LOCAL CLIMATOLOGICAL DATA Monthly Summary
December 2012
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| 60.0 | 33.6 | 46.8 | 45.4 | 38| 78| 18| 0|1........| 0| 0.00| 0.0| 30.42| 30.34|30.371| 0.0| 0.0| 0| 11|ENE| 0| 0| | |02| 64.0 | 36.4 | 50.2 | 49.6 | 44| 82| 15| 0|1........| 0| 0.00| 0.0| 30.41| 30.24|30.322| 0.9| 0.9|203| 17|SSW| 0| 0| | |03| 68.2 | 51.8 | 60.0 | 59.6 | 54| 82| 5| 0|.........| 0| 0.00| 0.0| 30.27| 30.20|30.238| 1.9| 1.8|211| 24|SSW| 0| 0| | |04| 72.1*| 48.9 | 60.5 | 58.9 | 53| 82| 4| 0|.........| 0| 0.00| 0.0| 30.31| 30.14|30.227| 2.4| 2.4|203| 25|SSW| 0| 0| | |05| 63.9 | 40.5 | 52.2 | 54.5 | 51| 89| 12| 0|.........| 0| 0.05| 0.0| 30.25| 30.08|30.139| 4.3| 2.2|237| 24| NE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |06| 47.2 | 34.8 | 41.0 | 41.5 | 33| 74| 24| 0|.........| 0| 0.00| 0.0| 30.36| 30.24|30.298| 4.6| 4.6| 46| 24| NE| 0| 0| | |07| 64.4 | 34.9 | 49.7 | 51.8 | 49| 88| 15| 0|1........| 0| T | 0.0| 30.23| 29.97|30.116| 0.3| 0.3|147| 15| SE| 0| 0| | |08| 63.4 | 51.7 | 57.6 | 57.9 | 55| 92| 7| 0|1........| 0| 0.02| 0.0| 30.04| 29.93|29.971| 2.6| 1.9|222| 22|SSW| 0| 0| | |09| 68.2 | 49.8 | 59.0 | 58.0 | 56| 93| 6| 0|1........| 0| 0.06| 0.0| 30.14| 30.00|30.081| 0.5| 0.5|210| 15| SW| 0| 0| | |10| 71.3 | 58.9 | 65.1*| 64.9 | 62| 90| 0| 0|.........| 0| 0.00| 0.0| 29.98| 29.68|29.790| 3.8| 3.8|203| 27|SSW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |11| 65.7 | 49.3 | 57.5 | 55.0 | 47| 77| 7| 0|.........| 0| 0.01| 0.0| 30.17| 29.71|29.945| 7.1| 4.1| 43| 27|SSW| 0| 0| | |12| 49.9 | 43.7 | 46.8 | 46.6 | 35| 64| 18| 0|.........| 0| 0.02| 0.0| 30.34| 30.18|30.291| 9.3| 9.3| 45| 24| NE| 0| 0| | |13| 49.4 | 36.9 | 43.2 | 45.1 | 39| 81| 22| 0|.........| 0| 0.09| 0.0| 30.35| 30.28|30.326| 8.5| 7.9| 15| 26| NE| 0| 0| | |14| 52.6 | 31.1 | 41.8 | 40.2 | 33| 79| 23| 0|.........| 0| 0.00| 0.0| 30.35| 30.23|30.298| 0.9| 0.5|323| 14|WSW| 0| 0| | |15| 55.8 | 31.8 | 43.8 | 42.4 | 38| 86| 21| 0|.........| 0| 0.00| 0.0| 30.30| 30.11|30.221| 0.3| 0.2| 90| 16| SE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |16| 58.0 | 49.0 | 53.5 | 53.8 | 53| 96| 11| 0|1........| 0| 0.52| 0.0| 30.10| 29.88|29.997| 0.7| 0.7|203| 16|SSW| 0| 0| | |17| 65.0 | 55.8 | 60.4 | 58.8 | 57| 95| 4| 0|1........| 0| 0.23| 0.0| 29.89| 29.59|29.771| 1.3| 1.1|213| 22|SSW| 0| 0| | |18| 63.0 | 45.6 | 54.3 | 56.5 | 50| 81| 10| 0|.........| 0| 0.01| 0.0| 29.85| 29.60|29.672| 6.2| 5.7|233| 25|WSW| 0| 0| | |19| 59.5 | 36.1 | 47.8 | 47.9 | 38| 70| 17| 0|.........| 0| 0.00| 0.0| 30.17| 29.85|29.976| 4.1| 3.1|265| 23|WSW| 0| 0| | |20| 59.8 | 36.4 | 48.1 | 48.3 | 43| 81| 17| 0|.........| 0| 0.18| 0.0| 30.20| 29.52|30.030| 2.5| 2.3|120| 22| SE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |21| 62.2 | 36.7 | 49.5 | 48.2 | 36| 65| 15| 0|.........