LOCAL CLIMATOLOGICAL DATA
Monthly Summary
May 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| 87.5 | 68.1 | 77.8 | 77.1 | 68| 76| 0| 13|.........| 0| 0.00| 0.0| 30.08| 29.77|29.934| 2.3| 2.2|192| 28|SSW| 0| 0| |
|02| 78.1 | 63.0 | 70.6 | 72.2 | 59| 67| 0| 6|..3......| 0| 1.56| 0.0| 29.88| 29.71|29.786| 1.5| 1.3|246| 31|SSW| 0| 0| |
|03| 76.9 | 55.1 | 66.0 | 66.0 | 51| 60| 0| 1|.........| 0| 0.00| 0.0| 30.16| 29.88|29.992| 0.3| 0.3| 11| 21|WNW| 0| 0| |
|04| 74.9 | 55.5 | 65.2 | 65.8 | 56| 69| 0| 1|.........| 0| 0.00| 0.0| 30.16| 29.86|30.057| 0.0| 0.0| 0| 22|SSE| 0| 0| |
|05| 72.5 | 65.2 | 68.8 | 68.8 | 67| 95| 0| 4|1.3......| 0| 2.37| 0.0| 29.82| 29.42|29.558| 0.0| 0.0| 0| 23|SSW| 0| 0| |
| | | | | | | | | | | | | | | | | | | | | | | | |
|06| 68.2 | 50.9 | 59.5 | 59.4 | 52| 78| 5| 0|.........| 0| 0.05| 0.0| 29.68| 29.45|29.515| 0.5| 0.5|270| 23|SSW| 0| 0| |
|07| 67.9 | 50.0 | 59.0 | 58.1 | 48| 71| 6| 0|.........| 0| 0.01| 0.0| 29.90| 29.68|29.775| 0.0| 0.0| 0| 21|WNW| 0| 0| |
|08| 66.8 | 45.9 | 56.4 | 57.8 | 45| 65| 8| 0|.........| 0| 0.00| 0.0| 29.98| 29.89|29.941| 0.0| 0.0| 0| 18| NW| 0| 0| |
|09| 70.4 | 45.3*| 57.8 | 58.8 | 45| 64| 7| 0|.........| 0| 0.00| 0.0| 29.99| 29.91|29.960| 0.0| 0.0| 0| 18| NE| 0| 0| |
|10| 77.1 | 50.9 | 64.0 | 64.7 | 54| 70| 1| 0|.........| 0| 0.00| 0.0| 30.00| 29.91|29.954| 0.0| 0.0| 0| 11| SE| 0| 0| |
| | | | | | | | | | | | | | | | | | | | | | | | |
|11| 64.5 | 55.6 | 60.0 | 60.8 | 57| 89| 4| 0|1.3......| 0| 0.11| 0.0| 29.95| 29.80|29.863| 1.1| 1.1| 45| 22| NE| 0| 0| |
|12| 56.9 | 54.1 | 55.5*| 55.2 | 54| 96| 9| 0|1........| 0| 0.88| 0.0| 29.95| 29.80|29.906| 2.7| 2.6| 48| 21| NE| 0| 0| |
|13| 62.9 | 53.7 | 58.3 | 58.9 | 56| 91| 6| 0|1........| 0| 0.36| 0.0| 29.81| 29.71|29.754| 0.7| 0.7|304| 21|WNW| 0| 0| |
|14| 82.3 | 48.0 | 65.2 | 66.9 | 56| 70| 0| 0|1........| 0| 0.00| 0.0| 29.85| 29.70|29.774| 1.4| 1.3|274| 24| W| 0| 0| |
|15| 77.3 | 59.1 | 68.2 | 69.2 | 46| 46| 0| 3|.........| 0| 0.00| 0.0| 30.00| 29.73|29.883| 0.3| 0.3|315| 25| NW| 0| 0| |
| | | | | | | | | | | | | | | | | | | | | | | | |
|16| 85.0 | 51.5 | 68.3 | 69.4 | 54| 62| 0| 4|.........| 0| 0.00| 0.0| 30.09| 30.00|30.045| 0.0| 0.0| 0| 13| S| 0| 0| |
|17| 94.2*| 65.1 | 79.6 | 79.9 | 68| 71| 0| 15|.........| 0| 0.00| 0.0| 30.08| 29.99|30.033| 0.9| 0.8|219| 18| W| 0| 0| |
|18| 90.4 | 68.0 | 79.2 | 79.7 | 67| 66| 0| 14|.......8.| 0| 0.00| 0.0| 30.11| 29.99|30.046| 0.5| 0.5|196| 22|SSW| 0| 0| |
|19| 93.0 | 70.2 | 81.6*| 79.8 | 70| 73| 0| 17|..3....8.| 0| T | 0.0| 30.05| 29.94|30.006| 1.8| 1.8|209| 22|SSW| 0| 0| |
|20| 80.9 | 60.0 | 70.4 | 68.9 | 63| 84| 0| 6|.........| 0| 0.00| 0.0| 30.25| 29.99|30.118| 3.4| 3.4| 45| 26| NE| 0| 0| |
| | | | | | | | | | | | | | | | | | | | | | | | |
