LOCAL CLIMATOLOGICAL DATA Monthly Summary
April 2013
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| 72.1 | 51.2 | 61.7 | 61.1 | 46| 62| 3| 0|.........| 0| 0.01| 0.0| 29.96| 29.75|29.810| 5.3| 4.2|259| 26|WSW| 0| 0| | |02| 57.0 | 39.1 | 48.0 | 48.9 | 26| 43| 17| 0|.........| 0| 0.00| 0.0| 30.14| 29.99|30.077| 4.8| 2.8|320| 23|WSW| 0| 0| | |03| 55.9 | 37.7 | 46.8 | 46.7 | 25| 45| 18| 0|.........| 0| 0.00| 0.0| 30.37| 30.14|30.235| 3.3| 2.2|352| 21|WNW| 0| 0| | |04| 52.6 | 39.1 | 45.8 | 44.7 | 28| 53| 19| 0|1..4.....| 0| 0.43| T | 30.41| 29.98|30.290| 4.6| 4.4| 55| 27| NE| 0| 0| | |05| 59.5 | 42.8 | 51.2 | 49.4 | 41| 75| 13| 0|.........| 0| 0.44| 0.0| 29.99| 29.79|29.879| 8.0| 5.9|353| 28| NE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |06| 50.9 | 38.3 | 44.6*| 46.8 | 32| 58| 20| 0|.........| 0| 0.00| 0.0| 30.33| 30.01|30.234| 6.1| 6.1| 46| 29| NE| 0| 0| | |07| 71.3 | 36.5*| 53.9 | 53.9 | 41| 65| 11| 0|.........| 0| 0.00| 0.0| 30.32| 30.11|30.213| 2.3| 2.2|200| 25|SSW| 0| 0| | |08| 80.5 | 51.6 | 66.1 | 65.8 | 53| 66| 0| 2|.........| 0| 0.00| 0.0| 30.15| 30.04|30.099| 4.4| 4.3|206| 23| SW| 0| 0| | |09| 85.2 | 61.1 | 73.1 | 72.2 | 57| 60| 0| 8|.........| 0| 0.00| 0.0| 30.14| 30.02|30.082| 5.4| 5.2|210| 25|SSW| 0| 0| | |10| 89.4*| 64.4 | 76.9*| 75.9 | 59| 57| 0| 12|.........| 0| 0.00| 0.0| 30.05| 29.90|29.981| 6.3| 6.2|204| 26|SSW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |11| 85.1 | 61.7 | 73.4 | 73.6 | 59| 63| 0| 9|.........| 0| 0.00| 0.0| 29.96| 29.81|29.887| 7.2| 7.2|202| 29|SSW| 0| 0| | |12| 81.8 | 67.9 | 74.9 | 71.8 | 66| 82| 0| 10|.........| 0| 0.54| 0.0| 29.83| 29.61|29.717| 4.6| 4.6|204| 32|SSW| 0| 0| | |13| 69.1 | 51.8 | 60.4 | 60.7 | 47| 64| 4| 0|.........| 0| 0.00| 0.0| 29.98| 29.68|29.897| 5.8| 2.9| 63| 29| NW| 0| 0| | |14| 73.3 | 46.2 | 59.8 | 59.6 | 43| 59| 5| 0|1........| 0| 0.00| 0.0| 30.15| 29.99|30.076| 3.2| 0.8| 99| 22| NE| 0| 0| | |15| 69.2 | 57.3 | 63.3 | 62.1 | 52| 69| 2| 0|.........| 0| T | 0.0| 30.26| 30.11|30.171| 2.7| 2.3| 78| 22|ENE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |16| 76.7 | 55.8 | 66.3 | 65.9 | 56| 72| 0| 2|.........| 0| 0.00| 0.0| 30.31| 30.22|30.256| 2.6| 2.5|140| 21| SE| 0| 0| | |17| 84.6 | 56.4 | 70.5 | 69.5 | 60| 73| 0| 6|.........| 0| T | 0.0| 30.22| 30.11|30.174| 2.1| 1.3|197| 19|SSW| 0| 0| | |18| 82.9 | 61.3 | 72.1 | 71.4 | 59| 67| 0| 7|.........| 0| 0.00| 0.0| 30.24| 30.08|30.167| 1.7| 1.5|158| 24|SSE| 0| 0| | |19| 86.2 | 62.5 | 74.3 | 73.2 | 64| 75| 0| 10|.........| 0| 0.23| 0.0| 30.06| 29.76|29.899| 5.1| 5.1|204| 36|SSW| 0| 0| | |20| 65.6 | 47.5 | 56.5 | 57.4 | 46| 70| 8| 0|.........| 0| 0.56| 0.0| 30.29| 29.80|30.052| 4.9| 3.3|316| 29|WNW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |21| 53.9 | 43.0 | 48.5 | 49.3 | 35| 60| 16| 0|.........