LOCAL CLIMATOLOGICAL DATA Monthly Summary
September 2017
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| 74.9 | 61.2 | 68.1 | 69.8 | 65| 86| 0| 3|.........| 0| 0.28| 0.0| 30.11| 29.94|30.050| 3.1| 3.1| 45| 24| NE| 0| 0| | |02| 80.4 | 63.1 | 71.8 | 72.3 | 72| 97| 0| 7|1........| 0| 0.72| 0.0| 30.06| 29.97|30.010| 0.0| 0.0| 0| 13|NNE| 0| 0| | |03| 78.3 | 66.3 | 72.3 | 72.7 | 68| 86| 0| 7|1........| 0| 0.00| 0.0| 30.02| 29.93|29.974| 0.0| 0.0| 0| 16| W| 0| 0| | |04| 83.8 | 60.9 | 72.4 | 72.4 | 65| 79| 0| 8|.........| 0| 0.00| 0.0| 30.06| 29.93|30.003| 0.0| 0.0| 0| 16| W| 0| 0| | |05| 87.8*| 68.4 | 78.1 | 77.3 | 72| 86| 0| 13|.........| 0| 0.08| 0.0| 29.94| 29.79|29.878| 1.0| 0.9|201| 24|SSW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |06| 84.9 | 65.7 | 75.3 | 73.7 | 70| 90| 0| 11|..3......| 0| 0.38| 0.0| 29.91| 29.79|29.843| 0.3| 0.3| 0| 26| N| 0| 0| | |07| 75.3 | 60.7 | 68.0 | 67.6 | 61| 81| 0| 3|.........| 0| 0.02| 0.0| 30.10| 29.91|29.991| 0.0| 0.0| 0| 15| W| 0| 0| | |08| 76.2 | 55.4*| 65.8 | 65.8 | 56| 73| 0| 1|.........| 0| 0.00| 0.0| 30.18| 30.10|30.146| 0.3| 0.1| 0| 18|ENE| 0| 0| | |09| 72.8 | 56.6 | 64.7 | 65.8 | 56| 72| 0| 0|.........| 0| 0.00| 0.0| 30.26| 30.16|30.220| 2.5| 2.4| 48| 24| NE| 0| 0| | |10| 71.0 | 61.7 | 66.3 | 66.9 | 57| 69| 0| 2|.........| 0| 0.00| 0.0| 30.33| 30.24|30.288| 2.5| 2.3| 44| 22| NE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |11| 73.9 | 59.9 | 66.9 | 68.6 | 60| 73| 0| 2|.........| 0| 0.00| 0.0| 30.27| 30.06|30.177| 1.8| 1.8| 45| 25| NE| 0| 0| | |12| 77.7 | 68.5 | 73.1 | 72.5 | 67| 83| 0| 9|.........| 0| T | 0.0| 30.05| 29.89|29.957| 0.0| 0.0| 0| 15| NE| 0| 0| | |13| 85.1 | 71.6 | 78.3 | 77.3 | 71| 81| 0| 14|.........| 0| 0.00| 0.0| 29.92| 29.85|29.882| 0.0| 0.0| 0| 15|SSW| 0| 0| | |14| 83.2 | 67.9 | 75.6 | 74.6 | 71| 88| 0| 11|1........| 0| 0.31| 0.0| 29.97| 29.89|29.926| 0.2| 0.2|270| 23| W| 0| 0| | |15| 83.1 | 70.5 | 76.8 | 76.3 | 71| 85| 0| 12|12.......| 0| 0.00| 0.0| 30.08| 29.96|30.020| 0.0| 0.0| 0| 7|ENE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |16| 82.9 | 69.4 | 76.2 | 75.7 | 71| 85| 0| 11|1........| 0| 0.00| 0.0| 30.11| 30.06|30.082| 0.0| 0.0| 0| 17| NE| 0| 0| | |17| 78.6 | 70.4 | 74.5 | 74.5 | 71| 89| 0| 10|.........| 0| 0.00| 0.0| 30.08| 30.02|30.053| 0.5| 0.5| 45| 17| NE| 0| 0| | |18| 78.9 | 72.5 | 75.7 | 75.2 | 72| 89| 0| 11|.........| 0| 0.02| 0.0| 30.01| 29.91|29.959| 3.0| 3.0| 45| 24| NE| 0| 0| | |19| 76.4 | 71.1 | 73.8 | 73.0 | 70| 92| 0| 9|.........| 0| 0.20| 0.0| 29.89| 29.84|29.857| 3.0| 2.8|326| 25|NNW| 0| 0| | |20| 85.0 | 68.7 | 76.8 | 75.7 | 69| 80| 0| 12|.........| 0| 0.00| 0.0| 29.97| 29.86|29.914| 0.0| 0.0| 0| 19|WNW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |21| 85.2 | 64.2 | 74.7 | 74.8 | 68| 80| 0| 10|.......8.