September 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | SEP 1 | SEP 2 | SEP 3 | | | | | |01| |30.17| 0.00| 72| 72| 99|00| 0| 0| |30.19| 0.00| 74| 73| 97|00| 0| 0| |30.22| 0.00| 77| 76| 97|00| 0| 0| |04| |30.16| 0.00| 72| 72|100|00| 0| 0| |30.17| 0.00| 72| 71| 98|00| 0| 0| |30.22| 0.00| 75| 74| 98|00| 0| 0| |07| |30.18| 0.00| 72| 72|100|00| 0| 0| |30.22| 0.00| 71| 70| 99|00| 0| 0| |30.25| 0.00| 74| 74| 99|00| 0| 0| |10| |30.20| 0.00| 81| 78| 93|06| 0| 4| |30.25| 0.00| 82| 76| 84|09| 0| 4| |30.27| 0.00| 83| 78| 87|06| 0| 5| |13| |30.19| 0.00| 90| 79| 70|15| 0| 5| |30.22| 0.00| 88| 77| 69|04| 0| 7| |30.24| 0.00| 89| 78| 69|31| 0| 10| |16| |30.15| 0.00| 83| 77| 82|06| 0| 6| |30.17| 0.00| 90| 78| 68|04| 0| 10| |30.19| 0.00| 90| 80| 71|15| 0| 6| |19| |30.18| 0.00| 78| 75| 89|00| 0| 0| |30.18| 0.00| 83| 77| 83|20| 0| 4| |30.19| 0.00| 85| 78| 79|11| 0| 5| |22| |30.19| 0.00| 75| 74| 94|06| 0| 4| |30.21| 0.00| 79| 77| 94|00| 0| 0| |30.24| 0.00| 79| 76| 90|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | SEP 4 | SEP 5 | SEP 6 | | | | | |01| |30.23| 0.00| 76| 75| 95|00| 0| 0| |30.19| 0.00| 76| 74| 93|00| 0| 0| |30.18| 0.00| 77| 75| 93|13| 0| 4| |04| |30.20| 0.00| 75| 74| 97|00| 0| 0| |30.18| 0.00| 74| 72| 96|00| 0| 0| |30.17| 0.00| 75| 74| 96|00| 0| 0| |07| |30.21| 0.00| 73| 73| 98|00| 0| 0| |30.22| 0.00| 72| 71| 98|00| 0| 0| |30.18| 0.00| 74| 74| 98|00| 0| 0| |10| |30.23| 0.00| 84| 79| 86|04| 0| 10| |30.23| 0.00| 82| 77| 84|04| 0| 6| |30.17| 0.00| 83| 78| 86|31| 0| 10| |13| |30.22| 0.00| 90| 77| 65|06| 0| 10| |30.21| 0.00| 89| 77| 67|04| 0| 6| |30.14| 0.00| 89| 77| 68|31| 0| 10| |16| |30.17| 0.00| 91| 76| 63|04| 0| 14| |30.16| 0.00| 90| 75| 62|04| 0| 12| |30.09| 0.00| 91| 79| 69|06| 0| 13| |19| |30.16| 0.00| 87| 75| 69|15| 0| 7| |30.15| 0.00| 87| 75| 69|02| 0| 6| |30.08| 0.00| 83| 78| 84|15| 0| 4| |22| |30.20| 0.00| 79| 75| 86|00| 0| 0| |30.19| 0.00| 80| 75| 86|04| 0| 4| |30.13| 0.00| 79| 76| 90|11| 0| 6| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | SEP 7 | SEP 8 | SEP 9 | | | | | |01| |30.11| 0.00| 77| 75| 95|00| 0| 0| |30.02| 0.00| 76| 75| 94|00| 0| 0| |29.94| 0.00| 75| 75|100|33| 0| 5| |04| |30.10| 0.00| 75| 74| 97|00| 0| 0| |29.99| 0.00| 75| 74| 97|00| 0| 0| |29.92| 0.07| 74| 74|100|02| 0| 4| |07| |30.10| 0.00| 74| 73| 98|00| 0| 0| |29.98| 0.00| 73| 72| 98|00| 0| 0| |29.92| 0.12| 74| 74|100|00| 0| 0| |10| |30.10| 0.00| 83| 78| 84|24| 0| 5| |29.98| 0.00| 81| 77| 88|27| 0| 7| |29.93| 0.00| 79| 79|100|00| 0| 0| |13| |30.07| 0.00| 90| 77| 64|06| 0| 11| |29.94| 0.00| 90| 79| 69|20| 0| 5| |29.91| 0.00| 85| 78| 79|06| 0| 4| |16| |30.02| 0.00| 86| 79| 81|18| 0| 6| |29.89| 