June & Yearly 1999
Graphs follow the text summary!
THU, JULY 1, 1999 5:30 PM EDT
-------------------------------------------------------------------
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 June 1999.
Time is EDT.
-----------------------------------------------------------------------------
D HT DN LT DN MT DN HDD CDD PREC WD WS WAS SC WXR TYPE/REMARKS
-----------------------------------------------------------------------------
1 87 +3 66 +2 76.5 +2 11.5 S 16 S4.9 -PC
2 88 +5 67 +4 77.5 +4 12.5 S 20 SSW5.9 SU
3 86 +4 71 +8 78.5 +6 13.5 W 21 W5.1 PC DST LTG H FROPA
4 77 -3 65 +2 71.0 -1 6.0 NNE22 NNE5.2 PC BREEZY (AM) COOLER
5 77 -4 58 -5 67.5 -4 2.5 NE 16 NE3.0 PC -BR(AM)
6 85 +3 63 -1 74.0 +1 9.0 NNE15 NE2.5 PC HUMID
7 92 +9 66 +1 79.0 +5 14.0 W 15 S4.0 SU -BR(AM) HZ HOT
8*95 +9 71 +6 83.0 +7 18.0 NE 13 S4.3 SU HZ HOT
*STATION MAXIMUM TEMP RECORD TIED
9 93 +10 74 +8 83.5 +9 18.5 NNE15 NNE3.1 SU HZ HOT
10 79 -4 68 +3 73.5 -1 8.5 NNE19 NE4.6 PC COOLER
11 73 -9 64 +1 68.5 -4 3.5 NNE20 NNE5.6 PC PLEASANT
12*70 -14 63 -1 66.5 -8 1.5 .04 NNE17 NNE5.5 C DZ -RA BR COOL
*NEW STATION MINIMUM HIGH TEMPERATURE RECORD
13 77 -6 67 +2 72.0 -2 7.0 .22 N 12 N3.4 PC SHRA BR
14 90 +5 67 +3 78.5 +4 13.5 S 18 S4.5 PC BR H
15 78 -8 67 +1 72.5 -4 7.5*1.17 NNE15 NNE4.6 C SHRA BR FROPA HUMID
*NEW STATION DAILY PRECIP RECORD
16*69 -16 63 -4 66.0 -10 1.0* .55 NNE20 NNE4.0 C BR SHRA DZ
*NEW STATION DAILY PRECIP RECORD
*NEW STATION MINIMUM HIGH TEMPERATURE RECORD
17*67 -17 63 -4 65.0 -10 .55 NNE18 NNE4.7 C BR RA DZ
*NEW STATION MINIMUM HIGH TEMPERATURE RECORD
18*70 -16 61 -6 65.5 -11 0.5 .03 N 19 N 4.7 PC -SHRA
*NEW STATION MINIMUM HIGH TEMPERATURE RECORD
19 73 -12 *57 -11 65.0 -12 NE 21 NE 4.6 PC
*NEW STATION MINIMUM LOW TEMPERATURE RECORD
20*69 -17 65 -4 67.0 -10 2.0 .71 NE 19 NNE5.0 C SHRA BR DZ
*NEW STATION MINIMUM HIGH TEMPERATURE RECORD
21*70 -16 66 -1 68.0 -9 3.0 .02 N 21 N 5.4 C DZ BR -SHRA
*NEW STATION MINIMUM HIGH TEMPERATURE RECORD
22*73 -13 63 -5 68.0 -9 3.0 .04 NNE19 NNE5.7 PC DZ -RA BR
*NEW STATION MINIMUM HIGH TEMPERATURE RECORD
23 78 -8 57 -10 67.5 -9 2.5 NE 18 NNE2.8 PC
24 83 -2 61 -6 72.0 -4 7.0 SSE12 SE 2.4 -PC HUMID
25 86 +1 68 +1 77.0 +1 12.0 SSW14 S 3.1 PC +BR(AM) HUMID
26 90 +4 70 +2 80.0 +3 15.0 S 14 S 2.9 PC HUMID
27 90 +3 75 +6 82.5 +4 17.5 S 14 S 4.7 PC -BR-HZ HUMID
28 88 0 *75 +7 81.5 +4 16.5 S 17 SSW5.3 PC -BR-HZ HUMID
*NEW STATION MAXIMUM LOW TEMPERATURE RECORD
29 91 +3 *77 +9 84.0 +6 19.0 SSW17 S 5.7 PC HZ HOT HUMID
*NEW STATION MAXIMUM LOW TEMPERATURE RECORD
30 85 -2 *76 +7 80.5 +2 15.5 .11 SSW19 S 4.7 PC HZ HUMID SHRA
*NEW STATION MAXIMUM LOW TEMPERATURE RECORD
------------------------------------------------------------------------------