| 0| 0.00| 0.0| 30.55| 30.29|30.473| 8.9| 8.9| 45| 29| NE| 0| 0| | |22| 54.3 | 43.4 | 48.8 | 49.1 | 43| 79| 16| 0|1........| 0| 0.04| 0.0| 30.50| 30.28|30.389|11.0|10.4| 35| 35| NE| 0| 0| | |23| 57.2 | 43.8 | 50.5 | 51.5 | 47| 84| 14| 0|1........| 0| 0.01| 0.0| 30.26| 30.15|30.196| 8.2| 7.6| 27| 27| NE| 0| 0| | |24| 76.5 | 42.2 | 59.3 | 59.9 | 52| 76| 5| 0|1........| 0| 0.00| 0.0| 30.16| 29.94|30.069| 3.4| 3.4|203| 28|SSW| 0| 0| | |25| 63.6 | 45.7 | 54.7 | 58.2 | 42| 59| 10| 0|.........| 0| 0.00| 0.0| 30.31| 30.00|30.191| 6.9| 3.8| 32| 27| NE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |26| 66.7 | 40.5 | 53.6 | 54.6 | 39| 61| 11| 0|.........| 0| 0.00| 0.0| 30.43| 30.29|30.372| 2.3| 2.2| 45| 21| NE| 0| 0| | |27| 69.0 | 43.7 | 56.3 | 57.4 | 40| 55| 8| 0|.........| 0| 0.00| 0.0| 30.41| 30.31|30.363| 1.5| 1.1| 46| 18| NE| 0| 0| | |28| 70.4 | 42.5 | 56.5 | 57.6 | 46| 67| 8| 0|.........| 0| 0.03| 0.0| 30.31| 30.14|30.245| 1.6| 1.5|138| 17|SSE| 0| 0| | |29| 68.0 | 58.2 | 63.1 | 61.6 | 59| 91| 2| 0|1........| 0| 1.32| 0.0| 30.14| 30.00|30.063| 0.5| 0.5|143| 18| SE| 0| 0| | |30| 67.6 | 57.8 | 62.7 | 61.0 | 57| 88| 2| 0|1........| 0| 0.03| 0.0| 30.17| 30.03|30.095| 5.7| 5.2| 3| 27| NE| 0| 0| | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- | +------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+ |2096.1|1491.0|------|------|---|----| 212| 66| Days | 3.64| T | 30.55| 29.61|30.122| 4.7| 0.6| 37| 36|SSW| 0| 0| ---- | +------+------+------+------+---+----+----+----+------------|+0.26" or 108% of normal +------+----+----+---+---+---+---+---+------+ | Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg | +------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+ | 69.9| 49.6| 59.8 | 59.7 | 47|66.6|----|----|>.01 Inch 11|14.35| 2.7| 21 | 12 |------|----|----|---| 19 | 1+ | | + 0.0 +0.8 +0.4 +------+---+----+----+----+------------|+0.14" or 101% 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 |3322| 66|Thunder 0|Precipitation | Snow, Ice Plts | and Date | +--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+ | >90°F | <32°F | <32°F | <0°F |----|----|Heavy Fog 0| 1.35| 28-29| T | 4 | 0 | - | +--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+ | 0 | 0 | 0 | 0 |----|----| Clear 15 Partly Cloudy 9 Cloudy 6 | +--------+---------+--------+--------+----+----+------------------------------------------+ NOTES: Data in column 4A are (MAX+MIN) / 2, whereas data in columns 4B, 5, 6, 15, 16, 23 are means via continuous observations Units are: Temperature=°F, Wind=mph, Pressure=Inches Hg, Precipitation=inches. for 24 hours. Column 5: Dew point is calculated from temperature and humidity and is continuously averaged for 24 hours. Columns 7, 8: Degree Days heating base is 65°F, cooling base is 65°F. Data in columns 9, 10, 12 are entered manually by the station observer. Columns 17-18: Resultant wind is calculated by the vector sum of continuous wind observations. Column 23: 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:
    FROPA: 13th, 20th, 25th, 30th
STATION RECORDS:
10th - TEMPERATURE Maximum 89 [previous 86 1992]
11th - TEMPERATURE Maximum Low 62 [previously 61 1992]
12th - TEMPERATURE Maximum Low 68 [previously 62 2008]
19th - WIND GUST 36 mph [previous 35mph 1988]
21st - TEMPERATURE Minimum High 54 [previously 56 1981]
26th - TEMPERATURE Minimum 40 [previously 41 1981]
29th - RAINFALL 1.32" {previous 0.67" 1997] MONTHLY AVERAGE MAXIMUM TEMP OF 69.9 WAS NORMAL. MONTHLY AVERAGE MINIMUM TEMP OF 49.6 WAS 0.8 ABOVE NORMAL. MONTHLY AVERAGE TEMP OF 59.8 WAS 0.4 BELOW ABOVE. MAXIMUM TEMP: 89 ON THE 10th MINIMUM TEMP: 36 ON THE 7th DAYS WITH TEMPERATURES: MAXIMUM >= 90: 0 MAXIMUM <= 32: 0 MINIMUM <= 32: 0 MINIMUM <= 0: 0 HEATING DEGREE DAYS: 219.5 COOLING DEGREE DAYS: 63.0 DAYS WITH HEATING DEGREE DAYS: 21 DAYS WITH COOLING DEGREE DAYS: 9 PRECIP TOTAL OF 3.64" WAS 0.26" ABOVE NORMAL ( 108% OF NORMAL). GREATEST DAILY RAINFALL: 1.32" ON THE 29th GREATEST 24-HOUR RAINFALL: 1.35" ON THE 28th-29th DAYS WITH MEASUREABLE PRECIP: 11 OF 30 DAYS OR 36.67% AVERAGE DAILY PRECIP: 0.12" NORMAL DAILY PRECIP: 0.11" DAYS WITH PRECIP >= 0.01" 11 DAYS WITH PRECIP >= 0.10" 6 DAYS WITH PRECIP >= 0.50" 3 DAYS WITH PRECIP >= 1.00" 1 DAYS WITH THUNDERSTORMS: 0 NUMBER OF THUNDERSTORMS: 0 DAYS WITH SNOW: 0 SNOWFALL TOTAL: 0.0" SEASONAL SNOWFALL 2012-2013: 2.7" CLOUDY DAYS: 6 PARTLY CLOUDY DAYS: 9 SUNNY/CLEAR DAYS: 15 DAYS WITH F/GF: 7 DAYS WITH DENSE FOG: 0 DAYS WITH FROST: 0 YEAR-TO-DATE YEARLY AVERAGE MAXIMUM TEMP OF 56.6 WAS 1.1 BELOW NORMAL. YEARLY AVERAGE MINIMUM TEMP OF 38.1 WAS 0.6 BELOW NORMAL. YEARLY AVERAGE TEMP OF 47.3 WAS 0.9 BELOW NORMAL. MAXIMUM TEMP: 89 ON APRIL 10th MINIMUM TEMP: 18 ON JANUARY 23rd and FEBRUARY 18th DAYS WITH TEMPERATURES: MAXIMUM >= 90: 0 MAXIMUM <= 32: 1 MINIMUM <= 32: 37 MINIMUM <= 0: 0 HEATING DEGREE DAYS: 2187.0 COOLING DEGREE DAYS: 63.0 DAYS WITH HEATING DEGREE DAYS: 110 DAYS WITH COOLING DEGREE DAYS: 9 PRECIP TOTAL OF 14.35" WAS 0.14" ABOVE NORMAL (101% OF NORMAL). GREATEST DAILY RAINFALL: 2.38" ON FEBRUARY 8th GREATEST 24-HOUR RAINFALL: 2.54" ON FEBRUARY 7th-8th DAYS WITH MEASUREABLE PRECIP: 44 OF 120 OR 36.67% AVERAGE DAILY PRECIP: 0.12" NORMAL DAILY PRECIP: 0.12" DAYS WITH PRECIP >= 0.01" 44 DAYS WITH PRECIP >= 0.10" 28 DAYS WITH PRECIP >= 0.50" 10 DAYS WITH PRECIP >= 1.00" 4 DAYS WITH THUNDERSTORMS: 0 NUMBER OF THUNDERSTORMS: 0 DAYS WITH SNOW (calendar year 2013): 11 SNOWFALL TOTAL (calendar year 2013): 2.7" SEASONAL SNOW 2012-2013 (beginning November 2013): 2.7" CLOUDY DAYS: 34 PARTLY CLOUDY DAYS: 47 SUNNY/CLEAR DAYS: 39 DAYS WITH F/GF: 35 DAYS WITH DENSE FOG: 2 DAYS WITH FROST: 26
