Portsmouth Weather Records Service
 

Local Climatological Data
*Data Are Subject to Correction by PWRS

 Station:  PORTSMOUTH, VIRGINIA
Month:   APRIL Year: 2002
Latitude: 36° 81' N    Longitude: 76° 33' W
Station Elevation: 20 FT 
Standard Time: EASTERN STANDARD TIME/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
64
49
56.5
0
8.5
 
0.18 
0.0
0.0
4.8
WNW
WNW 20
PC
SHRA BR FROPA
2
72
47
59.5
+3
5.5
 
 
0.0
0.0
5.5
S
S 19
SU
MILD
3
84
50
67.0
+10
 
2.0
0.62
0.0
0.0
8.5
S
NNE 28
PC
BR(AM) WARM
TSRA FROPA
4
54
44
49.0
-9
16.0
 
0.02
0.0
0.0
7.1
N
N 29
PC
COOL
5
55
40
47.5
-8
17.5
 
 
0.0
0.0
5.0
N
N 23
PC
COOL
6
54
38
46.0
-9
19.0
 
 
0.0
0.0
6.0
N
N 24
PC
COOL
7
57
39
48.0
-8
17.0
 
 
0.0
0.0
4.6
N
NNE 17
SU
COOL
8
74
40
57.0
-1 
8.0
 
 
0.0
0.0
5.3
S
S 20
PC
MILDER
9
82
58
70.0
+13
 
5.0
T
0.0
0.0
7.7
S
SSW 27
PC
BREEZY WARM
-SHRA
10
68
49
58.5
+3
6.5
 
0.27
0.0
0.0
5.7
N
N 26
PC
SHRA BR FROPA
11
64
43
53.5
-3
11.5
 
T
0.0
0.0
6.0
NNE
NNE 21
PC
BREEZY -SHRA(PM)
12
75
55
65.0
+6
 
 
0.05
0.0
0.0
4.3
SE
SE 19
PC
HUMID SHRA BR
13
76
58
67.0
+8
 
2.0
T
0.0
0.0
3.4
S
S 16
PC
-SHRA
14
81
62
71.5
+13
 
6.5
 
0.0
0.0
5.0
S
S 17
PC
 
15
83
67
75.0
+15
 
10.0
0.06
0.0
0.0
4.8
S
WSW 18
PC
SHRA TS
16
90
66
78.0
+18
 
13.0
 
0.0
0.0
3.5
S
SE 15
PC
HOT HUMID
17
93
68
80.5
+21
 
15.5
 
0.0
0.0
4.3
S
W 16
SU
HOT HUMID
18
87
69
78.0
+20
 
13.0
 
0.0
0.0
3.7
S
NE 16
SU
HZ
19
90
67
78.5
+19
 
13.5
0.50
0.0
0.0
3.4
S
N 27
PC
-BR HZ TSRA
20
82
66
74.0
+14
 
9.0
T
0.0
0.0
2.8
S
W 15
PC
-BR HZ -SHRA 
DST LTG
21
73
57
65.0
+3
 
 
0.09
0.0
0.0
4.6
NNE
NE 17
PC
FROPA SHRA 
-BR
22
73
56
64.5
+4
0.5
 
  T
0.0
0.0
4.7
NNE
N 21
PC
-SHRA -BR FROPA
23
59
48
53.5
-7
11.5
 
 
0.0
0.0
5.5
N
N 22
PC
 BREEZY COOLER
24
65
43
54.0
-7
11.0
 
 
0.0
0.0
3.3
NNE
N 15
SU 
 
25
72
53
62.5
+1
2.5
 
0.44
0.0
0.0
4.7
SSE
N 22
PC
SHRA BR FROPA
26
67
47
57.0
-4
8.0
 
 
0.0
0.0
3.4
N
WSW 18
SU
 
27
72
47
59.5
-3
5.5
 
 
0.0
0.0
2.7
SE
SE 14
PC
 
28
80
64
72.0
+10
 
7.0
0.31
0.0
0.0
6.6
S
SSW 21
PC
SHRA TSRA 
BR WARMFROPA
29
73
57
65.0
+4
 
 
 T
0.0
0.0
6.3
N
W 29
PC
-TSRA FROPA
30
68
51
59.5
-3
5.5
 
 
0.0
0.0
5.3
N
S 17
SU 
 

 
Temperature Data
AVERAGE HIGH :  72.9º     DEPARTURE:      + 3.2º
AVERAGE LOW :  53.3º     DEPARTURE:      + 4.9º
MEAN:                63.1º     DEPARTURE:       + 4.0º