|21| 69.9 | 58.8 | 64.3 | 64.3 | 58| 80| 0| 0|.........| 0| 0.00| 0.0| 30.26| 30.13|30.212| 0.8| 0.8| 45| 19| NE| 0| 0| |
|22| 80.9 | 64.6 | 72.8 | 71.8 | 69| 90| 0| 8|1.3......| 0| 0.66| 0.0| 30.11| 29.88|29.988| 0.3| 0.3|293| 22|WNW| 0| 0| |
|23| 68.1 | 61.4 | 64.8 | 64.9 | 64| 98| 0| 0|1........| 0| 1.25| 0.0| 29.92| 29.65|29.811| 0.7| 0.7| 62| 18|ENE| 0| 0| |
|24| 68.9 | 60.2 | 64.6 | 62.8 | 61| 94| 0| 0|1........| 0| 0.18| 0.0| 29.71| 29.62|29.670| 0.7| 0.6| 60| 17|ENE| 0| 0| |
|25| 80.8 | 60.9 | 70.9 | 69.7 | 65| 86| 0| 6|1.3......| 0| 0.05| 0.0| 29.62| 29.45|29.521| 0.9| 0.8|224| 38| W| 0| 0| |
| | | | | | | | | | | | | | | | | | | | | | | | |
|26| 81.8 | 59.8 | 70.8 | 71.5 | 60| 69| 0| 6|.........| 0| 0.00| 0.0| 29.90| 29.64|29.779| 1.7| 1.7|281| 22| W| 0| 0| |
|27| 89.2 | 59.8 | 74.5 | 75.4 | 65| 72| 0| 10|.........| 0| 0.09| 0.0| 29.92| 29.81|29.869| 0.2| 0.2|225| 19| SW| 0| 0| |
|28| 79.4 | 64.6 | 72.0 | 71.0 | 68| 90| 0| 7|1.3......| 0| 0.10| 0.0| 29.86| 29.75|29.800| 0.2| 0.2| 45| 21|WNW| 0| 0| |
|29| 86.2 | 64.5 | 75.3 | 74.7 | 69| 83| 0| 11|1........| 0| 0.00| 0.0| 30.02| 29.77|29.884| 0.0| 0.0| 0| 17|WNW| 0| 0| |
|30| 83.9 | 68.7 | 76.3 | 74.1 | 71| 90| 0| 12|1........| 0| 0.29| 0.0| 30.05| 29.97|30.010| 0.0| 0.0| 0| 22|WNW| 0| 0| |
| | | | | | | | | | | | | | | | | | | | | | | | |
|31| 86.0 | 66.6 | 76.3 | 74.3 | 70| 87| 0| 12|1........| 0| 0.48| 0.0| 30.02| 29.95|29.992| 0.3| 0.3| 45| 20| NE| 0| 0| |
+--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+
| Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- |
+------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+
|2402.8|1825.1|------|------|---|----| 46| 156| Days | 8.44| 0.0| 30.26| 29.42|29.885| 0.7| 0.1|317| 38| W| 0| 0| ---- |
+------+------+------+------+---+----+----+----+------------|+4.06" OR 193% OF NORMAL +------+----+----+---+---+---+---+---+------+
| Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg |
+------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+
| 77.5| 58.9| 68.2 | 68.1 | 60|77.4|----|----|≥.01 Inch 15|23.66| 6.0| 21 | 5 |------|----|----|---| 25 | 1+ | |
+ -0.1 +0.9 +0.4 +------+---+----+----+----+------------|+4.83" OR 126% 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 |2721| 310|Thunder 7|Precipitation | Snow, Ice Plts | and Date |
+--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+
| ≥90°F | ≤32°F | ≤32°F | ≤0°F |----|----|Heavy Fog 0| 2.37| 5 | 0.0 | - | 0 | - |
+--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+
| 3 | 0 | 0 | 0 |----|----| Clear 11 Partly Cloudy 10 Cloudy 10 |
+--------+---------+--------+--------+----+----+------------------------------------------+
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: 2nd, 5th,12th,13th,15th,19th,23rd,27th
MAY 2017 WAS THE 2ND WETTEST MAY IN THE MAY STATION DATABASE TO 1977.