| 0| 0.00| 0.0| 30.03| 29.95|29.989| 0.0| 0.0| 0| 16|ENE| 0| 0| | |22| 84.4 | 65.6 | 75.0 | 73.9 | 68| 83| 0| 10|.........| 0| 0.00| 0.0| 30.04| 29.96|30.001| 0.0| 0.0| 0| 16| W| 0| 0| | |23| 81.7 | 63.8 | 72.8 | 73.3 | 67| 83| 0| 8|1........| 0| 0.00| 0.0| 30.05| 29.98|30.017| 0.0| 0.0| 0| 18|ENE| 0| 0| | |24| 83.9 | 65.4 | 74.7 | 74.3 | 66| 79| 0| 10|.........| 0| 0.00| 0.0| 30.04| 29.98|30.015| 0.0| 0.0| 0| 16| NE| 0| 0| | |25| 77.7 | 66.4 | 72.1 | 72.3 | 69| 90| 0| 7|1........| 0| 0.00| 0.0| 29.99| 29.91|29.957| 2.6| 2.6| 45| 21| NE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |26| 76.1 | 71.6 | 73.8 | 73.9 | 73| 98| 0| 9|1........| 0| 0.46| 0.0| 29.90| 29.76|29.842| 2.6| 2.6| 46| 36| NE| 0| 0| | |27| 83.5 | 75.2 | 79.3*| 78.5 | 75| 89| 0| 15|.........| 0| 0.00| 0.0| 29.76| 29.68|29.713| 6.0| 5.5|339| 32|NNW| 0| 0| | |28| 85.3 | 71.7 | 78.5 | 78.1 | 67| 70| 0| 14|.........| 0| 0.00| 0.0| 29.94| 29.70|29.804| 3.1| 2.2|349| 22| NW| 0| 0| | |29| 74.0 | 61.0 | 67.5 | 69.3 | 57| 65| 0| 3|.........| 0| 0.00| 0.0| 30.09| 29.95|30.041| 2.3| 2.3| 45| 21| NE| 0| 0| | |30| 70.9 | 56.8 | 63.8*| 64.1 | 54| 71| 1| 0|.........| 0| 0.00| 0.0| 30.26| 30.07|30.158| 1.7| 1.3|359| 27|NNW| 0| 0| | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- | +------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+ |2392.9|1972.2|------|------|---|----| 1| 242| Days | 2.47| 0.0| 30.33| 29.68|29.992| 1.2| 0.9| 20| 36| NE| 0| 0| ---- | +------+------+------+------+---+----+----+----+------------|-3.05" or 45% of normal +------+----+----+---+---+---+---+---+------+ | Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg | +------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+ | 79.8| 65.7| 72.7 | 72.7 | 67|82.4|----|----|≥.01 Inch 9|45.13| 0.0| 10 | 27 |------|----|----|---| 26 | 1+ | | + -0.9 +1.1 +0.1 ------+---+----+----+----+------------|+5.27" or 113% 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 | 1|1880|Thunder 1|Precipitation | Snow, Ice Plts | and Date | +--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+ | ≥90°F | ≤32°F | ≤32°F | ≤0°F |----|----|Heavy Fog 1| 0.92| 1- 2| 0.0 | - | 0 | - | +--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+ | 0 | 0 | 0 | 0 |----|----| Clear 14 Partly Cloudy 11 Cloudy 5 | +--------+---------+--------+--------+----+----+------------------------------------------+ 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: 1st (coastal back-door with onshore flow), 3rd, 6th, 28th
STATION RECORDS:
2nd - RAINFALL 0.72" [previous 0.67" in 1999]
8th - TEMPERATURE TIED Minimum 55 [previous 1984]
26th - WIND GUST 36mph [previous 32mph 1985]
27th - TEMPERATURE Maximum low 75 [previous 73 2002]

