LOCAL CLIMATOLOGICAL DATA
Monthly Summary
March 2021
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| 67.1 | 48.1 | 57.6 | 59.8 | 56| 89| 7| 0|1........| 0| 0.10| 0.0| 30.04| 29.73|29.837| 8.3| 4.9|255| 26|NNW| 0| 0| |
|02| 48.1 | 34.5 | 41.3 | 41.7 | 27| 58| 23| 0|.........| 0| 0.00| 0.0| 30.30| 30.09|30.216| 8.3| 5.3| 23| 22|NNE| 0| 0| |
|03| 57.9 | 29.9 | 43.9 | 43.4 | 32| 67| 21| 0|.........| 0| 0.00| 0.0| 30.14| 29.88|29.985| 3.9| 1.6|198| 15|NNE| 0| 0| |
|04| 57.2 | 33.8 | 45.5 | 46.1 | 35| 67| 19| 0|.........| 0| 0.00| 0.0| 29.97| 29.83|29.892| 6.0| 4.6| 32| 25| NE| 0| 0| |
|05| 45.4 | 32.5 | 39.0 | 38.8 | 19| 47| 26| 0|.........| 0| 0.00| 0.0| 30.11| 29.98|30.049|10.3| 9.7|337| 27| N| 0| 0| |
| | | | | | | | | | | | | | | | | | | | | | | | |
|06| 51.7 | 29.8 | 40.8 | 40.9 | 25| 56| 24| 0|.........| 0| 0.00| 0.0| 30.22| 30.10|30.155| 6.0| 3.3|288| 24| W| 0| 0| |
|07| 45.4 | 31.3 | 38.3*| 39.2 | 28| 66| 27| 0|.........| 0| 0.00| 0.0| 30.41| 30.23|30.323| 6.0| 5.3| 43| 21|NNE| 0| 0| |
|08| 54.3 | 26.3*| 40.3 | 40.1 | 27| 65| 25| 0|.........| 0| 0.00| 0.0| 30.52| 30.42|30.463| 3.5| 1.8|276| 19| W| 0| 0| |
|09| 69.8 | 31.5 | 50.7 | 50.5 | 33| 57| 14| 0|.........| 0| 0.00| 0.0| 30.48| 30.35|30.418| 4.3| 3.6|221| 20| SW| 0| 0| |
|10| 74.5 | 40.8 | 57.7 | 57.3 | 40| 56| 7| 0|.........| 0| 0.00| 0.0| 30.45| 30.36|30.403| 6.0| 5.6|178| 22|SSW| 0| 0| |
| | | | | | | | | | | | | | | | | | | | | | | | |
|11| 75.2 | 46.9 | 61.0 | 61.3 | 44| 55| 4| 0|.........| 0| 0.00| 0.0| 30.43| 30.23|30.325| 7.8| 7.7|211| 30|SSW| 0| 0| |
|12| 79.3 | 57.0 | 68.2 | 66.1 | 54| 67| 0| 3|.........| 0| 0.00| 0.0| 30.25| 30.10|30.177| 8.3| 7.2|241| 26| W| 0| 0| |
|13| 62.8 | 43.2 | 53.0 | 54.3 | 38| 57| 12| 0|.........| 0| 0.00| 0.0| 30.34| 30.16|30.250| 8.2| 3.5| 37| 27| NE| 0| 0| |
|14| 66.6 | 38.4 | 52.5 | 53.0 | 33| 53| 12| 0|1........| 0| 0.00| 0.0| 30.18| 29.98|30.098| 6.8| 4.2|323| 27|NNE| 0| 0| |
|15| 56.4 | 39.4 | 47.9 | 44.5 | 23| 45| 17| 0|.........| 0| 0.02| 0.0| 30.40| 30.16|30.317|11.3| 9.3| 34| 30| N| 0| 0| |
| | | | | | | | | | | | | | | | | | | | | | | | |
|16| 46.7 | 35.7 | 41.2 | 41.0 | 40| 98| 23| 0|1........| 0| 0.51| 0.0| 30.34| 30.03|30.178| 5.7| 3.1|116| 18|ENE| 0| 0| |
|17| 50.3 | 45.2 | 47.8 | 47.4 | 47| 99| 17| 0|12.......| 0| 0.03| 0.0| 30.12| 30.02|30.082| 7.8| 7.2| 20| 18| N| 0| 0| |
|18| 73.6 | 48.3 | 60.9 | 58.4 | 58| 98| 4| 0|1........| 0| 0.16| 0.0| 30.07| 29.55|29.815| 6.5| 4.7|180| 27| N| 0| 0| |
|19| 59.3 | 37.1 | 48.2 | 44.1 | 38| 82| 17| 0|1........| 0| 0.64| 0.0| 30.37| 29.61|30.038|15.4|14.5| 47| 48| NE| 0| 0| |
|20| 48.5 | 40.3 | 44.4 | 43.7 | 35| 72| 20| 0|.........| 0| 0.00| 0.0| 30.53| 30.38|30.479|11.8|11.6| 49| 29| NE| 0| 0| |