The top five wettest Mays include: 1) 9.49" 2012 2) 8.44" 2017 3) 8.06" 1988 4) 7.76" 1978 5) 7.38" 2014.
MAY 2017 STATION RECORDS:
2nd - RAINFALL 1.56" [previous 1.51" 2011]
5th - RAINFALL 2.37" [previous 1.25" 1988]
5th - TEMPERATURE Max low 65° [previous 64° in 1993]
9th - TEMPERATURE Minimum TIED 45° [previous 1980]
12th - RAINFALL 0.88" [previous 0.68" 1985]
17th - TEMPERATURE Maximum 94° [previous 90° 1991]
24th - RAINFALL 1.25" [previous 1.23" 2003]
25th - WIND GUST 38mph [previous 30mph 2013]
MONTHLY AVERAGE MAXIMUM TEMP OF 77.5° WAS 0.1° BELOW NORMAL
MONTHLY AVERAGE MINIMUM TEMP OF 58.9° WAS 0.9° ABOVE NORMAL
MONTHLY AVERAGE TEMP OF 68.2° WAS 0.4° ABOVE NORMAL
MAXIMUM TEMP: 94° ON THE 17th
MINIMUM TEMP: 45° ON THE 9th
DAYS WITH TEMPERATURES:
MAXIMUM >= 90°: 3
MAXIMUM <= 32°: 0
MINIMUM <= 32°: 0
MINIMUM <= 0°: 0
HEATING DEGREE DAYS: 50.5
COOLING DEGREE DAYS: 149.5
DAYS WITH HEATING DEGREE DAYS: 11
DAYS WITH COOLING DEGREE DAYS: 18
PRECIP TOTAL OF 8.44" WAS 4.06" ABOVE NORMAL (193% OF NORMAL)
GREATEST DAILY RAINFALL: 2.37" on the 5th
GREATEST 24-HOUR RAINFALL: 2.37" on the 5th
DAYS WITH MEASUREABLE PRECIP: 15 OF 30 DAYS OR 48.39%
AVERAGE DAILY PRECIP: 0.27"
NORMAL DAILY PRECIP: 0.14"
DAYS WITH PRECIP >= 0.01" 15
DAYS WITH PRECIP >= 0.10" 11
DAYS WITH PRECIP >= 0.50" 5
DAYS WITH PRECIP >= 1.00" 3
DAYS WITH THUNDERSTORMS: 7
NUMBER OF THUNDERSTORMS: 7
DAYS WITH SNOW: 0
SNOWFALL TOTAL: 0
SEASONAL SNOWFALL 2016-2017 (beginning November 2016): 6.0"
CLOUDY DAYS: 10
PARTLY CLOUDY DAYS 10
SUNNY/CLEAR DAYS: 11
DAYS WITH F/GF: 13
DAYS WITH DENSE FOG: 0
DAYS WITH FROST: 0
YEAR-TO-DATE
YEARLY AVERAGE MAXIMUM TEMP OF 65.8° WAS 3.9° ABOVE NORMAL
YEARLY AVERAGE MINIMUM TEMP OF 46.5° WAS 3.8° ABOVE NORMAL
YEARLY AVERAGE TEMP OF 56.2° WAS 3.9° ABOVE NORMAL
MAXIMUM TEMP: 94° on May 17th
MINIMUM TEMP: 16° on January 8th and 10th
DAYS WITH TEMPERATURES:
MAXIMUM >= 90°: 6
MAXIMUM <= 32°: 2
MINIMUM <= 32°: 22
MINIMUM <= 0°: 0
HEATING DEGREE DAYS: 1630.5
COOLING DEGREE DAYS: 295.5
DAYS WITH HEATING DEGREE DAYS: 107
DAYS WITH COOLING DEGREE DAYS: 41
PRECIP TOTAL OF 23.66" WAS 4.83" ABOVE NORMAL (126% OF NORMAL).