| 0| 0.40| 0.0| 29.68| 29.35|29.508|12.3|11.2|241| 39|WSW| 0| 0| | |22| 48.1 | 35.1 | 41.6 | 40.0 | 25| 55| 23| 0|.........| 0| 0.00| 0.0| 30.05| 29.69|29.875| 9.4| 8.8|261| 30|WSW| 0| 0| | |23| 51.4 | 26.6 | 39.0 | 39.2 | 25| 60| 26| 0|.........| 0| 0.00| 0.0| 30.13| 29.99|30.047| 2.6| 2.5|206| 22|SSW| 0| 0| | |24| 56.4 | 39.3 | 47.8 | 48.4 | 37| 65| 17| 0|.........| 0| T | 0.0| 30.06| 29.91|29.980| 0.5| 0.5|203| 19|SSW| 0| 0| | |25| 52.6 | 40.9 | 46.8 | 46.8 | 42| 83| 18| 0|.........| 0| 0.00| 0.0| 30.18| 29.91|30.071| 3.8| 3.1| 12| 19| NE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |26| 60.7 | 44.9 | 52.8 | 51.5 | 50| 93| 12| 0|1.3......| 0| 2.16| 0.0| 30.17| 29.36|29.744| 8.4| 4.6| 57| 32|WSW| 0| 0| | |27| 48.6 | 36.7 | 42.7 | 43.3 | 35| 73| 22| 0|.........| 0| 0.00| 0.0| 30.05| 29.51|29.776|10.2| 9.9|252| 33|WSW| 0| 0| | |28| 44.9 | 30.6 | 37.8 | 37.5 | 31| 78| 27| 0|.........| 0| 0.00| 0.0| 30.17| 30.04|30.100| 1.4| 1.3|353| 18| N| 0| 0| | |29| 46.9 | 37.9 | 42.4 | 42.6 | 40| 90| 22| 0|1........| 0| 0.44| 0.0| 30.02| 29.56|29.748| 4.5| 3.7|263| 27|WSW| 0| 0| | |30| 44.3 | 28.7 | 36.5 | 38.0 | 26| 65| 28| 0|.........| 0| 0.00| 0.0| 30.36| 29.84|30.150| 6.6| 6.0|288| 33| NW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |31| 45.9 | 23.8*| 34.8*| 35.8 | 27| 72| 30| 0|.........| 0| 0.00| 0.0| 30.35| 30.08|30.244| 3.6| 3.6|203| 22|SSW| 0| 0| | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- | +------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+ |1783.4|1238.2|------|------|---|----| 496| 0| Days | 4.19| 0.0| 30.42| 29.35|30.043| 4.1| 1.1|267| 39|WSW| 0| 0| ---- | +------+------+------+------+---+----+----+----+------------|+0.94" OR 129% OF NORMAL +------+----+----+---+---+---+---+---+------+ | Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg | +------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+ | 57.5| 40.0| 48.8 | 48.6 | 42|79.3|----|----|>.01 Inch 13|67.52| 0.0| 1 | 21 |------|----|----|---| 21 | 1+ | | + +4.5 +4.3 +4.5 +------+---+----+----+----+------------|+18.29" or 137% 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 |1168|1744|Thunder 1|Precipitation | Snow, Ice Plts | and Date | +--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+ | >90°F | <32°F | <32°F | <0°F |----|----|Heavy Fog 0| 2.16| 26 | 0.0 | - | 0 | - | +--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+ | 0 | 0 | 6 | 0 |----|----| Clear 8 Partly Cloudy 13 Cloudy 10 | +--------+---------+--------+--------+----+----+------------------------------------------+ NOTES: Data in column 4A are (MAX+MIN) / 2, whereas data in columns 4B, 5, 6, 15, 16, 23 are means via continuous observations Units are: Temperature=°F, Wind=mph, Pressure=Inches Hg, Precipitation=inches. for 24 hours. Column 5: Dew point is calculated from temperature and humidity and is continuously averaged for 24 hours. Columns 7, 8: Degree Days heating base is 65°F, cooling base is 65°F. Data in columns 9, 10, 12 are entered manually by the station observer. Columns 17-18: Resultant wind is calculated by the vector sum of continuous wind observations. Column 23: 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:
    DECEMBER 2012 TIED WITH DECEMBER 1977 FOR THE 9th WETTEST DECEMBER IN THE DATABASE T0 1976
    
DECEMBER 2012 WAS THE 6TH WARMEST DECEMBER IN THE DATABASE TO 1976 FROST: 1st, 6th, 7th, 14th,15th, 19th, 20th, 23rd,28th,30th,31st (heavy)
FROPA: 5th, 7th (WARMFROPA), 11th, 18th, 21st, 25th, 26th,29th

STATION RECORDS:
16th- TEMPERATURE TIED Maximum Minimum 49 [previous 1984]
17th - TEMPERATURE Maximum Minimum 56 [previous 51 1992]
21st - WIND GUST 39mph [previous 35mph 1988]
26th - RAINFALL 2.16" [previous 1.06" 2007] MONTHLY AVERAGE MAXIMUM TEMP OF 57.5 WAS 4.5 ABOVE NORMAL. MONTHLY AVERAGE MINIMUM TEMP OF 40.0 WAS 4.3 ABOVE NORMAL. MONTHLY AVERAGE TEMP OF 48.8 WAS 4.5 ABOVE NORMAL. MAXIMUM TEMP: 72 ON THE 4th MINIMUM TEMP: 24 ON THE 31st DAYS WITH TEMPERATURES: MAXIMUM >= 90: 0 MAXIMUM <= 32: 0 MINIMUM <= 32: 6 MINIMUM <= 0: 0 HEATING DEGREE DAYS: 503.0 COOLING DEGREE DAYS: 0.0 DAYS WITH HEATING DEGREE DAYS: 30 DAYS WITH COOLING DEGREE DAYS: 0 PRECIP TOTAL OF 4.19" WAS 0.94" ABOVE NORMAL (129% OF NORMAL). GREATEST DAILY RAINFALL: 2.16" ON THE 26th GREATEST 24-HOUR RAINFALL: 2.16" ON THE 26th DAYS WITH MEASUREABLE PRECIP: 13 OR 41.94% AVERAGE DAILY PRECIP: 0.14" NORMAL DAILY PRECIP: 0.101 DAYS WITH PRECIP >= 0.01" 13 DAYS WITH PRECIP >= 0.10" 6 DAYS WITH PRECIP >= 0.50" 2 DAYS WITH PRECIP >= 1.00" 1 DAYS WITH THUNDERSTORMS: 1 NUMBER OF THUNDERSTORMS: 2 DAYS WITH SNOW: 0 SNOWFALL TOTAL: 0.0" SEASONAL SNOWFALL 2012-2013: 0.0" CLOUDY DAYS: 10 PARTLY CLOUDY DAYS: 13 SUNNY/CLEAR DAYS: 8 DAYS WITH F/GF: 9 DAYS WITH DENSE FOG: 0 DAYS WITH FROST: 11 YEAR-TO-DATE YEARLY AVERAGE MAXIMUM TEMP OF 71.0 WAS 1.4 ABOVE NORMAL. YEARLY AVERAGE MINIMUM TEMP OF 52.8 WAS 1.4 ABOVE NORMAL. YEARLY AVERAGE TEMP OF 61.9 WAS 1.4 ABOVE NORMAL. MAXIMUM TEMP: 102 ON JULY 22ND AND 23RD MINIMUM TEMP: 15 ON JANUARY 23RD DAYS WITH TEMPERATURES: MAXIMUM >= 90: 37 MAXIMUM <= 32: 0 MINIMUM <= 32: 29 MINIMUM <= 0: 0 HEATING DEGREE DAYS: 2831.0 COOLING DEGREE DAYS: 1691.5 DAYS WITH HEATING DEGREE 9AYS: 198 DAYS WITH COOLING DEGREE DAYS: 160 PRECIP TOTAL OF 67.52" WAS 18.29" ABOVE NORMAL (137% OF NORMAL). GREATEST DAILY RAINFALL: 7.82" ON AUGUST 27TH GREATEST 24-HOUR RAINFALL: 7.82" ON AUGUST 27TH DAYS WITH MEASUREABLE PRECIP: 145 OF 365 OR 39.73% AVERAGE DAILY PRECIP: 0.18" NORMAL DAILY PRECIP: 0.14" DAYS WITH PRECIP >= 0.01" 145 DAYS WITH PRECIP >= 0.10" 86 DAYS WITH PRECIP >= 0.50" 44 DAYS WITH PRECIP >= 1.00" 20 DAYS WITH THUNDERSTORMS: 40 NUMBER OF THUNDERSTORMS: 45 DAYS WITH SNOW (calendar year 2012): 2 SNOWFALL TOTAL (calendar year 2012): 0.5" SEASONAL SNOW 2012-2013 (beginning November 2012): 0.0" CLOUDY DAYS: 58 PARTLY CLOUDY DAYS: 176 SUNNY/CLEAR DAYS: 131 DAYS WITH F/GF: 81 DAYS WITH DENSE FOG: 02 DAYS WITH FROST: 39