| | | | | | | | | | | | | | | | | | | | | | | | |
|21| 55.5 | 41.3 | 48.4 | 48.4 | 43| 83| 16| 0|.........| 0| 0.00| 0.0| 30.50| 30.36|30.442|10.0| 9.4| 62| 25| NE| 0| 0| |
|22| 59.4 | 48.6 | 54.0 | 53.4 | 49| 85| 11| 0|.........| 0| 0.00| 0.0| 30.35| 30.16|30.240|13.4|13.0| 58| 34|ENE| 0| 0| |
|23| 55.9 | 50.4 | 53.2 | 52.4 | 51| 95| 12| 0|1........| 0| 0.01| 0.0| 30.18| 30.09|30.135|10.5| 9.9| 60| 24| E| 0| 0| |
|24| 76.7 | 54.8 | 65.8 | 62.7 | 62| 96| 0| 1|1........| 0| 0.19| 0.0| 30.06| 29.89|29.985| 7.2| 5.1|184| 31| S| 0| 0| |
|25| 80.0 | 54.6 | 67.3 | 66.7 | 63| 87| 0| 3|1........| 0| T | 0.0| 30.13| 29.99|30.050| 7.2| 7.2|204| 27|SSW| 0| 0| |
| | | | | | | | | | | | | | | | | | | | | | | | |
|26| 82.3 | 68.3 | 75.3*| 74.8 | 69| 83| 0| 10|.........| 0| 0.00| 0.0| 30.03| 29.88|29.927|10.9|10.6|220| 35| SW| 0| 0| |
|27| 74.8 | 56.9 | 65.9 | 65.1 | 53| 68| 0| 1|.........| 0| 0.12| 0.0| 30.20| 30.05|30.126| 6.8| 5.3|133| 24|SSE| 0| 0| |
|28| 82.9*| 59.0 | 70.9 | 69.5 | 64| 84| 0| 6|1.3......| 0| 0.13| 0.0| 30.00| 29.61|29.804| 9.8| 8.4|219| 35| NW| 0| 0| |
|29| 61.7 | 47.6 | 54.7 | 55.0 | 37| 52| 10| 0|.........| 0| 0.00| 0.0| 30.32| 29.89|30.147| 9.1| 6.0|309| 28|WNW| 0| 0| |
|30| 71.3 | 42.9 | 57.1 | 57.1 | 48| 72| 8| 0|.........| 0| 0.00| 0.0| 30.40| 30.25|30.319| 9.5| 9.3|166| 27| S| 0| 0| |
| | | | | | | | | | | | | | | | | | | | | | | | |
|31| 81.2 | 55.9 | 68.6 | 66.8 | 62| 87| 0| 4|1.3......| 0| 0.69| 0.0| 30.24| 29.83|30.037| 8.6| 8.4|195| 33|SSW| 0| 0| |
+--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+
| Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- |
+------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+
|1971.8|1350.3|------|------|---|----| 376| 28| Days | 2.60| 0.0| 30.53| 29.55|30.152| 8.2| 0.8| 61| 48| NE| 0| 0| ---- |
+------+------+------+------+---+----+----+----+------------|-1.38" or 65% of normal +----+----+---+---+---+---+---+------+
| Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg |
+------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+
| 63.6| 43.5| 53.5 | 53.0 | 43|72.2|----|----|≥.01 Inch 11|12.93| 3.4| 20 | 18 |------|----|----|---| 19 | 1+ | |
+ +3.4 +3.0 +3.2 +----+----+------------|+1.95" or 118% 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 |2751| 28|Thunder 2|Precipitation | Snow, Ice Plts | and Date |
+--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+
| ≥90°F | ≤32°F | ≤32°F | ≤0°F |----|----|Heavy Fog 1| 0.78| 18-19| 0.0 | - | 0 | - |
+--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+
| 0 | 0 | 5 | 0 |----|----| Clear 14 Partly Cloudy 11 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.
Data in columns 4B, 5, 6, 15, 16, 23 are updated continuously, there by achieving a "true" mean.