HIGHEST: 93° on the 17th
LOWEST: 38º on the 6th

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

Heating Degree Days
TOTAL THIS MONTH:  154.0 from 16 days
SEASONAL TOTAL:   2648.5

Cooling Degree Days
TOTAL THIS MONTH:  96.5 from 11 days
SEASONAL TOTAL:   113.0

NUMBER OF:

00 - Days Cloudy
23 - Days Partly Cloudy
07 - Days Clear or Sunny

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

00 - Days with Frost

05 - Days with Thunderstorms
06 - Thunderstorms

00 - Days with some type of Snowfall

 Precipitation Data
TOTAL FOR THE MONTH:   2.54"
DEPARTURE FROM NORMAL:    - 0.83" or 75%
GREATEST DAILY: 0.62" on the 3rd
GREATEST IN 24-HR PERIOD: 0.64" on the 3rd & 4th
AVERAGE DAILY: 0.08"
NORMAL DAILY:   0.11"
# DAYS WITH MEASURABLE PRECIPITATION:  10 or 33.33%
YEAR-TO-DATE: 14.59"  DEPARTURE: - 0.42" or 97% of the norm

MAXIMUM FOR APRIL:  7.08" in 1991 -->  (since
MINIMUM FOR  APRIL:  1.21" in 1985 -->  1977)
NORMAL FOR  APRIL:  3.40" 

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 --
APRIL MAX = 1.1" in 1983

Number of Days:
WITH 0.01" OR MORE PRECIP: 10
WITH 0.10" OR MORE PRECIP: 6
WITH 0.50" OR MORE PRECIP: 2
WITH 1.00" OR MORE PRECIP: 0

Pressure Data
HIGHEST SEA-LEVEL:  30.520" on the 11th
LOWEST SEA-LEVEL:  29.628" on the 29th

Wind
PEAK WIND GUST: 29 mph from the N on the 4th ;
                             29 mph from the W on the 29th
AVERAGE SPEED:  4.90 mph from a dominant S direction

 
  • APRIL STATION RECORDS: 
  • 10th - Daily precipitation - 0.27" [previously 0.18" 1998]
  • 14th - Maximum Minimum Temperature - 62° [previously 61° in 1994]
  • 15th - Maximum Minimum Temperature - 67° [previously 59° in 1994]
  • 15th - Maximum Temperature TIED - 83° [previously in 1994]
  • 16th - Maximum Temperature - 90° [previously 82° in 1998]
  • 16th - Maximum Minimum Temperature - 66° [previously 63° in 1993]
  • 17th - Maximum Temperature - 93° [previously 87° in 1992]
  • 17th - Maximum Minimum Temperature TIED - 68° [previously 1998]
  • 18th - Maximum Temperature TIED - 87° [previously  in 1992]
  • 18th - Maximum Minimum Temperature  - 69° [previously 63° in 1992]
  • 19th - Maximum Minimum Temperature  - 67° [previously 61° in 1995]
  • 20th - Maximum Minimum Temperature  - 66° [previously 64° in 1995]
    		•

    YEAR-TO-DATE 2002 through 4/30/02

    Temperature Data
    AVERAGE HIGH :  62.3º   DEPARTURE:   +4.7º
    AVERAGE LOW :  41.4º   DEPARTURE:   +2.9º
    MEAN:                51.8º   DEPARTURE:   +3.8º

    HIGHEST: 93° on the 17th of April
    LOWEST:  23º on 5th of January & the 5th of March

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

    Heating Degree Days
    TOTAL:  1692.0

    Cooling Degree Days
    TOTAL:  113.0

    NUMBER OF:

    014 - Days Cloudy
    079-  Days Partly Cloudy
    027 - Days Clear or Sunny

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

    12 - Days with Frost

    07 - Days with Thunderstorms
    09 - Thunderstorms

    04 - Days with some type of Snowfall

    		 Precipitation Data
    TOTAL:  14.59"
    DEPARTURE FROM NORMAL:   - 0.42" or 97%
    GREATEST DAILY: 1.72" on the 19th of January
    GREATEST IN 24-HR PERIOD: 1.86" on the 19th & 20th of January
    AVERAGE DAILY: 0.12"
    NORMAL DAILY: 0.13"
    # DAYS WITH MEASURABLE PRECIPITATION:  41 or 34.17%

    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: 41
    WITH 0.10" OR MORE PRECIP: 27
    WITH 0.50" OR MORE PRECIP: 11
    WITH 1.00" OR MORE PRECIP: 04

    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