Portsmouth Weather Records Service
 

Local Climatological Data
*Data Are Subject to Correction by PWRS

 Station:  PORTSMOUTH, VIRGINIA
Month:   SEPTEMBER Year: 2002
Latitude: 36° 81' N    Longitude: 76° 33' W
Station Elevation: 20 FT 
Standard Time: EASTERN DAYLIGHT SAVINGS TIME

 
 
Temperature
Degree Days
Precipitation
 Wind
 Sky
Weather
Date
Max
Min
Mn
Dep
HDD
CDD
Total
Snow
Depth
Avg
Dir
GUST
  
Types
1
76
68
72.0
-4
 
7.0
0.55
0.0
0.0
3.4
N
NNE 12
C
SHRA DZ BR
2
73
66
69.5
-6
 
4.5
 
0.0
0.0
3.6
N
N 15
PC
BR
3
85
63
74.0
-3
 
9.0
 
0.0
0.0
1.6
S
S 14
SU
BR -HZ WARMER
4
92
72
82.0
+6
 
17.0
0.94
0.0
0.0
3.8
S
W 31
PC
HZ HOT 
HUMID TSRA(2)
5
82
69
75.5
+1
 
10.5
0.28
0.0
0.0
3.2
NNE
NNW 16
PC
TSRA FROPA
6
78
66
72.0
-3
 
7.0
 
0.0
0.0
3.1
NNE
N 19
SU
PLEASANT
7
79
61
70.0
-5
 
5.0
 
0.0
0.0
2.6
NNE
NNE 15
PC
HUMID
8
80
69
74.5
0
 
9.5
T
0.0
0.0
3.8
NNE
NNE 19
PC
FU -SHRA
9
80
70
75.0
0
 
10.0
T
0.0
0.0
5.5
NNE
NNE 20
PC
-FU -SHRA
10
80
76
78.0
3
 
13.0
0.26
0.0
0.0
7.8
NNE
N 25
C
SHRA BREEZY 
-BR FROPA
11
88
70
79.0
5
 
14.0
 
0.0
0.0
6.0
N
WNW 25
SU
BREEZY WARM FROPA
12
76
64
70.0
-3
 
5.0
 
0.0
0.0
3.2
NNE
NNE 16
SU
COOLER
13
82
57
69.5
-4
 
4.5
 
0.0
0.0
1.7
SSE
W 12
SU
 
14
84
68
76.0
+2
 
11.0
0.04
0.0
0.0
3.0
SSE
SSE 10
C
-SHRA HUMID
15
86
73
79.5
+6
 
14.5
0.11
0.0
0.0
1.5
S
S 15
PC
SHRA HUMID BR
16
80
73
76.5
+4
 
11.5
2.26
0.0
0.0
1.3
N
N 17
PC
+SHRA TS BR
17
80
68
74.0
+2
 
9.0
0.01
0.0
0.0
2.3
N
N 14
PC
BR -SHRA FROPA
18
81
64
72.5
0
 
7.5
 
0.0
0.0
<1.0
NNE
E 12
PC
-BR
19
81
62
71.5
-1
 
6.5
 
0.0
0.0
0
NE
NNE 13
SU
BR
20
84
67
75.5
+3
 
10.5
 
0.0
0.0
0.2
SE
SE 7
SU
-BR
21
86
65
75.5
+4
 
10.5
 
0.0
0.0
1.6
SE
N 12
PC
 
22
85
66
75.5
+4
 
10.5
 
0.0
0.0
0.3
E
NE 13
PC
 
23
78
72
75.0
+7
 
10.0
 
0.0
0.0
4.9
N
N 21
C
FROPA BREEZY
24
77
67
72.0
+4
 
7.0
 
0.0
0.0
3.8
N
N 17
PC
PLEASANT
25
77
66
71.5
+2
 
6.5
0.03
0.0
0.0
3.7
NNE
NNE 20
PC
BREEZY -RA
26
76
68
72.0
+1
 
7.0
0.69
0.0
0.0
1.7
NNE
N 15
C
BR SHRA RA
27
86
73
79.5
+10
 
14.5
0.01
0.0
0.0
3.8
S
S 18
PC
-SHRA BR
28
79
69
74.0
+6
 
9.0
 
0.0
0.0
4.2
N
S 18
PC
FROPA COOLER
29
76
64
70.0
+3
 
5.0
 
0.0
0.0
2.1
NNE
NNE 16
PC
-BR
30
77
65
71.0
+4
 
6.0
 
0.0
0.0
1.1
NNE
NE 15
PC
BR

 
Temperature Data
AVERAGE HIGH :  80.8º     DEPARTURE:         0.0º
AVERAGE LOW :  67.4º     DEPARTURE:       +3.2º
MEAN:                74.1º     DEPARTURE:       +1.6º

HIGHEST: 92° on the 4th
LOWEST: 57° on the 13th

Number of Days:
00 - MAX 100º OR ABOVE
00 - MAX 32º OR BELOW
01 - MAX 90º OR ABOVE
00 - MIN 32º OR BELOW
00 - MIN 0º OR BELOW

