May & Yearly 2000

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Portsmouth Weather Records Service
 

Local Climatological Data
*Data Are Subject to Correction by PWRS

Station:  PORTSMOUTH, VIRGINIA
Month:   MAY     Year: 2000
Latitude: 36° 50'N    Longitude: 76° 18'W  (OFFICIAL CITY) 
Station Elevation: 20 FT 
Standard Time: EASTERN DAYLIGHT

 
  Temperature Degree Days Precipitation     Wind    Weather Weather Peak Wind 
Date Max Min Mn Dep HDD CDD Total Snow Depth Avg Dir Types Types Speed Dir
1
81
47
64.0
0
1.0
 
0.0
0.0
0
6.0
SSW
PC
BREEZY MILD
23
SSW
2
75
56
65.5
3
 
0.5
T
0.0
0
6.8
SSW
PC
-SHRA FROPA
27
SSW
3
75
52
63.5
0
1.5
 
0.0
0.0
0
2.7
NE
SU
-BR(AM)
15
NE
4
79
52
65.5
2
 
0.5
0.0
0.0
0
3.3
SE
SU
 
13
SE
5
85
58
71.5
8
 
6.5
0.0
0.0
0
5.0
SSW
-PC
 
17
W
6
89
62
75.5
10
 
10.5
0.0
0.0
0
3.3
S
SU
HZ SEABREEZE
12
S
7
91
66
78.5
13
 
13.5
0.0
0.0
0
3.2
SSW
SU
HZ HOT
16
SSW
8
91
65
78.0
13
 
13.0
0.0
0.0
0
6.2
SSW
SU
HOT
21
SSW
9
88
66
77.0
13
 
12.0
0.0
0.0
0
7.0
S
SU
HOT BREEZY
23
SSW
10
89
67
78.0
12
 
13.0
0.0
0.0
0
8.5
SSW
PC
HOT BREZY FROPA DST LTG
27
SSW
11
79
57
68.0
2
 
3.0
0.0
0.0
0
4.3
N
SU
COOLER PLEASANT
24
N
12
90
63
76.5
9
 
11.5
0.0
0.0
0
5.2
SSW
SU
HZ HOT
23
SSW
13
95
72
83.5
16
 
18.5
0.0
0.0
0
4.6
W
PC
HZ HOT HIMD
20
NNE
14
79
65
72.0
6
 
7.0
0.0
0.0
0
4.9
N
PC
FROPA COOLER
34
N
15
70
57
63.5
-3
1.5
 
0.0
0.0
0
5.8
N
SU
COOLER PLEASANT
24
N
16
75
52
63.5
-3
1.5
 
0.0
0.0
0
3.0
SSE
PC
 
13
SE
17
81
60
70.5
2
 
5.5
0.07
0.0
0
5.0
SSE
PC
SHRA(AM)
23
SSW
18
87
66
76.5
7
 
11.5
0.0
0.0
0
8.2
SSW
PC
BREEZY WARM
28
SSW
19
91
68
79.5
10
 
14.5
0.0
0.0
0
5.8
S
PC
HZ DST LTG(PM)
FROPA
22
N
20
81
62
71.5
3
 
6.5
0.25
0.0
0
4.4
NE
PC
TSRA(2) HZ BR
29
NE
21
66
61
63.5
-6
1.5
0.0
0.42
0.0
0
3.3
NE
C
TSRA BR DAMP
16
NNE
22
74
62
68
0
 