0.01| 86| 80| 81|04| 0| 10| |29.86| 0.02| 84| 80| 87|18| 0| 5| |19| |30.00| 0.00| 85| 77| 76|13| 0| 10| |29.93| 0.21| 74| 73| 98|15| 0| 4| |29.88| 0.00| 78| 76| 91|04| 0| 7| |22| |30.03| 0.00| 79| 76| 90|00| 0| 0| |29.96| 0.00| 74| 74|100|00| 0| 0| |29.93| 0.00| 76| 74| 95|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | SEP 10 | SEP 11 | SEP 12 | | | | | |01| |29.95| 0.00| 74| 73| 98|00| 0| 0| |30.02| 0.00| 78| 77| 96|00| 0| 0| |30.08| 0.00| 78| 77| 98|00| 0| 0| |04| |29.94| 0.00| 74| 74| 99|00| 0| 0| |30.00| 0.00| 76| 75| 97|00| 0| 0| |30.09| 0.00| 77| 77| 99|00| 0| 0| |07| |29.95| 0.00| 73| 72| 99|00| 0| 0| |30.04| 0.00| 75| 74| 99|00| 0| 0| |30.12| 0.00| 75| 75|100|00| 0| 0| |10| |29.99| 0.00| 80| 77| 92|00| 0| 4| |30.07| 0.00| 82| 78| 90|13| 0| 5| |30.14| 0.00| 82| 78| 87|04| 0| 4| |13| |29.99| 0.00| 85| 79| 82|18| 0| 4| |30.07| 0.00| 89| 80| 75|06| 0| 4| |30.12| 0.00| 88| 78| 73|04| 0| 7| |16| |29.94| 0.00| 88| 80| 76|00| 0| 0| |30.04| 0.00| 84| 78| 82|15| 0| 6| |30.09| 0.00| 86| 77| 74|04| 0| 11| |19| |29.96| 0.00| 84| 79| 86|15| 0| 11| |30.06| 0.00| 82| 79| 90|00| 0| 0| |30.10| 0.00| 82| 77| 86|06| 0| 7| |22| |30.01| 0.00| 79| 77| 92|00| 0| 0| |30.09| 0.00| 79| 78| 95|00| 0| 0| |30.11| 0.00| 79| 77| 92|04| 0| 11| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | SEP 13 | SEP 14 | SEP 15 | | | | | |01| |30.08| 0.00| 78| 77| 96|02| 0| 4| |29.94| 0.00| 80| 78| 93|04| 4| 26| |29.99| 0.01| 77| 76| 98|06| 0| 13| |04| |30.05| 0.00| 79| 78| 96|04| 0| 4| |29.92| 0.00| 81| 78| 91|04| 0| 18| |29.97| 0.00| 78| 78| 97|06| 0| 12| |07| |30.05| 0.00| 80| 79| 95|04| 0| 16| |29.94| 0.00| 80| 77| 91|04| 0| 18| |30.01| 0.00| 77| 75| 95|02| 0| 16| |10| |30.06| 0.00| 81| 79| 95|04| 4| 24| |29.97| 0.00| 79| 77| 94|04| 0| 20| |30.03| 0.00| 78| 75| 89|04| 0| 4| |13| |30.02| 0.00| 82| 79| 93|04| 6| 25| |29.97| 0.00| 81| 79| 96|06| 0| 15| |30.03| 0.00| 82| 78| 86|04| 0| 11| |16| |29.98| 0.00| 81| 79| 94|04| 6| 30| |29.95| 0.00| 83| 79| 88|04| 0| 18| |30.02| 0.00| 81| 78| 90|04| 0| 19| |19| |29.96| 0.00| 81| 79| 94|04| 6| 28| |29.96| 0.00| 79| 76| 92|06| 0| 11| |30.04| 0.00| 79| 77| 92|04| 0| 19| |22| |29.96| 0.00| 80| 78| 94|04| 5| 30| |30.00| 0.04| 75| 73| 95|06| 0| 12| |30.06| 0.01| 77| 76| 96|04| 1| 19| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | SEP 16 | SEP 17 | SEP 18 | | | | | |01| |30.05| 0.00| 77| 76| 95|04| 0| 15| |30.07| 0.00| 77| 75| 93|13| 0| 4| |29.89| 0.00| 78| 77| 96|18| 0| 4| |04| |30.03| 0.00| 76| 75| 95|06| 0| 4| |30.04| 0.00| 76| 75| 96|09| 0| 4| |29.85| 0.00| 78| 77| 96|22| 0| 4| |07| |30.05| 0.00| 77| 75| 96|04| 0| 4| |30.03| 0.00| 76| 76| 98|00| 0| 0| |29.84| 