LOCAL CLIMATOLOGICAL DATA Monthly Summary
March 2011
Station: Portsmouth, Virginia - KPWR Latitude: 36° 48' 04" N Longitude: 76° 19' 37" W Elevation (ground): 20 feet Time Zone: Eastern +--+-------------------------------+----+---------+---------+--+-----------+--------------------+-----------------------------+------+ | | Temperature | |Deg. Days|Precip Ty| | Precip | Pressure | Wind | Sun | | +------+------+------+------+---+ Hu-+----+----+1 fog | S+-----+-----+ Adj. to Sea Level +----+----+---+-------+-------+------+ | | M | M | A | | |mid-| H | C |2 hvy fog| n| | Ice +------+------+------+ Avg| Res|Res| Peak | Minute| Mean | | | a | i | v | | D | ity| e | o |3 thunder| o|Water| plts| | | | | | +---+---+---+---+ | | | x | n | e | | e | | a | o |4 ice plt| w| | | | | | S | S | | S | | S | | I | | D| i | i | r | M | w | M | t | l |5 hail | | E | S | | | M | p | p | | p | | p | | n | | a| m | m | a | e | | e | i | i |6 glaze | C| q | n | M | M | e | e | e | D | e | D | e | D | d | | t| u | u | g | a | P | a | n | n |7 duststm| v| u | o | a | i | a | e | e | i | e | i | e | i | e | | 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 | x | | | | | | | | | | |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| 49.9 | 31.4 | 40.7 | 41.5 | 33| 72| 24| 0|.........| 0| 0.04| 0.0| 30.37| 29.91|30.229| 9.3| 8.5| 18| 33| NE| 0| 0| | |02| 61.6 | 26.6 | 44.1 | 43.9 | 32| 67| 20| 0|.........| 0| 0.00| 0.0| 30.35| 30.13|30.240| 4.1| 2.6|223| 29| NE| 0| 0| | |03| 47.2 | 30.1 | 38.7 | 36.7 | 23| 58| 26| 0|.........| 0| 0.00| 0.0| 30.66| 30.36|30.573| 9.5| 9.4| 48| 29| NE| 0| 0| | |04| 52.5 | 31.1 | 41.8 | 42.0 | 35| 76| 23| 0|.........| 0| 0.00| 0.0| 30.66| 30.50|30.590| 3.4| 3.0| 70| 20| NE| 0| 0| | |05| 67.4 | 44.1 | 55.8 | 55.5 | 49| 80| 9| 0|.........| 0| T | 0.0| 30.48| 30.15|30.338| 2.7| 2.7|149| 18| SE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |06| 63.4 | 44.0 | 53.7 | 59.1 | 57| 94| 11| 0|.........| 0| 1.20| 0.0| 30.14| 29.56|29.852| 5.1| 4.3|176| 33|SSW| 0| 0| | |07| 51.0 | 39.5 | 45.3 | 44.1 | 34| 69| 19| 0|.........| 0| 0.00| 0.0| 30.33| 29.80|30.087| 9.4| 7.4|327| 33|WSW| 0| 0| | |08| 47.9 | 38.1 | 43.0 | 42.7 | 34| 70| 22| 0|.........| 0| 0.00| 0.0| 30.50| 30.32|30.446| 6.6| 6.5| 53| 22| NE| 0| 0| | |09| 59.2 | 39.8 | 49.5 | 48.5 | 44| 85| 15| 0|.........| 0| 0.00| 0.0| 30.47| 30.22|30.379| 4.2| 3.1| 86| 20|ESE| 0| 0| | |10| 65.4 | 47.1 | 56.3 | 55.4 | 53| 93| 9| 0|1........| 0| 0.99| 0.0| 30.19| 29.74|29.923| 4.5| 3.6|162| 45|WSW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |11| 52.6 | 39.3 | 45.9 | 45.6 | 38| 76| 19| 0|.........| 0| 0.01| 0.0| 30.04| 29.77|29.895| 7.6| 7.4|245| 26|WSW| 0| 0| | |12| 64.9 | 31.7 | 48.3 | 48.9 | 37| 64| 16| 0|.........| 0| 0.00| 0.0| 30.12| 29.95|30.032| 5.7| 5.3|213| 24|SSW| 0| 0| | |13| 72.7 | 48.4 | 60.5 | 58.7 | 43| 59| 4| 0|.........| 0| 0.00| 0.0| 30.24| 29.98|30.072| 6.5| 3.1|231| 25| NE| 0| 0| | |14| 49.8 | 42.7 | 46.3 | 46.5 | 35| 65| 18| 0|.........| 0| 0.00| 0.0| 30.41| 30.25|30.326| 8.9| 8.6| 41| 24| N| 0| 0| | |15| 54.4 | 41.3 | 47.8 | 47.5 | 40| 74| 17| 0|.........