GREATEST DAILY RAINFALL: 3.36" on March 31st
GREATEST 24-HOUR RAINFALL: 3.36" on March 31st
DAYS WITH MEASUREABLE PRECIP: 54 of 151 or 35.76%
AVERAGE DAILY PRECIP: 0.16"
NORMAL DAILY PRECIP: 0.12"
DAYS WITH PRECIP >= 0.01" 54
DAYS WITH PRECIP >= 0.10" 35
DAYS WITH PRECIP >= 0.50" 12
DAYS WITH PRECIP >= 1.00" 7
DAYS WITH THUNDERSTORMS: 12
NUMBER OF THUNDERSTORMS: 12
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: 34
PARTLY CLOUDY DAYS: 68
SUNNY/CLEAR DAYS: 49
DAYS WITH F/GF: 34
DAYS WITH DENSE FOG: 2
DAYS WITH FROST: 14
OBSERVATIONS AT 3-HOUR INTERVALS
May 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 |
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 1 | MAY 2 | MAY 3 |
| | | |
|01| |30.08| 0.00| 73| 69| 88|20| 4| 15| |29.77| 0.00| 74| 69| 83|20| 0| 16| |29.88| 0.00| 62| 52| 69|00| 0| 0|
|04| |30.05| 0.00| 69| 68| 95|18| 4| 14| |29.71| 0.88| 71| 70| 97|22| 0| 14| |29.89| 0.00| 58| 52| 81|00| 0| 0|
|07| |30.04| 0.00| 69| 68| 97|15| 0| 12| |29.74| 0.00| 67| 65| 95|24| 0| 17| |29.94| 0.00| 57| 53| 86|00| 0| 0|
|10| |30.02| 0.00| 78| 70| 76|20| 5| 24| |29.79| 0.00| 72| 63| 75|27| 4| 20| |29.98| 0.00| 70| 51| 50|29| 0| 17|
|13| |29.95| 0.00| 84| 69| 61|20| 4| 21| |29.80| 0.00| 76| 55| 48|20| 4| 31| |29.98| 0.00| 75| 47| 36|27| 0| 21|
|16| |29.85| 0.00| 87| 69| 55|18| 4| 21| |29.78| 0.00| 78| 49| 37|24| 4| 24| |29.99| 0.00| 76| 50| 39|33| 0| 17|
|19| |29.78| 0.00| 82| 69| 65|18| 0| 25| |29.80| 0.00| 77| 49| 38|29| 0| 24| |30.04| 0.00| 67| 50| 54|06| 0| 20|
|22| |29.79| 0.00| 75| 67| 75|15| 0| 23| |29.86| 0.00| 66| 51| 58|00| 0| 0| |30.15| 0.00| 64| 50| 60|02| 0| 15|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 4 | MAY 5 | MAY 6 |
| | | |
|01| |30.16| 0.00| 61| 48| 63|06| 0| 4| |29.82| 0.00| 68| 63| 84|15| 0| 19| |29.47| 0.00| 62| 51| 67|20| 0| 19|
|04| |30.14| 0.00| 58| 49| 72|04| 0| 4| |29.70| 0.01| 67| 67| 98|13| 0| 17| |29.45| 0.00| 56| 51| 83|20| 0| 15|
|07| |30.13| 0.00| 57| 49| 75|00| 0| 0| |29.59| 0.00| 69| 69| 99|15| 0| 15| |29.46| 0.00| 55| 52| 88|20| 0| 10|
|10| |30.14| 0.00| 68| 55| 63|18| 0| 17| |29.60| 0.68| 67| 66| 98|13| 0| 13| |29.48| 0.00| 64| 56| 74|22| 0| 20|
|13| |30.08| 0.00| 71| 58| 62|06| 0| 11| |29.54| 0.02| 68| 67| 99|13| 0| 10| |29.47| 0.00| 67| 56| 69|20| 0| 23|
|16| |30.01| 0.00| 73| 61| 64|15| 0| 22| |29.48| 0.01| 71| 70| 97|15| 0| 13| |29.49| 0.04| 59| 56| 89|20| 0| 12|
|19| |29.96| 0.00| 69| 60| 74|11| 0| 14| |29.42| 0.00| 71| 69| 91|15| 0| 16| |29.56| 0.00| 61| 50| 67|27| 4| 23|
|22| |29.92| 0.00| 67| 61| 83|13| 0| 16| |29.44| 0.00| 68| 64| 87|15| 0| 12| |29.65| 0.00| 53| 49| 84|18| 0| 5|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 7 | MAY 8 | MAY 9 |
| | | |
|01| |29.68| 0.00| 52| 50| 91|20| 0| 6| |29.89| 0.00| 55| 48| 79|00| 0| 0| |29.96| 0.00| 50| 46| 84|00| 0| 0|
|04| |29.69| 0.00| 52| 50| 93|22| 0| 6| |29.90| 0.00| 50| 43| 78|00| 0| 0| |29.95| 0.00| 47| 45| 91|00| 0| 0|