OBSERVER NOTES:
FROPA: 1st,12th,14th,16th,18th(WARM FROPA),18th,24th(WARM FROPA),27th,28th(WARMFROPA),28th
FROST: 3rd, 4th, 6th,7th,8th,9th
DAILY STATION RECORDS:
24th - WIND GUST 31 mph [previous 29mph 1990]
26th - TEMPERATURE Maximum low 68° [previous 61° 2015]
26th - TEMPERATURE Maximim 82° [previous 80° 2003]
MONTHLY AVERAGE MAXIMUM TEMP OF 63.6° WAS 3.4° ABOVE NORMAL.
MONTHLY AVERAGE MINIMUM TEMP OF 43.5° WAS 3.0° ABOVE NORMAL.
MONTHLY AVERAGE TEMP OF 53.5° WAS 3.2° ABOVE NORMAL.
MAXIMUM TEMP: 83° ON THE 28th
MINIMUM TEMP: 26° ON THE 8th
DAYS WITH TEMPERATURES:
MAXIMUM >= 90°: 0
MAXIMUM <= 32°: 0
MINIMUM <= 32°: 6
MINIMUM <= 0°: 0
HEATING DEGREE DAYS: 382.0
COOLING DEGREE DAYS: 27.0
DAYS WITH HEATING DEGREE DAYS: 24
DAYS WITH COOLING DEGREE DAYS: 7
PRECIP TOTAL OF 2.60" WAS 1.38" BELOW NORMAL ( 65% OF NORMAL).
GREATEST DAILY RAINFALL: 0.69" ON THE 31st
GREATEST 24-HOUR RAINFALL: 0.78" ON THE 18th & 19th
DAYS WITH MEASUREABLE PRECIP: 11 OR 35.48%
AVERAGE DAILY PRECIP: 0.08"
NORMAL DAILY PRECIP: 0.13"
DAYS WITH PRECIP >= 0.01" 11
DAYS WITH PRECIP >= 0.10" 8
DAYS WITH PRECIP >= 0.50" 3
DAYS WITH PRECIP >= 1.00" 0
DAYS WITH THUNDERSTORMS: 2
NUMBER OF THUNDERSTORMS: 2
DAYS WITH SNOW: 0
SNOWFALL TOTAL: 0.0"
CLOUDY DAYS: 6
PARTLY CLOUDY DAYS: 11
SUNNY/CLEAR DAYS: 14
DAYS WITH F/GF: 11
DAYS WITH DENSE FOG: 1
DAYS WITH FROST: 6
YEAR-TO-DATE
YEARLY AVERAGE MAXIMUM TEMP OF 53.5° WAS 0.3° BELOW NORMAL.
YEARLY AVERAGE MINIMUM TEMP OF 37.5° WAS 1.9° ABOVE NORMAL.
YEARLY AVERAGE TEMP OF 45.5° WAS 0.8° ABOVE NORMAL.
MAXIMUM TEMP: 83° ON MARCH 28th
MINIMUM TEMP: 26° ON JANUARY 29th and MARCH 8th
DAYS WITH TEMPERATURES:
MAXIMUM >= 90°: 0
MAXIMUM <= 32°: 0
MINIMUM <= 32°: 32
MINIMUM <= 0°: 0
HEATING DEGREE DAYS: 1785.0
COOLING DEGREE DAYS: 27.0
DAYS WITH HEATING DEGREE DAYS: 83
DAYS WITH COOLING DEGREE DAYS: 7
PRECIP TOTAL OF 12.93" WAS 1.96" ABOVE NORMAL (118% OF NORMAL).