SUMMARY OF JUNE 1999:
TEMPERATURE:
Monthly mean: High = 81.0 Low = 66.5 Mean = 73.7
Departure < Normal: High = -3.8 Low = +0.6 Mean = -1.6
Degree Days: Heating = 0.0 Cooling = 261.5
Num er of Days Using: Heating = 0 Cooling = 28
Days with maximum temperature >= 90: 7
Days with maximum temperature <= 32: 0
Days with minimum temperature <= 32: 0
Days with minimum temperature <= 0: 0
PRECIPITATION:
Total month = 3.44" Departure from Normal = - 0.08"
Normal month (to date) = 3.52" or 98%
Average daily = 0.11"
Normal daily = 0.12"
Number of days with measurable precipitation = 10
Year-to-date = 18.15" Departure = - 4.69" or 79% of normal
Maximum for June = 7.56" in 1978 --> (Since
Minimum for June = 0.94" in 1980 --> (1977)
Number of days with 0.01" or more: 10 Snowfall
Number of days with 0.10" or more: 6 June total = 0.00"
Number of days with 0.50" or more: 4
Number of days with 1.00" or more: 1 June max = 0.0"
DAILY EXTREMES: Low temperature = 57 on the 19th, 23rd
High temperature = 95 on the 8th
Maximum daily precipitation = 1.17" on the 15th
Maximum 24-hour rainfall = 1.50" on the 15th-16TH (3pm-3pm)
Maximum barometric pressure = 30.317" on the 19th
Minimum barometric pressure = 29.672" on the 29th
Frozen precip = 0.00"
WIND:
Maximum wind gust = NNE 22 MPH on the 4th
Average wind speed and dominant direction = NNE 4.5 MPH
NUMBER OF:
Days Cloudy: 6 Days with thunderstorms: 0
Days Partly Cloudy: 20 # of Thunderstorms: 0
Days Clear/Sunny: 4 Days with some type of snowfall: 0
Days with Fog/Ground Fog: 14
Days with Dense Fog: 0
Days with Frost: 0
------------------------------------------------------------------
YEAR-TO-DATE: (through June 30th, 1999)
Temperatures Degree Days Precipitation
Mean maximum: 65.7 (+0.4) Heating: Aqueous: 18.15" (DEP -4.69") 79%
Mean minimum: 47.7 (+1.6) 1935.0 Maximum monthly: 3.44"/JUNE
Mean monthly: 56.7 (+1.0) Cooling: Minimum monthly: 2.14"/FEB.
440.5
Highest: 95, June 8
Snowfall: TRACE"
Lowest: 17, January 6 Maximum daily: TRACE" (Jan. 9,10 & Mar. 8)
Days with max temperature >= 90: 9 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: 61 or 33.70%
Days using Heating: 120
Days using Cooling: 59 Days with thunderstorms: 11
Days Cloudy: 51 Number of thunderstorms: 12
Days Partly Cloudy: 98
Days Clear/Sunny: 32 Greatest 24-hour daily rainfall:
Days with fog/ground fog: 71 1.39"/April 11th, 1999
Days with dense fog: 3
Wind (Highest Gust): SSW 54 miles per hour, March 3rd
Barometer: Highest 30.807" on January 31st
Lowest: 29.370" on April 9th
------------------------------------------------------------------
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.
------------------------------------------------------------------