| 0| 0.00| 0.0| 30.44| 30.21|30.367| 4.4| 4.3| 69| 19|ENE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |16| 60.8 | 50.6 | 55.7 | 55.3 | 51| 86| 9| 0|.........| 0| 0.06| 0.0| 30.17| 30.08|30.119| 4.3| 1.8|342| 21| SE| 0| 0| | |17| 63.6 | 47.0 | 55.3 | 54.0 | 44| 70| 9| 0|.........| 0| 0.00| 0.0| 30.33| 30.16|30.238| 4.1| 2.8|360| 19| N| 0| 0| | |18| 81.5*| 46.4 | 64.0*| 63.3 | 52| 68| 1| 0|.........| 0| 0.00| 0.0| 30.18| 29.94|30.042| 5.9| 5.5|229| 23|WSW| 0| 0| | |19| 69.8 | 43.9 | 56.9 | 60.0 | 46| 61| 8| 0|.........| 0| 0.00| 0.0| 30.43| 29.98|30.202| 7.5| 5.9| 32| 30| NE| 0| 0| | |20| 51.1 | 39.5 | 45.3 | 46.1 | 36| 69| 19| 0|.........| 0| 0.02| 0.0| 30.62| 30.45|30.543| 5.6| 5.5| 47| 24| NE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |21| 76.0 | 44.4 | 60.2 | 58.6 | 52| 80| 5| 0|..3......| 0| 0.25| 0.0| 30.46| 29.93|30.161| 6.4| 5.6|208| 30|SSW| 0| 0| | |22| 61.5 | 48.9 | 55.2 | 56.9 | 51| 83| 9| 0|.........| 0| 0.01| 0.0| 29.99| 29.88|29.928| 4.8| 2.2| 51| 23| N| 0| 0| | |23| 69.8 | 49.1 | 59.5 | 57.1 | 50| 78| 5| 0|.........| 0| 0.21| 0.0| 29.93| 29.46|29.689| 3.4| 1.2|108| 29|WNW| 0| 0| | |24| 57.1 | 44.3 | 50.7 | 49.3 | 46| 89| 14| 0|.........| 0| 0.18| 0.0| 29.97| 29.46|29.680| 6.2| 5.7| 37| 22| NE| 0| 0| | |25| 54.1 | 38.9 | 46.5 | 44.8 | 34| 65| 18| 0|.........| 0| 0.00| 0.0| 30.08| 29.93|30.000| 5.2| 3.2| 31| 20| NE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |26| 45.2 | 37.5 | 41.3 | 42.2 | 34| 73| 23| 0|.........| 0| 0.02| 0.0| 30.08| 29.96|30.021| 3.9| 3.9| 52| 25| NE| 0| 0| | |27| 40.1 | 32.6 | 36.3*| 37.0 | 33| 85| 28| 0|1..4.....| 0| 0.30| T | 30.08| 29.92|29.989| 6.9| 5.4| 39| 25| NE| 0| 0| | |28| 45.8 | 30.2 | 38.0 | 37.8 | 30| 76| 27| 0|1........| 0| T | 0.0| 30.12| 30.03|30.072| 2.2| 1.8| 20| 17|NNW| 0| 0| | |29| 54.7 | 26.5*| 40.6 | 40.5 | 29| 67| 24| 0|.........| 0| 0.00| 0.0| 30.25| 30.12|30.179| 2.8| 2.0| 21| 18|ENE| 0| 0| | |30| 45.4 | 36.2 | 40.8 | 42.4 | 39| 86| 24| 0|1........| 0| 0.69| 0.0| 30.21| 29.80|30.046| 2.6| 2.3| 69| 22|ENE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |31| 46.6 | 43.5 | 45.0 | 45.1 | 44| 96| 19| 0|1........| 0| 0.27| 0.0| 29.79| 29.57|29.707| 6.3| 5.8| 21| 23| NE| 0| 0| | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- | +------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+ |1783.0|1234.7|------|------|---|----| 494| 0| Days | 4.25| T | 30.66| 29.46|30.128| 5.5| 1.8| 38| 45|WSW| 0| 0| ---- | +------+------+------+------+---+----+----+----+------------|+0.23" or 106% of normal +------+----+----+---+---+---+---+---+------+ | Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg | +------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+ | 57.5| 39.7| 48.6 | 48.6 | 41|75.4|----|----|>.01 Inch 14|10.05| 19.0| 3 | 23 |------|----|----|---| 10 | 1+ | | + -2.4 -0.5 -1.5 ------+---+----+----+----+------------|-0.80" or 93% 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 |3462| 0|Thunder 1|Precipitation | Snow, Ice Plts | and Date | +--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+ | >90°F | <32°F | <32°F | <0°F |----|----|Heavy Fog 0| 1.20| 6 | T | 27 | 0 | - | +--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+ | 0 | 0 | 7 | 0 |----|----| Clear 12 Partly Cloudy 14 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: Sunshine index 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:
    COLD FROPA:  2nd, 6th, 11th, 13th, 16th, 19th, 22nd, 23rd, 26th, 28th, 29th
WARM FROPA: 23rd
FROST: 1st, 2nd, 4th, 28th, 29th
STATION RECORDS:
10th - WIND GUST 45 mph [previous 39mph 1989]
18th - TEMPERATURE TIED Maximum 82 [previous 1989]
21st - TEMPERATURE TIED Maximum 76 [previous 1978]
26th - TEMPERATURE TIED Minimum Maximum 45 [previous 2001]
27th - TEMPERATURE Minimum Maximum 40 [previous 1999]
30th - TEMPERATURE Minimum Maximum 45 [previous 48 in 2008] MONTHLY AVERAGE MAXIMUM TEMP OF 57.5 WAS 2.4 BELOW NORMAL. MONTHLY AVERAGE MINIMUM TEMP OF 39.7 WAS 0.5 BELOW NORMAL. MONTHLY AVERAGE TEMP OF 48.6 WAS 1.5 BELOW NORMAL. MAXIMUM TEMP: 82 ON THE 18TH MINIMUM TEMP: 26 ON THE 29TH DAYS WITH TEMPERATURES: MAXIMUM >= 90: 0 MAXIMUM <= 32: 0 MINIMUM <= 32: 7 MINIMUM <= 0: 0 HEATING DEGREE DAYS: 507.0 COOLING DEGREE DAYS: 0.0 DAYS WITH HEATING DEGREE DAYS: 31 DAYS WITH COOLING DEGREE DAYS: 0 PRECIP TOTAL OF 4.25" WAS 0.23" ABOVE NORMAL (106% OF NORMAL). GREATEST DAILY RAINFALL: 1.20" ON THE 6TH GREATEST 24-HOUR RAINFALL: 1.20 ON THE 6TH DAYS WITH MEASUREABLE PRECIP: 14 OR 45.16% AVERAGE DAILY PRECIP: 0.14" NORMAL DAILY PRECIP: 0.13" DAYS WITH PRECIP >= 0.01" 14 DAYS WITH PRECIP >= 0.10" 8 DAYS WITH PRECIP >= 0.50" 3 DAYS WITH PRECIP >= 1.00" 1 DAYS WITH THUNDERSTORMS: 1 NUMBER OF THUNDERSTORMS: 2 DAYS WITH SNOW: 0 SNOWFALL TOTAL: 0.0" SEASONAL SNOWFALL 2010-2011: 19.0" CLOUDY DAYS: 5 PARTLY CLOUDY DAYS: 14 SUNNY/CLEAR DAYS: 12 DAYS WITH F/GF: 5 DAYS WITH DENSE FOG: 0 DAYS WITH FROST: 5 YEAR-TO-DATE YEARLY AVERAGE MAXIMUM TEMP OF 52.2 WAS 1.3 BELOW NORMAL. YEARLY AVERAGE MINIMUM TEMP OF 34.2 WAS 1.0 BELOW NORMAL. YEARLY AVERAGE TEMP OF 43.2 WAS 1.2 BELOW NORMAL. MAXIMUM TEMP: 82 ON MARCH 18TH MINIMUM TEMP: 15 ON JANUARY 23RD DAYS WITH TEMPERATURES: MAXIMUM >= 90: 0 MAXIMUM <= 32: 1 MINIMUM <= 32: 41 MINIMUM <= 0: 0 HEATING DEGREE DAYS: 1961.0 COOLING DEGREE DAYS: 0.0 DAYS WITH HEATING DEGREE DAYS: 90 DAYS WITH COOLING DEGREE DAYS: 0 PRECIP TOTAL OF 10.05" WAS 0.80" BELOW NORMAL ( 93% OF NORMAL ). GREATEST DAILY RAINFALL: 1.20" ON MARCH 6TH GREATEST 24-HOUR RAINFALL: 1.64" ON JANUARY 17TH-18TH DAYS WITH MEASUREABLE PRECIP: 36 OF 90 OR 40.00% AVERAGE DAILY PRECIP: 0.11" NORMAL DAILY PRECIP: 0.12" DAYS WITH PRECIP >= 0.01" 36 DAYS WITH PRECIP >= 0.10" 18 DAYS WITH PRECIP >= 0.50" 8 DAYS WITH PRECIP >= 1.00" 3 DAYS WITH THUNDERSTORMS: 2 NUMBER OF THUNDERSTORMS: 3 DAYS WITH SNOW (calendar year 2011): 5 SNOWFALL TOTAL (calendar year 2011): 3.6" SEASONAL SNOW 2010-2011 (beginning December 2010): 19.0" CLOUDY DAYS: 20 PARTLY CLOUDY DAYS: 40 SUNNY/CLEAR DAYS: 30 DAYS WITH F/GF: 23 DAYS WITH DENSE FOG: 0 DAYS WITH FROST: 22
OBSERVATIONS AT 3-HOUR INTERVALS