   MONTHLY AVERAGE MAXIMUM TEMP OF 79.8 WAS  0.9 BELOW NORMAL
   MONTHLY AVERAGE MINIMUM TEMP OF 65.7 WAS  1.1 ABOVE NORMAL
   MONTHLY AVERAGE TEMPERATURE  OF 72.7 WAS  0.1 ABOVE NORMAL

   MAXIMUM TEMP:  88 ON THE 5th
   MINIMUM TEMP:  55 ON THE 8th

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

   HEATING DEGREE DAYS:    1.0 
   COOLING DEGREE DAYS:  233.0

   DAYS WITH HEATING DEGREE DAYS:    1
   DAYS WITH COOLING DEGREE DAYS:   28

   PRECIP TOTAL OF  2.47" WAS 3.05" BELOW NORMAL (45% OF NORMAL)
   
   GREATEST DAILY RAINFALL:    0.72" on the  2nd   
   GREATEST 24-HOUR RAINFALL:  0.92" on the 1st-2nd

   DAYS WITH MEASUREABLE PRECIP:  9 OF 30 DAYS OR 30.00% 
   AVERAGE DAILY PRECIP: 0.08"
   NORMAL DAILY PRECIP:  0.18"
                                   
   DAYS WITH PRECIP >= 0.01"     9 
   DAYS WITH PRECIP >= 0.10"     6 
   DAYS WITH PRECIP >= 0.50"     1
   DAYS WITH PRECIP >= 1.00"     0

   DAYS WITH THUNDERSTORMS:   1   
   NUMBER OF THUNDERSTORMS:   1 

   DAYS WITH SNOW:     0  
   SNOWFALL TOTAL:     0 
   SEASONAL SNOWFALL 2016-2017 (beginning November 2016): 6.0"

   CLOUDY DAYS:           5
   PARTLY CLOUDY DAYS    11 
   SUNNY/CLEAR DAYS:     14
   DAYS WITH F/GF:        8
   DAYS WITH DENSE FOG:   1 
   DAYS WITH FROST:       0

   YEAR-TO-DATE

   YEARLY  AVERAGE MAXIMUM TEMP OF 74.7 WAS 2.3 ABOVE NORMAL
   YEARLY  AVERAGE MINIMUM TEMP OF 56.7 WAS 2.6 ABOVE NORMAL
   YEARLY  AVERAGE TEMPERATURE  OF 65.7 WAS 2.5 ABOVE NORMAL

   MAXIMUM TEMP:  99 on July 14th
   MINIMUM TEMP:  16 on January 8th and 10th 

   DAYS WITH TEMPERATURES:
        MAXIMUM >= 90:   47
        MAXIMUM <= 32:    2
        MINIMUM <= 32:   22
        MINIMUM <=  0:    0

   HEATING DEGREE DAYS:  1633.5
   COOLING DEGREE DAYS:  1830.0

   DAYS WITH HEATING DEGREE DAYS: 109
   DAYS WITH COOLING DEGREE DAYS: 160
                               
   PRECIP TOTAL OF 45.13" WAS 5.27" ABOVE NORMAL (113% OF NORMAL).

   GREATEST DAILY RAINFALL:     4.36" on July 15th  
   GREATEST 24-HOUR RAINFALL:   4.47" on July 14th and 15th             
   DAYS WITH MEASUREABLE PRECIP: 97 of 273 or 35.53%

   AVERAGE DAILY PRECIP: 0.17" 
   NORMAL DAILY PRECIP:  0.15"

   DAYS WITH PRECIP >= 0.01"    97
   DAYS WITH PRECIP >= 0.10"    64
   DAYS WITH PRECIP >= 0.50"    24
   DAYS WITH PRECIP >= 1.00"    12

   DAYS WITH THUNDERSTORMS:  31
   NUMBER OF THUNDERSTORMS:  32 
                                  
   DAYS WITH SNOW  (calendar year 2017):    5
   SNOWFALL TOTAL  (calendar year 2017):  6.0" 
   SEASONAL SNOW 2016-2017 (beginning November 2016):  6.0"