|07| |29.75| 0.00| 52| 48| 87|27| 0| 11| |29.96| 0.00| 49| 47| 92|00| 0| 0| |29.97| 0.00| 49| 48| 96|00| 0| 0|
|10| |29.79| 0.00| 60| 44| 56|29| 0| 21| |29.98| 0.00| 61| 46| 58|24| 0| 5| |29.99| 0.00| 61| 48| 61|29| 0| 7|
|13| |29.79| 0.00| 65| 46| 50|29| 0| 19| |29.95| 0.00| 64| 44| 47|31| 0| 18| |29.99| 0.00| 67| 40| 37|04| 0| 18|
|16| |29.77| 0.00| 66| 48| 51|24| 0| 5| |29.91| 0.00| 66| 46| 47|27| 0| 5| |29.94| 0.00| 69| 42| 37|02| 0| 5|
|19| |29.80| 0.00| 63| 49| 59|00| 0| 0| |29.95| 0.00| 64| 47| 53|00| 0| 0| |29.92| 0.00| 69| 48| 47|18| 0| 6|
|22| |29.85| 0.00| 55| 49| 82|00| 0| 0| |29.96| 0.00| 55| 46| 72|00| 0| 0| |29.97| 0.00| 58| 48| 68|13| 0| 4|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 10 | MAY 11 | MAY 12 |
| | | |
|01| |29.96| 0.00| 56| 50| 83|00| 0| 0| |29.95| 0.00| 64| 58| 79|00| 0| 0| |29.93| 0.01| 55| 53| 93|04| 0| 13|
|04| |29.94| 0.00| 51| 49| 90|00| 0| 0| |29.89| 0.00| 60| 58| 92|00| 0| 0| |29.91| 0.00| 55| 52| 92|06| 0| 15|
|07| |29.97| 0.00| 55| 53| 95|24| 0| 4| |29.88| 0.00| 60| 58| 93|00| 0| 0| |29.93| 0.00| 56| 53| 92|04| 0| 13|
|10| |29.99| 0.00| 69| 54| 59|00| 0| 0| |29.83| 0.00| 64| 57| 78|13| 0| 4| |29.94| 0.00| 56| 55| 94|04| 4| 15|
|13| |29.96| 0.00| 73| 57| 56|00| 0| 0| |29.82| 0.00| 64| 59| 84|02| 0| 7| |29.95| 0.00| 55| 54| 95|04| 6| 21|
|16| |29.91| 0.00| 77| 58| 53|06| 0| 4| |29.80| 0.00| 61| 58| 90|04| 0| 16| |29.92| 0.04| 54| 54| 97|04| 6| 19|
|19| |29.93| 0.00| 71| 56| 59|11| 0| 5| |29.85| 0.00| 58| 56| 93|04| 4| 20| |29.88| 0.03| 55| 54| 98|04| 5| 17|
|22| |29.97| 0.00| 65| 55| 71|15| 0| 4| |29.90| 0.00| 57| 53| 89|04| 4| 18| |29.85| 0.10| 56| 56| 99|04| 0| 16|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 13 | MAY 14 | MAY 15 |
| | | |
|01| |29.77| 0.01| 58| 58|100|00| 0| 0| |29.81| 0.00| 56| 51| 82|33| 4| 21| |29.73| 0.00| 69| 60| 74|18| 0| 13|
|04| |29.72| 0.00| 60| 60|100|00| 0| 0| |29.81| 0.00| 50| 48| 91|00| 0| 0| |29.82| 0.00| 66| 53| 63|04| 0| 14|
|07| |29.73| 0.14| 57| 57|100|00| 0| 18| |29.85| 0.00| 51| 51| 99|00| 0| 0| |29.89| 0.00| 63| 36| 36|04| 0| 15|
|10| |29.75| 0.00| 57| 56| 99|27| 0| 13| |29.83| 0.00| 67| 61| 81|20| 0| 15| |29.92| 0.00| 67| 44| 42|04| 0| 6|
|13| |29.75| 0.00| 60| 58| 92|31| 0| 15| |29.77| 0.00| 76| 61| 60|27| 0| 20| |29.90| 0.00| 72| 43| 36|31| 0| 20|
|16| |29.75| 0.00| 63| 57| 80|29| 0| 17| |29.73| 0.00| 81| 59| 47|27| 4| 22| |29.86| 0.00| 76| 46| 34|33| 0| 18|
|19| |29.76| 0.00| 62| 55| 78|29| 0| 17| |29.70| 0.00| 81| 59| 46|24| 4| 17| |29.89| 0.00| 77| 43| 30|33| 0| 15|
|22| |29.81| 0.00| 57| 53| 86|27| 0| 4| |29.72| 0.00| 71| 61| 70|20| 0| 14| |29.96| 0.00| 65| 49| 56|00| 0| 0|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 16 | MAY 17 | MAY 18 |
| | | |
|01| |30.01| 0.00| 57| 50| 76|00| 0| 0| |30.04| 0.00| 67| 64| 91|00| 0| 0| |30.04| 0.00| 75| 66| 74|20| 0| 13|
|04| |30.01| 0.00| 54| 49| 84|00| 0| 0| |30.01| 0.00| 66| 64| 96|00| 0| 0| |30.06| 0.00| 72| 63| 73|22| 0| 11|