3.0
1.73
0.0
0
4.1
NNE
C
SHRA TSRA(2) BR
19
SSW
23
78
60
69
-1
 
4.0
T
0.0
0
3.2
SSE
PC
-SHRA BR HZ
13
S
24
87
68
77.5
6
 
12.5
0.0
0.0
0
5.5
W
PC
 HZ
21
W
25
84
70
77.0
6
 
12.0
0.13
0.0
0
4.2
S
PC
TSRA
21
W
26
82
63
72.5
3
 
7.5
0.0
0.0
0
2.8
W
PC
 
20
W
27
86
63
74.5
7
 
9.5
1.33
0.0
0
2.6
S
PC
HZ SHRA TSRA(2)
28
N
28
70
62
66.0
-2
 
1.0
0.04
0.0
0
3.3
NNE
C
SHRA BR
15
NE
29
63
52
57.5
-13
7.5
 
1.63
0.0
0
10.5
N
C
TSRA BR RA WINDY
36
NNE
30
61
53
57.0
-15
8.0
 
T
0.0
0
10.2
N
C
DZ -SHRA
30
N
31
70
57
63.5
-10
1.5
 
T
0.0
0
4.8
NNE
PC
-BR -DZ
18
NNE

 
Temperature Data
AVERAGE HIGH : 80.4º     DEPARTURE:   +2.9º
AVERAGE LOW :  60.8º     DEPARTURE:   +3.3º
MEAN:                    70.6º     DEPARTURE:   +3.1º

HIGHEST: 95º on 13th
LOWEST:  47º on 1st

Number of Days:
MAX 100º OR ABOVE: 0
MAX 32º OR BELOW:  0
MAX 90º OR ABOVE:   5
MIN 32º OR BELOW:   0
MIN 0º OR BELOW:     0

Heating Degree Days
TOTAL THIS MONTH: 24.0 from 8 days
SEASONAL TOTAL:   2976.0

Cooling Degree Days
TOTAL THIS MONTH: 197.0 from 23 days
SEASONAL TOTAL:    222.0

NUMBER OF:

Days Cloudy:                                               5
Days Partly Cloudy:                                  17
Days Clear or Sunny:                                9
Days with Fog/Ground Fog:                      8
Days with Dense Fog:                               0
Days with Frost:                                         0
Days with Thunderstorms:                     6
Thunderstorms:                                         9
Days with some type of Snowfall:         0

Precipitation Data
TOTAL FOR THE MONTH: 5.60"
DEPARTURE FROM NORMAL: +1.55" or 138%
GREATEST DAILY: 1.73" on the 22nd 
GREATEST IN 24- HR PERIOD: 1.73"  on the 22nd
AVERAGE DAILY: 0.18"
NORMAL DAILY:   0.13"
# DAYS WITH MEASURABLE PRECIPITATION:  8
YEAR-TO-DATE: 18.51"  DEPARTURE: -0.78" or 96% of the norm

MAXIMUM FOR MAY:      8.06" in 1988 --> (since
MINIMUM FOR MAY:      1.02" in 1986 -->  1977)

Snowfall, Ice Pellets
TOTAL FOR THE MONTH: 0.00"
GREATEST IN 24 HOURS: 0.00" on the ---
GREATEST DEPTH ON GROUND: 0.00 on the ---

MAY MAX = 0.0" in 

Number of Days:
WITH 0.01" OR MORE PRECIP: 8
WITH 0.10" OR MORE PRECIP: 6
WITH 0.50" OR MORE PRECIP: 3
WITH 1.00" OR MORE PRECIP: 3

Pressure Data
HIGHEST SEA-LEVEL:  30.356" on the 3rd
LOWEST SEA-LEVEL:   29.587" on the 25th

Wind
PEAK WIND GUST: 36 mph from the NNE on the 29th
AVERAGE SPEED: 5.1 mph from a dominant S direction


