Portsmouth Weather Records Service
 

Local Climatological Data
*Data Is Subject to Correction by PWRS

Station:  PORTSMOUTH, VIRGINIA
Month:   MAY Year: 2004
Latitude: 36 48 04 N    Longitude: 76 19 37 W
Station Elevation: 20 FT 
Standard Time: EDT
 LOCAL CLIMATOLOGICAL DATA (WS-TYPE FORM: F-6)

                                          STATION:   PORTSMOUTH, VIRGINIA
                                          MONTH:     MAY  
                                          YEAR:      2004
                                          LATITUDE:   36 48 04 N                   
                                          LONGITUDE:  76 19 40 W                   
NOTE: DATA MAY EXTEND BEYOND RIGHT MARGIN
===============================================================================================================================
|-----TEMPERATURE IN F:---------||RAIN---SNOW-||------WIND-----|BAROMETER||HUMID||SKY||---------------WEATHER-----------------|
                                                 AVG  AVG PK  PK  MAX  MIN MAX MIN DOM WX
DY MAX MIN   AVG   DEP   HDD   CDD WTR  SNW DPTH DIR  SPD DIR SPD BAR  BAR HUM HUM SKY TYPES / NOTES
================================================================================================================================
                                 
 1  78  61   69.5   +5   0.0   4.5 0.02 0.0    0 158  3.6 158 21 0199 0006  87  55  PC         SHRA MILD
 2  82  67   74.5  +10   0.0   9.5 0.07 0.0    0 180  6.3 180 23 0006 9874  85  59  PC         SHRA BREEZY
 3  71  48   59.5   -4   5.5   0.0 1.32 0.0    0 360  4.5 025 21 9988 9858  92  76   C 1       SHRA DZ FROPA
 4  61  45   53.0  -10  12.0   0.0 0.00 0.0    0 360  3.5 360 23 0137 9984  92  43  SU         PLEASANT
 5  73  49   61.0   -2   4.0   0.0    T 0.0    0 180  1.9 180 17 0095 9929  83  45  PC         -SHRA
 6  78  53   65.5    0   0.0   0.5 0.00 0.0    0 158  2.8 023 15 0145 9983  90  28  SU 1       
 7  89  59   74.0   +8   0.0   9.0 0.00 0.0    0 270  2.6 023 19 0118 0045  79  34  SU 1       FROPA
 8  69  58   63.5   -2   1.5   0.0 0.00 0.0    0 045  3.8 045 22 0321 0121  84  46  PC
 9  85  58   71.5   +6   0.0   6.5 0.00 0.0    0 180  2.3 158 14 0240 0082  86  50  SU 8       HZ
10  87  66   76.5  +10   0.0  11.5 0.00 0.0    0 180  3.8 270 18 0177 0105  78  30  SU 8       HZ
11  87  65   76.0   +9   0.0  11.0 0.00 0.0    0 180  4.3 180 18 0206 0126  81  39  SU 8       HZ
12  86  65   75.5   +7   0.0  10.5 0.00 0.0    0 180  3.2 180 19 0268 0154  88  43  PC
13  86  66   76.0   +8   0.0  11.0 0.00 0.0    0 180  3.3 270 17 0270 0173  88  44  SU
14  85  67   76.0  +10   0.0  11.0 0.00 0.0    0 180  3.5 180 16 0269 0180  88  46  SU
15  86  67   76.5  +10   0.0  11.5 0.00 0.0    0 180  4.5 203 18 0260 0145  82  37  SU         BREEZY
16  86  68   77.0  +10   0.0  12.0    T 0.0    0 180  3.3 270 16 0305 0217  82  42  PC         SHRA
17  86  66   76.0   +8   0.0  11.0 0.00 0.0    0 158  3.1 158 20 0368 0281  84  41  SU
18  88  66   77.0   +8   0.0  12.0 0.00 0.0    0 180  3.5 180 20 0319 0141  85  36  SU
19  88  70   79.0  +10   0.0  14.0 0.47 0.0    0 180  3.4 158 23 0171 0059  90  46  PC 13      
20  74  67   70.5   +3   0.0   5.5 0.01 0.0    0 045  0.5 045 11 0238 0116  92  76   C 1       -SHRA
21  89  67   78.0   +9   0.0  13.0    T 0.0    0 158  2.3 158 17 0179 9970  91  53  PC 18      -SHRA
22  88  67   77.5   +9   0.0  12.5 0.70 0.0    0 158  3.3 270 31 0075 9934  91  52  PC 13      TSRA
23  92  70   81.0  +11   0.0  16.0 0.03 0.0    0 180  4.5 180 34 9990 9877  85  46  PC 138     HZ HOT TSRA 
24  91  70   80.5   +9   0.0  15.5 0.00 0.0    0 180  4.8 180 17 9963 9865  80  47  SU 8       HZ HOT
25  92  73   82.5  +11   0.0  17.5 0.00 0.0    0 180  3.3 180 19 9902 9817  83  40  SU 8       HZ HOT
26  91  70   80.5  +10   0.0  15.5 1.16 0.0    0 270  2.5 360 20 9842 9702  85  39  PC 831     HZ +TSRA BR
27  83  66   74.5   +6   0.0   9.5 0.01 0.0    0 270  2.9 248 17 9807 9740  91  52  PC 18      HZ FROPA -SHRA
28  86  71   78.5  +10   0.0  13.5 0.17 0.0    0 270  5.1 270 31 9792 9638  83  50  PC 8       HZ BREEZY SHRA FROPA
29  76  62   69.0   -2   0.0   4.0 0.00 0.0    0 045  4.3 360 23 0060 9792  85  46  SU         BRREZY COOLER
30  76  58   67.0   -4   0.0   2.0    T 0.0    0 160  4.0 160 17 0053 9875  87  53   C         SHRA
31  87  69   78.0   +5   0.0  13.0    T 0.0    0 180  4.7 270 29 0049 9566  97  59  PC 1       HUMID THUNDER(NO RAIN)
=============================================================================================================================
SM                      23.0 283.0 3.96 0.0    0          
================================================================================================================================
AV 83.1 63.7 73.4 +5.8             0.13          186 3.53 190 20 0123 9979  86  47
===============================================================================================================================
NOTES:
WINDS IN M.P.H.
                      