   CLOUDY DAYS:          51
   PARTLY CLOUDY DAYS:  132 
   SUNNY/CLEAR DAYS:     90
   DAYS WITH F/GF:       81 
   DAYS WITH DENSE FOG:   3
   DAYS WITH FROST:      14
OBSERVATIONS AT 3-HOUR INTERVALS
September 2017: 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| |29.95| 0.00| 74| 72| 92|20| 0| 12| |30.06| 0.05| 63| 63| 98|02| 0| 13| |29.95| 0.00| 71| 70| 99|00| 0| 0| |04| |29.97| 0.00| 72| 71| 96|00| 0| 4| |30.03| 0.12| 65| 65| 99|04| 0| 7| |29.94| 0.00| 72| 72|100|00| 0| 0| |07| |30.02| 0.00| 72| 71| 94|04| 0| 20| |30.03| 0.00| 68| 68|100|00| 0| 0| |29.96| 0.00| 70| 70|100|00| 0| 0| |10| |30.08| 0.00| 71| 64| 79|04| 5| 22| |30.05| 0.00| 73| 73|100|00| 0| 0| |29.98| 0.00| 71| 68| 89|29| 0| 14| |13| |30.10| 0.00| 71| 65| 80|04| 4| 18| |30.01| 0.00| 78| 76| 96|00| 0| 0| |29.98| 0.00| 76| 66| 72|29| 0| 14| |16| |30.07| 0.00| 71| 62| 73|04| 4| 22| |29.98| 0.00| 79| 77| 92|00| 0| 0| |29.96| 0.00| 77| 67| 70|29| 0| 12| |19| |30.09| 0.00| 68| 61| 77|04| 4| 17| |29.98| 0.07| 77| 75| 93|00| 0| 0| |29.98| 0.00| 77| 67| 72|29| 0| 12| |22| |30.11| 0.03| 61| 60| 94|04| 6| 18| |29.98| 0.00| 73| 72| 98|13| 0| 4| |30.02| 0.00| 69| 65| 88|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | SEP 4 | SEP 5 | SEP 6 | | | | | |01| |30.03| 0.00| 65| 63| 93|00| 0| 0| |29.94| 0.00| 71| 69| 92|20| 0| 7| |29.85| 0.00| 76| 74| 94|15| 0| 10| |04| |30.02| 0.00| 63| 62| 95|00| 0| 0| |29.93| 0.00| 69| 68| 94|00| 0| 0| |29.81| 0.00| 71| 68| 91|29| 0| 7| |07| |30.05| 0.00| 61| 60| 96|00| 0| 0| |29.93| 0.00| 68| 68| 97|00| 0| 0| |29.84| 0.01| 70| 69| 96|00| 0| 0| |10| |30.06| 0.00| 71| 68| 92|20| 0| 4| |29.92| 0.00| 77| 73| 88|22| 0| 15| |29.88| 0.00| 75| 71| 87|20| 0| 4| |13| |30.03| 0.00| 81| 66| 60|27| 0| 5| |29.86| 0.00| 86| 74| 67|20| 4| 20| |29.84| 0.00| 84| 75| 76|11| 0| 13| |16| |29.98| 0.00| 84| 67| 57|24| 0| 13| |29.81| 0.00| 88| 75| 67|22| 4| 23| |29.79| 0.02| 79| 75| 87|15| 0| 13| |19| |29.95| 0.00| 80| 68| 66|20| 0| 12| |29.82| 0.00| 83| 76| 79|22| 0| 7| |29.85| 0.01| 69| 67| 94|00| 4| 26| |22| |29.93| 0.00| 73| 67| 81|20| 0| 6| |29.85| 0.00| 76| 74| 95|13| 0| 7| |29.89| 0.00| 66| 64| 94|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | SEP 7 | SEP 8 | SEP 9 | | | | | |01| |29.92| 0.00| 66| 65| 97|00| 0| 0| |30.10| 0.00| 60| 57| 91|00| 0| 0| |30.17| 0.00| 60| 57| 89|00| 0| 0| |04| |29.92| 0.00| 65| 65| 98|00| 0| 0| |30.11| 0.00| 57| 55| 94|00| 0| 0| |30.16| 0.00| 57| 55| 92|00| 0| 0| |07| |29.95| 0.00| 62| 61| 97|00| 0| 0| |30.14| 0.00| 55| 54| 95|00| 0| 0| |30.20| 0.00| 57| 55| 95|00| 0| 0| |10| |30.01| 0.00| 65| 62| 90|24| 0| 11| |30.17| 0.00| 68| 59| 71|33| 0| 12| |30.24| 0.00| 71| 60| 69|04| 4| 20| |13| |30.00| 0.00| 72| 