OBSERVATIONS AT 3-HOUR INTERVALS
April 2013: 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 1 | APR 2 | APR 3 | | | | | |01| |29.80| 0.00| 57| 54| 88|20| 5| 16| |29.99| 0.00| 49| 32| 52|33| 7| 21| |30.14| 0.00| 38| 32| 80|00| 0| 0| |04| |29.79| 0.00| 54| 51| 90|22| 0| 11| |30.02| 0.00| 46| 30| 55|33| 4| 14| |30.20| 0.00| 45| 25| 46|33| 4| 15| |07| |29.82| 0.01| 54| 52| 92|20| 0| 10| |30.09| 0.00| 43| 25| 50|04| 4| 14| |30.24| 0.00| 43| 23| 45|04| 0| 11| |10| |29.84| 0.00| 58| 52| 79|24| 5| 15| |30.13| 0.00| 47| 22| 37|04| 5| 14| |30.28| 0.00| 47| 22| 37|04| 6| 18| |13| |29.81| 0.00| 65| 42| 42|24| 6| 18| |30.09| 0.00| 53| 23| 30|24| 7| 20| |30.24| 0.00| 51| 18| 27|29| 7| 21| |16| |29.75| 0.00| 71| 44| 38|24| 7| 23| |30.04| 0.00| 56| 22| 26|24| 6| 18| |30.19| 0.00| 55| 21| 26|31| 6| 16| |19| |29.77| 0.00| 68| 39| 34|24| 7| 21| |30.07| 0.00| 54| 23| 30|33| 5| 17| |30.24| 0.00| 50| 28| 42|11| 0| 11| |22| |29.90| 0.00| 56| 39| 54|31| 11| 22| |30.13| 0.00| 42| 33| 69|11| 0| 7| |30.32| 0.00| 43| 29| 58|06| 0| 10| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 4 | APR 5 | APR 6 | | | | | |01| |30.37| 0.00| 44| 26| 48|04| 4| 16| |29.92| 0.05| 44| 41| 91|04| 14| 26| |30.01| 0.00| 42| 38| 87|31| 0| 7| |04| |30.35| 0.00| 42| 20| 42|04| 4| 14| |29.80| 0.12| 44| 42| 92|00| 13| 25| |30.09| 0.00| 50| 30| 46|04| 6| 19| |07| |30.39| 0.00| 39| 26| 59|04| 0| 10| |29.84| 0.02| 45| 43| 92|00| 12| 24| |30.18| 0.00| 47| 34| 60|04| 7| 18| |10| |30.40| 0.00| 45| 27| 48|06| 4| 14| |29.90| 0.00| 46| 43| 88|00| 13| 24| |30.28| 0.00| 49| 27| 43|04| 12| 27| |13| |30.32| 0.00| 50| 25| 37|06| 6| 17| |29.89| 0.00| 52| 45| 77|31| 5| 15| |30.31| 0.00| 50| 34| 54|04| 11| 24| |16| |30.24| 0.00| 50| 28| 42|06| 5| 15| |29.87| 0.00| 57| 39| 51|29| 5| 16| |30.29| 0.00| 50| 31| 48|04| 10| 19| |19| |30.20| 0.03| 43| 34| 69|06| 0| 11| |29.90| 0.00| 58| 36| 44|24| 4| 11| |30.30| 0.00| 47| 30| 51|06| 4| 12| |22| |30.08| 0.10| 42| 38| 85|06| 7| 17| |29.97| 0.00| 46| 39| 75|00| 0| 0| |30.33| 0.00| 39| 32| 76|11| 0| 12| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 7 | APR 8 | APR 9 | | | | | |01| |30.32| 0.00| 40| 35| 83|11| 0| 6| |30.13| 0.00| 55| 50| 81|20| 4| 15| |30.10| 0.00| 63| 56| 77|20| 4| 22| |04| |30.26| 0.00| 38| 35| 90|00| 0| 0| |30.11| 0.00| 53| 48| 85|20| 4| 15| |30.09| 0.00| 64| 55| 75|20| 7| 22| |07| |30.28| 0.00| 37| 34| 91|00| 0| 0| |30.13| 0.00| 52| 49| 90|20| 4| 11| |30.12| 0.00| 61| 57| 85|20| 5| 20| |10| |30.29| 0.00| 54| 46| 75|13| 0| 10| |30.14| 0.00| 66| 56| 