GREATEST DAILY RAINFALL: 0.97" ON JANUARY 25th
GREATEST 24-HOUR RAINFALL: 1.61" ON JANUARY 25th - 26th
DAYS WITH MEASUREABLE PRECIP: 37 OF 90 OR 41.11%
AVERAGE DAILY PRECIP: 0.14"
NORMAL DAILY PRECIP: 0.12"
DAYS WITH PRECIP >= 0.01" 37
DAYS WITH PRECIP >= 0.10" 28
DAYS WITH PRECIP >= 0.50" 15
DAYS WITH PRECIP >= 1.00" 0
DAYS WITH THUNDERSTORMS: 4
NUMBER OF THUNDERSTORMS: 4
DAYS WITH SNOW: 6
SNOWFALL TOTAL: 3.4"
CLOUDY DAYS: 31
PARTLY CLOUDY DAYS: 23
SUNNY/CLEAR DAYS: 36
DAYS WITH F/GF: 38
DAYS WITH DENSE FOG: 1
DAYS WITH FROST: 28
OBSERVATIONS AT 3-HOUR INTERVALS
March 2021: 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 |
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAR 1 | MAR 2 | MAR 3 |
| | | |
|01| |29.83| 0.00| 66| 65| 95|22| 10| 20| |30.09| 0.00| 47| 34| 59|31| 11| 21| |30.14| 0.00| 34| 29| 81|18| 5| 12|
|04| |29.76| 0.00| 66| 64| 93|22| 7| 20| |30.15| 0.00| 43| 30| 60|00| 10| 19| |30.07| 0.00| 32| 29| 87|18| 0| 6|
|07| |29.74| 0.00| 65| 63| 91|20| 10| 22| |30.24| 0.00| 39| 28| 63|02| 12| 21| |30.06| 0.00| 30| 28| 92|00| 0| 0|
|10| |29.81| 0.04| 61| 59| 95|31| 11| 20| |30.29| 0.00| 41| 25| 54|02| 13| 22| |30.03| 0.00| 43| 36| 77|15| 5| 10|
|13| |29.75| 0.01| 61| 61| 99|22| 7| 18| |30.27| 0.00| 44| 23| 43|02| 11| 20| |29.95| 0.00| 53| 33| 45|09| 5| 12|
|16| |29.82| 0.00| 61| 59| 93|27| 11| 23| |30.24| 0.00| 45| 24| 43|02| 6| 15| |29.88| 0.00| 57| 32| 38|02| 6| 15|
|19| |29.94| 0.00| 52| 48| 86|33| 6| 15| |30.23| 0.00| 42| 28| 57|06| 4| 6| |29.91| 0.00| 54| 32| 44|24| 4| 7|
|22| |30.00| 0.00| 50| 42| 72|31| 7| 18| |30.19| 0.00| 36| 29| 75|18| 5| 10| |29.92| 0.00| 43| 34| 71|20| 4| 6|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAR 4 | MAR 5 | MAR 6 |
| | | |
|01| |29.90| 0.00| 38| 33| 82|00| 0| 0| |29.98| 0.00| 42| 27| 56|00| 10| 21| |30.11| 0.00| 31| 22| 69|24| 4| 6|
|04| |29.88| 0.00| 35| 32| 88|00| 0| 0| |30.00| 0.00| 36| 23| 58|00| 14| 26| |30.14| 0.00| 31| 22| 71|24| 4| 17|
|07| |29.90| 0.00| 34| 32| 91|00| 0| 0| |30.07| 0.00| 33| 20| 58|33| 7| 16| |30.17| 0.00| 35| 23| 61|04| 4| 6|
|10| |29.91| 0.00| 53| 36| 53|33| 12| 21| |30.09| 0.00| 37| 15| 40|33| 14| 25| |30.19| 0.00| 43| 22| 44|27| 6| 16|
|13| |29.88| 0.00| 57| 38| 50|02| 12| 21| |30.06| 0.00| 41| 14| 33|31| 15| 27| |30.14| 0.00| 48| 23| 38|29| 10| 22|
|16| |29.83| 0.00| 55| 38| 51|09| 7| 15| |30.02| 0.00| 44| 17| 33|33| 13| 20| |30.10| 0.00| 52| 23| 32|24| 11| 22|
|19| |29.87| 0.00| 51| 35| 53|04| 6| 13| |30.04| 0.00| 43| 19| 37|29| 6| 14| |30.14| 0.00| 47| 29| 49|31| 4| 14|
|22| |29.95| 0.00| 45| 36| 68|04| 13| 25| |30.09| 0.00| 35| 21| 55|29| 4| 6| |30.21| 0.00| 39| 33| 77|11| 0| 7|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAR 7 | MAR 8 | MAR 9 |
| | | |
|01| |30.23| 0.00| 39| 34| 82|09| 4| 12| |30.42| 0.00| 30| 24| 80|00| 0| 0| |30.47| 0.00| 35| 31| 87|00| 0| 0|
|04| |30.24| 0.00| 33| 30| 87|09| 0| 6| |30.43| 0.00| 27| 24| 87|00| 0| 0| |30.45| 0.00| 32| 29| 88|15| 4| 7|