61| 69|31| 0| 7| |30.16| 0.00| 74| 54| 50|31| 0| 12| |30.24| 0.00| 72| 58| 61|04| 5| 23| |16| |29.99| 0.00| 75| 57| 53|24| 0| 14| |30.14| 0.00| 76| 56| 49|29| 4| 16| |30.22| 0.00| 73| 56| 56|04| 6| 23| |19| |30.01| 0.00| 73| 57| 57|27| 0| 14| |30.15| 0.00| 73| 56| 54|04| 0| 11| |30.24| 0.00| 69| 53| 57|04| 4| 19| |22| |30.07| 0.00| 64| 58| 83|00| 0| 0| |30.18| 0.00| 64| 57| 77|00| 0| 0| |30.26| 0.00| 67| 54| 63|04| 0| 10| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | SEP 10 | SEP 11 | SEP 12 | | | | | |01| |30.25| 0.00| 66| 54| 66|04| 0| 18| |30.27| 0.00| 67| 57| 71|04| 0| 11| |30.05| 0.00| 69| 63| 80|04| 0| 12| |04| |30.25| 0.00| 64| 54| 69|04| 0| 15| |30.26| 0.00| 63| 57| 80|00| 0| 0| |30.00| 0.00| 69| 63| 82|04| 0| 15| |07| |30.29| 0.00| 62| 53| 74|04| 0| 10| |30.24| 0.00| 62| 57| 83|00| 0| 0| |29.98| 0.00| 69| 64| 84|04| 0| 11| |10| |30.33| 0.00| 67| 56| 68|04| 4| 17| |30.20| 0.00| 71| 59| 66|04| 5| 23| |30.00| 0.00| 73| 68| 84|06| 0| 10| |13| |30.31| 0.00| 70| 58| 66|04| 5| 22| |30.20| 0.00| 73| 61| 66|04| 4| 21| |29.94| 0.00| 76| 69| 78|04| 0| 14| |16| |30.30| 0.00| 71| 59| 67|04| 4| 19| |30.12| 0.00| 72| 62| 69|04| 4| 19| |29.92| 0.00| 77| 70| 80|04| 0| 14| |19| |30.28| 0.00| 69| 60| 72|04| 4| 17| |30.12| 0.00| 70| 62| 76|04| 0| 15| |29.90| 0.00| 75| 69| 82|06| 0| 11| |22| |30.28| 0.00| 67| 58| 72|06| 0| 15| |30.08| 0.00| 70| 62| 78|04| 0| 18| |29.90| 0.00| 72| 69| 90|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | SEP 13 | SEP 14 | SEP 15 | | | | | |01| |29.87| 0.00| 73| 71| 93|13| 0| 4| |29.90| 0.00| 71| 67| 88|09| 0| 4| |29.97| 0.00| 72| 71| 96|00| 0| 0| |04| |29.86| 0.00| 74| 72| 95|00| 0| 0| |29.90| 0.00| 69| 67| 94|00| 0| 0| |29.96| 0.00| 72| 71| 97|00| 0| 0| |07| |29.89| 0.00| 73| 72| 96|00| 0| 0| |29.93| 0.00| 68| 67| 97|00| 0| 0| |30.00| 0.00| 71| 71| 98|00| 0| 0| |10| |29.92| 0.00| 76| 73| 89|18| 0| 4| |29.96| 0.00| 77| 73| 89|22| 0| 7| |30.05| 0.00| 76| 72| 88|02| 0| 4| |13| |29.90| 0.00| 83| 73| 72|20| 0| 15| |29.92| 0.31| 78| 75| 89|27| 4| 23| |30.03| 0.00| 82| 71| 68|06| 0| 4| |16| |29.85| 0.00| 85| 70| 60|27| 0| 13| |29.90| 0.00| 82| 73| 75|15| 0| 10| |30.01| 0.00| 83| 72| 69|04| 0| 4| |19| |29.86| 0.00| 81| 69| 66|20| 0| 5| |29.92| 0.00| 79| 71| 78|20| 0| 4| |30.04| 0.00| 79| 71| 75|04| 0| 7| |22| |29.89| 0.00| 74| 68| 82|24| 0| 4| |29.96| 0.00| 73| 70| 92|00| 0| 0| |30.06| 0.00| 75| 71| 87|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | SEP 16 | SEP 17 | SEP 18 | | | | | |01| |30.08| 0.00| 73| 71| 94|00| 0| 0| |30.07| 0.00| 71| 70| 96|00| 0| 0| |30.01| 0.00| 74| 71| 92|04| 0| 12| |04| |30.06| 0.00| 71| 70| 95|00| 0| 0| |30.05| 0.00| 72| 69| 91|04| 0| 6| |29.97| 0.00| 73| 72| 