71|20| 7| 21| |30.14| 0.00| 71| 60| 67|20| 7| 21| |13| |30.22| 0.00| 66| 43| 44|13| 0| 15| |30.11| 0.00| 77| 58| 52|24| 5| 22| |30.10| 0.00| 80| 58| 48|24| 5| 15| |16| |30.12| 0.00| 71| 41| 34|20| 6| 25| |30.05| 0.00| 80| 54| 41|20| 4| 18| |30.04| 0.00| 85| 56| 37|20| 5| 21| |19| |30.12| 0.00| 67| 42| 41|20| 6| 21| |30.05| 0.00| 76| 52| 43|20| 4| 22| |30.02| 0.00| 81| 55| 41|20| 6| 20| |22| |30.13| 0.00| 58| 47| 66|20| 4| 16| |30.10| 0.00| 67| 57| 70|20| 4| 14| |30.06| 0.00| 72| 56| 58|20| 0| 12| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 10 | APR 11 | APR 12 | | | | | |01| |30.04| 0.00| 68| 59| 71|20| 6| 20| |29.93| 0.00| 69| 60| 71|20| 10| 25| |29.83| 0.00| 70| 63| 79|20| 4| 17| |04| |30.01| 0.00| 67| 56| 69|20| 7| 22| |29.91| 0.00| 65| 56| 72|20| 7| 21| |29.79| 0.00| 68| 63| 85|20| 4| 19| |07| |30.04| 0.00| 64| 57| 76|20| 7| 23| |29.94| 0.00| 62| 57| 83|20| 6| 17| |29.77| 0.00| 70| 64| 82|20| 6| 23| |10| |30.05| 0.00| 74| 61| 64|20| 6| 22| |29.95| 0.00| 73| 61| 67|20| 10| 22| |29.78| 0.06| 69| 66| 89|20| 5| 25| |13| |29.99| 0.00| 85| 61| 45|20| 5| 17| |29.91| 0.00| 82| 64| 54|20| 11| 25| |29.72| 0.00| 78| 69| 74|20| 6| 32| |16| |29.92| 0.00| 89| 60| 37|20| 6| 21| |29.83| 0.00| 85| 61| 44|20| 10| 29| |29.65| 0.36| 75| 70| 84|20| 6| 22| |19| |29.91| 0.00| 84| 58| 42|20| 7| 22| |29.82| 0.00| 79| 58| 48|20| 6| 21| |29.61| 0.00| 74| 67| 80|20| 4| 17| |22| |29.91| 0.00| 76| 58| 54|20| 6| 20| |29.83| 0.00| 72| 63| 72|18| 4| 17| |29.64| 0.00| 69| 65| 89|20| 6| 22| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 13 | APR 14 | APR 15 | | | | | |01| |29.68| 0.00| 68| 65| 90|20| 6| 22| |29.99| 0.00| 51| 46| 82|20| 4| 18| |30.11| 0.00| 58| 46| 63|11| 0| 11| |04| |29.82| 0.00| 58| 52| 83|04| 12| 27| |30.00| 0.00| 49| 46| 89|20| 4| 12| |30.16| 0.00| 59| 48| 68|06| 0| 5| |07| |29.89| 0.00| 54| 46| 73|04| 10| 21| |30.05| 0.00| 46| 44| 92|33| 0| 4| |30.16| 0.00| 60| 49| 66|04| 4| 15| |10| |29.95| 0.00| 60| 43| 54|04| 6| 16| |30.10| 0.00| 62| 49| 62|24| 4| 11| |30.16| 0.00| 61| 54| 76|04| 4| 15| |13| |29.94| 0.00| 65| 42| 43|04| 4| 12| |30.10| 0.00| 70| 38| 31|00| 5| 14| |30.17| 0.00| 68| 55| 64|09| 4| 16| |16| |29.91| 0.00| 65| 46| 49|13| 4| 17| |30.08| 0.00| 71| 39| 31|04| 6| 22| |30.16| 0.00| 65| 54| 69|09| 5| 19| |19| |29.92| 0.00| 60| 45| 57|15| 5| 24| |30.10| 0.00| 66| 37| 35|13| 4| 14| |30.19| 0.00| 65| 55| 68|11| 5| 20| |22| |29.97| 0.00| 53| 44| 71|15| 0| 15| |30.15| 0.00| 58| 44| 58|15| 0| 14| |30.25| 0.00| 60| 54| 80|11| 0| 12| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 16 | APR 17 | APR 18 | | | | | |01| |30.25| 0.00| 58| 53| 81|13| 4| 12| |30.22| 0.00| 59| 56| 88|22| 0| 7| |30.20| 0.00| 68| 58| 70|13| 0| 10| |04| |30.25| 0.00| 57| 52| 85|13| 0| 7| |30.20| 