LOCAL CLIMATOLOGICAL DATA Monthly Summary
January 2010

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| 43.1 | 32.4 | 37.8 | 41.0 | 39| 93| 27| 0|1........|.2| 0.06| 0.2| 29.96| 29.84|29.910| 5.0| 4.4| 30| 25| NE| 0| 0| | |02| 32.4 | 23.7 | 28.1 | 28.6 | 13| 53| 37| 0|.........| T| 0.00| 0.0| 29.98| 29.88|29.922|12.1|11.2|346| 34| N| 0| 0| | |03| 32.2 | 19.7 | 26.0 | 25.6 | 8| 47| 39| 0|.........| T| 0.00| 0.0| 29.96| 29.81|29.887|11.3|10.9|298| 32|WNW| 0| 0| | |04| 35.3 | 21.2 | 28.3 | 27.8 | 14| 56| 37| 0|.........| 0| 0.00| 0.0| 29.93| 29.84|29.894| 6.2| 5.9|299| 22|WNW| 0| 0| | |05| 34.7 | 21.3 | 28.0 | 28.2 | 16| 60| 37| 0|.........| 0| 0.00| 0.0| 29.93| 29.84|29.894| 6.1| 5.4|306| 23|WNW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |06| 40.0 | 23.7 | 31.9 | 31.4 | 18| 57| 33| 0|.........| 0| 0.00| 0.0| 30.01| 29.88|29.923| 6.7| 6.7|295| 27|WNW| 0| 0| | |07| 40.0 | 23.1 | 31.5 | 31.4 | 21| 65| 33| 0|.........| 0| 0.00| 0.0| 30.10| 29.91|30.017| 2.0| 1.9|295| 18|WNW| 0| 0| | |08| 37.9 | 26.2 | 32.1 | 33.2 | 22| 65| 33| 0|1........| T| 0.05| T | 30.06| 29.82|29.898| 7.0| 5.3|306| 27|WNW| 0| 0| | |09| 33.9 | 21.3 | 27.6 | 28.2 | 16| 59| 37| 0|.........| 0| 0.00| 0.0| 30.21| 30.07|30.139| 7.8| 6.6| 8| 32| N| 0| 0| | |10| 31.2 | 23.6 | 27.4 | 27.5 | 12| 53| 37| 0|.........| 0| 0.00| 0.0| 30.33| 30.21|30.279| 9.6| 9.3| 37| 27| NE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |11| 41.5 | 19.4*| 30.5 | 30.3 | 14| 51| 34| 0|.........| 0| 0.00| 0.0| 30.31| 30.11|30.220| 2.4| 1.8|256| 17|WSW| 0| 0| | |12| 36.5 | 28.0 | 32.3 | 33.9 | 21| 58| 32| 0|.........| 0| 0.00| 0.0| 30.25| 30.08|30.148| 6.2| 5.2| 21| 24|NNE| 0| 0| | |13| 42.6 | 27.7 | 35.2 | 33.5 | 20| 58| 29| 0|.........| 0| 0.00| 0.0| 30.36| 30.23|30.278| 4.9| 3.1|360| 23| NE| 0| 0| | |14| 51.4 | 27.4 | 39.4 | 37.6 | 24| 58| 26| 0|.........| 0| 0.00| 0.0| 30.30| 30.22|30.257| 1.3| 1.2|245| 10| SW| 0| 0| | |15| 57.6 | 31.1 | 44.3 | 42.5 | 28| 58| 20| 0|.........| 0| 0.00| 0.0| 30.26| 30.18|30.226| 1.8| 1.6|276| 15|WNW| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |16| 58.3 | 32.8 | 45.5 | 44.7 | 34| 68| 19| 0|.........| 0| 0.00| 0.0| 30.30| 30.13|30.226| 0.7| 0.4| 73| 11| E| 0| 0| | |17| 64.9 | 44.7 | 54.8 | 53.1 | 50| 89| 10| 0|1........| 0| 1.02| 0.0| 30.11| 29.45|29.737| 3.7| 2.1|211| 23|WNW| 0| 0| | |18| 53.7 | 39.8 | 46.8 | 46.3 | 40| 80| 18| 0|.........| 0| 0.00| 0.0| 29.98| 29.57|29.819| 7.0| 5.9|347| 26| N| 0| 0| | |19| 61.1 | 38.9 | 50.0 | 48.3 | 41| 77| 15| 0|.........| 0| 0.00| 0.0| 29.98| 29.87|29.924| 2.9| 2.7|267| 21|WNW| 0| 0| | |20| 47.7 | 36.1 | 41.9 | 41.9 | 35| 78| 23| 0|1........| 0| 0.13| 0.0| 30.06| 29.87|29.951| 5.7| 5.5| 85| 22| E| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |21| 43.5 | 36.1 | 39.8 | 39.4 | 36| 86| 25| 0|1........| 0| 0.46| 0.0| 30.16| 29.78|30.048| 9.0| 9.0| 90| 23| E| 0| 0| | |22| 44.4 | 36.2 | 40.3 | 41.2 | 38| 90| 25| 0|1........