97|06| 0| 7| |07| |30.08| 0.00| 70| 69| 97|00| 0| 0| |30.08| 0.00| 73| 70| 92|02| 0| 4| |29.98| 0.00| 73| 72| 95|04| 0| 11| |10| |30.11| 0.00| 78| 73| 84|04| 0| 11| |30.08| 0.00| 77| 72| 85|04| 0| 10| |30.00| 0.00| 76| 72| 89|04| 4| 18| |13| |30.09| 0.00| 82| 71| 70|04| 0| 12| |30.07| 0.00| 78| 72| 83|04| 0| 14| |29.97| 0.00| 79| 72| 79|04| 4| 18| |16| |30.07| 0.00| 82| 70| 67|04| 0| 15| |30.04| 0.00| 76| 72| 88|04| 4| 17| |29.93| 0.00| 78| 72| 83|04| 4| 21| |19| |30.07| 0.00| 77| 71| 81|04| 0| 14| |30.02| 0.00| 75| 71| 88|04| 0| 11| |29.92| 0.00| 76| 71| 86|04| 5| 21| |22| |30.08| 0.00| 73| 69| 90|00| 0| 0| |30.03| 0.00| 74| 71| 91|04| 0| 14| |29.93| 0.00| 74| 70| 88|04| 4| 15| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Precipitation | 0.03 | 0.06 | 0.08 | 0.11 | 0.16 | 0.24 | 0.31 | 0.31 | 0.31 | 0.33 | 0.33 | 0.33 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Date | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 14 | 02 | 02 | 02 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Time | 1203 | 1209 | 1213 | 1219 | 1229 | 1244 | 1258 | 1258 | 1258 | 0457 | 0457 | 0457 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ 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 2017: 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| |29.89| 0.00| 74| 70| 89|04| 4| 20| |29.87| 0.00| 72| 70| 95|29| 0| 10| |29.96| 0.00| 69| 67| 92|00| 0| 0| |04| |29.84| 0.00| 73| 70| 89|31| 4| 22| |29.86| 0.00| 70| 69| 95|00| 0| 0| |29.95| 0.00| 67| 65| 95|00| 0| 0| |07| |29.85| 0.00| 73| 69| 89|31| 4| 20| |29.90| 0.00| 69| 67| 94|00| 0| 0| |29.99| 0.00| 64| 63| 96|00| 0| 0| |10| |29.87| 0.00| 72| 69| 92|31| 0| 18| |29.95| 0.00| 75| 70| 86|00| 0| 0| |30.02| 0.00| 77| 69| 76|06| 0| 6| |13| |29.86| 0.00| 74| 71| 92|31| 5| 21| |29.93| 0.00| 82| 70| 67|29| 0| 16| |30.00| 0.00| 84| 68| 59|31| 0| 7| |16| |29.84| 0.00| 76| 72| 87|31| 4| 18| |29.90| 0.00| 85| 68| 57|29| 0| 19| |29.97| 0.00| 85| 70| 62|29| 0| 16| |19| |29.84| 0.00| 72| 71| 97|00| 0| 6| |29.91| 0.00| 81| 69| 66|00| 0| 0| |29.98| 0.00| 81| 69| 67|00| 0| 0| |22| |29.87| 0.00| 72| 70| 94|00| 0| 0| |29.95| 0.00| 73| 68| 85|02| 0| 5| |30.02| 0.00| 74| 69| 85|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | SEP 22 | SEP 23 | SEP 24 | | | | | |01| |30.04| 0.00| 70| 68| 92|00| 0| 0| |29.99| 0.00| 67| 65| 93|00| 0| 0| |30.03| 0.00| 70| 67| 92|00| 0| 0| |04| |29.99| 0.00| 67| 65| 94|00| 0| 0| |29.98| 0.00| 65| 63| 95|00| 0| 0| |30.01| 0.00| 67| 66| 94|00| 0| 0| |07| |30.02| 0.00| 66| 65| 97|00| 0| 0| |30.00| 0.00| 64| 63| 97|00| 0| 0| |30.04| 0.00| 66| 64| 96|00| 0| 0| |10| |30.04| 0.00| 75| 72| 90|29| 0| 12| |30.02| 0.00| 75| 71| 88|06| 0| 15| |30.04| 0.00| 76| 