OBSERVATIONS AT 3-HOUR INTERVALS
December 2012: 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 1 | DEC 2 | DEC 3 | | | | | |01| |30.34| 0.00| 39| 35| 87|00| 0| 0| |30.39| 0.00| 39| 36| 90|00| 0| 0| |30.23| 0.00| 56| 51| 83|20| 4| 15| |04| |30.34| 0.00| 35| 33| 92|00| 0| 0| |30.38| 0.00| 37| 35| 93|00| 0| 0| |30.21| 0.00| 58| 53| 84|20| 6| 20| |07| |30.38| 0.00| 34| 32| 94|00| 0| 0| |30.38| 0.00| 36| 35| 94|00| 0| 0| |30.23| 0.00| 54| 52| 92|20| 4| 14| |10| |30.41| 0.00| 46| 44| 92|15| 0| 6| |30.41| 0.00| 50| 45| 83|20| 0| 11| |30.27| 0.00| 63| 57| 80|24| 4| 12| |13| |30.36| 0.00| 59| 44| 58|13| 0| 10| |30.30| 0.00| 64| 53| 67|20| 4| 14| |30.22| 0.00| 67| 57| 69|20| 0| 10| |16| |30.34| 0.00| 59| 42| 53|06| 0| 11| |30.25| 0.00| 62| 51| 66|20| 4| 17| |30.21| 0.00| 67| 56| 68|20| 0| 7| |19| |30.38| 0.00| 48| 39| 72|00| 0| 0| |30.25| 0.00| 55| 49| 79|22| 0| 10| |30.25| 0.00| 57| 53| 85|00| 0| 0| |22| |30.40| 0.00| 43| 38| 83|00| 0| 0| |30.24| 0.00| 52| 48| 86|20| 0| 11| |30.27| 0.00| 54| 51| 92|20| 0| 4| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 4 | DEC 5 | DEC 6 | | | | | |01| |30.26| 0.00| 52| 50| 95|00| 0| 0| |30.13| 0.00| 58| 56| 94|20| 5| 15| |30.24| 0.00| 46| 37| 71|04| 6| 18| |04| |30.26| 0.00| 50| 49| 96|00| 0| 0| |30.09| 0.00| 57| 55| 95|20| 5| 15| |30.28| 0.00| 43| 35| 73|04| 6| 20| |07| |30.28| 0.00| 49| 48| 97|20| 0| 5| |30.09| 0.00| 58| 56| 93|20| 7| 21| |30.32| 0.00| 39| 30| 69|04| 7| 21| |10| |30.31| 0.00| 59| 57| 94|20| 4| 11| |30.14| 0.00| 63| 59| 84|24| 6| 18| |30.36| 0.00| 42| 29| 61|04| 11| 22| |13| |30.21| 0.00| 71| 57| 61|20| 6| 25| |30.14| 0.03| 55| 51| 86|33| 7| 20| |30.31| 0.00| 44| 35| 71|04| 7| 18| |16| |30.17| 0.00| 71| 54| 56|20| 7| 23| |30.13| 0.00| 53| 47| 82|00| 0| 5| |30.30| 0.00| 45| 36| 71|04| 0| 12| |19| |30.18| 0.00| 62| 54| 75|20| 0| 7| |30.18| 0.00| 47| 44| 90|00| 0| 0| |30.29| 0.00| 38| 34| 84|06| 0| 4| |22| |30.16| 0.00| 58| 54| 88|20| 4| 14| |30.22| 0.00| 41| 40| 95|00| 0| 0| |30.28| 0.00| 36| 34| 92|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 7 | DEC 8 | DEC 9 | | | | | |01| |30.23| 0.00| 37| 36| 95|06| 0| 4| |29.95| 0.00| 61| 60| 96|20| 0| 7| |30.05| 0.00| 51| 51| 97|20| 0| 6| |04| |30.21| 0.00| 37| 36| 95|04| 0| 4| |29.93| 0.00| 61| 60| 97|20| 0| 7| |30.07| 0.00| 50| 49| 97|22| 0| 6| |07| |30.19| 0.00| 46| 44| 94|00| 0| 0| |29.97| 0.01| 55| 54| 97|24| 4| 15| |30.11| 0.00| 53| 52| 98|20| 0| 7| |10| |30.18| 0.00| 51| 48| 89|11| 0| 10| |29.99| 0.00| 57| 56| 