March & Yearly 1999
Graphs follow the text summary!
SAT, APR 3, 1999 8:15 AM EST
-------------------------------------------------------------------
MONTHLY SUMMARY OF CLIMATOLOGICAL DATA - PORTSMOUTH, VIRGINIA
Portsmouth Weather Records Service
Portsmouth, Virginia 23702-2017
(3 miles south / West Cradock Section)
------------------------------------------------------------------
Monthly summary of Local Climatological Data for Portsmouth,
Virginia, West Cradock Section, during the month of March 1999.
Time is EST.
-----------------------------------------------------------------------------
D HT DN LT DN MT DN HDD CDD PREC WD WS WAS SC WXR TYPE/REMARKS
-----------------------------------------------------------------------------
1 52 -1 39 +4 45.5 +2 19.5 WSW32 W11.2 PC BREEZY COOLER
2 60 +4 34 -4 47.0 0 18.0 W23 W6.2 SU
3*74 +19 42 +5 58.0 +12 7.0 .05*S54 S11.3 PC FROPA SHRA
NEW STATION HIGH MAX TEMP / NEW STATION PEAK WIND GUST
4 51 -5 39 +2 45.0 -2 20.0 SW36 W12.4 SU BREEZY COLDER
5 49 -10 33 -7 41.0 -8 24.0 NNE17 NNE4.3 SU CHILLY
6 68 +12 36 -3 52.0 +4 13.0 .01 SSW30 SSW8.0 PC -SHRA DST LTG
7 57 0 31 -6 44.0 -3 21.0 N31 N11.3 SU FROPA(AM) COLD
8 39 -17 27 -10 33.0 -13 32.0 N23 N6.5 SU COLD
9 41 -14 30 -7 35.5 -10 29.5 .26 NE20 NE5.3 C S PE BR RA
TRACE S ACCUMULATION
10 38 -19 35 -1 36.5 -10 28.5 .02 NW22 N8.4 C -RA DZ BR FROPA
11 48 -10 32 -4 40.0 -7 25.0 N 24 N8.4 SU
12 52 -5 34 -4 43.0 -4 22.0 N 26 N9.6 SU
13 47 -14 35 -4 41.0 -9 24.0 N22 N5.9 -PC
14 61 +1 39 -1 50.0 0 15.0 1.34 N25 NE5.0 C -RA BR TSRA FROPA
15 44 -17 35 -5 39.5 -11 25.5 .52 NE22 N7.2 PC RA BR SHSN FROPA
16 58 0 31 -7 44.5 -4 20.5 SW21 SSW6.6 SU
17 76 +14 44 +5 60.0 +9 5.0 SSW20 SSW7.4 SU MILDER
18 78 +18 48 +7 63.0 +12 2.0 WSW34 WSW9.2 SU WARM FROPA (EVE)
19 58 -1 41 0 49.5 0 15.5 N20 N5.9 SU COOLER
20 57 -2 39 +2 48.0 0 17.0 N16 N5.5 PC COOL
21 62 +1 41 +1 51.5 +1 13.5 .27 NNW28 SE6.9 C SHRA BR FROPA
22 56 -3 41 +2 48.5 0 16.5 .30 W30 WSW8.2 PC RA (AM) BR
23 63 +3 38 0 50.5 +1 14.5 S16 SE3.7 PC
24 75 +13 52 +10 63.5 +11 1.5 T WSW23 SSW5.7 PC -SHRA
25 59 -2 47 +7 53.0 +2 12.0 .01 N19 N6.1 PC FROPA -SHRA
26*47 -14 42 0 44.5 -7 20.5 .02 NNE19 NNE10.4 C -RA SHPE
NEW STATION MINIMUM MAX TEMPERATURE
27*43 -21 37 -5 40.0 -13 25.0 .45 NNE23 N9.2 C -RA-PE-WETSN BR
NEW STATION MINIMUM MAX TEMPERATURE
28 57 -8 38 -7 47.5 -8 17.5 .04 NW19 W6.1 C -RA BR
29 70 0 43 -3 56.5 -2 8.5 N20 N4.3 SU
30 66 -3 43 -6 54.5 -4 10.5 NNE18 NNE4.5 SU
31 74 +7 41 -5 57.5 +1 7.5 S23 SSW7.1-PC
----------------------------------------------------------------------------
SUMMARY OF MARCH 1999:
TEMPERATURE:
Monthly mean: High = 57.4 Low = 38.3 Mean = 47.8
Departure < Normal: High = - 2.4 Low = - 1.4 Mean = - 2.0
Degree Days: Heating = 531.5 Cooling = 0.0
Number of Days Using: Heating = 31 Cooling = 0
Days with maximum temperature >= 90: 0
Days with maximum temperature <= 32: 0
Days with minimum temperature <= 32: 5
Days with minimum temperature <= 0: 0
PRECIPITATION:
Total month = 3.29" Departure from Normal = - 1.01"
Normal month (to date) = 4.30" or 76%
Average daily = 0.11"
Normal daily = 0.14"
Number of days with measurable precipitation = 12
Year-to-date = 8.47" Departure = - 3.42" or 71% of normal