|07| |30.06| 0.00| 56| 53| 89|00| 0| 0| |30.06| 0.00| 68| 67| 99|00| 0| 0| |30.09| 0.00| 71| 63| 77|18| 0| 11|
|10| |30.07| 0.00| 73| 52| 47|27| 0| 4| |30.07| 0.00| 82| 73| 74|22| 0| 10| |30.10| 0.00| 79| 68| 69|22| 0| 19|
|13| |30.08| 0.00| 80| 54| 41|31| 0| 10| |30.04| 0.00| 91| 72| 54|20| 0| 13| |30.06| 0.00| 87| 70| 57|22| 0| 16|
|16| |30.03| 0.00| 84| 53| 34|11| 0| 5| |30.00| 0.00| 94| 71| 47|20| 5| 18| |30.00| 0.00| 90| 72| 55|20| 0| 17|
|19| |30.03| 0.00| 80| 60| 50|18| 0| 5| |30.01| 0.00| 90| 68| 48|22| 0| 14| |29.99| 0.00| 87| 69| 55|18| 4| 19|
|22| |30.05| 0.00| 69| 60| 72|00| 0| 0| |30.04| 0.00| 80| 66| 63|22| 0| 7| |30.03| 0.00| 78| 66| 67|22| 0| 4|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Precipitation | 0.08 | 0.16 | 0.23 | 0.31 | 0.46 | 0.68 | 0.90 | 1.11 | 1.34 | 1.56 | 1.66 | 1.77 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Ended: Date | 02 | 02 | 02 | 02 | 02 | 02 | 02 | 05 | 05 | 05 | 05 | 05 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Ended: Time | 0304 | 0310 | 0314 | 0320 | 0330 | 0344 | 0358 | 0919 | 0939 | 1000 | 0958 | 1000 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
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 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 |
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 19 | MAY 20 | MAY 21 |
| | | |
|01| |30.02| 0.00| 74| 68| 82|20| 0| 18| |30.01| 0.00| 73| 69| 89|20| 0| 7| |30.25| 0.00| 60| 56| 86|04| 0| 16|
|04| |30.03| 0.00| 71| 67| 87|20| 4| 17| |30.00| 0.00| 70| 69| 95|20| 0| 7| |30.22| 0.00| 59| 55| 87|04| 4| 17|
|07| |30.05| 0.00| 72| 68| 88|18| 0| 12| |30.03| 0.00| 72| 70| 93|00| 0| 0| |30.26| 0.00| 61| 57| 85|04| 0| 10|
|10| |30.03| 0.00| 82| 71| 69|20| 4| 22| |30.07| 0.00| 80| 70| 71|29| 0| 14| |30.26| 0.00| 66| 57| 74|04| 0| 15|
|13| |30.00| 0.00| 88| 73| 60|20| 0| 15| |30.15| 0.00| 68| 63| 82|04| 6| 25| |30.24| 0.00| 69| 61| 75|04| 0| 17|
|16| |29.96| 0.00| 92| 74| 55|22| 4| 16| |30.17| 0.00| 65| 59| 81|04| 7| 23| |30.20| 0.00| 68| 59| 74|04| 4| 16|
|19| |29.98| 0.00| 83| 68| 60|24| 4| 20| |30.21| 0.00| 61| 57| 86|04| 7| 26| |30.18| 0.00| 65| 58| 77|06| 0| 14|
|22| |29.99| 0.00| 75| 69| 81|18| 0| 12| |30.24| 0.00| 60| 56| 86|04| 5| 23| |30.17| 0.00| 65| 61| 87|04| 0| 7|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 22 | MAY 23 | MAY 24 |
| | | |
|01| |30.11| 0.00| 65| 62| 89|04| 0| 4| |29.92| 0.00| 68| 67| 97|00| 0| 0| |29.65| 0.00| 61| 61| 99|06| 0| 11|
|04| |30.07| 0.00| 66| 65| 95|00| 0| 0| |29.90| 0.00| 66| 65| 97|00| 0| 0| |29.62| 0.01| 62| 61| 99|00| 0| 0|
|07| |30.06| 0.00| 68| 67| 97|00| 0| 0| |29.89| 0.00| 67| 66| 97|04| 0| 16| |29.66| 0.00| 61| 61| 99|04| 0| 6|
|10| |30.03| 0.00| 76| 72| 86|15| 0| 5| |29.88| 0.04| 66| 66| 98|04| 0| 13| |29.70| 0.00| 61| 60| 97|02| 0| 16|
|13| |29.97| 0.00| 81| 73| 77|15| 0| 7| |29.85| 0.07| 65| 64| 98|02| 0| 7| |29.70| 0.00| 66| 63| 88|15| 0| 5|