|07| |30.30| 0.00| 34| 30| 88|04| 4| 7| |30.48| 0.00| 26| 24| 90|00| 0| 0| |30.47| 0.00| 32| 28| 87|15| 5| 10|
|10| |30.35| 0.00| 42| 30| 62|09| 11| 20| |30.51| 0.00| 42| 28| 57|27| 6| 14| |30.47| 0.00| 52| 35| 51|22| 4| 12|
|13| |30.32| 0.00| 44| 28| 52|00| 11| 20| |30.46| 0.00| 51| 25| 37|27| 7| 18| |30.40| 0.00| 66| 35| 31|22| 7| 17|
|16| |30.31| 0.00| 45| 27| 48|06| 11| 19| |30.43| 0.00| 54| 28| 36|33| 7| 18| |30.35| 0.00| 70| 37| 30|22| 6| 19|
|19| |30.36| 0.00| 41| 25| 53|06| 6| 13| |30.47| 0.00| 50| 32| 50|15| 4| 12| |30.37| 0.00| 63| 35| 35|24| 0| 5|
|22| |30.41| 0.00| 35| 26| 68|06| 0| 4| |30.48| 0.00| 40| 33| 77|15| 0| 6| |30.39| 0.00| 53| 34| 49|24| 4| 5|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAR 10 | MAR 11 | MAR 12 |
| | | |
|01| |30.40| 0.00| 50| 37| 62|18| 4| 6| |30.38| 0.00| 53| 39| 59|20| 6| 12| |30.25| 0.00| 60| 52| 75|20| 10| 21|
|04| |30.39| 0.00| 46| 38| 73|18| 0| 6| |30.38| 0.00| 48| 37| 64|20| 5| 10| |30.23| 0.00| 58| 50| 76|20| 7| 18|
|07| |30.42| 0.00| 41| 36| 81|00| 0| 0| |30.41| 0.00| 47| 38| 69|18| 5| 12| |30.22| 0.00| 57| 52| 81|22| 10| 23|
|10| |30.45| 0.00| 56| 42| 61|22| 5| 7| |30.41| 0.00| 62| 44| 53|22| 7| 20| |30.22| 0.00| 66| 55| 68|22| 11| 23|
|13| |30.41| 0.00| 72| 36| 27|18| 10| 20| |30.31| 0.00| 73| 45| 37|22| 12| 29| |30.16| 0.00| 76| 57| 53|27| 12| 24|
|16| |30.36| 0.00| 73| 42| 33|15| 13| 21| |30.24| 0.00| 75| 44| 33|20| 13| 30| |30.13| 0.00| 78| 57| 49|27| 11| 24|
|19| |30.39| 0.00| 65| 44| 46|15| 7| 13| |30.23| 0.00| 69| 47| 45|20| 7| 17| |30.12| 0.00| 72| 55| 56|29| 5| 11|
|22| |30.39| 0.00| 56| 41| 57|18| 7| 14| |30.27| 0.00| 62| 52| 70|20| 6| 13| |30.14| 0.00| 62| 54| 74|29| 4| 6|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAR 13 | MAR 14 | MAR 15 |
| | | |
|01| |30.16| 0.00| 62| 53| 72|33| 10| 17| |30.18| 0.00| 42| 37| 80|20| 5| 11| |30.16| 0.00| 55| 24| 30|00| 14| 30|
|04| |30.17| 0.00| 56| 49| 79|33| 4| 10| |30.14| 0.00| 41| 37| 84|22| 5| 10| |30.22| 0.00| 48| 20| 33|02| 13| 27|
|07| |30.25| 0.00| 56| 38| 51|00| 7| 15| |30.15| 0.00| 40| 37| 88|02| 0| 2| |30.30| 0.00| 43| 18| 36|02| 14| 26|
|10| |30.34| 0.00| 55| 33| 44|04| 14| 27| |30.16| 0.00| 48| 34| 58|02| 5| 16| |30.38| 0.00| 41| 24| 50|02| 14| 28|
|13| |30.32| 0.00| 54| 31| 40|04| 12| 21| |30.10| 0.00| 59| 33| 37|33| 10| 20| |30.38| 0.00| 43| 22| 43|02| 13| 23|
|16| |30.26| 0.00| 56| 32| 40|06| 6| 14| |30.00| 0.00| 65| 30| 27|27| 11| 24| |30.35| 0.00| 45| 24| 44|09| 11| 17|
|19| |30.25| 0.00| 53| 39| 59|15| 7| 15| |30.00| 0.00| 64| 29| 26|31| 10| 21| |30.33| 0.00| 42| 19| 39|06| 7| 17|
|22| |30.24| 0.00| 46| 37| 71|20| 7| 14| |30.07| 0.00| 59| 31| 35|31| 5| 14| |30.34| 0.00| 42| 23| 47|15| 5| 12|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAR 16 | MAR 17 | MAR 18 |
| | | |
|01| |30.34| 0.02| 37| 35| 90|27| 4| 6| |30.03| 0.01| 47| 47|100|00| 7| 16| |30.07| 0.01| 49| 49|100|11| 4| 7|