Maximum for March = 10.96" in 1994 --> (Since
Minimum for March = 0.89" in 1986 --> (1977)
Number of days with 0.01" or more: 12 Snowfall
Number of days with 0.10" or more: 6 March total = TRACE
Number of days with 0.50" or more: 2
Number of days with 1.00" or more: 1 March max = 14.00" in 1980
DAILY EXTREMES: Low temperature = 27 on the 8th
High temperature = 78 on the 18th
Maximum daily precipitation = 1.34" on the 14th
Maximum 24-hour rainfall = 1.86" on the 14th-15th
Maximum barometric pressure = 30.706" on the 8th
Minimum barometric pressure = 29.391" on the 3rd
Frozen precip = TRACE
WIND:
Maximum wind gust = S 54 MPH on the 3rd
NUMBER OF:
Days Cloudy: 7 Days with thunderstorms: 1
Days Partly Cloudy: 11 # of Thunderstorms: 1
Days Clear/Sunny: 13 Days with some type of snowfall: 3
Days with Fog/Ground Fog: 8
Days with Dense Fog: 0
Days with Frost: 0
------------------------------------------------------------------
YEAR-TO-DATE: (through March 31st, 1999)
Temperatures Degree Days Precipitation
Mean maximum: 55.6 (+2.3) Heating: Aqueous: 8.47" (DEP -3.42") 71%
Mean minimum: 37.2 (+2.3) 1673.0 Maximum monthly: 3.29"/MAR.
Mean monthly: 46.4 (+2.3) Cooling: Minimum monthly: 2.14"/FEB.
1.5
Highest: 78, March 18
Snowfall: TRACE"
Lowest: 17, January 6 Maximum daily: TRACE" (Jan. 9,10 & Mar. 8)
Days with max temperature >= 90: 0 Maximum monthly: TRACE" (Jan. & Mar.)
Days with max temperature <= 32: 1
Days with min temperature <= 32: 21 Days with some type of
Days with temperature <= 0: 0 snowfall: 8
Days with measurable
Number of: precipitation: 27 or 30.0%
Days using Heating: 89
Days using Cooling: 1 Days with thunderstorms: 5
Days Cloudy: 17 Number of thunderstorms: 6
Days Partly Cloudy: 45
Days Clear/Sunny: 28 Greatest 24-hour daily rainfall:
Days with fog/ground fog: 31 1.34"/JAN. 24th & MAR. 14
Days with dense fog: 3
Wind (Highest Gust): SSW 54 miles per hour, March 3rd
Barometer: Highest 30.807" on January 31st
Lowest: 29.391" on March 3rd
------------------------------------------------------------------
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
------------------------------------------------------------------
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; *tied station record
------------------------------------------------------------------
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
------------------------------------------------------------------
NOTES: All temperatures are in degrees fahrenheit. All precipita-
tion measurements are in inches. All wind speeds are in miles per
hour.
------------------------------------------------------------------
Keyword Quick Links:
[ ACON ] [ Articles ] [ CAM: Portsmouth ] [ Daily Summary ] [ Database ][ Forecasts ]
[ Our Location ][ Miscellaneous - Local, State, National ][ Our IMAGES ]
[ Instrumentation ][ E-mail Us! ][ Marine Forecasts ][ NC Zones ][ News & Weather - CNN ]
[ OBS: Local 24-Hours ][ OBS: Local Manual ][ OBS: Virginia & National ]
[ Radars ][ Records: Local ][ Satellite: Mid-Atlantic ][ Severe Weather: VA ]
[ Surface Map - US ][ Sun ][ Synopses ][ Text Only PWRS ]
[ Tides: Hampton Roads, VA ][ Tropics ][ VA Products from WeatherNet ][ VA Zones ]