 CLIMATOLOGICAL DATA (WS-TYPE FORM: F-6) , PAGE 2

                                          STATION:  PORTSMOUTH, VIRGINIA
                                          MONTH:    MAY
                                          YEAR:     2004
                                          LATITUDE:   36 48 04 N                   
                                          LONGITUDE:  76 19 40 W                   

[TEMPERATURE DATA]      [PRECIPITATION DATA]               SYMBOLS USED IN WX TYPES COLUMN

AVERAGE MAXIMUM: 83.1   TOTAL FOR MONTH:   3.96"           1 = FOG
AVERAGE MAX DEP: +5.7   DPTR FM NORMAL:   -0.16  OR  96%   2 = FOG REDUCING VISIBILITY  
AVERAGE MINIMUM: 63.7   GRTST 24HR  1.46" ON 2-3               TO 1/4 MILE OR LESS      
AVERAGE MIN DEP: +5.9   GRTST DAILY 1.32" ON 3             3 = THUNDER
AVERAGE MONTHLY: 73.4   SNOW, ICE PELLETS, GLAZE           4 = ICE PELLETS              
AVERAGE MON DEP: +5.8   TOTAL MONTH:  0.0"                 5 = HAIL                     
                        GRTST DAILY   0.0" ON --TH         6 = GLAZE OR RIME            
HIGHEST: 92 ON 23,25    GRTST 24HR    0.0" ON --TH         7 = BLOWING DUST OR SAND:    
LOWEST:  45 ON 4        GRTST DEPTH:  0.0" ON --TH             VSBY  MILE OR LESS    
                                                           8 = SMOKE OR HAZE            
[NO. OF DAYS WITH]      [PRECIP  - DAYS WITH MEASURABLE]   9 = BLOWING SNOW             
                                                           X = TORNADO                  
MAX 32 OR BELOW:   0    0.01 INCH OR MORE:  10 OR 32.26%
MAX 90 OR ABOVE:   4    0.10 INCH OR MORE:   5                                  
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   3                                  
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   2                                  