0.00| 79| 77| 95|00| 0| 0| |10| |30.09| 0.00| 80| 77| 90|06| 0| 12| |30.03| 0.00| 81| 78| 90|15| 0| 7| |29.81| 0.00| 83| 79| 88|20| 0| 15| |13| |30.09| 0.00| 84| 77| 80|06| 0| 10| |30.00| 0.00| 83| 79| 87|11| 0| 5| |29.77| 0.00| 88| 78| 72|20| 0| 21| |16| |30.06| 0.00| 83| 76| 81|13| 0| 6| |29.93| 0.00| 84| 78| 83|15| 0| 15| |29.73| 0.00| 87| 75| 66|29| 0| 22| |19| |30.07| 0.00| 80| 75| 86|09| 0| 4| |29.90| 0.00| 82| 78| 86|15| 0| 6| |29.75| 0.00| 82| 74| 78|24| 0| 7| |22| |30.08| 0.00| 78| 75| 90|15| 0| 4| |29.92| 0.00| 79| 77| 94|13| 0| 10| |29.80| 0.01| 75| 73| 94|00| 0| 14| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Precipitation | 0.18 | 0.36 | 0.53 | 0.71 | 1.06 | 1.59 | 2.02 | 2.65 | 3.28 | 3.91 | 4.01 | 4.11 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Date | 08 | 08 | 08 | 08 | 08 | 08 | 08 | 08 | 08 | 08 | 08 | 08 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Time | 1604 | 1609 | 1614 | 1619 | 1629 | 1644 | 1700 | 1719 | 1739 | 1800 | 1828 | 1857 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ 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
September 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | SEP 19 | SEP 20 | SEP 21 | | | | | |01| |29.81| 0.00| 75| 73| 95|00| 0| 0| |30.02| 0.00| 73| 71| 94|00| 0| 0| |30.21| 0.00| 67| 66| 94|00| 0| 0| |04| |29.81| 0.00| 74| 72| 93|31| 0| 6| |30.01| 0.00| 70| 69| 96|00| 0| 0| |30.18| 0.00| 65| 64| 96|00| 0| 0| |07| |29.84| 0.00| 73| 70| 92|00| 0| 5| |30.08| 0.00| 69| 68| 98|00| 0| 0| |30.21| 0.00| 63| 63| 97|00| 0| 0| |10| |29.89| 0.00| 78| 73| 84|29| 0| 12| |30.15| 0.00| 77| 73| 86|04| 0| 6| |30.23| 0.00| 75| 69| 82|04| 0| 5| |13| |29.91| 0.00| 84| 74| 72|04| 0| 7| |30.17| 0.00| 80| 72| 75|04| 0| 5| |30.17| 0.00| 82| 70| 67|20| 0| 4| |16| |29.89| 0.00| 85| 75| 71|04| 0| 16| |30.15| 0.00| 80| 70| 72|04| 0| 5| |30.11| 0.00| 84| 72| 69|13| 0| 5| |19| |29.92| 0.00| 81| 74| 79|04| 0| 6| |30.16| 0.00| 76| 69| 79|04| 0| 4| |30.08| 0.00| 79| 71| 77|11| 0| 12| |22| |29.98| 0.00| 76| 71| 84|00| 0| 0| |30.19| 0.00| 70| 67| 89|02| 0| 4| |30.11| 0.00| 73| 69| 87|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | SEP 22 | SEP 23 | SEP 24 | | | | | |01| |30.09| 0.00| 70| 69| 94|00| 0| 0| |30.09| 0.00| 76| 74| 92|00| 0| 0| |30.14| 0.00| 71| 71|100|00| 0| 0| |04| |30.06| 0.00| 69| 68| 97|00| 0| 0| |30.07| 0.00| 75| 73| 93|00| 0| 0| |30.14| 0.00| 71| 71|100|00| 0| 0| |07| |30.08| 0.00| 68| 67| 98|00| 0| 0| |30.09| 0.00| 71| 70| 96|00| 0| 0| |30.18| 0.00| 71| 71|100|00| 0| 0| |10| |30.08| 0.00| 77| 72| 87|20| 0| 5| |30.11| 0.00| 78| 74| 87|13| 0| 4| |30.22| 0.00| 74| 74|100|00| 0| 0| |13| |30.06| 