March 2011: Portsmouth, Virginia - KPWR
+--+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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| |29.91| 0.03| 49| 47| 95|00| 14| 31| |30.35| 0.00| 30| 27| 88|00| 0| 0| |30.36| 0.00| 45| 28| 51|04| 12| 22| |04| |30.02| 0.00| 45| 41| 84|00| 13| 25| |30.30| 0.00| 27| 25| 92|00| 0| 0| |30.44| 0.00| 40| 25| 54|04| 12| 27| |07| |30.16| 0.00| 41| 32| 70|00| 12| 27| |30.28| 0.00| 27| 25| 93|00| 0| 0| |30.53| 0.00| 35| 22| 58|04| 11| 23| |10| |30.29| 0.00| 40| 28| 62|04| 15| 33| |30.27| 0.00| 44| 37| 74|20| 6| 15| |30.64| 0.00| 36| 20| 51|04| 13| 26| |13| |30.32| 0.00| 42| 29| 61|00| 14| 25| |30.18| 0.00| 59| 37| 43|20| 10| 21| |30.62| 0.00| 37| 21| 53|04| 10| 21| |16| |30.32| 0.00| 43| 29| 58|04| 6| 17| |30.13| 0.00| 62| 38| 41|24| 10| 23| |30.61| 0.00| 36| 22| 57|04| 11| 24| |19| |30.36| 0.00| 39| 30| 70|04| 0| 10| |30.18| 0.00| 52| 35| 53|18| 0| 5| |30.65| 0.00| 33| 24| 69|06| 5| 17| |22| |30.36| 0.00| 33| 29| 84|00| 0| 0| |30.24| 0.00| 47| 35| 64|18| 0| 20| |30.66| 0.00| 32| 24| 71|06| 0| 7| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAR 4 | MAR 5 | MAR 6 | | | | | |01| |30.65| 0.00| 33| 25| 73|04| 4| 10| |30.48| 0.00| 47| 44| 91|13| 0| 5| |30.14| 0.00| 58| 53| 83|15| 0| 10| |04| |30.62| 0.00| 32| 27| 83|06| 0| 5| |30.43| 0.00| 44| 43| 94|00| 0| 0| |30.04| 0.00| 59| 54| 83|15| 4| 14| |07| |30.64| 0.00| 36| 31| 83|04| 4| 11| |30.42| 0.00| 45| 44| 95|13| 0| 5| |30.02| 0.02| 56| 55| 96|15| 4| 18| |10| |30.66| 0.00| 44| 35| 70|06| 7| 17| |30.40| 0.00| 60| 51| 73|13| 4| 12| |29.96| 0.03| 61| 59| 95|15| 5| 18| |13| |30.59| 0.00| 50| 39| 64|06| 5| 17| |30.33| 0.00| 67| 54| 62|15| 5| 16| |29.81| 0.05| 62| 61| 96|15| 5| 19| |16| |30.53| 0.00| 52| 40| 64|15| 4| 14| |30.27| 0.00| 65| 54| 68|13| 5| 18| |29.70| 0.70| 62| 62| 97|18| 6| 21| |19| |30.54| 0.00| 45| 40| 83|13| 0| 6| |30.23| 0.00| 58| 52| 79|13| 5| 14| |29.58| 0.00| 61| 60| 98|15| 4| 14| |22| |30.51| 0.00| 43| 40| 92|13| 0| 4| |30.19| 0.00| 56| 50| 83|15| 4| 14| |29.66| 0.01| 53| 50| 91|20| 12| 33| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAR 7 | MAR 8 | MAR 9 | | | | | |01| |29.80| 0.00| 43| 40| 89|29| 11| 25| |30.32| 0.00| 43| 32| 66|04| 5| 12| |30.47| 0.00| 40| 38| 91|04| 4| 12| |04| |29.89| 0.00| 41| 36| 85|29| 7| 21| |30.36| 0.00| 40| 28| 63|04| 4| 11| |30.45| 0.00| 41| 39| 93|04| 4| 12| |07| |29.99| 0.00| 40| 32| 75|31| 13| 26| |30.42| 0.00| 39| 30| 69|04| 4| 15| |30.46| 0.00| 43| 41| 93|04| 5| 12| |10| |30.10| 0.00| 42| 33| 70|31| 14| 26| |30.48| 0.00| 44| 34| 68|04| 10| 19| |30.44| 0.00| 52| 45| 76|06| 5| 17| |13| |30.12| 0.00| 48| 35| 61|31| 11| 22| |30.47| 0.00| 47| 39| 73|04| 11| 21| |30.39| 0.00| 59| 49| 69|15| 5| 17| |16| |30.13| 0.00| 51| 35| 54|00| 10| 19| |30.48| 0.00| 46| 36| 69|06| 10| 22| |30.35| 0.00| 55| 49| 79|11| 4| 15| |19| |30.24| 0.00| 45| 34| 65|04| 5| 12| |30.48| 0.00| 42| 34| 72|06| 4| 11| |30.27| 0.00| 52| 49| 88|13| 4| 16| |22| |30.30| 0.00| 44| 32| 62|04| 5| 16| |30.50| 0.00| 40| 37| 89|04| 4| 11| |30.26| 0.00| 48| 44| 88|15| 0| 6| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAR 10 | MAR 11 | MAR 12 | | | | | |01| |30.19| 0.00| 47| 44| 90|13| 0| 6| |29.77| 0.00| 50| 50| 98|18| 4| 11| |30.05| 0.00| 38| 31| 78|24| 4| 12| |04| |30.08| 0.00| 49| 44| 85|13| 4| 14| |29.79| 0.00| 44| 43| 95|24| 6| 19| |30.06| 0.00| 33| 29| 87|24| 0| 5| |07| |30.01| 0.07| 54| 52| 94|13| 5| 16| |29.86| 0.00| 40| 38| 90|24| 6| 20| |30.12| 0.00| 35| 31| 86|24| 4| 12| |10| |30.00| 0.23| 57| 56| 97|13| 0| 6| |29.90| 0.00| 46| 38| 75|24| 10| 23| |30.10| 0.00| 48| 36| 63|24| 6| 16| |13| |29.88| 0.00| 65| 63| 92|15| 6| 20| |29.88| 0.00| 53| 39| 59|24| 11| 26| |30.02| 0.00| 61| 41| 48|20| 7| 18| |16| |29.77| 0.01| 63| 61| 94|15| 7| 23| |29.90| 0.00| 49| 36| 61|24| 10| 24| |29.95| 0.00| 65| 43| 46|20| 11| 23| |19| |29.74| 0.02| 60| 59| 95|18| 5| 18| |29.97| 0.00| 46| 34| 63|24| 7| 21| |29.95| 0.00| 58| 41| 53|20| 6| 16| |22| |29.78| 0.13| 51| 50| 97|24| 0| 5| |30.03| 0.00| 40| 33| 76|22| 4| 7| |29.99| 0.00| 53| 39| 58|20| 5| 18| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAR 13 | MAR 14 | MAR 15 | | | | | |01| |29.99| 0.00| 52| 42| 69|20| 6| 16| |30.25| 0.00| 48| 40| 74|04| 11| 20| |30.41| 0.00| 45| 34| 66|04| 4| 14| |04| |29.98| 0.00| 51| 41| 70|20| 6| 15| |30.26| 0.00| 45| 35| 70|04| 10| 21| |30.38| 0.00| 42| 34| 74|06| 0| 7| |07| |30.04| 0.00| 51| 42| 70|20| 6| 14| |30.31| 0.00| 43| 33| 68|04| 7| 20| |30.40| 0.00| 43| 37| 80|06| 5| 15| |10| |30.09| 0.00| 57| 45| 66|20| 5| 12| |30.35| 0.00| 46| 35| 64|04| 11| 21| |30.44| 0.00| 48| 38| 67|06| 6| 19| |13| |30.09| 0.00| 69| 44| 40|24| 10| 24| |30.35| 0.00| 48| 34| 58|00| 11| 24| |30.41| 0.00| 53| 42| 68|06| 6| 19| |16| |30.05| 0.00| 72| 44| 36|24| 10| 20| |30.31| 0.00| 49| 35| 58|04| 10| 19| |30.34| 0.00| 50| 42| 72|11| 4| 16| |19| |30.09| 0.00| 65| 46| 51|06| 4| 11| |30.34| 0.00| 48| 34| 59|04| 7| 18| |30.30| 0.00| 49| 43| 78|09| 4| 12| |22| |30.19| 0.00| 51| 43| 74|04| 5| 14| |30.40| 0.00| 46| 36| 70|06| 5| 14| |30.27| 0.00| 51| 47| 85|06| 4| 11| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAR 16 | MAR 17 | MAR 18 | | | | | |01| |30.17| 0.00| 54| 51| 90|13| 5| 19| |30.16| 0.00| 51| 47| 87|00| 0| 0| |30.18| 0.00| 48| 45| 90|20| 4| 12| |04| |30.10| 0.01| 56| 55| 96|13| 4| 12| |30.19| 0.00| 52| 47| 85|31| 4| 11| |30.13| 0.00| 47| 45| 91|20| 4| 10| |07| |30.10| 0.00| 51| 50| 96|04| 4| 10| |30.25| 0.00| 47| 41| 78|33| 4| 12| |30.10| 0.00| 47| 44| 89|20| 4| 10| |10| |30.14| 0.00| 52| 51| 97|31| 4| 7| |30.31| 0.00| 53| 43| 69|00| 10| 18| |30.09| 0.00| 60| 51| 71|20| 7| 18| |13| |30.12| 0.00| 59| 53| 82|29| 5| 13| |30.31| 0.00| 57| 43| 60|04| 7| 17| |30.02| 0.00| 76| 56| 50|24| 10| 21| |16| |30.08| 0.00| 59| 51| 74|31| 6| 16| |30.23| 0.00| 62| 44| 51|31| 5| 14| |29.95| 0.00| 81| 58| 46|24| 10| 19| |19| |30.11| 0.00| 58| 49| 74|00| 4| 11| |30.20| 0.00| 62| 46| 57|24| 0| 12| |29.96| 0.00| 78| 58| 51|24| 4| 16| |22| |30.16| 0.00| 54| 48| 80|04| 0| 7| |30.23| 0.00| 50| 43| 76|13| 0| 11| |29.97| 0.00| 68| 56| 64|20| 4| 10| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Precipitation | 0.06 | 0.12 | 0.18 | 0.24 | 0.36 | 0.53 | 0.71 | 0.74 | 0.77 | 0.81 | 0.86 | 0.90 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Date | 06 | 06 | 06 | 06 | 06 | 06 | 06 | 06 | 06 | 06 | 06 | 06 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Time | 1504 | 1509 | 1514 | 1519 | 1529 | 1544 | 1600 | 1618 | 1636 | 1700 | 1730 | 1754 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ 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 2011: Portsmouth, Virginia - KPWR