| 0| 0.20| 0.0| 30.06| 29.68|29.826| 8.5| 8.0| 59| 27| E| 0| 0| | |23| 43.4 | 34.1 | 38.8 | 38.5 | 33| 80| 26| 0|.........| 0| 0.00| 0.0| 30.24| 30.06|30.174| 5.5| 5.2| 82| 24| E| 0| 0| | |24| 66.1*| 39.6 | 52.8 | 53.5 | 49| 83| 12| 0|.........| 0| 0.00| 0.0| 30.16| 29.71|29.976| 3.7| 3.4|173| 24|SSE| 0| 0| | |25| 63.7 | 49.0 | 56.3*| 58.9 | 53| 83| 8| 0|1........| 0| 1.41| 0.0| 29.67| 29.37|29.470| 9.5| 8.5|188| 35|SSE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |26| 50.2 | 37.8 | 44.0 | 45.1 | 28| 52| 21| 0|.........| 0| 0.00| 0.0| 29.99| 29.61|29.801| 9.8| 9.3|242| 30|WSW| 0| 0| | |27| 47.0 | 30.7 | 38.8 | 38.7 | 27| 63| 26| 0|.........| 0| 0.00| 0.0| 30.24| 30.00|30.161| 3.5| 2.8|248| 22|WSW| 0| 0| | |28| 57.8 | 32.0 | 44.9 | 44.5 | 31| 60| 20| 0|.........| 0| 0.00| 0.0| 30.22| 29.97|30.108| 6.0| 4.7|218| 32|SSW| 0| 0| | |29| 38.8 | 27.9 | 33.3 | 31.2 | 15| 51| 31| 0|.........| 0| 0.00| 0.0| 30.39| 30.21|30.317| 8.8| 8.6| 41| 28| NE| 0| 0| | |30| 29.5 | 21.9 | 25.7 | 25.9 | 21| 83| 39| 0|1..4....9| 6| 1.20| 5.7| 30.28| 29.87|30.037|11.9|11.5| 39| 32| NE| 0| 0| | | | | | | | | | | | | | | | | | | | | | | | | | | |31| 30.7 | 19.7 | 25.2*| 24.1 | 14| 68| 39| 0|.........| 6| 0.05| 0.3| 30.25| 29.93|30.148| 7.5| 7.0|334| 32| N| 0| 0| | +--+------+------+------+------+---+----+----+----+---------+--+-----+-----+------+------+------+----+----+---+---+---+---+---+------+ | Sum | Sum |------|------|---|----| Ttl| Ttl| |Total|Total| For the month: | ---- | +------+------+------+------+---+----+----+----+ Number of +-----+-----+------+------+------+----+----+---+---+---+---+---+------+ |1391.1| 927.1|------|------|---|----| 848| 0| Days | 4.58| 6.2| 30.39| 29.37|30.020| 6.3| 2.1|348| 35|SSE| 0| 0| ---- | +------+------+------+------+---+----+----+----+------------|+0.87" or 124% of normal +------+----+----+---+---+---+---+---+------+ | Avg | Avg | Avg | Mean |Avg| Avg|----|----|Precip | Season Ttl| Date | Date |------|----|----|---| Date | Date | Avg | +------+------+------+------+---+----+----+----+ +-----+-----+------+------+------+----+----+---+-------+-------+------+ | 44.9| 29.9| 37.4 | 37.3 | 27|67.2|----|----|>.01 Inch 9| 4.58| 6.5| 29 | 25 |------|----|----|---| 25 | 1+ | | + -3.9 -2.0 -2.9 ------+---+----+----+----+------------|+0.87" or 124% of normal +------+----+----+---+-------+-------+------+ | | Season |Snow, Ice | | | | Number of Days | to Date |>1.0 Inch 1| Greatest in 24 Hours and Dates | Greatest Depth on Ground | +------------------+-----------------+----+----+------------+--------------+-----------------+ of Snow, Ice Pellets or Ice | | Max Temperature | Min Temperature |1987| 0|Thunder 0|Precipitation | Snow, Ice Plts | and Date | +--------+---------+--------+--------+----+----+------------+-------+------+---------+-------+-------------+----------------------+ | >90°F | <32°F | <32°F | <0°F |----|----|Heavy Fog 0| 1.41| 25 | 5.7 | 30 | 6 | 31 | +--------+---------+--------+--------+----+----+------------+-------+------+---------+----+--+-------------+----------------------+ | 0 | 5 | 20 | 0 |----|----| Clear 13 Partly Cloudy 13 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:
    FROPA:  1,8,12,20,25,26,29,30
FROST: 5,7,11,13,14,15,16,23,28
STATION RECORDS [database to 7/1/76]:
1st - SNOW 0.2" [prev - none ]
2nd - TEMP Min Max 32 [prev 36 2001]
3rd - TEMP TIED Min Max 32 [prev 2008]
4th - TEMP Min Max 35 [prev 37 1977]
17th - RAIN 1.02" [prev 0.75" 1994]
17th - TEMP Max Min 45 [prev 44 1995]
25th - RAIN 1.41" [prev 0.86" 2000]
25th - TEMP Max Min 49 [ 48 1990]
26th - TEMP Max Min 38 [prev 1999]
30th - SNOW 5.7 [prev 1.8" 1994]
30th - TEMP Min Max 30 [prev 31 1981] JANUARY 2010 WAS THE 6TH SNOWIEST JANUARY IN THE DATABASE RECORD TO 7/1/76 The top January snowfalls include: 1) TIE 9.0" 1980,2002 3) 6.9" 1994 4) 6.7" 2000 5) 6.4" 1985 6) 6.2" 2010 MONTHLY AVERAGE MAXIMUM TEMP OF 44.9 WAS 3.9 BELOW NORMAL. MONTHLY AVERAGE MINIMUM TEMP OF 29.9 WAS 2.0 BELOW NORMAL. MONTHLY AVERAGE TEMP OF 37.4 WAS 2.9 BELOW NORMAL. MAXIMUM TEMP: 66 ON THE 24TH MINIMUM TEMP: 19 ON THE 11TH DAYS WITH TEMPERATURES: MAXIMUM >= 90: 0 MAXIMUM <= 32: 5 MINIMUM <= 32: 20 MINIMUM <= 0: 0 HEATING DEGREE DAYS: 854.5 COOLING DEGREE DAYS: 0.0 DAYS WITH HEATING DEGREE DAYS: 31 DAYS WITH COOLING DEGREE DAYS: 0 PRECIP TOTAL OF 4.58" WAS 0.87" ABOVE NORMAL (124% OF NORMAL). GREATEST DAILY RAINFALL: 1.41" ON THE 25TH GREATEST 24-HOUR RAINFALL: 1.41" ON THE 25TH DAYS WITH MEASUREABLE PRECIP: 9 OR 29.03% AVERAGE DAILY PRECIP: 0.15" NORMAL DAILY PRECIP: 0.12" DAYS WITH PRECIP >= 0.01" 9 DAYS WITH PRECIP >= 0.10" 6 DAYS WITH PRECIP >= 0.50" 3 DAYS WITH PRECIP >= 1.00" 3 DAYS WITH THUNDERSTORMS: 0 NUMBER OF THUNDERSTORMS: 0 DAYS WITH SNOW: 04 SNOWFALL TOTAL: 6.2" CLOUDY DAYS: 5 PARTLY CLOUDY DAYS: 13 SUNNY/CLEAR DAYS: 13 DAYS WITH F/GF: 8 DAYS WITH DENSE FOG: 0 DAYS WITH FROST: 9 YEAR-TO-DATE YEARLY AVERAGE MAXIMUM TEMP OF 44.9 WAS 3.9 BELOW NORMAL. YEARLY AVERAGE MINIMUM TEMP OF 29.9 WAS 2.0 BELOW NORMAL. YEARLY AVERAGE TEMP OF 37.4 WAS 2.9 BELOW NORMAL. MAXIMUM TEMP: 66 ON JANUARY 24TH MINIMUM TEMP: 19 ON JANUARY 11TH DAYS WITH TEMPERATURES: MAXIMUM >= 90: 0 MAXIMUM <= 32: 5 MINIMUM <= 32: 20 MINIMUM <= 0: 0 HEATING DEGREE DAYS: 854.5 COOLING DEGREE DAYS: 0.0 DAYS WITH HEATING DEGREE DAYS: 31 DAYS WITH COOLING DEGREE DAYS: 0 PRECIP TOTAL OF 4.58" WAS +0.87" ABOVE NORMAL ( 124% OF NORMAL). GREATEST DAILY RAINFALL: 1.41" ON JANUARY 25TH GREATEST 24-HOUR RAINFALL: 1.41" ON JANUARY 25TH DAYS WITH MEASUREABLE PRECIP: 9 OF 31 OR 29.03% AVERAGE DAILY PRECIP: 0.15" NORMAL DAILY PRECIP: 0.12" DAYS WITH PRECIP >= 0.01" 9 DAYS WITH PRECIP >= 0.10" 6 DAYS WITH PRECIP >= 0.50" 3 DAYS WITH PRECIP >= 1.00" 3 DAYS WITH THUNDERSTORMS: 0 NUMBER OF THUNDERSTORMS: 0 DAYS WITH SNOW: 05 SNOWFALL TOTAL: 6.2" SEASONAL SNOW: 6.5" CLOUDY DAYS: 5 PARTLY CLOUDY DAYS: 13 SUNNY/CLEAR DAYS: 13 DAYS WITH F/GF: 8 DAYS WITH DENSE FOG: 0 DAYS WITH FROST: 9