|16| |29.88| 0.66| 75| 74| 95|18| 0| 16| |29.77| 0.01| 65| 64| 98|04| 0| 18| |29.68| 0.00| 67| 63| 85|04| 0| 11|
|19| |29.90| 0.00| 72| 70| 92|31| 0| 17| |29.71| 0.24| 63| 62| 98|02| 0| 14| |29.69| 0.00| 63| 60| 90|04| 4| 17|
|22| |29.94| 0.00| 70| 68| 93|00| 0| 0| |29.67| 0.07| 62| 62| 99|04| 4| 18| |29.68| 0.16| 60| 59| 96|04| 4| 16|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 25 | MAY 26 | MAY 27 |
| | | |
|01| |29.58| 0.00| 62| 62| 99|04| 0| 10| |29.64| 0.00| 61| 58| 92|20| 0| 12| |29.90| 0.00| 65| 60| 82|00| 0| 0|
|04| |29.48| 0.00| 68| 68|100|18| 0| 13| |29.68| 0.00| 61| 57| 88|20| 0| 13| |29.90| 0.00| 62| 59| 89|00| 0| 0|
|07| |29.49| 0.00| 69| 69|100|00| 0| 0| |29.75| 0.00| 65| 59| 82|27| 0| 10| |29.91| 0.00| 64| 62| 93|00| 0| 0|
|10| |29.52| 0.00| 74| 72| 94|20| 0| 13| |29.78| 0.00| 74| 62| 65|29| 4| 19| |29.90| 0.00| 79| 67| 67|00| 0| 0|
|13| |29.51| 0.00| 77| 68| 73|22| 0| 6| |29.80| 0.00| 79| 63| 59|27| 4| 21| |29.87| 0.00| 86| 67| 53|18| 0| 11|
|16| |29.46| 0.00| 80| 63| 56|22| 4| 21| |29.79| 0.00| 81| 61| 51|27| 4| 21| |29.83| 0.00| 89| 69| 52|24| 0| 15|
|19| |29.53| 0.00| 66| 61| 85|15| 0| 6| |29.82| 0.00| 80| 60| 50|27| 4| 22| |29.81| 0.00| 85| 68| 57|20| 0| 13|
|22| |29.59| 0.00| 61| 57| 85|18| 0| 7| |29.88| 0.00| 71| 59| 67|00| 0| 0| |29.85| 0.05| 71| 66| 84|22| 4| 19|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 28 | MAY 29 | MAY 30 |
| | | |
|01| |29.86| 0.00| 66| 63| 91|00| 0| 0| |29.77| 0.00| 67| 65| 95|00| 0| 0| |30.01| 0.00| 70| 67| 93|15| 0| 11|
|04| |29.82| 0.00| 65| 63| 95|00| 0| 0| |29.77| 0.00| 66| 65| 97|00| 0| 0| |29.99| 0.01| 69| 68| 95|04| 0| 4|
|07| |29.82| 0.00| 67| 67| 99|02| 0| 7| |29.83| 0.00| 66| 66| 99|27| 0| 4| |30.02| 0.00| 69| 68| 97|04| 0| 4|
|10| |29.82| 0.00| 75| 71| 87|09| 0| 5| |29.87| 0.00| 76| 71| 84|27| 0| 6| |30.03| 0.00| 72| 71| 95|15| 0| 4|
|13| |29.79| 0.00| 78| 73| 83|11| 0| 7| |29.90| 0.00| 83| 70| 65|29| 0| 17| |30.04| 0.00| 76| 74| 93|00| 0| 0|
|16| |29.76| 0.06| 72| 70| 93|04| 4| 18| |29.91| 0.00| 86| 71| 60|06| 0| 7| |30.00| 0.00| 83| 75| 77|13| 0| 5|
|19| |29.78| 0.00| 73| 69| 86|33| 0| 7| |29.94| 0.00| 82| 72| 73|15| 0| 12| |29.97| 0.00| 81| 73| 78|06| 0| 5|
|22| |29.78| 0.00| 69| 66| 92|02| 0| 4| |30.00| 0.00| 72| 68| 88|11| 0| 15| |30.00| 0.00| 74| 71| 89|13| 0| 4|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAY 31 | | |
| | | |
|01| |30.00| 0.48| 68| 67| 95|04| 4| 19| | |
|04| |29.98| 0.00| 67| 66| 97|00| 0| 0| | |
|07| |30.00| 0.00| 68| 68|100|00| 0| 4| | |
|10| |30.00| 0.00| 75| 74| 95|24| 0| 4| | |
|13| |30.02| 0.00| 83| 73| 72|29| 0| 5| | |
|16| |29.97| 0.00| 86| 74| 68|04| 0| 5| | |
|19| |29.97| 0.00| 76| 71| 83|04| 0| 16| | |
|22| |30.01| 0.00| 72| 66| 82|04| 0| 10| | |
+--+----+-----+-----+---+---+---+--+---+---+---------------------------------------+---------------------------------------+