|04| |30.29| 0.04| 36| 35| 96|18| 5| 7| |30.03| 0.01| 46| 46|100|02| 7| 17| |30.01| 0.00| 49| 49|100|18| 4| 7|
|07| |30.26| 0.08| 37| 36| 97|15| 5| 12| |30.06| 0.00| 45| 45|100|00| 10| 17| |29.98| 0.00| 49| 49|100|15| 0| 7|
|10| |30.24| 0.01| 39| 39| 99|15| 6| 14| |30.10| 0.00| 46| 46|100|00| 10| 17| |29.90| 0.00| 51| 51|100|15| 5| 14|
|13| |30.20| 0.00| 42| 41| 97|15| 5| 13| |30.12| 0.00| 47| 47| 99|02| 11| 18| |29.83| 0.00| 59| 59|100|18| 7| 14|
|16| |30.10| 0.00| 44| 43| 98|09| 6| 15| |30.09| 0.00| 50| 49| 98|04| 7| 15| |29.68| 0.00| 71| 71|100|18| 7| 17|
|19| |30.08| 0.00| 45| 45| 99|09| 7| 15| |30.10| 0.00| 50| 49| 99|06| 6| 13| |29.59| 0.00| 72| 69| 91|20| 13| 26|
|22| |30.04| 0.00| 46| 45| 99|04| 7| 16| |30.11| 0.00| 49| 48| 99|06| 5| 11| |29.55| 0.00| 67| 65| 92|20| 10| 20|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Precipitation | 0.04 | 0.08 | 0.12 | 0.16 | 0.23 | 0.34 | 0.46 | 0.51 | 0.56 | 0.62 | 0.63 | 0.64 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Ended: Date | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
| Ended: Time | 1904 | 1909 | 1914 | 1920 | 1929 | 1944 | 2000 | 2000 | 1958 | 2000 | 2020 | 2040 |
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+
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
March 2021: 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 |
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAR 19 | MAR 20 | MAR 21 |
| | | |
|01| |29.61| 0.03| 57| 57| 98|02| 10| 14| |30.38| 0.00| 41| 31| 67|06| 12| 22| |30.48| 0.00| 41| 39| 90|04| 6| 14|
|04| |29.71| 0.00| 48| 48| 99|04| 14| 25| |30.43| 0.00| 40| 31| 68|04| 10| 19| |30.45| 0.00| 42| 40| 93|04| 6| 15|
|07| |29.81| 0.01| 45| 44| 95|04| 18| 35| |30.46| 0.00| 41| 33| 73|04| 11| 21| |30.46| 0.00| 43| 41| 94|04| 6| 12|
|10| |29.96| 0.02| 42| 41| 97|04| 19| 35| |30.52| 0.00| 44| 34| 69|04| 14| 27| |30.48| 0.00| 51| 43| 76|06| 12| 22|
|13| |30.13| 0.02| 39| 37| 94|04| 17| 30| |30.52| 0.00| 48| 37| 67|04| 16| 29| |30.47| 0.00| 55| 45| 69|04| 14| 25|
|16| |30.19| 0.00| 44| 27| 52|02| 18| 35| |30.50| 0.00| 47| 39| 71|04| 14| 24| |30.44| 0.00| 55| 45| 69|06| 14| 24|
|19| |30.27| 0.00| 42| 32| 66|09| 14| 24| |30.50| 0.00| 46| 38| 73|04| 11| 21| |30.43| 0.00| 51| 46| 81|09| 12| 22|
|22| |30.35| 0.00| 40| 31| 68|06| 11| 20| |30.49| 0.00| 42| 37| 80|06| 7| 17| |30.39| 0.00| 49| 46| 89|06| 10| 19|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAR 22 | MAR 23 | MAR 24 |
| | | |
|01| |30.35| 0.00| 49| 47| 91|06| 10| 19| |30.16| 0.00| 51| 48| 89|04| 11| 19| |30.06| 0.00| 55| 55|100|09| 6| 14|
|04| |30.28| 0.00| 50| 47| 91|04| 11| 17| |30.12| 0.00| 51| 49| 93|04| 10| 16| |30.00| 0.00| 56| 56|100|09| 4| 7|
|07| |30.27| 0.00| 50| 48| 94|04| 11| 18| |30.14| 0.00| 51| 50| 97|04| 12| 20| |29.99| 0.00| 59| 59|100|13| 4| 7|
|10| |30.28| 0.00| 54| 51| 89|04| 14| 26| |30.17| 0.00| 52| 52| 97|09| 12| 21| |30.00| 0.01| 64| 64|100|15| 6| 13|