0.00| 57| 55| 91|20| 0| 11| |30.19| 0.00| 64| 59| 83|15| 0| 6| |07| |30.27| 0.00| 58| 55| 87|11| 0| 7| |30.20| 0.00| 58| 57| 94|20| 0| 13| |30.21| 0.00| 62| 60| 92|15| 0| 7| |10| |30.30| 0.00| 70| 58| 65|13| 6| 21| |30.20| 0.00| 71| 62| 73|20| 6| 19| |30.24| 0.00| 73| 62| 67|13| 0| 14| |13| |30.28| 0.00| 76| 59| 56|13| 4| 19| |30.16| 0.00| 81| 63| 55|20| 5| 17| |30.18| 0.00| 81| 61| 51|15| 4| 19| |16| |30.24| 0.00| 75| 58| 55|13| 4| 16| |30.11| 0.00| 84| 61| 46|22| 0| 14| |30.14| 0.00| 82| 58| 44|20| 4| 19| |19| |30.22| 0.00| 69| 57| 66|13| 4| 17| |30.13| 0.00| 75| 65| 72|20| 0| 10| |30.10| 0.00| 75| 58| 55|13| 4| 23| |22| |30.24| 0.00| 62| 56| 82|15| 0| 16| |30.18| 0.00| 71| 60| 70|15| 0| 13| |30.12| 0.00| 66| 57| 74|13| 0| 12| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Precipitation | 0.04 | 0.07 | 0.10 | 0.13 | 0.19 | 0.28 | 0.36 | 0.36 | 0.41 | 0.49 | 0.56 | 0.63 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Date | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 29 | 29 | 29 | 29 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Time | 1505 | 1510 | 1515 | 1520 | 1530 | 1545 | 1558 | 1558 | 1050 | 1100 | 1129 | 1200 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ 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
April 2013: 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 19 | APR 20 | APR 21 | | | | | |01| |30.06| 0.00| 63| 59| 87|13| 0| 6| |29.80| 0.03| 65| 62| 91|20| 4| 15| |30.29| 0.00| 46| 42| 88|00| 0| 0| |04| |29.99| 0.00| 63| 60| 90|13| 0| 12| |29.81| 0.11| 65| 62| 92|20| 6| 21| |30.35| 0.00| 45| 42| 89|04| 4| 19| |07| |29.98| 0.00| 65| 63| 92|11| 0| 7| |29.98| 0.04| 51| 48| 90|33| 6| 21| |30.45| 0.00| 49| 30| 48|04| 12| 26| |10| |29.96| 0.00| 75| 67| 76|22| 4| 21| |30.07| 0.04| 56| 47| 72|00| 7| 17| |30.52| 0.00| 53| 30| 42|04| 14| 29| |13| |29.89| 0.00| 83| 65| 55|20| 11| 32| |30.10| 0.00| 59| 39| 47|31| 7| 18| |30.54| 0.00| 54| 37| 53|04| 11| 24| |16| |29.79| 0.00| 86| 67| 54|20| 6| 28| |30.12| 0.00| 59| 36| 41|31| 5| 15| |30.51| 0.00| 52| 36| 54|04| 10| 24| |19| |29.76| 0.00| 79| 67| 67|20| 7| 33| |30.16| 0.00| 57| 41| 56|33| 0| 7| |30.51| 0.00| 48| 35| 59|04| 10| 21| |22| |29.82| 0.00| 74| 65| 72|20| 10| 36| |30.27| 0.00| 51| 44| 77|13| 0| 5| |30.55| 0.00| 45| 35| 66|04| 6| 20| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 22 | APR 23 | APR 24 | | | | | |01| |30.50| 0.00| 44| 34| 68|04| 7| 18| |30.26| 0.00| 51| 46| 85|00| 7| 24| |30.16| 0.00| 43| 40| 91|00| 0| 0| |04| |30.45| 0.00| 45| 38| 78|04| 6| 17| |30.21| 0.00| 51| 48| 91|04| 11| 23| |30.14| 0.00| 42| 40| 93|00| 0| 0| |07| |30.43| 0.00| 47| 41| 81|04| 10| 21| |30.20| 0.00| 50| 48| 91|04| 11| 25| |30.16| 0.00| 48| 46| 94|20| 0| 19| |10| |30.42| 0.00| 53| 45| 