July & Yearly 2001
Graphs follow the table summary!


Portsmouth Weather Records Service
 

Local Climatological Data
*Data Are Subject to Correction by PWRS

 Station:  PORTSMOUTH, VIRGINIA
Month:   JULY   Year: 2001
Latitude: 36° 81' N    Longitude: 76° 33' W
Station Elevation: 20 FT 
Standard Time: EASTERN DAYLIGHT TIME

 
  Temperature Degree Days Precipitation  Wind       Sky Weather Peak Wind 
Date Max Min Mn Dep HDD CDD Total Snow Depth Avg Dir Type Types Speed Dir
1
90
76
83.0
+5
 
18.0
T
0.0
0
5.5
S
PC
-SHRA BREEZY 
DST LTG
26
SSW
2
80
63
71.5
-6
 
6.5
0.01
0.0
0
4.3
N
PC
DST LTG -SHRA FROPA
26
N
3
85
56
70.5
-8
 
5.5
 
0.0
0
1.1
S
PC
WARMER
14
S
4
91
73
82.0
+3
 
17.0
 
0.0
0
4.7
S
PC
HZ HUMID
18
S
5
88
71
79.5
0
 
14.5
0.04
0.0
0
4.5
S
PC
SHRA -HZ
19
S
6
79
67
73.0
-7
 
8.0
 
0.0
0
3.4
N
PC
FROPA COOLER
17
N
7
86
59
72.5
-7
 
7.5
 
0.0
0
2.5
N
SU
PLEASANT
13
NE
8
80
67
73.5
-6
 
8.5
0.13
0.0
0
3.4
S
C
SHRA BR
17
S
9
87
71
79.0
-2
 
14.0
 
0.0
0
3.0
N
PC
BR HZ
16
N
10
92
68
80.0
-1
 
15.0
 
0.0
0
2.5
W
SU
-BR HZ
16
W
11
95
75
85.0
+5
 
20.0
0.31
0.0
0
4.6
S
PC
BR HZ SHRA FROPA
21
W
12
84
68
76.0
-4
 
11.0
 
0.0
0
3.0
N
PC
PLEASANT
17
N
13
82
68
75.0
-6
 
10.0
 
0.0
0
1.4
N
PC
 
13
W
14
81
63
72.0
-9
 
7.0
 
0.0
0
2.6
N
SU
PLEASANT
17
N
15
84
65
74.5
-6
 
9.5
 
0.0
0
2.8
N
PC
 
17
NNE
16
88
66
77.0
-3
 
12.0
 
0.0
0
0.0
NNE
PC
 
13
NNE
17
93
69
81.0
+1
 
16.0
 
0.0
0
3.7
S
PC
 
18
S
18
82
73
77.5
-3
 
12.5
0.28
0.0
0
2.6
S
C
SHRA BR
17
S
19
77
70
73.5
-7
 
8.5
0.85
0.0
0
3.7
NNE
C
BR SHRA FROPA
22
NNE
20
76
68
72.0
-9
 
7.0
 
0.0
0
6.0
N
PC
 
22
NNE
21
78
65
71.5
-10
 
6.5
 
0.0
0
4.0
NNE
SU
 
19
NNE
22
83
67
75.0
-6
 
10.0
 
0.0
0
2.4
NNE
PC
HUMID
14
NNE
23
86
73
79.5
0
 
14.5
0.11
0.0
0
2.0
SSW
PC
HZ WARM FROPA TSRA
22
W
24
89
75
82.0
+2
 
17.0
 
0.0
0
4.7
S
PC
HZ
21
S
25
90
76
83.0
+3
 
18.0
 
0.0
0
6.5
S
PC
HZ
25
SSW
26
84
76
80.0
0
 
15.0
0.04
0.0
0
5.5
S
PC
HZ SHRA
24
S
27
77
68
72.5
-8
 
7.5
0.11
0.0
0
6.9
NNE
PC
SHRA BR FROPA
23
NNE
28
79
64
71.5
-8
 
6.5
 
0.0
0
2.7
NNE
PC
 
15
NNE
29
75
69
72.0
-7
 
7.0
2.02
0.0
0
1.3
SSW
C
SHRA+ BR FROPA
11
SSW
30
76
69
72.5
-6
 
7.5
0.06
0.0
0
5.6
N
PC
-SHRA DZ BR
15
NNE
31
78
64
71.0
-9
 
6.0
 
0.0
0
2.7
NNE
SU
PLEASANT
16
NNE

 
Temperature Data
AVERAGE HIGH :  83.7º     DEPARTURE:       -5.0º
AVERAGE LOW :   68.5º     DEPARTURE:      -2.7º
MEAN:                     76.1º     DEPARTURE:      -3.8º