96|20| 4| 12| |30.14| 0.00| 57| 56| 99|20| 0| 6| |13| |30.09| 0.00| 62| 54| 76|13| 0| 15| |29.95| 0.00| 61| 56| 85|24| 5| 16| |30.08| 0.00| 65| 62| 90|20| 0| 12| |16| |30.06| 0.00| 63| 56| 77|11| 0| 6| |29.95| 0.00| 62| 56| 81|20| 4| 14| |30.08| 0.00| 67| 61| 82|22| 0| 7| |19| |30.04| 0.00| 59| 54| 85|13| 0| 7| |30.00| 0.00| 54| 52| 92|20| 0| 11| |30.08| 0.00| 61| 58| 89|11| 0| 7| |22| |30.00| 0.00| 58| 56| 93|13| 0| 10| |30.03| 0.00| 53| 52| 96|20| 0| 10| |30.04| 0.00| 59| 56| 90|18| 0| 12| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 10 | DEC 11 | DEC 12 | | | | | |01| |29.98| 0.00| 59| 58| 96|20| 0| 11| |29.71| 0.00| 66| 60| 82|20| 12| 27| |30.18| 0.00| 50| 37| 62|04| 7| 20| |04| |29.92| 0.00| 60| 59| 98|20| 0| 10| |29.75| 0.00| 64| 59| 83|20| 5| 20| |30.23| 0.00| 48| 37| 65|04| 10| 20| |07| |29.86| 0.00| 62| 62| 98|20| 4| 15| |29.81| 0.00| 60| 58| 92|20| 0| 5| |30.28| 0.00| 46| 34| 62|04| 10| 21| |10| |29.83| 0.00| 66| 65| 97|13| 0| 11| |29.95| 0.00| 53| 46| 78|04| 7| 19| |30.33| 0.01| 45| 38| 75|04| 6| 21| |13| |29.72| 0.00| 70| 66| 86|20| 7| 20| |29.98| 0.00| 51| 44| 78|00| 11| 22| |30.31| 0.00| 46| 35| 63|04| 10| 22| |16| |29.68| 0.00| 70| 63| 79|20| 11| 25| |30.03| 0.00| 50| 40| 68|04| 7| 19| |30.31| 0.00| 47| 34| 62|04| 11| 24| |19| |29.70| 0.00| 66| 60| 80|20| 6| 23| |30.10| 0.00| 49| 40| 71|04| 6| 21| |30.34| 0.00| 46| 33| 59|04| 7| 21| |22| |29.69| 0.00| 64| 60| 86|20| 5| 19| |30.14| 0.00| 50| 39| 67|04| 7| 19| |30.34| 0.00| 45| 35| 67|04| 11| 22| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 13 | DEC 14 | DEC 15 | | | | | |01| |30.29| 0.01| 44| 37| 78|04| 11| 23| |30.33| 0.00| 36| 34| 93|04| 0| 4| |30.25| 0.00| 33| 32| 94|00| 0| 0| |04| |30.30| 0.00| 43| 39| 84|04| 11| 25| |30.32| 0.00| 33| 31| 94|00| 0| 0| |30.24| 0.00| 32| 31| 95|00| 0| 0| |07| |30.31| 0.01| 43| 40| 87|00| 10| 25| |30.34| 0.00| 31| 30| 96|04| 0| 4| |30.25| 0.00| 34| 33| 97|00| 0| 0| |10| |30.34| 0.00| 47| 42| 82|00| 11| 23| |30.35| 0.00| 43| 39| 84|04| 4| 11| |30.29| 0.00| 43| 41| 93|33| 0| 5| |13| |30.34| 0.00| 49| 42| 75|00| 11| 24| |30.29| 0.00| 50| 36| 57|31| 0| 10| |30.23| 0.00| 54| 43| 66|11| 0| 7| |16| |30.34| 0.00| 48| 39| 72|00| 10| 21| |30.25| 0.00| 52| 30| 42|24| 0| 10| |30.19| 0.00| 54| 43| 67|13| 4| 16| |19| |30.34| 0.00| 45| 39| 79|00| 5| 16| |30.26| 0.00| 41| 35| 78|00| 0| 0| |30.17| 0.00| 44| 41| 87|00| 0| 0| |22| |30.34| 0.00| 42| 38| 85|04| 0| 10| |30.26| 0.00| 36| 33| 90|00| 0| 0| |30.13| 0.00| 46| 44| 95|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 16 | DEC 17 | DEC 18 | | | | | |01| |30.10| 0.03| 50| 48| 94|00| 0| 0| |29.88| 0.03| 57| 56| 98|20| 4| 17| |29.63| 0.00| 58| 56| 92|20| 5| 19| |04| |30.07| 0.09| 50| 50| 97|04| 0| 10| |29.84| 0.01| 56| 56| 98|24| 0| 10| |29.62| 0.00| 56| 54| 94|20| 7| 18| |07| |30.07| 