February & Yearly 1999
Graphs follow the text summary!
MON, MAR 1, 1999 6:55 AM EST
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MONTHLY SUMMARY OF CLIMATOLOGICAL DATA - PORTSMOUTH, VIRGINIA
Portsmouth Weather Records Service
Portsmouth, Virginia 23702-2017
(3 miles south / West Cradock Section)
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Monthly summary of Local Climatological Data for Portsmouth,
Virginia, West Cradock Section, during the month of February 1999.
Time is EST.
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D HT DN LT DN MT DN HDD CDD PREC WD WS WAS SC WXR TYPE/REMARKS
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1 56 +5 35 +4 45.5 +5 19.5 .02 NNE16 SE5.3 PC-BR SHRA
2 66 +14 51 +17 58.5 +15 6.5 .15 SSW18 S6.5 PC-BR SHRA FROPA
3 54 +2 45 +12 49.5 +7 15.5 WSW18 WSW6.0 PC BR
4 59 +9 45 +12 52.0 +10 13.0 .10 NW33 S6.7 PC BR SHRA TSRA FROPA
5 51 +5 38 +8 44.5 +7 20.5 N 21 N5.0 PC -BR
6 62 +17 36 +7 49.0 +12 16.0 T SSW24 SSW5.4 PC -SHRA
7 61 +16 41 +12 51.0 +14 14.0 .02 SSW20 SE4.1 PC -BR -SHRA
8 53 +7 36 +6 44.5 +7 20.5 N24 N5.7 PC FROPA -BR
9 62 +13 31 +3 46.5 +8 18.5 S18 NNE4.7 PC FROST(AM) GF(AM)
10 58 +9 39 +10 48.5 +10 16.5 N17 NNE3.0 PC -BR(AM)
11 64 +12 34 +3 49.0 +8 16.0 S14 S3.6 SU FROST(AM)
12*72 +23 43 +12 57.5 +18 7.5 .29 S32 S9.8 PC SHRA TSRA FROP MILD
NEW STATION MAX TEMPERATURE RECORD
13 48 +2 31 +2 39.5 +2 25.5 N26 N8.1 PC FROPA BLUSTERY COLD
14 41 -11 29 -4 35.0 -8 30.0 N31 N7.9 PC BLUSTERY AM
15 54 +1 27 -7 40.5 -3 24.5 W16 W2.7 SU --FROST MILDER AFT
16 65 +13 36 +2 50.5 +7 14.5 SSW20 SSW6.3-PC
17 69 +18 47 +13 58.0 +15 7.0 SW23 SSW6.7-PC -BR(AM)
18 60 +8 43 +9 51.5 +8 13.5 1.05 NNE25 N7.5 C FROPA BR RA COLDER
19 44 -11 39 +2 41.5 -4 23.5 T NNE21 NNE7.3 PC -SHRA(PM)
20 44 -10 38 +1 41.0 -5 24.0 T N27 N7.4 PC -SHRA(AM) FROPA
21*39 -19 31 -5 35.0 -12 30.0 N25 N9.0 SU BREEZY COLD
NEW STATION MIN MAX TEMP
22*34 -25 26 -12 30.0 -18 35.0 N28 N9.7 SU BREEZY VERY COLD
NEW STATION MIN MAX TEMP
23*36 -21 25 -15 30.5 -18 34.5 T NNE14 NE4.7 PC -SHSN COLD
NEW STATION MIN MAX TEMP
24 38 -17 34 -4 36.0 -10 29.0 T NNE23 N9.0 C SHSN FROPA -BR
25 46 -5 35 0 40.5 -3 24.5 .14 N17 N5.3 C -RA BR FROPA
26 48 -2 34 0 41.0 -1 24.0 NW21 N5.0 SU FROST(AM)
27 60 +6 31 -4 45.5 +1 19.5 SW15 NNE3.3 PC FROST(AM) MILDER
28 65 +10 48 +12 56.5 +11 8.5 .37 S36 S7.5 C TSRA -GR BR FROPA
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SUMMARY OF FEBRUARY 1999:
TEMPERATURE:
Monthly mean: High = 53.9 Low = 36.7 Mean = 45.3
Departure < Normal: High = + 2.5 Low = + 3.4 Mean = + 2.9
Degree Days: Heating = 551.5 Cooling = 0.0
Num er of Days Using: Heating = 28 Cooling = 0
Days with maximum temperature >= 90: 0
Days with maximum temperature <= 32: 0
Days with minimum temperature <= 32: 8
Days with minimum temperature <= 0: 0
PRECIPITATION:
Total month = 2.14" Departure from Normal = -1.35"
Normal month (to date) = 3.49" or 61%
Average daily = 0.08"
Normal daily = 0.12"
Number of days with measurable precipitation = 8
Year-to-date = 5.18" Departure = - 2.41" or 68% of normal
Maximum for February = 7.60" in 1998 --> (Since
Minimum for February = 1.20" in 1991 --> (1977)
Number of days with 0.01" or more: 8 Snowfall
Number of days with 0.10" or more: 6 February total = 0.0"
Number of days with 0.50" or more: 1
Number of days with 1.00" or more: 1 February max = 21.00" in 1989
DAILY EXTREMES: Low temperature = 25 on the 23rd
High temperature = 72 on the 12th
Maximum daily precipitation = 1.05" on the 18th
Maximum 24-hour rainfall = 1.05" on the 18th
Maximum barometric pressure = 30.696" on the 1st
Minimum barometric pressure = 29.402" on the 28th
Frozen precip = 0.0"
WIND:
Maximum wind gust = S 36 MPH on the 28th
NUMBER OF:
Days Cloudy: 4 Days with thunderstorms: 3
Days Partly Cloudy: 19 # of Thunderstorms: 3
Days Clear/Sunny: 5 Days with some type of snowfall: 2
Days with Fog/Ground Fog: 13
Days with Dense Fog: 0
Days with Frost: 5
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YEAR-TO-DATE: (through February 28th, 1999)
Temperatures Degree Days Precipitation
Mean maximum: 54.6 (+4.7) Heating: Aqueous: 5.18" (DEP -2.41") 68%
Mean minimum: 36.7 (+4.4) 1141.5 Maximum monthly: 3.04"/JAN.