OBSERVATIONS AT 3-HOUR INTERVALS
January 2010: 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | JAN 1 | JAN 2 | JAN 3 | | | | | |01| |29.96| 0.00| 43| 43|100|02| 4| 7| |29.89| 0.00| 31| 22| 68|02| 14| 26| |29.96| 0.00| 23| 7| 50|29| 11| 28| |04| |29.93| 0.00| 42| 42|100|04| 4| 7| |29.91| 0.00| 28| 16| 59|00| 13| 27| |29.92| 0.00| 21| 6| 52|33| 11| 23| |07| |29.94| 0.00| 41| 41|100|04| 5| 15| |29.91| 0.00| 27| 16| 62|33| 7| 22| |29.94| 0.00| 20| 5| 52|29| 11| 28| |10| |29.96| 0.00| 41| 41|100|04| 6| 14| |29.92| 0.00| 29| 16| 57|33| 12| 26| |29.93| 0.00| 23| 6| 46|29| 13| 32| |13| |29.88| 0.00| 41| 41|100|04| 7| 17| |29.88| 0.00| 31| 13| 48|33| 14| 33| |29.82| 0.00| 30| 9| 41|29| 13| 29| |16| |29.88| 0.00| 42| 37| 80|04| 7| 18| |29.90| 0.00| 30| 11| 44|33| 14| 33| |29.82| 0.00| 32| 10| 39|29| 12| 25| |19| |29.88| 0.00| 41| 35| 80|02| 5| 13| |29.97| 0.00| 27| 9| 46|33| 11| 26| |29.85| 0.00| 29| 10| 44|29| 11| 31| |22| |29.84| 0.00| 38| 35| 87|31| 0| 7| |29.98| 0.00| 25| 8| 48|29| 10| 24| |29.89| 0.00| 27| 11| 50|29| 6| 16| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | JAN 4 | JAN 5 | JAN 6 | | | | | |01| |29.89| 0.00| 26| 12| 55|31| 6| 19| |29.89| 0.00| 28| 15| 59|02| 4| 10| |29.90| 0.00| 27| 16| 62|29| 5| 15| |04| |29.91| 0.00| 23| 11| 61|29| 6| 15| |29.91| 0.00| 24| 15| 68|31| 4| 7| |29.90| 0.00| 25| 15| 65|29| 6| 16| |07| |29.92| 0.00| 21| 11| 64|29| 6| 17| |29.92| 0.00| 21| 14| 72|29| 6| 12| |29.93| 0.00| 24| 15| 67|29| 6| 17| |10| |29.93| 0.00| 26| 13| 56|29| 10| 20| |29.93| 0.00| 29| 16| 59|29| 6| 16| |29.95| 0.00| 31| 17| 56|29| 10| 20| |13| |29.86| 0.00| 34| 16| 47|29| 10| 19| |29.86| 0.00| 33| 16| 50|00| 11| 20| |29.88| 0.00| 38| 20| 48|29| 10| 22| |16| |29.85| 0.00| 35| 17| 48|29| 7| 17| |29.85| 0.00| 34| 17| 49|29| 10| 20| |29.89| 0.00| 40| 21| 46|29| 11| 24| |19| |29.89| 0.00| 31| 16| 55|29| 4| 7| |29.89| 0.00| 30| 16| 57|29| 4| 11| |29.94| 0.00| 35| 20| 55|31| 4| 10| |22| |29.90| 0.00| 27| 16| 62|29| 0| 7| |29.90| 0.00| 29| 16| 58|29| 7| 17| |29.99| 0.00| 32| 19| 59|29| 4| 13| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | JAN 7 | JAN 8 | JAN 9 | | | | | |01| |30.02| 0.00| 27| 19| 70|31| 0| 5| |29.88| 0.00| 35| 26| 67|24| 4| 14| |30.07| 0.00| 27| 13| 55|00| 12| 32| |04| |30.03| 0.00| 25| 18| 75|31| 0| 4| |29.83| 0.02| 34| 31| 86|24| 0| 7| |30.09| 0.00| 26| 13| 59|00| 13| 24| |07| |30.07| 0.00| 24| 18| 77|31| 0| 4| |29.82| 0.00| 34| 32| 90|22| 5| 12| |30.14| 0.00| 21| 12| 66|29| 4| 12| |10| |30.10| 0.00| 31| 22| 68|29| 5| 12| |29.86| 0.00| 37| 32| 80|29| 10| 21| |30.18| 0.00| 26| 15| 62|00| 10| 19| |13| |30.01| 0.00| 38| 23| 54|24| 5| 11| |29.84| 0.00| 36| 20| 52|00| 11| 25| |30.13| 0.00| 32| 18| 56|00| 11| 21| |16| |29.98| 0.00| 39| 