0.00| 51| 50| 97|31| 0| 5| |29.79| 0.02| 57| 56| 98|20| 0| 10| |29.64| 0.00| 54| 53| 98|20| 5| 18| |10| |30.05| 0.00| 54| 53| 98|22| 0| 6| |29.83| 0.00| 58| 58| 99|31| 0| 11| |29.65| 0.00| 60| 56| 88|24| 10| 25| |13| |29.97| 0.00| 58| 56| 93|20| 4| 15| |29.77| 0.00| 65| 60| 86|24| 0| 11| |29.60| 0.00| 63| 49| 62|24| 10| 20| |16| |29.95| 0.00| 57| 55| 94|22| 0| 5| |29.75| 0.00| 61| 58| 89|04| 0| 4| |29.64| 0.00| 58| 52| 80|24| 4| 12| |19| |29.93| 0.00| 55| 55| 97|20| 0| 10| |29.69| 0.00| 58| 57| 96|04| 0| 7| |29.73| 0.00| 53| 43| 69|24| 4| 20| |22| |29.90| 0.02| 56| 55| 98|20| 0| 14| |29.59| 0.00| 59| 57| 94|20| 5| 22| |29.83| 0.00| 50| 38| 63|24| 7| 19| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Precipitation | 0.05 | 0.10 | 0.15 | 0.20 | 0.30 | 0.44 | 0.59 | 0.67 | 0.76 | 0.86 | 0.92 | 1.00 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Date | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Time | 1404 | 1409 | 1414 | 1419 | 1429 | 1444 | 1500 | 1458 | 1458 | 1500 | 1458 | 1500 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ 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
December 2012: 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 19 | DEC 20 | DEC 21 | | | | | |01| |29.85| 0.00| 43| 37| 77|24| 4| 16| |30.17| 0.00| 46| 39| 75|04| 4| 14| |29.47| 0.15| 60| 59| 96|13| 6| 22| |04| |29.89| 0.00| 40| 35| 84|24| 0| 11| |30.18| 0.00| 41| 35| 80|04| 0| 7| |29.36| 0.05| 60| 58| 92|20| 10| 24| |07| |29.92| 0.00| 36| 34| 92|20| 4| 11| |30.20| 0.00| 37| 35| 89|00| 0| 0| |29.45| 0.00| 48| 38| 69|24| 13| 38| |10| |29.95| 0.00| 49| 38| 66|24| 7| 21| |30.18| 0.00| 47| 40| 76|06| 0| 11| |29.51| 0.00| 47| 34| 60|24| 13| 33| |13| |29.95| 0.00| 59| 39| 47|29| 11| 22| |30.07| 0.00| 54| 44| 69|13| 4| 18| |29.50| 0.00| 47| 31| 55|24| 14| 32| |16| |29.98| 0.00| 58| 39| 48|31| 5| 17| |29.97| 0.00| 53| 46| 75|09| 4| 16| |29.53| 0.00| 46| 28| 49|24| 15| 35| |19| |30.08| 0.00| 49| 41| 74|04| 0| 10| |29.87| 0.00| 53| 49| 84|11| 4| 18| |29.61| 0.00| 41| 26| 54|24| 12| 31| |22| |30.15| 0.00| 48| 42| 79|04| 0| 10| |29.69| 0.00| 57| 54| 90|13| 6| 22| |29.66| 0.00| 38| 24| 55|24| 13| 34| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 22 | DEC 23 | DEC 24 | | | | | |01| |29.69| 0.00| 36| 24| 62|24| 12| 29| |30.05| 0.00| 33| 24| 71|24| 0| 4| |30.00| 0.00| 45| 29| 54|20| 4| 12| |04| |29.73| 0.00| 35| 24| 64|24| 11| 27| |30.08| 0.00| 29| 23| 79|27| 0| 4| |30.00| 0.00| 41| 30| 64|20| 0| 7| |07| |29.81| 0.00| 36| 24| 63|24| 11| 28| |30.10| 0.00| 27| 23| 83|24| 0| 5| |30.04| 0.00| 42| 34| 75|00| 0| 0| |10| |29.88| 0.00| 41| 26| 55|24| 12| 30| |30.13| 0.00| 37| 26| 64|24| 5| 12| |30.06| 0.00| 49| 38| 65|20| 0| 7| |13| |29.88| 0.00| 46| 27| 46|29| 13| 29| |30.03| 0.00| 48| 24| 39|20| 4| 18| |29.98| 0.00| 55| 38| 52|18| 0| 6| |16| |29.91| 