0.00| 84| 75| 75|04| 0| 15| |30.09| 0.00| 86| 75| 69|06| 0| 6| |30.22| 0.04| 79| 77| 93|06| 0| 5| |16| |30.04| 0.00| 83| 75| 78|06| 0| 7| |30.06| 0.00| 84| 74| 74|13| 0| 11| |30.18| 0.00| 79| 77| 92|06| 0| 4| |19| |30.06| 0.00| 79| 74| 84|04| 0| 7| |30.09| 0.02| 74| 73| 97|00| 0| 0| |30.20| 0.00| 77| 74| 91|04| 0| 4| |22| |30.09| 0.00| 78| 74| 90|04| 0| 4| |30.12| 0.00| 72| 72| 99|00| 0| 0| |30.23| 0.00| 75| 74| 95|04| 0| 4| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | SEP 25 | SEP 26 | SEP 27 | | | | | |01| |30.23| 0.00| 75| 74| 97|00| 0| 0| |30.06| 0.00| 75| 75|100|00| 0| 0| |29.98| 0.00| 76| 74| 92|27| 0| 6| |04| |30.19| 0.00| 74| 74| 99|00| 0| 0| |30.03| 0.00| 74| 74|100|00| 0| 0| |29.99| 0.05| 74| 73| 94|24| 0| 4| |07| |30.20| 0.00| 72| 72| 99|00| 0| 0| |30.01| 0.00| 75| 75|100|00| 0| 0| |30.03| 0.00| 73| 73| 98|00| 0| 0| |10| |30.22| 0.00| 80| 77| 91|18| 0| 4| |30.04| 0.00| 78| 78|100|00| 0| 0| |30.06| 0.00| 76| 73| 91|02| 0| 4| |13| |30.17| 0.00| 85| 80| 83|11| 0| 7| |29.98| 0.00| 85| 77| 79|20| 0| 7| |30.05| 0.00| 76| 74| 94|06| 0| 4| |16| |30.13| 0.00| 80| 78| 92|18| 0| 15| |29.93| 0.00| 87| 77| 72|22| 0| 10| |30.00| 0.00| 77| 74| 90|04| 0| 5| |19| |30.12| 0.01| 79| 77| 93|00| 0| 0| |29.92| 0.00| 83| 76| 80|22| 0| 4| |29.98| 0.00| 76| 73| 93|11| 0| 4| |22| |30.10| 0.00| 76| 75| 98|15| 0| 4| |29.96| 0.00| 78| 75| 92|22| 0| 4| |29.98| 0.00| 75| 75| 97|13| 0| 4| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | SEP 28 | SEP 29 | SEP 30 | | | | | |01| |29.97| 0.00| 76| 76| 99|22| 0| 4| |30.14| 0.00| 65| 63| 95|00| 0| 0| |30.23| 0.00| 64| 62| 94|00| 0| 0| |04| |29.95| 0.00| 76| 76| 99|20| 0| 6| |30.13| 0.00| 62| 61| 97|00| 0| 0| |30.23| 0.00| 62| 61| 96|00| 0| 0| |07| |29.99| 0.00| 75| 75| 99|00| 0| 0| |30.17| 0.00| 60| 60| 98|00| 0| 0| |30.27| 0.00| 61| 60| 97|00| 0| 0| |10| |30.04| 0.00| 78| 75| 90|29| 0| 7| |30.20| 0.00| 69| 69| 99|00| 0| 0| |30.31| 0.00| 72| 69| 89|06| 0| 7| |13| |30.07| 0.00| 73| 71| 91|31| 0| 17| |30.18| 0.00| 78| 67| 68|04| 0| 6| |30.30| 0.00| 77| 65| 66|06| 0| 6| |16| |30.06| 0.00| 75| 69| 81|04| 0| 4| |30.17| 0.00| 79| 67| 67|06| 0| 6| |30.28| 0.00| 77| 66| 68|06| 0| 5| |19| |30.09| 0.00| 73| 66| 80|00| 0| 0| |30.20| 0.00| 74| 66| 77|06| 0| 4| |30.27| 0.00| 73| 64| 73|13| 0| 4| |22| |30.13| 0.00| 69| 66| 91|00| 0| 0| |30.23| 0.00| 67| 64| 88|00| 0| 0| |30.29| 0.00| 66| 62| 88|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +------------------------------------------+---------------------------------------+---------------------------------------+