23| 51|29| 6| 15| |29.92| 0.00| 32| 11| 41|00| 12| 23| |30.11| 0.00| 34| 19| 54|04| 7| 18| |19| |29.97| 0.00| 34| 22| 63|00| 0| 0| |29.99| 0.00| 28| 12| 49|29| 5| 15| |30.17| 0.00| 32| 18| 58|02| 4| 12| |22| |29.95| 0.00| 35| 23| 63|22| 0| 5| |30.03| 0.00| 27| 11| 50|33| 6| 18| |30.20| 0.00| 30| 19| 62|04| 6| 16| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | JAN 10 | JAN 11 | JAN 12 | | | | | |01| |30.21| 0.00| 29| 15| 55|04| 11| 20| |30.30| 0.00| 26| 11| 54|00| 4| 10| |30.09| 0.00| 35| 17| 48|22| 0| 5| |04| |30.23| 0.00| 26| 15| 64|02| 7| 18| |30.29| 0.00| 23| 13| 63|02| 0| 7| |30.08| 0.00| 36| 27| 70|24| 4| 10| |07| |30.27| 0.00| 24| 13| 63|04| 10| 19| |30.31| 0.00| 20| 12| 72|02| 0| 4| |30.13| 0.00| 34| 27| 75|04| 7| 19| |10| |30.33| 0.00| 26| 14| 60|04| 13| 24| |30.30| 0.00| 27| 15| 59|27| 4| 10| |30.18| 0.00| 33| 21| 59|04| 11| 23| |13| |30.28| 0.00| 29| 13| 50|04| 11| 21| |30.19| 0.00| 39| 16| 38|24| 6| 16| |30.14| 0.00| 35| 20| 53|02| 10| 19| |16| |30.26| 0.00| 31| 10| 41|00| 10| 21| |30.13| 0.00| 41| 15| 34|24| 6| 16| |30.13| 0.00| 35| 18| 49|00| 12| 23| |19| |30.31| 0.00| 29| 9| 42|02| 6| 15| |30.14| 0.00| 35| 14| 41|22| 0| 7| |30.19| 0.00| 32| 18| 55|00| 4| 12| |22| |30.31| 0.00| 27| 10| 48|02| 6| 12| |30.13| 0.00| 34| 15| 44|22| 4| 7| |30.23| 0.00| 30| 19| 63|00| 0| 7| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | JAN 13 | JAN 14 | JAN 15 | | | | | |01| |30.25| 0.00| 30| 18| 60|02| 11| 20| |30.26| 0.00| 29| 19| 66|24| 0| 5| |30.24| 0.00| 36| 27| 68|22| 0| 4| |04| |30.27| 0.00| 29| 18| 64|04| 7| 18| |30.25| 0.00| 29| 19| 66|24| 4| 6| |30.22| 0.00| 33| 25| 73|22| 0| 6| |07| |30.31| 0.00| 28| 19| 68|04| 5| 14| |30.26| 0.00| 28| 20| 71|24| 0| 4| |30.24| 0.00| 32| 25| 77|22| 0| 6| |10| |30.36| 0.00| 32| 21| 64|29| 5| 15| |30.30| 0.00| 35| 23| 61|24| 5| 7| |30.26| 0.00| 41| 30| 63|22| 4| 10| |13| |30.29| 0.00| 39| 22| 50|29| 6| 17| |30.24| 0.00| 48| 27| 44|22| 4| 10| |30.20| 0.00| 53| 32| 45|29| 5| 11| |16| |30.23| 0.00| 43| 21| 42|29| 5| 13| |30.23| 0.00| 51| 28| 41|22| 0| 7| |30.19| 0.00| 57| 29| 33|29| 5| 15| |19| |30.24| 0.00| 36| 21| 54|24| 0| 4| |30.25| 0.00| 42| 27| 54|00| 0| 0| |30.23| 0.00| 47| 29| 49|00| 0| 0| |22| |30.25| 0.00| 32| 20| 62|24| 0| 5| |30.26| 0.00| 38| 27| 64|22| 0| 5| |30.23| 0.00| 41| 28| 60|29| 0| 5| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | JAN 16 | JAN 17 | JAN 18 | | | | | |01| |30.23| 0.00| 38| 27| 63|29| 0| 5| |30.11| 0.00| 45| 38| 76|00| 0| 0| |29.57| 0.00| 47| 44| 91|29| 10| 22| |04| |30.25| 0.00| 35| 28| 74|09| 0| 5| |30.03| 0.00| 46| 39| 75|18| 0| 7| |29.66| 0.00| 44| 41| 90|29| 10| 24| |07| |30.25| 0.00| 33| 27| 79|00| 0| 0| |29.92| 0.06| 46| 43| 90|15| 4| 10| |29.75| 0.00| 43| 39| 87|00| 7| 21| |10| |30.30| 0.00| 44| 35| 72|13| 0| 6| |29.77| 0.12| 52| 50| 94|13| 6| 16| |29.84| 0.00| 45| 39| 79|00| 13| 26| |13| |30.22| 0.00| 55| 39| 55|09| 4| 10| |29.62| 0.00| 61| 