Portsmouth Weather Records Service
 

Local Climatological Data
*Data Is Subject to Correction by PWRS

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

                                          STATION:   PORTSMOUTH, VIRGINIA
                                          MONTH:     APRIL  
                                          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  57  43   50.0   -6  15.0   0.0 0.18 0.0    0 270  5.3 270 25 9646 9516 100  65  PC 1       SHRA
 2  55  44   49.5   -7  15.5   0.0 0.03 0.0    0 270  6.3 270 21 9694 9583  93  55   C         SHRA
 3  57  44   50.5   -7  14.5   0.0 0.01 0.0    0 293  5.2 270 24 9727 9662  94  60  PC         -SHRA
 4  59  43   51.0   -7  14.0   0.0 0.00 0.0    0 315  9.1 270 34 9794 9526  82  32  PC         WINDY FROPA
 5  53  37   45.0  -11  20.0   0.0 0.00 0.0    0 338  9.3 338 33 0005 9791  54  23  SU         WINDY COLDER
 6  63  34   48.5   -6  16.5   0.0 0.00 0.0    0 360  5.5 270 23 0107 9901  55  18  SU         BREEZY DRY
 7  77  43   60.0   +4   5.0   0.0 0.00 0.0    0 270  4.5 270 23 9901 9694  68  31  SU         MILDER
 8  71  49   60.0   +3   5.0   0.0    T 0.0    0 045  4.1 045 16 9738 9579  86  50  PC 1       FROPA -SHRA
 9  68  46   57.0    0   8.0   0.0 0.00 0.0    0 360  4.3 360 20 9979 9614  91  45  SU 1
10  68  45   56.5   +1   8.5   0.0 0.04 0.0    0 045  2.2 045 16 0059 9971  90  40  PC 1       SHRA
11  59  47   53.0   -3  12.0   0.0 0.26 0.0    0 360  4.4 360 19 0061 9910  98  83   C 1       SHRA
12  65  47   56.0   -3   9.0   0.0 0.24 0.0    0 045  5.2 158 21 0062 9859 100  94   C 1       SHRA DZ
13  72  55   63.5   +4   1.5   0.0 0.53 0.0    0 158  6.3 158 28 9859 9516 100  75  PC 13      SHRA
14  60  46   53.0   -5  12.0   0.0 0.20 0.0    0 270  5.0 270 21 9809 9565 100  70  PC 1       SHRA FROPA
15  61  44   52.5   -8  12.5   0.0 0.11 0.0    0 360  6.6 360 31 0196 9809  97  46  PC 1       SHRA
16  64  38   51.0   -9  14.0   0.0 0.00 0.0    0 158  1.8 158 15 0334 0196  96  38  SU 
17  81  46   63.5   +4   1.5   0.0 0.00 0.0    0 180  3.8 203 20 0352 0241  87  35  SU         
18  85  58   71.5  +13   0.0   6.5 0.00 0.0    0 203  4.8 203 18 0342 0266  79  40  SU 
19  85  63   74.0  +14   0.0   9.0 0.00 0.0    0 203  6.3 203 23 0307 0046  76  38 -PC         WARM
20  83  63   73.0  +12   0.0   8.0 0.00 0.0    0 203  3.6 158 14 0067 9973  79  38  SU         AFT/EVE SEABREEZE
21  87  64   75.5  +13   0.0  10.5    T 0.0    0 203  6.0 180 26 0037 9936  94  35  PC         -SHRA
22  84  64   74.0  +13   0.0   9.0 0.00 0.0    0 203  8.0 203 11 0112 0043  93  48  PC
23  88  64   76.0  +15   0.0  11.0 0.10 0.0    0 203  6.0 203 22 0097 9963  96  69  PC 1       SHRA
24  72  59   65.5   +4   0.0   0.5 0.20 0.0    0 025  3.0 025 19 0240 0017 100  49   C 1       FROPA
25  74  55   64.5   +3   0.5   0.0 0.00 0.0    0 135  4.0 135 21 0271 0127  93  39  PC
26  83  58   70.5   +9   0.0   5.5 0.75 0.0    0 203 11.7 225 32 0127 9808 100  45  PC 13      SHRA TSHRA FROPA
27  70  57   63.5   +1   1.5   0.0 0.11 0.0    0 225  8.0 045 21 9940 9719 100  35   C 1       SHRA
28  65  46   55.5   -6   9.5   0.0 0.00 0.0    0 135  4.0 270 19 0365 9940  81  34  PC
29  75  47   61.0    0   4.0   0.0 0.00 0.0    0 203  3.1 158 20 0460 0346  86  35  PC
30  76  55   65.5   +3   0.0   0.5 0.00 0.0    0 158  3.1 158 18 0351 0192  87  44  PC
===============================================================================================================================
SM                     200.0  60.5 2.76 0.0    0          270 34                  
================================================================================================================================
AV 70.6 50.1 60.4 +1.3             0.09          210  5.4        0068 9877  88  46 
===============================================================================================================================
NOTES:
WINDS IN M.P.H.
                      