Mean monthly: 45.7 (+4.6) Cooling: Minimum monthly: 2.14"/FEB.
1.5
Highest: 74, January 23
Snowfall: TRACE"
Lowest: 17, January 6 Maximum daily: TRACE" (Jan. 9,10)
Days with max temperature >= 90: 0 Maximum monthly: TRACE" (Jan. 9,10)
Days with max temperature <= 32: 1
Days with min temperature <= 32: 16 Days with some type of
Days with temperature <= 0: 0 snowfall: 5
Days with measurable
Number of: precipitation: 15 or 25.4%
Days using Heating: 58
Days using Cooling: 1 Days with thunderstorms: 4
Days Cloudy: 10 Number of thunderstorms: 5
Days Partly Cloudy: 34
Days Clear/Sunny: 15 Greatest 24-hour daily rainfall:
Days with fog/ground fog: 23 1.34"/JAN. 24th
Days with dense fog: 3
Wind (Highest Gust): S 40 miles per hour, January 3rd
Barometer: Highest 30.807" on January 31st
Lowest: 29.402" on February 28th
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METAR DENOTATIONS:
BC Patches
BL Blowing
BR Fog with visibilites > 5/8 but <=6 statute miles and below
to 5/8 mile
DU Dust (widespread)
DS Duststorm
DZ Drizzle
FC Funnel Cloud
FC+ Tornado/waterspout
FG Fog with visibility <= 5/8 statute miles
FU Smoke
FZDZ Freezing drizzle
FZRA Freezing rain
FZFG Freezing fog
GR Hail
GS Small hail
HZ Haze
IC Ice crystals
PE Ice pellets
PY Spray
RA Rain
SA Sand
SS Sandstorm
PO Sand or dust whirls
SG Snow granules
SH Shower
SHRA Shower of rain
SHSN Shower of snow
SHPE Shower of ice pellets
SHGR Shower with hail
SHGS Shower with small hail
SM Statute miles
SN Snow
SQ Squalls
TS Thunderstorm
TSGR Thunderstorm with hail
TSGS Thunderstorm with small hail
TSPE Thunderstorm with ice pellets
TSRA Thunderstorm with rain
TSSN Thunderstorm with snow
UP Unknown precipitation
VA Volcanic ash
VC Vicinity
VV Used for obscurred sky
METAR Qualifiers: (now placed in FRONT of code)
- Light
+ Heavy
DR Low drifting
M Below (as in -x.x degrees)
MI Shallow
PR Partial
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PWRS DENOTATIONS: SU/CL = Clear sky; PC = Partly cloudy sky; C =
cloudy sky; NA, not available; NR, not recorded; TEMP, temperature;
MAX, maximum; MIN, minimum; T, trace of precipitation; INOP,
inoperative equipment; MPH, miles per hour; DN, departure from normal;
DEP, departure; YR, year; NORM, normal; DST LTG, distant lightning;
FROP or FROPA, frontal passage; AM morning; AFT afternoon hours;
EVE evening hours; PM evening hours; E estimated;
VBL, variable wind directions; TS, tropical storm; *New/tied record
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COLUMN DENOTATIONS:
D Date PREC Precipitation
HT High Temperature WS Maximum Wind Speed (Gust)
LT Low Temperature WD Direction of Maximum Wind Gust
MT Mean Temperature WAS Average Wind Speed & Dominant
Direction
HB High Barometer Reading (Inches)
DN Departure from Normal LB Low Barometer Reading (Inches)
SC Dominant Daily Sky Cover
HDD Heating Degree Days WXR TYPES Observed Weather
CDD Cooling Degree Days Conditions and Remarks
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NOTES: All temperatures are in degrees fahrenheit. All precipita-
tion measurements are in inches. All wind speeds are in miles per
hour.
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