60| 95|18| 4| 15| |29.85| 0.00| 51| 41| 70|00| 11| 21| |16| |30.19| 0.00| 58| 42| 56|02| 0| 5| |29.52| 0.00| 65| 63| 93|20| 0| 12| |29.88| 0.00| 54| 42| 64|00| 7| 18| |19| |30.20| 0.00| 49| 39| 68|18| 0| 6| |29.51| 0.41| 58| 56| 93|29| 7| 23| |29.96| 0.00| 46| 40| 80|00| 0| 0| |22| |30.18| 0.00| 45| 38| 75|18| 0| 5| |29.56| 0.03| 52| 50| 93|29| 7| 18| |29.97| 0.00| 41| 38| 87|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+
MAXIMUM SHORT DURATION PRECIPITATION
+------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Time Period (minutes) | 5 | 10 | 15 | 20 | 30 | 45 | 60 | 80 | 100 | 120 | 150 | 180 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Precipitation | 0.06 | 0.12 | 0.17 | 0.23 | 0.34 | 0.51 | 0.67 | 0.79 | 0.91 | 1.03 | 1.13 | 1.23 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Date | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ | Ended: Time | 0804 | 0809 | 0814 | 0819 | 0829 | 0845 | 0900 | 0919 | 0938 | 0956 | 0956 | 0958 | +------------------------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+-------+ 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
January 2010: 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 | +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | JAN 19 | JAN 20 | JAN 21 | | | | | |01| |29.96| 0.00| 39| 36| 89|00| 0| 0| |29.88| 0.00| 48| 41| 76|29| 0| 6| |30.06| 0.02| 36| 34| 90|09| 7| 18| |04| |29.96| 0.00| 39| 37| 91|22| 0| 6| |29.87| 0.00| 42| 38| 84|29| 0| 6| |30.09| 0.02| 36| 33| 89|09| 6| 18| |07| |29.96| 0.00| 40| 38| 91|24| 4| 11| |29.91| 0.00| 42| 38| 85|09| 4| 10| |30.12| 0.00| 37| 33| 87|09| 7| 18| |10| |29.98| 0.00| 47| 43| 87|24| 6| 15| |29.98| 0.00| 43| 37| 79|09| 10| 20| |30.16| 0.00| 39| 33| 78|09| 10| 20| |13| |29.90| 0.00| 59| 45| 60|29| 6| 18| |29.95| 0.00| 43| 32| 63|04| 10| 20| |30.08| 0.00| 42| 36| 78|09| 11| 23| |16| |29.88| 0.00| 61| 44| 54|29| 7| 17| |29.96| 0.00| 42| 31| 64|09| 7| 17| |30.04| 0.00| 42| 38| 84|09| 10| 20| |19| |29.89| 0.00| 52| 43| 70|00| 0| 0| |29.99| 0.01| 39| 34| 82|09| 7| 17| |29.99| 0.06| 41| 38| 90|09| 10| 22| |22| |29.89| 0.00| 48| 41| 75|29| 0| 4| |30.06| 0.03| 37| 33| 88|09| 6| 16| |29.90| 0.04| 42| 41| 94|09| 11| 22| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | JAN 22 | JAN 23 | JAN 24 | | | | | |01| |29.77| 0.04| 44| 43| 95|09| 12| 27| |30.06| 0.00| 35| 29| 77|02| 4| 10| |30.16| 0.00| 40| 36| 86|11| 0| 6| |04| |29.68| 0.02| 44| 42| 95|09| 13| 27| |30.09| 0.00| 34| 30| 83|04| 4| 10| |30.13| 0.00| 40| 37| 88|11| 0| 5| |07| |29.72| 0.00| 42| 41| 95|04| 7| 16| |30.13| 0.00| 35| 30| 81|09| 5| 16| |30.09| 0.00| 45| 43| 91|18| 0| 14| |10| |29.79| 0.01| 42| 41| 95|04| 7| 16| |30.22| 0.00| 40| 34| 80|09| 11| 21| |30.04| 0.00| 54| 49| 83|18| 4| 15| |13| |29.79| 0.01| 40| 39| 95|04| 11| 22| |30.20| 0.00| 43| 36| 75|09| 7| 18| |29.94| 0.00| 65| 55| 72|20| 6| 21| |16| |29.86| 0.00| 40| 37| 88|04| 11| 