72|04| 14| 25| |30.23| 0.00| 50| 47| 90|04| 11| 22| |30.14| 0.00| 57| 54| 87|20| 5| 18| |13| |30.40| 0.01| 51| 47| 84|04| 12| 27| |30.20| 0.00| 53| 48| 83|00| 11| 22| |30.05| 0.00| 72| 57| 60|20| 5| 25| |16| |30.33| 0.00| 51| 47| 87|04| 13| 30| |30.18| 0.00| 56| 48| 74|00| 7| 17| |29.99| 0.00| 76| 57| 51|20| 7| 28| |19| |30.31| 0.01| 49| 46| 89|00| 13| 29| |30.15| 0.00| 55| 47| 75|04| 5| 16| |29.94| 0.00| 72| 54| 53|20| 5| 22| |22| |30.31| 0.00| 51| 46| 83|00| 12| 28| |30.18| 0.00| 47| 43| 88|00| 0| 4| |30.00| 0.00| 66| 58| 76|20| 4| 18| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 25 | APR 26 | APR 27 | | | | | |01| |30.01| 0.00| 63| 57| 83|20| 6| 23| |30.30| 0.00| 45| 41| 87|18| 0| 0| |30.39| 0.00| 50| 41| 71|00| 0| 0| |04| |30.01| 0.00| 61| 57| 86|20| 5| 16| |30.31| 0.00| 41| 38| 90|00| 0| 0| |30.37| 0.00| 47| 42| 81|00| 0| 0| |07| |30.16| 0.00| 58| 42| 55|04| 12| 27| |30.37| 0.00| 42| 40| 93|00| 0| 0| |30.39| 0.00| 44| 41| 88|00| 0| 0| |10| |30.25| 0.00| 56| 39| 53|04| 14| 24| |30.41| 0.00| 59| 44| 56|04| 5| 14| |30.41| 0.00| 62| 36| 37|31| 0| 12| |13| |30.25| 0.00| 58| 39| 50|04| 7| 21| |30.40| 0.00| 64| 36| 35|04| 7| 21| |30.37| 0.00| 67| 39| 35|31| 5| 15| |16| |30.24| 0.00| 61| 34| 37|04| 10| 18| |30.39| 0.00| 67| 37| 34|04| 6| 16| |30.33| 0.00| 68| 36| 30|04| 5| 18| |19| |30.23| 0.00| 59| 32| 36|06| 4| 12| |30.37| 0.00| 62| 40| 43|11| 0| 14| |30.33| 0.00| 63| 39| 40|11| 0| 12| |22| |30.30| 0.00| 50| 42| 75|13| 3| 10| |30.42| 0.00| 54| 38| 55|09| 0| 5| |30.33| 0.00| 54| 39| 56|13| 0| 6| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | APR 28 | APR 29 | APR 30 | | | | | |01| |30.31| 0.00| 49| 38| 66|06| 0| 4| |30.14| 0.00| 59| 56| 91|15| 0| 10| |30.03| 0.00| 61| 59| 94|00| 0| 0| |04| |30.27| 0.00| 45| 40| 83|00| 0| 0| |30.10| 0.09| 59| 57| 92|13| 0| 12| |30.03| 0.00| 59| 57| 93|33| 0| 7| |07| |30.27| 0.00| 45| 42| 89|00| 0| 0| |30.11| 0.07| 59| 57| 93|13| 0| 12| |30.08| 0.00| 59| 57| 95|33| 4| 12| |10| |30.29| 0.00| 62| 48| 60|11| 0| 7| |30.09| 0.23| 59| 57| 93|15| 0| 12| |30.12| 0.00| 59| 57| 92|04| 5| 13| |13| |30.27| 0.00| 70| 48| 46|13| 4| 16| |30.05| 0.03| 62| 60| 93|11| 0| 11| |30.11| 0.00| 65| 58| 78|33| 7| 21| |16| |30.23| 0.00| 67| 48| 50|13| 4| 14| |30.01| 0.02| 66| 63| 90|20| 0| 11| |30.09| 0.00| 66| 58| 76|00| 11| 21| |19| |30.18| 0.00| 63| 49| 60|11| 4| 12| |30.00| 0.00| 67| 63| 87|13| 0| 7| |30.12| 0.01| 60| 57| 90|33| 7| 19| |22| |30.17| 0.02| 58| 53| 83|09| 0| 6| |30.02| 0.00| 61| 58| 91|00| 0| 0| |30.16| 0.01| 58| 56| 93|04| 11| 27| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | +------------------------------------------+---------------------------------------+---------------------------------------+