71| 83|06| 0| 10| |13| |30.00| 0.00| 84| 70| 63|31| 0| 13| |30.03| 0.00| 81| 69| 66|29| 0| 16| |30.03| 0.00| 83| 69| 62|04| 0| 14| |16| |29.97| 0.00| 81| 69| 67|04| 0| 11| |30.02| 0.00| 82| 69| 66|06| 0| 18| |29.99| 0.00| 83| 65| 55|06| 0| 16| |19| |29.96| 0.00| 79| 68| 68|00| 0| 0| |30.03| 0.00| 79| 69| 71|04| 0| 7| |29.98| 0.00| 78| 65| 64|06| 0| 15| |22| |29.99| 0.00| 70| 67| 88|00| 0| 0| |30.05| 0.00| 74| 69| 86|00| 0| 0| |30.00| 0.00| 73| 67| 83|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | SEP 25 | SEP 26 | SEP 27 | | | | | |01| |29.97| 0.00| 68| 65| 92|00| 0| 0| |29.90| 0.10| 72| 71| 98|04| 0| 13| |29.76| 0.00| 75| 75| 97|04| 5| 22| |04| |29.96| 0.00| 67| 65| 95|00| 0| 0| |29.87| 0.00| 72| 72| 99|04| 0| 14| |29.72| 0.00| 76| 75| 96|33| 5| 23| |07| |29.97| 0.00| 70| 69| 96|00| 0| 0| |29.88| 0.01| 72| 72|100|06| 0| 16| |29.73| 0.00| 76| 75| 96|33| 5| 26| |10| |29.98| 0.00| 74| 70| 87|04| 4| 20| |29.89| 0.00| 73| 73|100|04| 0| 15| |29.73| 0.00| 76| 75| 95|31| 7| 25| |13| |29.98| 0.00| 77| 71| 83|04| 4| 20| |29.86| 0.01| 75| 74| 97|04| 4| 18| |29.71| 0.00| 80| 76| 87|33| 7| 27| |16| |29.94| 0.00| 76| 70| 81|04| 5| 21| |29.80| 0.01| 76| 75| 96|04| 6| 36| |29.68| 0.00| 83| 76| 79|33| 11| 31| |19| |29.93| 0.00| 73| 69| 88|04| 5| 21| |29.79| 0.00| 75| 75| 98|04| 4| 21| |29.69| 0.00| 82| 75| 79|33| 6| 28| |22| |29.93| 0.00| 72| 70| 93|04| 4| 20| |29.79| 0.00| 75| 74| 98|04| 4| 19| |29.71| 0.00| 81| 74| 80|31| 4| 20| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | SEP 28 | SEP 29 | SEP 30 | | | | | |01| |29.71| 0.00| 78| 74| 87|31| 0| 14| |29.95| 0.00| 73| 60| 63|04| 6| 15| |30.08| 0.00| 60| 57| 89|00| 0| 0| |04| |29.71| 0.00| 74| 71| 89|29| 0| 12| |29.99| 0.00| 70| 55| 60|04| 6| 20| |30.08| 0.00| 58| 55| 92|00| 0| 0| |07| |29.75| 0.00| 72| 68| 89|29| 0| 4| |30.04| 0.00| 66| 51| 60|04| 6| 17| |30.11| 0.00| 57| 56| 95|00| 0| 0| |10| |29.81| 0.00| 79| 70| 74|31| 5| 19| |30.08| 0.00| 69| 55| 61|04| 0| 17| |30.15| 0.00| 68| 58| 70|31| 4| 19| |13| |29.80| 0.00| 83| 70| 66|31| 5| 19| |30.06| 0.00| 71| 57| 61|04| 0| 11| |30.17| 0.00| 70| 54| 57|31| 0| 18| |16| |29.80| 0.00| 85| 65| 51|29| 5| 19| |30.03| 0.00| 73| 57| 57|33| 0| 6| |30.17| 0.00| 70| 53| 55|33| 4| 20| |19| |29.85| 0.00| 79| 62| 55|04| 5| 20| |30.04| 0.00| 72| 59| 65|00| 0| 0| |30.21| 0.00| 66| 51| 59|31| 0| 10| |22| |29.92| 0.00| 75| 57| 53|04| 4| 16| |30.07| 0.00| 64| 58| 82|00| 0| 0| |30.26| 0.00| 65| 50| 59|33| 0| 21| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +------------------------------------------+---------------------------------------+---------------------------------------+