20| |30.21| 0.00| 41| 34| 76|09| 7| 15| |29.89| 0.00| 64| 56| 75|15| 6| 21| |19| |29.95| 0.00| 40| 35| 82|04| 7| 20| |30.22| 0.00| 39| 34| 82|09| 5| 12| |29.85| 0.00| 59| 54| 84|15| 5| 16| |22| |30.02| 0.00| 38| 32| 79|04| 7| 17| |30.21| 0.00| 39| 35| 84|09| 0| 7| |29.79| 0.00| 60| 56| 87|15| 5| 20| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | JAN 25 | JAN 26 | JAN 27 | | | | | |01| |29.67| 0.00| 61| 57| 87|15| 7| 24| |29.61| 0.00| 48| 35| 59|24| 10| 25| |30.00| 0.00| 39| 26| 60|24| 7| 21| |04| |29.54| 0.00| 63| 59| 86|15| 7| 30| |29.72| 0.00| 44| 27| 51|24| 13| 30| |30.06| 0.00| 34| 26| 71|24| 4| 11| |07| |29.43| 0.13| 63| 60| 93|15| 12| 33| |29.77| 0.00| 39| 26| 60|24| 6| 21| |30.11| 0.00| 31| 24| 75|24| 0| 6| |10| |29.45| 0.37| 60| 59| 94|20| 13| 31| |29.83| 0.00| 44| 28| 53|24| 10| 22| |30.22| 0.00| 38| 25| 59|31| 5| 15| |13| |29.37| 0.00| 57| 55| 93|20| 11| 21| |29.77| 0.00| 49| 30| 47|20| 12| 27| |30.18| 0.00| 45| 27| 50|24| 6| 22| |16| |29.41| 0.00| 61| 50| 68|20| 12| 25| |29.80| 0.00| 49| 29| 46|24| 11| 24| |30.18| 0.00| 46| 29| 51|20| 7| 19| |19| |29.47| 0.00| 54| 47| 77|20| 4| 11| |29.89| 0.00| 46| 27| 48|24| 7| 20| |30.23| 0.00| 41| 29| 62|24| 0| 4| |22| |29.52| 0.00| 54| 42| 65|20| 12| 22| |29.95| 0.00| 43| 26| 51|24| 10| 21| |30.24| 0.00| 36| 29| 73|00| 0| 0| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | JAN 28 | JAN 29 | JAN 30 | | | | | |01| |30.22| 0.00| 33| 27| 77|00| 0| 0| |30.21| 0.00| 36| 22| 57|04| 14| 26| |30.28| 0.00| 29| 14| 52|04| 11| 21| |04| |30.21| 0.00| 32| 27| 80|24| 0| 6| |30.28| 0.00| 32| 15| 51|04| 11| 21| |30.22| 0.05| 25| 21| 83|04| 7| 29| |07| |30.17| 0.00| 35| 27| 73|18| 4| 7| |30.33| 0.00| 28| 13| 53|04| 10| 21| |30.18| 0.07| 24| 21| 87|04| 7| 19| |10| |30.16| 0.00| 44| 31| 61|20| 10| 18| |30.38| 0.00| 30| 13| 50|04| 12| 20| |30.08| 0.11| 26| 23| 87|04| 12| 23| |13| |30.02| 0.00| 56| 36| 46|20| 12| 26| |30.33| 0.00| 31| 12| 46|04| 7| 21| |29.95| 0.08| 27| 23| 87|04| 13| 28| |16| |29.97| 0.00| 58| 36| 44|24| 12| 27| |30.32| 0.00| 33| 14| 46|00| 5| 15| |29.90| 0.07| 26| 23| 86|04| 15| 30| |19| |30.03| 0.00| 50| 34| 53|22| 0| 7| |30.33| 0.00| 32| 16| 52|04| 4| 13| |29.88| 0.00| 25| 21| 85|04| 14| 29| |22| |30.09| 0.00| 48| 29| 48|31| 4| 16| |30.31| 0.00| 31| 13| 48|02| 7| 16| |29.90| 0.00| 23| 20| 86|00| 14| 30| +--+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+----+-----+-----+---+---+---+--+---+---+ | JAN 31 | | | | | | | |01| |29.93| 0.01| 21| 18| 85|00| 14| 32| | | |04| |29.99| 0.00| 21| 17| 83|33| 12| 22| | | |07| |30.10| 0.00| 20| 15| 79|33| 12| 24| | | |10| |30.18| 0.00| 23| 14| 66|00| 12| 23| | | |13| |30.20| 0.00| 28| 13| 52|31| 10| 19| | | |16| |30.21| 0.00| 31| 11| 44|31| 5| 15| | | |19| |30.23| 0.00| 26| 16| 66|00| 0| 0| | | |22| |30.25| 0.00| 22| 15| 74|00| 0| 0| | | +--+----+-----+-----+---+---+---+--+---+---+---------------------------------------+---------------------------------------+