|13| |30.26| 0.00| 58| 52| 82|06| 16| 30| |30.17| 0.00| 56| 53| 91|06| 13| 20| |29.93| 0.00| 73| 70| 90|18| 15| 30|
|16| |30.20| 0.00| 58| 51| 77|06| 17| 34| |30.12| 0.00| 53| 51| 94|06| 12| 21| |29.91| 0.05| 69| 67| 92|22| 11| 22|
|19| |30.19| 0.00| 55| 49| 80|04| 15| 27| |30.09| 0.00| 52| 51| 97|09| 12| 20| |29.96| 0.00| 63| 62| 96|22| 11| 19|
|22| |30.17| 0.00| 52| 46| 79|04| 13| 22| |30.11| 0.00| 54| 53| 99|09| 7| 15| |30.03| 0.00| 61| 60| 97|22| 7| 15|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAR 25 | MAR 26 | MAR 27 |
| | | |
|01| |30.04| 0.00| 57| 57| 98|00| 0| 0| |30.00| 0.00| 70| 66| 88|20| 11| 26| |30.06| 0.00| 69| 55| 61|04| 6| 17|
|04| |30.02| 0.00| 56| 55| 99|22| 0| 11| |29.93| 0.00| 69| 67| 93|20| 10| 19| |30.10| 0.00| 62| 51| 67|06| 6| 15|
|07| |30.07| 0.00| 55| 55|100|22| 0| 11| |29.88| 0.00| 69| 68| 95|20| 11| 24| |30.16| 0.00| 59| 49| 71|09| 4| 10|
|10| |30.13| 0.00| 64| 64|100|20| 5| 13| |29.90| 0.00| 76| 71| 85|22| 14| 34| |30.18| 0.00| 66| 50| 57|09| 6| 14|
|13| |30.09| 0.00| 76| 69| 79|20| 10| 18| |29.89| 0.00| 80| 72| 77|22| 14| 35| |30.19| 0.00| 72| 54| 54|15| 11| 19|
|16| |30.05| 0.00| 79| 65| 64|20| 11| 22| |29.88| 0.00| 82| 71| 69|22| 14| 30| |30.13| 0.00| 72| 53| 51|15| 11| 21|
|19| |30.02| 0.00| 76| 67| 72|20| 12| 26| |29.91| 0.00| 80| 69| 68|22| 11| 27| |30.16| 0.04| 65| 58| 80|11| 4| 11|
|22| |30.01| 0.00| 70| 67| 88|20| 13| 26| |30.00| 0.00| 74| 68| 82|22| 6| 15| |30.08| 0.00| 59| 58| 96|15| 7| 15|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAR 28 | MAR 29 | MAR 30 |
| | | |
|01| |30.00| 0.00| 59| 58| 98|20| 4| 6| |29.89| 0.00| 61| 48| 62|29| 11| 28| |30.32| 0.00| 47| 40| 76|18| 6| 14|
|04| |29.93| 0.00| 61| 60| 99|22| 0| 6| |29.98| 0.00| 53| 38| 56|31| 11| 24| |30.31| 0.00| 46| 41| 82|15| 6| 11|
|07| |29.87| 0.00| 62| 62|100|20| 6| 15| |30.09| 0.00| 48| 33| 55|29| 10| 19| |30.37| 0.00| 43| 40| 88|15| 4| 10|
|10| |29.87| 0.08| 66| 66|100|20| 7| 16| |30.18| 0.00| 52| 34| 50|33| 12| 23| |30.39| 0.00| 56| 47| 73|18| 10| 16|
|13| |29.79| 0.00| 79| 71| 77|22| 13| 28| |30.20| 0.00| 57| 33| 40|31| 12| 22| |30.35| 0.00| 68| 50| 53|15| 11| 22|
|16| |29.67| 0.00| 83| 69| 64|22| 14| 34| |30.19| 0.00| 60| 37| 41|33| 7| 19| |30.28| 0.00| 70| 51| 51|15| 14| 25|
|19| |29.64| 0.00| 75| 65| 71|20| 12| 26| |30.22| 0.00| 61| 36| 39|09| 6| 15| |30.27| 0.00| 67| 53| 62|15| 12| 21|
|22| |29.68| 0.00| 72| 63| 73|22| 11| 26| |30.28| 0.00| 52| 40| 64|18| 5| 11| |30.28| 0.00| 59| 54| 82|18| 10| 16|
+--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
| MAR 31 | | |
| | | |
|01| |30.24| 0.00| 58| 55| 90|18| 10| 16| | |
|04| |30.20| 0.00| 56| 54| 93|18| 5| 10| | |
|07| |30.18| 0.00| 56| 55| 96|18| 5| 10| | |
|10| |30.13| 0.00| 66| 63| 91|20| 7| 17| | |
|13| |30.04| 0.00| 79| 66| 66|20| 13| 27| | |
|16| |29.92| 0.00| 81| 68| 64|20| 13| 23| | |
|19| |29.87| 0.16| 71| 69| 93|20| 10| 24| | |
|22| |29.88| 0.00| 65| 65| 99|20| 7| 16| | |