+--+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+----+-----+-----+---+---+---+----------+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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| |29.98| 0.00| 66| 54| 67|20| 4| 7| |30.45| 0.00| 42| 36| 78|00| 0| 0| |30.46| 0.00| 45| 42| 90|13| 0| 12| |04| |29.99| 0.00| 64| 57| 78|31| 0| 6| |30.48| 0.00| 45| 39| 80|04| 4| 17| |30.38| 0.00| 46| 43| 87|15| 0| 11| |07| |30.08| 0.00| 64| 55| 71|33| 10| 20| |30.56| 0.00| 44| 37| 78|04| 10| 21| |30.32| 0.00| 47| 44| 90|13| 0| 12| |10| |30.22| 0.00| 60| 44| 54|04| 12| 25| |30.62| 0.00| 47| 34| 60|04| 10| 19| |30.23| 0.03| 51| 49| 93|20| 6| 17| |13| |30.27| 0.00| 60| 43| 52|04| 13| 26| |30.61| 0.00| 49| 35| 60|06| 7| 18| |30.11| 0.00| 67| 58| 73|20| 13| 28| |16| |30.27| 0.00| 59| 40| 49|04| 11| 20| |30.54| 0.00| 50| 32| 50|04| 6| 18| |30.00| 0.00| 75| 62| 64|20| 12| 25| |19| |30.32| 0.00| 57| 39| 52|04| 6| 17| |30.54| 0.00| 48| 35| 60|04| 6| 16| |29.95| 0.00| 71| 59| 68|20| 7| 18| |22| |30.40| 0.00| 48| 37| 67|06| 0| 6| |30.52| 0.00| 45| 41| 84|11| 0| 10| |29.95| 0.00| 68| 59| 74|20| 7| 18| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAR 22 | MAR 23 | MAR 24 | | | | | |01| |29.93| 0.01| 59| 58| 96|20| 5| 14| |29.93| 0.00| 50| 45| 83|13| 4| 14| |29.47| 0.15| 54| 52| 94|31| 5| 17| |04| |29.88| 0.00| 58| 57| 96|20| 4| 7| |29.84| 0.00| 51| 45| 82|06| 4| 14| |29.46| 0.00| 53| 52| 97|24| 0| 10| |07| |29.90| 0.00| 56| 55| 96|20| 0| 5| |29.83| 0.00| 50| 43| 77|06| 5| 15| |29.52| 0.01| 50| 49| 96|00| 6| 17| |10| |29.96| 0.00| 61| 54| 77|00| 10| 23| |29.80| 0.00| 53| 46| 78|06| 4| 14| |29.62| 0.00| 49| 47| 93|04| 6| 16| |13| |29.97| 0.00| 59| 51| 74|04| 6| 14| |29.68| 0.00| 61| 52| 72|15| 4| 12| |29.73| 0.00| 48| 46| 92|04| 7| 20| |16| |29.91| 0.00| 59| 49| 69|04| 10| 18| |29.59| 0.00| 66| 56| 71|20| 4| 12| |29.78| 0.00| 49| 43| 81|04| 12| 22| |19| |29.92| 0.00| 54| 46| 72|06| 4| 12| |29.46| 0.00| 67| 58| 73|11| 0| 7| |29.86| 0.00| 45| 40| 81|04| 11| 20| |22| |29.97| 0.00| 49| 44| 80|09| 0| 12| |29.52| 0.04| 59| 57| 91|29| 7| 29| |29.93| 0.00| 45| 39| 80|04| 7| 22| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAR 25 | MAR 26 | MAR 27 | | | | | |01| |29.98| 0.00| 45| 37| 73|00| 7| 19| |29.97| 0.00| 44| 38| 80|15| 0| 7| |29.97| 0.01| 39| 36| 87|13| 0| 11| |04| |30.00| 0.00| 43| 34| 71|00| 6| 15| |29.97| 0.00| 44| 38| 80|06| 0| 5| |29.93| 0.04| 37| 34| 89|06| 5| 16| |07| |30.04| 0.00| 39| 30| 68|00| 6| 17| |30.05| 0.00| 40| 38| 90|04| 10| 25| |29.96| 0.08| 36| 34| 92|04| 11| 25| |10| |30.08| 0.00| 42| 30| 62|00| 7| 16| |30.08| 0.00| 39| 34| 80|04| 6| 18| |30.00| 