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| |30.011| 34| 25| 71| 6.4| 01 | 3.6| |04| |30.016| 33| 25| 75| 5.8| 35 | 2.9| |07| |30.039| 32| 25| 77| 5.6| 36 | 2.1| |10| |30.067| 36| 27| 70| 8.8| 35 | 3.1| |13| |30.009| 41| 28| 60| 8.9| 34 | 3.2| |16| |30.000| 43| 27| 55| 7.8| 33 | 3.1| |19| |30.030| 38| 26| 64| 3.9| 00 | 1.5| |22| |30.043| 36| 26| 68| 4.0| 33 | 1.2| +--+----+------+---+---+---+-----+----+----+
HOURLY PRECIPITATION (Water Equivalent)
January 2010: 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| | | | | | | | | | | | | | | | | | | | |0.05|01 02| | | | | | | | | | | | | | | | | | | | | | | | |02 03| | | | | | | | | | | | | | | | | | | | | | | | |03 04| | | | | | | | | | | | | | | | | | | | | | | | |04 05| | | | | | | | | | | | | | | | | | | | | | | | |05 | | | | | | | | | | | | | | | | | | | | | | | | | 06| | | | | | | | | | | | | | | | | | | | | | | | |06 07| | | | | | | | | | | | | | | | | | | | | | | | |07 08| | | | |0.02|0.01|0.02| | | | | | | | | | | | | | | | | |08 09| | | | | | | | | | | | | | | | | | | | | | | | |09 10| | | | | | | | | | | | | | | | | | | | | | | | |10 | | | | | | | | | | | | | | | | | | | | | | | | | 11| | | | | | | | | | | | | | | | | | | | | | | | |11 12| | | | | | | | | | | | | | | | | | | | | | | | |12 13| | | | | | | | | | | | | | | | | | | | | | | | |13 14| | | | | | | | | | | | | | | | | | | | | | | | |14 15| | | | | | | | | | | | | | | | | | | | | | | | |15 | | | | | | | | | | | | | | | | | | | | | | | | | 16| | | | | | | | | | | | | | | | | | | | | | | | |16 17| | | | | | |0.03|0.06|0.11|0.18|0.12|0.04|0.02| | | | | | |0.41| |0.02|0.03| |17 18| | | | | | | | | | | | | | | | | | | | | | | | |18 19| | | | | | | | | | | | | | | | | | | | | | | | |19 20| | | | | | | | | | | | | | | | | | | |0.01|0.01|0.02|0.03|0.06|20 | | | | | | | | | | | | | | | | | | | | | | | | | 21| |0.02|0.01| |0.02| | | | | | | | | | | | |0.04|0.06|0.06|0.10|0.04|0.04|0.07|21 22| |0.04|0.03|0.08|0.02| | | | | |0.01| | |0.01|0.01| | | | | | | | | |22 23| | | | | | | | | | | | | | | | | | | | | | | | |23 24| | | | | | | | | | | | | | | | | | | | | | | | |24 25| | | | | |0.02|0.03|0.13|0.20|0.66|0.37| | | | | | | | | | | | | |25 | | | | | | | | | | | | | | | | | | | | | | | | | 26| | | | | | | | | | | | | | | | | | | | | | | | |26 27| | | | | | | | | | | | | | | | | | | | | | | | |27 28| | | | | | | | | | | | | | | | | | | | | | | | |28 29| | | | | | | | | | | | | | | | | | | | | | | | |29 30| | | |0.05|0.05|0.05|0.05|0.07|0.08|0.05|0.11|0.11|0.17|0.08|0.08|0.16|0.07|0.02| | | | | | |30 31| |0.01|0.03|0.01| | | | | | | | | | | | | | | | | | | | |31 ---+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+--- Sum| |0.07|0.08|0.14|0.11|0.08|0.13|0.26|0.39|0.89|0.61|0.15|0.19|0.09|0.09|0.16|0.07|0.06|0.06|0.48|0.11|0.08|0.10|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.)