0.00| 48| 24| 39|29| 11| 25| |29.99| 0.00| 50| 26| 39|20| 4| 16| |29.93| 0.00| 54| 41| 61|31| 0| 10| |19| |30.01| 0.00| 39| 25| 58|24| 0| 14| |30.00| 0.00| 47| 29| 49|20| 6| 21| |29.92| 0.00| 51| 43| 72|11| 0| 6| |22| |30.04| 0.00| 38| 24| 57|24| 5| 17| |30.01| 0.00| 46| 29| 51|20| 5| 20| |29.91| 0.00| 52| 43| 72|20| 4| 19| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 25 | DEC 26 | DEC 27 | | | | | |01| |29.91| 0.00| 51| 42| 70|24| 0| 10| |30.17| 0.00| 46| 42| 85|04| 10| 20| |29.51| 0.00| 42| 40| 91|24| 13| 30| |04| |29.94| 0.00| 41| 38| 89|24| 0| 4| |30.10| 0.00| 45| 40| 83|04| 11| 23| |29.56| 0.00| 41| 39| 91|24| 11| 24| |07| |30.04| 0.00| 48| 45| 88|33| 5| 14| |30.04| 0.00| 47| 43| 88|04| 12| 24| |29.66| 0.00| 40| 37| 86|24| 10| 23| |10| |30.09| 0.00| 49| 45| 87|00| 5| 12| |29.90| 0.17| 49| 47| 95|06| 11| 24| |29.77| 0.00| 44| 36| 74|24| 13| 28| |13| |30.08| 0.00| 49| 43| 79|04| 7| 19| |29.61| 0.14| 55| 54| 98|06| 6| 21| |29.80| 0.00| 48| 32| 55|24| 14| 29| |16| |30.12| 0.00| 48| 40| 75|33| 6| 15| |29.43| 0.04| 59| 58| 98|13| 4| 15| |29.86| 0.00| 48| 32| 54|24| 11| 25| |19| |30.14| 0.00| 44| 40| 85|04| 4| 12| |29.36| 0.00| 60| 60| 99|15| 0| 10| |29.95| 0.00| 43| 32| 65|24| 7| 19| |22| |30.18| 0.00| 45| 41| 85|04| 4| 12| |29.44| 0.00| 52| 49| 92|24| 11| 25| |30.00| 0.00| 40| 31| 70|29| 6| 19| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 28 | DEC 29 | DEC 30 | | | | | |01| |30.04| 0.00| 35| 29| 78|29| 4| 11| |30.02| 0.00| 39| 37| 90|00| 0| 0| |29.84| 0.00| 40| 33| 75|29| 6| 18| |04| |30.07| 0.00| 32| 28| 86|31| 0| 5| |29.95| 0.00| 41| 37| 85|13| 0| 4| |29.94| 0.00| 36| 30| 78|27| 5| 17| |07| |30.11| 0.00| 35| 29| 78|00| 5| 15| |29.84| 0.08| 41| 40| 95|04| 0| 6| |30.06| 0.00| 35| 28| 77|24| 6| 15| |10| |30.17| 0.00| 40| 31| 71|00| 5| 15| |29.67| 0.03| 46| 45| 97|11| 0| 7| |30.18| 0.00| 41| 27| 58|29| 11| 22| |13| |30.12| 0.00| 42| 31| 65|27| 0| 11| |29.58| 0.03| 45| 44| 96|29| 7| 21| |30.18| 0.00| 44| 24| 45|31| 16| 33| |16| |30.11| 0.00| 44| 33| 66|24| 0| 11| |29.59| 0.00| 45| 42| 88|24| 12| 27| |30.24| 0.00| 44| 24| 46|24| 10| 25| |19| |30.07| 0.00| 37| 32| 82|00| 0| 0| |29.67| 0.00| 41| 40| 95|24| 5| 16| |30.28| 0.00| 36| 24| 62|27| 0| 10| |22| |30.10| 0.00| 37| 34| 91|00| 0| 0| |29.77| 0.00| 41| 36| 81|24| 10| 21| |30.35| 0.00| 30| 24| 78|29| 0| 4| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | DEC 31 | | | | | | | |01| |30.34| 0.00| 27| 24| 88|00| 0| 0| | | |04| |30.33| 0.00| 25| 23| 93|00| 0| 0| | | |07| |30.34| 0.00| 24| 23| 95|00| 0| 0| | | |10| |30.33| 0.00| 35| 30| 82|20| 4| 14| | | |13| |30.22| 0.00| 45| 28| 52|20| 7| 21| | | |16| |30.16| 0.00| 44| 29| 56|20| 5| 16| | | |19| |30.14| 0.00| 42| 31| 63|20| 4| 13| | | |22| |30.11| 0.00| 45| 32| 58|20| 5| 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| |30.058| 45| 40| 84| 3.5| 23 | 0.7| |04| |30.055| 43| 40| 87| 3.0| 22 | 0.5| |07| |30.079| 43| 39| 89| 3.5| 27 | 1.0| |10| |30.100| 48| 43| 81| 4.9| 27 | 1.6| |13| |30.040| 54| 43| 68| 6.0| 28 | 2.3| |16| |30.024| 54| 42| 67| 4.8| 24 | 2.0| |19| |30.039| 49| 41| 77| 2.4| 23 | 0.8| |22| |30.045| 47| 41| 80| 3.6| 23 | 1.8| +--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