Heating Degree Days
TOTAL THIS MONTH:  0.0 from 0 days
SEASONAL TOTAL: 2731.5 (since 09/2001)

Cooling Degree Days
TOTAL THIS MONTH:  272.5 from 30 days
SEASONAL TOTAL: 1859.5

NUMBER OF:

05 - Days Cloudy
18 - Days Partly Cloudy
07 - Days Clear or Sunny

14 - Days with Fog/Ground Fog
00 - Days with Dense Fog

00 - Days with Frost

03 - Days with Thunderstorms
03 - Thunderstorms

00 - Days with some type of Snowfall

 Precipitation Data
TOTAL FOR THE MONTH:   5.18"
DEPARTURE FROM NORMAL:    + 0.54" or 112%
GREATEST DAILY: 2.26" on the 16th
GREATEST IN 24-HR PERIOD: 2.28" on the 15th-16th
AVERAGE DAILY: 0.17"
NORMAL DAILY:   0.15"
# DAYS WITH MEASURABLE PRECIPITATION:  11 or 33.66%

MAXIMUM FOR SEPTEMBER:  21.91" in 1992 -->  (since
MINIMUM FOR  SEPTEMBER:    0.26" in 1978 -->  1976)
NORMAL FOR  SEPTEMBER: 4.62" (1976-2001)

Snowfall, Ice Pellets
TOTAL FOR THE MONTH: 0.0"
GREATEST IN 24 HOURS: 0.0" on the --
GREATEST DEPTH ON GROUND: 0.0" on the --
SEPTEMBER MAX = 0.0" in ----

Number of Days:
WITH 0.01" OR MORE PRECIP: 11
WITH 0.10" OR MORE PRECIP: 7
WITH 0.50" OR MORE PRECIP: 4
WITH 1.00" OR MORE PRECIP: 1

Pressure Data
HIGHEST SEA-LEVEL:  30.274" on the 7th & 8th
LOWEST SEA-LEVEL:  29.546" on the 11th

Wind
PEAK WIND GUST: 31 mph from the W on the 4th
AVERAGE SPEED:   2.83 mph from a dominant NNE direction

 
  • SEPTEMBER STATION RECORDS:
  • 10th - Maximum Minimum Temperature 76° [previously 75° in 1985]
  • 11th - Maximum Wind Speed 25 mph [previously 23 mph in 1992]
  • 15th - Maximum Minimum Temperature 73° [previously 72° in 1980]
  • 23rd - Maximum Minimum Temperature 72° [previously 69° in 1980]
  • 27th - Maximum Minimum Temperature 73° [previously 71° in 1976]
    		•

    YEAR-TO-DATE 2002 through 9/30/02

    Temperature Data
    AVERAGE HIGH :  74.6º   DEPARTURE:   +2.4º
    AVERAGE LOW :  56.0º   DEPARTURE:   +2.2º
    MEAN:                65.3º   DEPARTURE:   +2.3º

    HIGHEST: 100° on the 24th of August
    LOWEST: 23º on 5th of January & the 5th of March

    Number of Days:
    01 - MAX 100º OR ABOVE
    00 - MAX 32º OR BELOW
    50 - MAX 90º OR ABOVE
    36 - MIN 32º OR BELOW
    00 - MIN 0º OR BELOW

    Heating Degree Days
    TOTAL:  1775.0

    Cooling Degree Days
    TOTAL:  1859.5

    NUMBER OF:

    030 - Days Cloudy
    172-  Days Partly Cloudy
    071 - Days Clear or Sunny

    111 - Days with Fog/Ground Fog
    003 - Days with Dense Fog

    12 - Days with Frost

    35 - Days with Thunderstorms
    48 - Thunderstorms

    04 - Days with some type of Snowfall

    		 Precipitation Data
    TOTAL:  34.11"
    DEPARTURE FROM NORMAL:   - 3.66" or 90%
    GREATEST DAILY: 2.26" on the 16th of September
    GREATEST IN 24-HR PERIOD: 2.28" on the 15th-16th of September
    AVERAGE DAILY: 0.12"
    NORMAL DAILY: 0.14"
    # DAYS WITH MEASURABLE PRECIPITATION:  86 or 31.50%

    MAXIMUM:  5.49" in March
    MINIMUM:   1.63" in February

    Snowfall, Ice Pellets
    TOTAL: 9.2"
    GREATEST IN 24 HOURS: 9.0" on January 2nd - 3rd
    GREATEST DEPTH ON GROUND: 9.0" on January 3rd

    Number of Days:

    WITH 0.01" OR MORE PRECIP: 86
    WITH 0.10" OR MORE PRECIP: 59
    WITH 0.50" OR MORE PRECIP: 23
    WITH 1.00" OR MORE PRECIP: 10

    Pressure Data
    HIGHEST SEA-LEVEL: 30.601" on March 1st
    LOWEST SEA-LEVEL:  29.450" on January 6th

     
    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, inoper- ative 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;

    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
    PL   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
    V V   Used for obscurred sky

    METAR Qualifiers: (now placed in FRONT of code)

    -  Light     + Heavy      DR Low drifting    M  Below ( -x.x degrees)
                                           MI Shallow     PR Partial