 
  • MAY 2000 MONTHLY STATION RECORDS:
  • Maximum Temperature Tied - 89º  on the 6th (previous 89º  in 1986) ; (Area record 93º  in 1892)
  • Maximum Temperature - 91º on the 8th (previous 88ºin 1984) ; (Area record 95º in 1880)
  • Maximum Temperature - 88º on the 9th (previous 87º in 1979) ; (Area record 94º in 1880 and 1963)
  • Maximum Minimum Temperature - 66º on the 9th (previous 65º in 1979)
  • Maximum Temperature - 89º on the 10th (previous 88º in 1987)
  • Maximum Minimum Temperature - 67º on the 10th (previous 64º in 1979) 
  • Maximum Temperature - 90º on the 12th (previous 88º in 1991) ; (Area record 92º in 1881) 
  • Maximum Temperature - 95º on the 13th (previous 91º in 1991) (Also, new area record)
  • Maximum Minimum Temperature - 72º on the 13th (previous 70º in 1980)
  • Maximum Daily Wind Gust - 34 mph on the 14th (previous 28 mph in 1999)
  • Maximum Minimum Temperature - 68º on the 19th (previous 67º in 1976) 
  • Daily precipitation - 1.73" on the 22nd (previous 1.63" in 1982)
  • Maximum Minimum Temperature - 70º on the 25th (previous 67º in 1980)
  • Daily precipitation - 1.33" on the 27th (previous 0.99" in 1990)
  • Minimum Maximum Temperature - 63º on the 29th (previous 65º in 1996)
  • Daily precipitation - 1.63" on the 29th (previous 0.80" in 1984)
  • Maximum Daily Wind Gust - 36 mph on the 29th (previous 35 mph in 1984)
  • Minimum Maximum Temperature - 61º on the 30th (previous 67º in 1996)
  • YEAR-TO-DATE 2000 [through 5/31/00; next update 6/30/00]

    Temperature Data
    AVERAGE HIGH : 62.8º   DEPARTURE: +1.3º
    AVERAGE LOW :  44.4º   DEPARTURE: +2.2º
    MEAN:                    53.6º  DEPARTURE:  +1.8º

    HIGHEST: 95º on 13th of May
    LOWEST:  12º on 28th of January

    Number of Days:
    MAX 100º OR ABOVE: 0
    MAX 32º OR BELOW:  6
    MAX 90º OR ABOVE:   5
    MIN 32º OR BELOW: 26
    MIN 0º OR BELOW:     0

    Heating Degree Days
     TOTAL:  1951.5

    Cooling Degree Days
    TOTAL:       222.0

    NUMBER OF:

    Days Cloudy:                                                26
    Days Partly Cloudy:                                    80
    Days Clear or Sunny:                                 46
    Days with Fog/Ground Fog:                      50
    Days with Dense Fog:                                 5
    Days with Frost:                                           7
    Days with Thunderstorms:                       10
    Thunderstorms:                                          13
    Days with some type of Snowfall:           9

    Precipitation Data
    TOTAL: 18.51"
    DEPARTURE FROM NORMAL:   -0.78" or 96%
    GREATEST DAILY: 1.73" on May 22nd
    GREATEST IN 24- HR PERIOD: 1.73"  on May 22nd 
    AVERAGE DAILY: 0.12"
    NORMAL DAILY: 0.13"
    # DAYS WITH MEASURABLE PRECIPITATION:  55 or 36.18%

    MAXIMUM:  5.60" in May
    MINIMUM:   1.29" in February

    Snowfall, Ice Pellets
    TOTAL: 6.70"
    GREATEST IN 24 HOURS: 4.0" on January 25th
    GREATEST DEPTH ON GROUND: 4.0" on January 25th

    Number of Days:

    WITH 0.01" OR MORE PRECIP: 55
    WITH 0.10" OR MORE PRECIP: 32
    WITH 0.50" OR MORE PRECIP: 12
    WITH 1.00" OR MORE PRECIP: 5

    Pressure Data
    HIGHEST SEA-LEVEL: 30.758" on the January 15th
    LOWEST SEA-LEVEL:  29.232" on the January 25th


     
    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


    May 2000 Temperature Graph
    May 2000 Rain/Relative Humidity Graph
    May 2000 Wind Graph
    May 2000 Barometer & Wind Graph


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