December 2012: 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| | | | | | | | | | | | | | | | | | | | | | | | |01 02| | | | | | | | | | | | | | | | | | | | | | | | |02 03| | | | | | | | | | | | | | | | | | | | | | | | |03 04| | | | | | | | | | | | | | | | | | | | | | | | |04 05| | | | | | | | | | | | | |0.03| |0.02| | | | | | | | |05 | | | | | | | | | | | | | | | | | | | | | | | | | 06| | | | | | | | | | | | | | | | | | | | | | | | |06 07| | | | | | | | | | | | | | | | | | | | | | | | |07 08| | |0.01| | | | |0.01| | | | | | | | | | | | | | | | |08 09| | | | | | | | | |0.06| | | | | | | | | | | | | | |09 10| | | | | | | | | | | | | | | | | | | | | | | | |10 | | | | | | | | | | | | | | | | | | | | | | | | | 11| | | | | |0.01| | | | | | | | | | | | | | | | | | |11 12| | | | | | | | |0.01| |0.01| | | | | | | | | | | | | |12 13| |0.01|0.01| | |0.03|0.03|0.01| | | | | | | | | | | | | | | | |13 14| | | | | | | | | | | | | | | | | | | | | | | | |14 15| | | | | | | | | | | | | | | | | | | | | | | | |15 | | | | | | | | | | | | | | | | | | | | | | | | | 16| |0.03|0.03|0.07|0.09|0.13|0.04| |0.03| | | | | | | | |0.03|0.03| | |0.01|0.02|0.01|16 17| |0.03|0.06|0.07|0.01|0.01| |0.02|0.01| | | | | | | | |0.01| | |0.01| | | |17 18| | | | | | | | | | | | | | | |0.01| | | | | | | | |18 19| | | | | | | | | | | | | | | | | | | | | | | | |19 20| | | | | | | | | | | | | | | | | | | | | |0.01| |0.17|20 | | | | | | | | | | | | | | | | | | | | | | | | | 21| |0.15|0.15|0.05|0.05| | | | | | | | | | | | | | | | | | | |21 22| | | | | | | | | | | | | | | | | | | | | | | | |22 23| | | | | | | | | | | | | | | | | | | | | | | | |23 24| | | | | | | | | | | | | | | | | | | | | | | | |24 25| | | | | | | | | | | | | | | | | | | | | | | | |25 | | | | | | | | | | | | | | | | | | | | | | | | | 26| | | | | | |0.01| |0.01|0.02|0.17|0.17|0.17|0.14|0.27|0.58|0.04|0.36|0.02| |0.20| | | |26 27| | | | | | | | | | | | | | | | | | | | | | | | |27 28| | | | | | | | | | | | | | | | | | | | | | | | |28 29| | | | | | |0.05|0.08|0.13|0.05|0.03|0.04|0.03|0.03| | | | | | | | | | |29 30| | | | | | | | | | | | | | | | | | | | | | | | |30 31| | | | | | | | | | | | | | | | | | | | | | | | |31 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- Sum| |0.22|0.26|0.19|0.15|0.18|0.13|0.12|0.19|0.13|0.21|0.21|0.20|0.20|0.27|0.61|0.04|0.40|0.05|0.00|0.21|0.02|0.02|0.18|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.)