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| |29.986| 70| 66| 90| 0.5| 05 | 0.5| |04| |29.973| 68| 66| 92| 0.5| 36 | 0.4| |07| |29.996| 67| 65| 93| 0.5| 36 | 0.4| |10| |30.020| 73| 68| 84| 1.4| 01 | 1.0| |13| |30.003| 78| 68| 72| 1.8| 01 | 1.1| |16| |29.971| 79| 67| 69| 2.3| 01 | 1.5| |19| |29.980| 76| 66| 74| 1.4| 03 | 1.2| |22| |30.002| 71| 66| 84| 0.9| 03 | 0.7| +--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
September 2017: 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| |0.03|0.01| | | | | | | | | | | | | | | | |0.01|0.07|0.03|0.05|0.08|01 02|0.05|0.06| |0.12|0.21| | | | | | | | |0.01| | | | |0.07|0.17|0.03| | | |02 03| | | | | | | | | | | | | | | | | | | | | | | | |03 04| | | | | | | | | | | | | | | | | | | | | | | | |04 05| | | | | | | | | | | | | | | | | | | |0.08| | | | |05 | | | | | | | | | | | | | | | | | | | | | | | | | 06| | |0.01| | | |0.01| | | | | | | | |0.02|0.23|0.03|0.01|0.06|0.01| | | |06 07| |0.02| | | | | | | | | | | | | | | | | | | | | | |07 08| | | | | | | | | | | | | | | | | | | | | | | | |08 09| | | | | | | | | | | | | | | | | | | | | | | | |09 10| | | | | | | | | | | | | | | | | | | | | | | | |10 | | | | | | | | | | | | | | | | | | | | | | | | | 11| | | | | | | | | | | | | | | | | | | | | | | | |11 12| | | | | | | | | | | | | | | | | | | | | | | | |12 13| | | | | | | | | | | | | | | | | | | | | | | | |13 14| | | | | | | | | | | | |0.31| | | | | | | | | | | |14 15| | | | | | | | | | | | | | | | | | | | | | | | |15 | | | | | | | | | | | | | | | | | | | | | | | | | 16| | | | | | | | | | | | | | | | | | | | | | | | |16 17| | | | | | | | | | | | | | | | | | | | | | | | |17 18| | | | | | | | | | | | | | | | |0.02| | | | | | | |18 19| | | | | | | | |0.06| | |0.02| |0.01|0.01| | |0.10| | | | | | |19 20| | | | | | | | | | | | | | | | | | | | | | | | |20 | | | | | | | | | | | | | | | | | | | | | | | | | 21| | | | | | | | | | | | | | | | | | | | | | | | |21 22| | | | | | | | | | | | | | | | | | | | | | | | |22 23| | | | | | | | | | | | | | | | | | | | | | | | |23 24| | | | | | | | | | | | | | | | | | | | | | | | |24 25| | | | | | | | | | | | | | | | | | | | | | | | |25 | | | | | | | | | | | | | | | | | | | | | | | | | 26|0.10|0.10| | | | |0.01| | | | | |0.01|0.02| |0.01|0.02|0.01| |0.18| | | | |26 27| | | | | | | | | | | | | | | | | | | | | | | | |27 28| | | | | | | | | | | | | | | | | | | | | | | | |28 29| | | | | | | | | | | | | | | | | | | | | | | | |29 30| | | | | | | | | | | | | | | | | | | | | | | | |30 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- Sum|0.15|0.21|0.02|0.12|0.21|0.00|0.02|0.00|0.06|0.00|0.00|0.02|0.32|0.04|0.01|0.03|0.27|0.14|0.08|0.50|0.11|0.03|0.05|0.08|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.)