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| |29.893| 64| 59| 85| 0.4| 36 | 0.1|
|04| |29.874| 62| 59| 90| 0.4| 17 | 0.2|
|07| |29.897| 62| 59| 91| 0.0| 00 | 0.0|
|10| |29.908| 70| 61| 75| 0.7| 25 | 0.3|
|13| |29.894| 74| 61| 67| 0.8| 05 | 0.1|
|16| |29.857| 75| 61| 64| 1.6| 26 | 0.1|
|19| |29.863| 72| 60| 68| 1.3| 35 | 0.2|
|22| |29.894| 66| 59| 80| 0.7| 05 | 0.4|
+--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
May 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| | | | | | | | | | | | | | | | | | | | | | | | |01
02| |0.01|0.60|0.88|0.06| | |0.01| | | | | | | | | | | | | | | | |02
03| | | | | | | | | | | | | | | | | | | | | | | | |03
04| | | | | | | | | | | | | | | | | | | | | | | | |04
05| |0.03|0.29|0.01| | | |0.21|0.87|0.68|0.19|0.02|0.02|0.01|0.03|0.01| | | | | | | | |05
| | | | | | | | | | | | | | | | | | | | | | | | |
06| | | | | | | | | | | | | | | |0.04| |0.01| | | | | | |06
07| | |0.01| | | | | | | | | | | | | | | | | | | | | |07
08| | | | | | | | | | | | | | | | | | | | | | | | |08
09| | | | | | | | | | | | | | | | | | | | | | | | |09
10| | | | | | | | | | | | | | | | | | | | | | | | |10
| | | | | | | | | | | | | | | | | | | | | | | | |
11| |0.01|0.06| | | | | | | | |0.03| |0.01| | | | | | | | | | |11
12|0.01| |0.06| | | | |0.04| | | |0.01| |0.11|0.01|0.04|0.04|0.02|0.03|0.01|0.26|0.10|0.13|0.01|12
13|0.01| | | | | |0.14|0.19|0.02| | | | | | | | | | | | | | | |13
14| | | | | | | | | | | | | | | | | | | | | | | | |14
15| | | | | | | | | | | | | | | | | | | | | | | | |15
| | | | | | | | | | | | | | | | | | | | | | | | |
16| | | | | | | | | | | | | | | | | | | | | | | | |16
17| | | | | | | | | | | | | | | | | | | | | | | | |17
18| | | | | | | | | | | | | | | | | | | | | | | | |18
19| | | | | | | | | | | | | | | | | | | | | | | | |19
20| | | | | | | | | | | | | | | | | | | | | | | | |20
| | | | | | | | | | | | | | | | | | | | | | | | |
21| | | | | | | | | | | | | | | | | | | | | | | | |21
22| | | | | | | | | | | | | | | |0.66| | | | | | | | |22
23| | | | | | | | |0.03|0.04|0.08|0.09|0.07|0.03|0.02|0.01|0.01|0.01|0.24|0.14|0.13|0.07|0.20|0.08|23
24| | | |0.01| | | | | | | | | | | | | | | | | |0.16|0.01| |24
25| | | | |0.01| | | | | | | | | | | | |0.04| | | | | | |25
| | | | | | | | | | | | | | | | | | | | | | | | |
26| | | | | | | | | | | | | | | | | | | | | | | | |26
27| | | | | | | | | | | | | | | | | | | | |0.03|0.05| |0.01|27
28| | | | | | | | | | | | | | |0.04|0.06| | | | | | | | |28
29| | | | | | | | | | | | | | | | | | | | | | | | |29
30| | | |0.01| | | | | | |0.19|0.03| | | | | | | | | | | |0.06|30
31|0.48| | | | | | | | | | | | | | | | | | | | | | | |31
---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+---
Sum|0.50|0.05|1.02|0.91|0.07|0.00|0.14|0.45|0.92|0.72|0.46|0.18|0.09|0.16|0.10|0.82|0.05|0.08|0.27|0.15|0.42|0.38|0.34|0.16|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.)