January & Year 1998
Graphs follow the text summary!
SUN, FEB 1, 1998 8:45 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 January 1998.
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 38 -13 24 -13 31.0 -13 34.0 NNE25 0.7W SU COLD
2 57 +7 31 -3 44.0 +2 21.0 W 22 4.4W SU MILDER(AFT)
3 65 +15 40 +7 52.5 +11 12.5 WSW30 5.3W SU MILDER(AFT)
4 68 +19 46 +12 57.0 +15 8.0 W 17 1.9WSW SU -BR(AM)
5 69 +21 44 +11 56.5 +16 8.5 SSE16 1.9SSE PC MILD -BR(AM)
6 75 +25 61 +28 68.0 +26 3.0 T SW 23 6.5SSW PC WARM -DZ-SHRA-BR
7 75 +23 64 +29 69.5 +26 4.5 T SW 29 11.2SSW C WARM -DZ-SHRA
8 75 +29 63 +30 69.0 +30 4.0 .07 W 40 15.2SW C -SHRA -BR
9 66 +20 48 +19 57.0 +19 8.0 SW 37 9.1SW PC FROPA COOLER
10 53 +8 39 +9 46.0 +8 19.0 ENE17 4.3NE -PC COLDER
11 56 +12 34 +6 45.0 +9 20.0 SSW12 3.4SW PC -BR(AM)
12 56 +9 36 +6 46.0 +7 19.0 ESE17 5.1SE PC BR -FU
13 59 +12 46 +14 52.5 +13 12.5 .19 ENE26 6.6S PC -RA BR FROPA
14 46 -3 35 +5 40.5 +1 24.5 NE 32 5.6ENE PC -FU COLD
15 57 +10 40 +9 48.5 +9 16.5 .93 SSE21 2.6E C BR RA FROPA
16 48 +2 38 +10 43.0 +6 22.0 1.35 N 30 5.8N C RA BR DZ TSRA
FROPA
17 43 -5 37 +9 40.0 +2 25.0 .03 N 20 2.7N C BR-RA(EVE)FROPA
18 45 -4 34 +2 39.5 -1 25.5 N 21 3.0N PC -FR(EVE)
19 41 -3 34 +4 37.5 0 27.5 .18 NE 15 0.8N C -RA BR FROPA
20 43 -3 35 +7 39.0 +2 26.0 .01 N 24 2.3N PC -SHRA(AM) COLDER
-BR BREEZY
21 44 -1 32 +3 38.0 +1 27.0 N 12 0.0NNE SU COLDER
22 47 0 32 +3 39.5 +1 25.5 SSE13 0.0SE C
23 61 +11 45 +14 53.0 +12 12.0 .83 S 26 7.8SW C BR RA FROPA
24 52 -1 39 +6 45.5 +3 19.5 .06 N 25 4.0E C -RA BR FROPA
25 46 -4 34 +1 40.0 -2 25.0 N 33 4.4N PC BREEZY -FR(EVE)
26 49 +1 30 +1 39.5 +1 25.5 SE 18 1.5ESE -PC FR(AM)
27 56 +8 40 +9 48.0 +8 17.0 1.36 SE 53 5.3SE C RA BR N'OREASTER
28 55 +7 39 +8 47.0 +7 18.0 .74 ENE39 6.5N C RA BR N'OREASTER
29 55 +7 37 +8 46.0 +7 19.0 N 24 3.9N PC
30 51 +2 39 +8 45.0 +5 20.0 NE 22 3.0N PC
31 44 -5 31 -1 37.5 -3 27.5 N 22 4.1N PC COLDER -FR(EVE)
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SUMMARY OF JANUARY 1998:
TEMPERATURE:
Monthly mean: High = 54.7 Low = 39.6 Mean = 47.1
Departure < Normal: High = + 6.6 Low = + 8.4 Mean = + 7.4
Degree Days: Heating = 565.5 Cooling = 11.5
Number of Days Using: Heating = 28 Cooling = 3
Days with maximum temperature >= 90: 0
Days with maximum temperature <= 32: 0
Days with minimum temperature <= 32: 6
Days with minimum temperature <= 0: 0
PRECIPITATION:
Total month = 5.75" Departure from Normal = + 1.60"
Normal month (to date) 4.15" or 139%
Average daily = 0.19"
Normal daily = 0.13"
Number of days with measurable precipitation = 11
Year-to-date = 5.75" Departure = + 1.60" or 139% of normal
Maximum for January = 11.12" in 1987 --> (Since
Minimum for January = 1.07" in 1981 --> 1977)
Number of days with 0.01" or more: 11 Snowfall
Number of days with 0.10" or more: 7 January total = 0.00"
Number of days with 0.50" or more: 5 January max = 8.9" in
Number of days with 1.00" or more: 2 1980
DAILY EXTREMES: Low temperature = 24 on the 1st
High temperature = 75 on the 6th, 7th, 8th
Maximum daily precipitation = 1.36" on the 27th
Maximum 24-hour rainfall = 1.46" from the 27th - 28th
Maximum wind gust = SE 53 mph on the 27th
Maximum barometric pressure = 30.667" on the 1st
Minimum barometric pressure = 29.371" on the 28th
NUMBER OF:
Days Cloudy: 10 Days with thunderstorms: 1
Days Partly Cloudy: 16 # of Thunderstorms: 1
Days Clear/Sunny: 5 Days with some type of snowfall: 0
Days with Fog/Ground Fog: 16
Days with Dense Fog: 0
Days with Frost: 4
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YEAR-TO-DATE: (through January 31st, 1998)
Temperatures Degree Days Precipitation
Mean maximum: 54.7 (+6.6) Heating: Aqueous: 5.75" (DEP +1.60") 139%
Mean minimum: 39.6 (+8.4) 565.5 Maximum monthly: 5.75"/JAN.
Mean monthly: 47.1 (+7.4) Cooling: Minimum monthly: 5.75"/JAN.
11.5
Highest: 75, January 6,7,8
Snowfall: 0.00"
Lowest: 24, January 1 Maximum daily: 0.00"
Days with max temperature >= 90: 0 Maximum monthly: 0.00"
Days with max temperature <= 32: 0
Days with min temperature <= 32: 6 Days with some type of
Days with temperature <= 0: 0 snowfall: 0
Days with measurable
Number of: precipitation: 11 or 35.48%
Days using Heating: 28
Days using Cooling: 3 Days with thunderstorms: 1
Days Cloudy: 10 Number of thunderstorms: 1
Days Partly Cloudy: 16
Days Clear/Sunny: 5 Greatest 24-hour period
Days with fog/ground fog: 16 rainfall: 1.46"/JAN. 27th-28th
Wind (Highest Gust): SE 53 miles per hour, January 27th
Barometer: Highest 30.667" on January 1st
Lowest: 29.371" on January 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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