[HDD (BASE 65) ]                                   [# DAYS WITH]
TOTAL THIS MO.  23.0    CLEAR  (SCALE 0-3)  14     11 FOG                          
                        PTCLDY (SCALE 4-7)  14      0 DENSE FOG    [VSBY 1/4 MILE OR LESS]
SEASONAL      3282.5    CLOUDY (SCALE 8-10)  3      4 THUNDERSTORMS              
                                                    5 # OF THUNDERSTORMS
[CDD (BASE 65) ]                                    0 SNOW                         
TOTAL THIS MO. 283.0                                0 FROST
                        [PRESSURE DATA]                       [AVERAGE SKY COVER]
SEASONAL TOTAL 355.0    HIGHEST SLP 30.368" ON THE 17TH               35.16%   
                        LOWEST  SLP 29.566" ON THE 31ST       
                        AVERAGE SLP 30.051"
[STATION RECORDS]

WARMEST MAY ON RECORD [TIED WITH 1991] - MEAN TEMPERATURE 73.4

 2ND - TEMPERATURE - MAXIMUM MINIMUM - 67 [ PREVIOUS 66 1990 ]
 3RD - PRECIPITATION - 1.32" [ PREVIOUS 0.75" 1985 ]
15TH - TEMPERATURE TIED - MAXIMUM MINIMUM - 67 [ PREVIOUS 1983 ]
16TH - TEMPERATURE - MAXIMUM MINIMUM - 68 [ PREVIOUS 65 1994 ]
19TH - TEMPERATURE - MAXIMUM MINIMUM - 70 [ PREVIOUS 68 2000 ]
23RD - TEMPERATURE TIED - MAXIMUM MINIMUM - 70 [ PREVIOUS IN 1987 ]
23RD - TEMPERATURE - MAXIMUM 92 [ PREVIOUS 90 IN 1988 ]
25TH - TEMPERATURE - MAXIMUM MINIMUM - 73 [PREVIOUS 70 IN 2000 ]
31ST - WIND - MAXIMUM GUST - 29 MPH [ PREVIOUS 23 MPH IN 2003 ]

YEAR-TO-DATE

[TEMPERATURE DATA]      [PRECIPITATION DATA]

AVERAGE MAXIMUM: 62.7   TOTAL FOR YEAR:   12.35"
AVERAGE MAX DEP: +1.2   DPTR FM NORMAL:   -6.68" OR  65%
AVERAGE MINIMUM: 43.5   GRTST 24HR  1.46" ON  MAY 2-3     
AVERAGE MIN DEP: +1.1   GRTST DAILY 1.32" ON  MAY 3                        
AVERAGE MONTHLY: 53.1   SNOW, ICE PELLETS, GLAZE
AVERAGE MON DEP: +1.1   TOTAL:           6.5"                                   
                        GRTST DAILY   2.8" ON JANUARY 9TH
HIGHEST: 92 ON  5/23,25 GRTST 24HR    2.8" ON JANUARY 8-9TH
                        GRTST DEPTH:  2.8" ON JANUARY 9TH               
LOWEST:  17 ON  1/11

[NO. OF DAYS WITH]      [PRECIP  - DAYS WITH MEASURABLE]                        
                                                                                
MAX 32 OR BELOW:   3    0.01 INCH OR MORE:  45  OR 29.61%
MAX 90 OR ABOVE:   4    0.10 INCH OR MORE:  30                                  
MIN 32 OR BELOW:  43    0.50 INCH OR MORE:   8                                  
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   2

[HDD (BASE 65) ]                                   [# DAYS WITH]
TOTAL         2162.0    CLEAR  (SCALE 0-3)  36     53 FOG                          
                        PTCLDY (SCALE 4-7)  73      1 DENSE FOG    [VSBY 1/4 MILE OR LESS]
                        CLOUDY (SCALE 8-10) 43      8 THUNDERSTORMS              
                                                    9 # OF THUNDERSTORMS
[CDD (BASE 65) ]                                    8 SNOW                         
TOTAL          355.0                                7 FROST                     
                        [PRESSURE DATA]                                         
                        HIGHEST SLP 30.625" ON MARCH 25TH        
                        LOWEST  SLP 29.345" ON THE 18TH OF JANUARY  
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 > 1/4 but <=6 statute miles and
below to 1/4 mile
DU   Dust (widespread)
DS   Duststorm
DZ   Drizzle
FC   Funnel Cloud
FC+  Tornado/waterspout
FG   Fog with visibility <= 1/4 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