 CLIMATOLOGICAL DATA (WS-TYPE FORM: F-6) , PAGE 2

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

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

AVERAGE MAXIMUM: 70.6   TOTAL FOR MONTH:   2.76"           1 = FOG
AVERAGE MAX DEP: +1.0   DPTR FM NORMAL:   -0.71  OR  79%   2 = FOG REDUCING VISIBILITY  
AVERAGE MINIMUM: 50.1   GRTST 24HR  0.87" ON THE 26-27TH       TO 1/4 MILE OR LESS      
AVERAGE MIN DEP: +1.6   GRTST DAILY 0.75" ON THE 26TH      3 = THUNDER
AVERAGE MONTHLY: 60.4   SNOW, ICE PELLETS, GLAZE           4 = ICE PELLETS              
AVERAGE MON DEP: +1.3   TOTAL MONTH:  0.0"                 5 = HAIL                     
                        GRTST DAILY   0.0" ON --TH         6 = GLAZE OR RIME            
HIGHEST: 88 ON 23       GRTST 24HR    0.0" ON --TH         7 = BLOWING DUST OR SAND:    
LOWEST:  34 ON 6        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:  13 OR 43.33%
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:  10                                  
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   2                                  
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0                                  

[HDD (BASE 65) ]                                   [# DAYS WITH]
TOTAL THIS MO. 200.0    CLEAR  (SCALE 0-3)   8     13 FOG                          
                        PTCLDY (SCALE 4-7)  17      0 DENSE FOG    [VSBY 1/4 MILE OR LESS]
SEASONAL      3259.5    CLOUDY (SCALE 8-10)  5      2 THUNDERSTORMS              
                                                    2 # OF THUNDERSTORMS
[CDD (BASE 65) ]                                    0 SNOW                         
TOTAL THIS MO.  60.5                                0 FROST
                        [PRESSURE DATA]                       [AVERAGE SKY COVER]
SEASONAL TOTAL  72.0    HIGHEST SLP 30.460" ON THE 29TH              44.17%    
                        LOWEST  SLP 29.516" ON THE 1ST & 13TH
                        AVERAGE SLP 29.972"
[STATION RECORDS]

21ST - TEMPERATURE - MAXIMUM MINIMUM - 64 TIED [ PREVIOUSLY 1985 ]
22ND - TEMPERATURE - MAXIMUM MINIMUM - 64 TIED [ PREVIOUSLY 1992 ]
23RD - TEMPERATURE - MAXIMUM - 88 [ PREVIOUSLY 87 IN 1985 ]


YEAR-TO-DATE

[TEMPERATURE DATA]      [PRECIPITATION DATA]

AVERAGE MAXIMUM: 57.5   TOTAL FOR YEAR:    8.39"
AVERAGE MAX DEP:  0.0   DPTR FM NORMAL:   -6.52" OR  56%                         
AVERAGE MINIMUM: 38.4   GRTST 24HR  0.86" ON  APRIL 26-27TH     
AVERAGE MIN DEP:  0.0   GRTST DAILY 0.75" ON  APRIL 26TH                        
AVERAGE MONTHLY: 47.9   SNOW, ICE PELLETS, GLAZE
AVERAGE MON DEP:  0.0   TOTAL:           6.5"                                   
                        GRTST DAILY   2.8" ON JANUARY 9TH
HIGHEST: 88 ON 4/23     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:  35  OR 28.93%
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:  25                                  
MIN 32 OR BELOW:  43    0.50 INCH OR MORE:   5                                  
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0                                  

[HDD (BASE 65) ]                                   [# DAYS WITH]
TOTAL         2139.0    CLEAR  (SCALE 0-3)  40     42 FOG                          
                        PTCLDY (SCALE 4-7)  59      1 DENSE FOG    [VSBY 1/4 MILE OR LESS]
                        CLOUDY (SCALE 8-10) 22      4 THUNDERSTORMS              
                                                    4 # OF THUNDERSTORMS
[CDD (BASE 65) ]                                    8 SNOW                         
TOTAL           72.0                                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