HIGHEST: 95º on the 11th
LOWEST:  56º on the 3rd

Number of Days:
00 - MAX 100º OR ABOVE
00 - MAX 32º OR BELOW
06 - 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:   3627.0

Cooling Degree Days
TOTAL THIS MONTH: 343.5 from 31 days
SEASONAL TOTAL:   880.0

NUMBER OF:

04 - Days Cloudy
22 - Days Partly Cloudy
05 - Days Clear or Sunny

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

00 - Days with Frost

01 - Days with Thunderstorms
01 - Thunderstorms

00 - Days with some type of Snowfall

 Precipitation Data
TOTAL FOR THE MONTH:  3.96"
DEPARTURE FROM NORMAL: -1.30" or 75%
GREATEST DAILY: 2.02" on the 29th
GREATEST IN 24-HR PERIOD: 2.08" on the 29th-30th
AVERAGE DAILY: 0.13"
NORMAL DAILY:   0.17"
# DAYS WITH MEASURABLE PRECIPITATION:  11
YEAR-TO-DATE: 22.43"  DEPARTURE: -5.47" or 80% of the norm

MAXIMUM FOR JULY:   13.32" in 1999 --> (since
MINIMUM FOR JULY:    1.32" in 1978 -->  1976)

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 ---
JULY 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: 2
WITH 1.00" OR MORE PRECIP: 1

Pressure Data
HIGHEST SEA-LEVEL:  30.317" on the 31st
LOWEST SEA-LEVEL:   29.682" on the 11th

Wind
PEAK WIND GUST: 26 mph from the SSW on the 1st and 
                                    26 mph from the N on the 2nd
AVERAGE SPEED: 3.50 mph from a dominant S direction

 
  • JULY RECORDS:
  • 3rd -  Minimum daily temperature 56°(previously 63° in 1979)
  • 14th - Minimum daily temperature 63°(previously 64° in 1998)
  • 15th - Minimum daily temperature 65°(previously 68° in 1998)
  • 16th - Tied Minimum daily temperature 66° (previously in 1981)
  • 19th - Minimum maximum daily temperature 77°(previously 78° in 1984)
  • 20th - Minimum maximum daily temperature 76° (previously 79° in 2000)
  • 21st - Minimum maximum daily temperature 78° (previously 79° in 1984)
  • 27th - Minimum maximum daily temperature 77° (previously 79° in 1977)
    		•

    YEAR-TO-DATE 2001 through 7/31
    [next update 9/1/2001]

    Temperature Data
    AVERAGE HIGH : 67.8º   DEPARTURE:  -0.9º
    AVERAGE LOW :  50.6º   DEPARTURE: +0.8º
    MEAN:                    59.2º  DEPARTURE:   -0.1º

    HIGHEST: 95° on the 11th of July
    LOWEST:  22º on 4th of January

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

    Heating Degree Days
    TOTAL:  2107.0

    Cooling Degree Days
    TOTAL:   880.0

    NUMBER OF:

    030 - Days Cloudy
    129-  Days Partly Cloudy
    053 - Days Clear or Sunny

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

    12 - Days with Frost

    16 - Days with Thunderstorms
    18 - Thunderstorms

    05 - Days with some type of Snowfall

    		 Precipitation Data
    TOTAL:  22.43"
    DEPARTURE FROM NORMAL:   -5.47" or 80%
    GREATEST DAILY: 2.18" on the 16th of June
    GREATEST IN 24-HR PERIOD: 2.18" on the 16th of June
    AVERAGE DAILY: 0.11"
    NORMAL DAILY: 0.13"
    # DAYS WITH MEASURABLE PRECIPITATION:  73 or 34.43%

    MAXIMUM:  5.26" in June
    MINIMUM:   1.51" in January

    Snowfall, Ice Pellets
    TOTAL: 0.6" 
    GREATEST IN 24 HOURS: 0.3" on February 22nd & March 6th
    GREATEST DEPTH ON GROUND: 0.3" on February 22nd & March 6th

    Number of Days:

    WITH 0.01" OR MORE PRECIP: 73
    WITH 0.10" OR MORE PRECIP: 44
    WITH 0.50" OR MORE PRECIP: 16
    WITH 1.00" OR MORE PRECIP: 6

    Pressure Data
    HIGHEST SEA-LEVEL: 30.660" on February 11th
    LOWEST SEA-LEVEL:  29.474" on March 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


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