+--+----+-----+-----+---+---+---+--+---+---+---------------------------------------+---------------------------------------+
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| |30.152| 49| 43| 80| 6.8| 01 | 0.6|
|04| |30.143| 47| 41| 82| 5.9| 04 | 1.5|
|07| |30.168| 46| 41| 83| 6.3| 04 | 1.8|
|10| |30.195| 52| 43| 73| 9.6| 03 | 2.0|
|13| |30.164| 59| 44| 61| 11.4| 01 | 0.8|
|16| |30.118| 61| 44| 58| 10.7| 14 | 1.0|
|19| |30.126| 57| 44| 65| 8.1| 13 | 2.1|
|22| |30.147| 52| 44| 76| 6.7| 17 | 1.7|
+--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
March 2021: 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| | | | | | | | | |0.04|0.04|0.01|0.01| | | | | | | | | | | |01
02| | | | | | | | | | | | | | | | | | | | | | | | |02
03| | | | | | | | | | | | | | | | | | | | | | | | |03
04| | | | | | | | | | | | | | | | | | | | | | | | |04
05| | | | | | | | | | | | | | | | | | | | | | | | |05
| | | | | | | | | | | | | | | | | | | | | | | | |
06| | | | | | | | | | | | | | | | | | | | | | | | |06
07| | | | | | | | | | | | | | | | | | | | | | | | |07
08| | | | | | | | | | | | | | | | | | | | | | | | |08
09| | | | | | | | | | | | | | | | | | | | | | | | |09
10| | | | | | | | | | | | | | | | | | | | | | | | |10
| | | | | | | | | | | | | | | | | | | | | | | | |
11| | | | | | | | | | | | | | | | | | | | | | | | |11
12| | | | | | | | | | | | | | | | | | | | | | | | |12
13| | | | | | | | | | | | | | | | | | | | | | | | |13
14| | | | | | | | | | | | | | | | | | | | | | | | |14
15| | | | | | | | | | | | | | | | | | | | | | |0.01|0.01|15
| | | | | | | | | | | | | | | | | | | | | | | | |
16|0.02|0.03|0.07|0.04|0.07|0.08|0.08|0.01|0.01|0.01|0.01|0.01| |0.03| | | |0.02| |0.02| | | | |16
17|0.01| | |0.01| | | | | | | | | | | | | | | | |0.01| | | |17
18|0.01| | | | | | | |0.01| | | | | | | | | | | | | |0.14| |18
19|0.03|0.26|0.22| | |0.01|0.01|0.01|0.01|0.02|0.02|0.03|0.02| | | | | | | | | | | |19
20| | | | | | | | | | | | | | | | | | | | | | | | |20
| | | | | | | | | | | | | | | | | | | | | | | | |
21| | | | | | | | | | | | | | | | | | | | | | | | |21
22| | | | | | | | | | | | | | | | | | | | | | | | |22
23| | | | | | | | | | | | | | | | | | | | | | |0.01| |23
24| | |0.13| | | | | | |0.01| | | | | |0.05| | | | | | | | |24
25| | | | | | | | | | | | | | | | | | | | | | | | |25
| | | | | | | | | | | | | | | | | | | | | | | | |
26| | | | | | | | | | | | | | | | | | | | | | | | |26
27| | | | | | | | | | | | | | | | | | |0.04|0.06| | |0.02| |27
28| | | | | | | | |0.04|0.08| | | | | | | | | | | | |0.01| |28
29| | | | | | | | | | | | | | | | | | | | | | | | |29
30| | | | | | | | | | | | | | | | | | | | | | | | |30
31| | | | | | | | | | | | | | | | | |0.01|0.16|0.45|0.03| |0.01|0.03|31
---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+---
Sum|0.07|0.29|0.42|0.05|0.07|0.09|0.09|0.02|0.07|0.16|0.07|0.05|0.03|0.03|0.00|0.05|0.00|0.03|0.20|0.53|0.04|0.00|0.20|0.04|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.)