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| |30.114| 55| 49| 81| 3.9| 08 | 0.6| |04| |30.107| 54| 48| 81| 4.3| 04 | 1.4| |07| |30.142| 53| 47| 82| 4.6| 04 | 2.7| |10| |30.167| 60| 49| 69| 6.6| 05 | 2.8| |13| |30.140| 65| 48| 57| 6.7| 02 | 1.4| |16| |30.100| 67| 48| 53| 6.5| 05 | 1.5| |19| |30.097| 64| 48| 59| 4.9| 09 | 0.8| |22| |30.131| 57| 49| 74| 3.7| 05 | 0.9| +--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
April 2013: 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| | | | | | | |0.01| | | | | | | | | | | | | | | | |01 02| | | | | | | | | | | | | | | | | | | | | | | | |02 03| | | | | | | | | | | | | | | | | | | | | | | | |03 04| | | | | | | | | | | | | | | | | | | |0.03|0.01|0.01|0.10|0.28|04 05| |0.05|0.07|0.14|0.12|0.01|0.03|0.02| | | | | | | | | | | | | | | | |05 | | | | | | | | | | | | | | | | | | | | | | | | | 06| | | | | | | | | | | | | | | | | | | | | | | | |06 07| | | | | | | | | | | | | | | | | | | | | | | | |07 08| | | | | | | | | | | | | | | | | | | | | | | | |08 09| | | | | | | | | | | | | | | | | | | | | | | | |09 10| | | | | | | | | | | | | | | | | | | | | | | | |10 | | | | | | | | | | | | | | | | | | | | | | | | | 11| | | | | | | | | | | | | | | | | | | | | | | | |11 12| | | | | | | | | |0.02|0.06|0.10| | | | |0.36| | | | | | | |12 13| | | | | | | | | | | | | | | | | | | | | | | | |13 14| | | | | | | | | | | | | | | | | | | | | | | | |14 15| | | | | | | | | | | | | | | | | | | | | | | | |15 | | | | | | | | | | | | | | | | | | | | | | | | | 16| | | | | | | | | | | | | | | | | | | | | | | | |16 17| | | | | | | | | | | | | | | | | | | | | | | | |17 18| | | | | | | | | | | | | | | | | | | | | | | | |18 19| | | | | | | | | | | | | | | | | | | | | | | |0.23|19 20| |0.03|0.03| |0.11|0.17|0.06|0.04|0.04| |0.04| | | | |0.04| | | | | | | | |20 | | | | | | | | | | | | | | | | | | | | | | | | | 21| | | | | | | | | | | | | | | | | | | | | | | | |21 22| | | | | | | | | | | | | |0.01| | | |0.01|0.01|0.01| | | | |22 23| | | | | | |0.01| | | | | | | | | | | | | | | | | |23 24| | | | | | | | | | | | | | | | | | | | | | | | |24 25| | | | | | | | | | | | | | | | | | | | | | | | |25 | | | | | | | | | | | | | | | | | | | | | | | | | 26| | | | | | | | | | | | | | | | | | | | | | | | |26 27| | | | | | | | | | | | | | | | | | | | | | | | |27 28| | | | | | | | | | | | | | | | | | | | | | |0.02|0.01|28 29| | |0.02|0.07|0.09|0.11|0.04|0.07|0.09|0.10|0.23|0.25|0.14|0.03|0.01|0.05|0.02| | | | | | | |29 30| | | | | | | | | | | | | | | | | | | |0.01| |0.01|0.01| |30 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- Sum| |0.08|0.12|0.21|0.32|0.29|0.14|0.14|0.13|0.12|0.33|0.35|0.14|0.04|0.01|0.09|0.38|0.01|0.01|0.05|0.01|0.02|0.13|0.52|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.)