0.03| 35| 33| 92|04| 11| 21| |13| |30.02| 0.00| 46| 29| 51|04| 5| 15| |30.05| 0.00| 43| 30| 61|06| 6| 16| |30.01| 0.00| 36| 33| 91|04| 11| 21| |16| |29.94| 0.00| 52| 34| 51|06| 4| 11| |30.01| 0.00| 43| 31| 61|04| 5| 12| |29.99| 0.00| 39| 31| 75|04| 11| 20| |19| |29.97| 0.00| 46| 36| 67|13| 0| 11| |30.00| 0.00| 43| 31| 63|06| 4| 12| |30.01| 0.00| 40| 32| 75|29| 5| 15| |22| |29.97| 0.00| 44| 38| 80|13| 4| 15| |30.02| 0.00| 41| 33| 73|18| 0| 6| |30.06| 0.00| 35| 31| 85|24| 4| 11| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAR 28 | MAR 29 | MAR 30 | | | | | |01| |30.08| 0.00| 31| 29| 91|24| 0| 4| |30.12| 0.00| 31| 27| 88|00| 0| 0| |30.21| 0.00| 38| 33| 82|00| 0| 0| |04| |30.05| 0.00| 31| 29| 93|24| 0| 6| |30.12| 0.00| 28| 26| 92|00| 0| 0| |30.18| 0.00| 40| 36| 87|00| 0| 0| |07| |30.03| 0.00| 33| 32| 95|02| 0| 10| |30.17| 0.00| 27| 25| 93|33| 0| 4| |30.15| 0.00| 44| 34| 69|06| 4| 11| |10| |30.09| 0.00| 41| 37| 86|31| 4| 11| |30.24| 0.00| 43| 30| 60|00| 6| 16| |30.18| 0.01| 44| 38| 77|13| 0| 7| |13| |30.10| 0.00| 41| 29| 62|06| 6| 17| |30.22| 0.00| 48| 28| 46|06| 6| 18| |30.08| 0.14| 42| 40| 93|06| 0| 10| |16| |30.04| 0.00| 44| 31| 59|06| 4| 12| |30.16| 0.00| 54| 31| 41|06| 6| 16| |29.95| 0.10| 43| 42| 96|13| 4| 11| |19| |30.05| 0.00| 45| 28| 51|00| 5| 14| |30.16| 0.00| 52| 36| 55|06| 4| 10| |29.85| 0.00| 43| 42| 93|06| 7| 22| |22| |30.11| 0.00| 35| 29| 78|00| 0| 0| |30.22| 0.00| 41| 32| 72|00| 0| 0| |29.81| 0.00| 45| 43| 93|06| 6| 18| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | MAR 31 | | | | | | | |01| |29.79| 0.00| 45| 44| 96|04| 7| 23| | | |04| |29.72| 0.00| 45| 44| 96|04| 7| 20| | | |07| |29.75| 0.01| 45| 44| 97|00| 6| 15| | | |10| |29.76| 0.00| 45| 44| 96|00| 7| 18| | | |13| |29.74| 0.00| 46| 44| 95|00| 7| 17| | | |16| |29.65| 0.00| 46| 45| 95|04| 7| 19| | | |19| |29.64| 0.04| 45| 44| 95|31| 4| 11| | | |22| |29.63| 0.04| 44| 43| 96|04| 4| 11| | | +--+----+-----+-----+---+---+---+--+---+---+---------------------------------------+---------------------------------------+
WEATHER NOTES SUMMARY BY HOURS
+--+-----------------------------+---------+ Wind Direction: Directions are those from which the wind is blowing, | | Averages | | indicated in tens of degrees from true North: i.e., 09 for East, 18 for | +----+------+---+---+---+-----+Resultant| South, 27 for West, and 00 or 36 for North. | | | | | | | | | Wind Speed: The observed one-minute average speed in miles-per-hour. | | | | T | | | | Wind | Wind Gust: The maximum instantaneous wind speed for the ten minute-period | | | | e | | % | W +----+----+ preceding the observation. | | | | m | D | | i | D | | Rainfall Rate: The instantaneous rainfall rate at time of observation, | | S | P | p | e | H | n | i | | calculated by timing consecutive 0.01" pulses from the electronic rain | | u | r | e | w | u | d | r | | gauge and interpolating this rate for one hour. | | n | e | r | | m | | e | | | | s | s | a | P | i | S | c | S | | H| h | s | t | o | d | p | t | p | | o| i | u | u | i | i | e | i | e | | u| n | r | r | n | t | e | o | e | | r| e | e | e | t | y | d | n | d | +--+----+------+---+---+---+-----+----+----+ |01| |30.108| 45| 41| 84| 4.1| 03 | 1.5| |04| |30.090| 44| 40| 85| 3.8| 04 | 1.6| |07| |30.120| 44| 39| 85| 5.4| 02 | 3.1| |10| |30.152| 48| 41| 76| 7.3| 03 | 3.6| |13| |30.120| 53| 42| 68| 7.7| 03 | 2.1| |16| |30.067| 54| 42| 66| 7.5| 06 | 2.0| |19| |30.067| 51| 42| 71| 4.2| 06 | 1.4| |22| |30.093| 47| 41| 80| 3.0| 11 | 0.6| +--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
March 2011: Portsmouth, Virginia - KPWR
---+-----------------------------------------------------------+-----------------------------------------------------------+--- | | | 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| | | | | | | | | | | | | | | | | | | | | |01 02| | | | | | | | | | | | | | | | | | | | | | | | |02 03| | | | | | | | | | | | | | | | | | | | | | | | |03 04| | | | | | | | | | | | | | | | | | | | | | | | |04 05| | | | | | | | | | | | | | | | | | | | | | | | |05 | | | | | | | | | | | | | | | | | | | | | | | | | 06| | | | | |0.05|0.02|0.02|0.01| |0.03|0.08|0.01|0.05| |0.02|0.70|0.10|0.10| | | |0.01| |06 07| | | | | | | | | | | | | | | | | | | | | | | | |07 08| | | | | | | | | | | | | | | | | | | | | | | | |08 09| | | | | | | | | | | | | | | | | | | | | | | | |09 10| | | | | | | |0.07|0.12|0.08|0.23|0.04| | | | |0.01|0.01|0.05|0.02|0.12|0.09|0.13|0.02|10 | | | | | | | | | | | | | | | | | | | | | | | | | 11| | |0.01| | | | | | | | | | | | | | | | | | | | | |11 12| | | | | | | | | | | | | | | | | | | | | | | | |12 13| | | | | | | | | | | | | | | | | | | | | | | | |13 14| | | | | | | | | | | | | | | | | | | | | | | | |14 15| | | | | | | | | | | | | | | | | | | | | | | | |15 | | | | | | | | | | | | | | | | | | | | | | | | | 16| | | |0.03|0.01| | | |0.01|0.01| | | | | | | | | | | | | | |16 17| | | | | | | | | | | | | | | | | | | | | | | | |17 18| | | | | | | | | | | | | | | | | | | | | | | | |18 19| | | | | | | | | | | | | | | | | | | | | | | | |19 20| | | | | | | | | | | | | | | | | | | | | | | |0.02|20 | | | | | | | | | | | | | | | | | | | | | | | | | 21| | | | | | | | | |0.02|0.03| | | | | | | | | | | | |0.20|21 22| |0.01| | | | | | | | | | | | | | | | | | | | | | |22 23| | | | | | | | | | | | | | | | | | | | | | |0.04|0.17|23 24| |0.15|0.01| | | | |0.01| | | | | | |0.01| | | | | | | | | |24 25| | | | | | | | | | | | | | | | | | | | | | | | |25 | | | | | | | | | | | | | | | | | | | | | | | | | 26| | | | | | | | |0.01| | | | | | | | | | | | | | |0.01|26 27| |0.01|0.01|0.02|0.04|0.03|0.01|0.08|0.03|0.03|0.03| |0.01| | | | | | | | | | | |27 28| | | | | | | | | | | | | | | | | | | | | | | | |28 29| | | | | | | | | | | | | | | | | | | | | | | | |29 30| | | | | | | | | | |0.01|0.03|0.09|0.14|0.17|0.13|0.10|0.02| | | | | | |30 31| | | | | | | |0.01| | | | |0.02| |0.03|0.01| | | |0.04|0.01|0.02|0.04|0.09|31 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- Sum| |0.20|0.04|0.05|0.05|0.08|0.03|0.19|0.18|0.14|0.33|0.15|0.13|0.19|0.21|0.16|0.81|0.13|0.15|0.06|0.13|0.11|0.22|0.51|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.)