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| |30.077| 75| 73| 96| 0.1| 05 | 0.1| |04| |30.060| 74| 73| 97| 0.0| 00 | 0.0| |07| |30.081| 73| 72| 98| 0.0| 00 | 0.0| |10| |30.103| 79| 76| 90| 0.1| 05 | 0.1| |13| |30.086| 84| 76| 77| 0.2| 05 | 0.2| |16| |30.047| 84| 76| 77| 0.2| 05 | 0.2| |19| |30.055| 80| 74| 84| 0.2| 05 | 0.2| |22| |30.084| 76| 73| 92| 0.2| 05 | 0.2| +--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
September 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| | | | | | | | | | | | | | |0.02| | | | | | | | | |01 02| | | | | | | | | | | | | | | | | | | | | | | | |02 03| | | | | | | | | | | | | | | | | | | | | | | | |03 04| | | | | | | | | | | | | | | | | | | | | | | | |04 05| | | | | | | | | | | | | | | | | | | | | | | | |05 | | | | | | | | | | | | | | | | | | | | | | | | | 06| | | | | | | | | | | | | | | | | | | | | | | | |06 07| | | | | | | | | | | | | | |0.02| | | | | | | | | |07 08| | | | | | | | | | | | | | | |0.01|2.01|1.89|0.21| | | |0.01| |08 09| |0.37| |0.07|0.04|0.08|0.12|0.01| | | | | | | |0.02| | | | | | | | |09 10| | | | | | | | | | | | | | | | | | | | | | | | |10 | | | | | | | | | | | | | | | | | | | | | | | | | 11| | | | | | | | | | | | | | | | | | | | | | | | |11 12| | | | | | | | | | | | | | | | | | | | | | | | |12 13| | | | | | | | | | | | | | |0.01| | | | | | | | | |13 14| | | | | | | | |0.02| |0.02|0.07| | | | | | | | | |0.04| | |14 15|0.01| | | | |0.01| | |0.01| | | | | | | | | | | | |0.01| | |15 | | | | | | | | | | | | | | | | | | | | | | | | | 16| | | | | | | | | | | | | | | | | | | | | | | | |16 17| | | | | | | | | | | | | | | | | | | | | | | | |17 18| | | | | | | | | | | | | | | | | | | | |0.01|0.01| | |18 19| | | | | | | | | | | | | | | | | | | | | | | | |19 20| | | | | | | | | | | | | | | | | | | | | | | | |20 | | | | | | | | | | | | | | | | | | | | | | | | | 21| | | | | | | | | | | | | | | | | | | | | | | | |21 22| | | | | | | | | | | | | | | | | | | | | | | | |22 23| | | | | | | | | | | | | | | | |1.35|0.05|0.02|0.02|0.03| | | |23 24| | | | | | | | | | | |0.05|0.04| | | | | | | | | | | |24 25| | | | | | | | | | | | | | |0.01| | | |0.01| | | | |0.01|25 | | | | | | | | | | | | | | | | | | | | | | | | | 26| | | | | | | | | | | | | | | | | | | | | | | | |26 27| | | |0.05| | | |0.04|0.02| | | | | | | | | | | | | | | |27 28| | | | |0.05| | | | | | | | | | | | | | | | | | | |28 29| | | | | | | | | | | | | | | | | | | | | | | | |29 30| | | | | | | | | | | | | | | | | | | | | | | | |30 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- Sum|0.01|0.37|0.00|0.12|0.09|0.09|0.12|0.05|0.05|0.00|0.02|0.12|0.04|0.00|0.06|0.03|3.36|1.94|0.24|0.02|0.04|0.06|0.01|0.01|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.)