Portsmouth Weather Records Service
 

Local Climatological Data
*Data Is Subject to Correction by PWRS

Station:  PORTSMOUTH, VIRGINIA
Month:   MAY Year: 2005
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:      2005
                                          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  70  55   62.5   -2   2.5   0.0  0.22   0    0 001  5.0 360 24 0049 9779  96  49  PC        FROPA SHRA
 2  69  47   58.0   -6   7.0   0.0     T   0    0 023  2.4 023 20 0067 9951  96  45  PC 18     -SHRA FROPA
 3  65  50   57.5   -6   7.5   0.0  0.00   0    0 023  4.4 023 23 0208 0060  70  39  PC
 4  65  44   54.5   -8  10.5   0.0  0.00   0    0 045  3.6 045 18 0430 0194  88  38  PC
 5  64  49   56.5   -7   8.5   0.0  0.00   0    0 045  4.3 045 21 0482 0321  79  40  PC
 6  55  49   52.0  -13  13.0   0.0  1.76   0    0 023  9.3 023 47 0321 9958  97  77   C 1      RA WINDY
 7  69  49   59.0   -7   6.0   0.0  0.04   0    0 360  5.1 360 29 9963 9877  95  46  PC        -RA
 8  74  52   63.0   -2   2.0   0.0  0.00   0    0 360  4.1 320 23 9965 9877  83  34  SU
 9  73  48   60.5   -5   4.5   0.0  0.00   0    0 045  2.8 045 15 0048 9953  93  44  SU
10  72  50   61.0   -5   4.0   0.0  0.00   0    0 158  1.7 045 15 0104 0042  93  55  SU 1
11  83  51   67.0    0   0.0   2.0  0.00   0    0 158  1.9 270 16 0072 9981  98  55  PC 18     HZ
12  80  59   69.5   +1   0.0   4.5  0.00   0    0 045  5.0 045 22 0268 0011  88  52  PC 18     HZ FROPA
13  63  56   59.5   -8   5.5   0.0  0.00   0    0 045  3.2 045 17 0355 0219  77  54   C 1      WARMFROPA
14  82  56   69.0   +3   0.0   4.0  0.00   0    0 203  4.5 203 21 0219 9895  85  58  PC 8      HZ
15  82  63   72.5   +6   0.0   7.5  0.78   0    0 203  5.0 203 19 9895 9783  89  51  PC 183    HZ DSTLTG TSRA
16  71  61   66.0   -1   0.0   1.0  0.37   0    0 045  4.4 360 22 0035 9826  91  42  PC 1      SHRA FROPA
17  71  57   64.0   -4   1.0   0.0  0.00   0    0 045  3.1 045 18 0121 0012  78  48  PC
18  73  54   63.5   -6   1.5   0.0  0.00   0    0 158  1.4 045 15 0133 0039  80  52  PC 8
19  68  58   63.0   -6   2.0   0.0  0.09   0    0 158  2.9 158 17 0098 9966  85  69   C 1      SHRA
20  75  55   65.0   -3   0.0   0.0  0.46   0    0 180  7.7 023 29 9966 9664  85  57   C 1      SHRA FROPA DZ
21  70  54   62.0   -7   3.0   0.0  0.00   0    0 023  7.6 023 24 9933 9824  78  44  PC
22  78  52   65.0   -3   0.0   0.0  0.00   0    0 270  3.4 270 23 9912 9696  85  36  PC
23  80  58   69.0   -1   0.0   4.0  0.27   0    0 270  3.6 045 33 9698 9493  81  44  PC        SHRA DSTLTG FROPA
24  62  52   57.0  -14   8.0   0.0  0.41   0    0 023  2.4 023 20 9757 9543  86  69   C 1      SHRA BR FROPA
25  59  52   55.5  -15   9.5   0.0  0.09   0    0 360  5.6 360 20 9782 9730  79  63   C 1      BR SHRA
26  75  52   63.5   -7   1.5   0.0  0.01   0    0 270  4.9 360 25 9836 9725  81  51  PC 1      -SHRA
27  83  57   70.0   +2   0.0   5.0  0.00   0    0 270  2.8 270 18 9900 9825  83  40  SU 8      HZ
28  76  64   70.0   +1   0.0   5.0  0.05   0    0 270  2.2 270 21 9897 9818  89  58  PC 18     -HZ SHRA
29  77  56   66.5   -4   0.0   1.5  0.00   0    0 270  1.7 270 17 9967 9888  83  43  SU
30  76  59   67.5   -4   0.0   2.5  0.00   0    0 158  1.2 180 12 9983 9920  82  56  PC
31  76  60   68.0   -5   0.0   3.0     T   0    0 023  3.4 023 19 0123 9936  86  41  PC        -SHRA FROPA
==============================================================================================================================
SUM                     97.5  40.0  4.55   0    0          
==============================================================================================================================
AV 72.1 54.2 63.1  -4.4            +0.41          123 3.89        0051 9897  86  20
==============================================================================================================================
NOTES:
WINDS IN M.P.H.
                      
 CLIMATOLOGICAL DATA (WS-TYPE FORM: F-6) , PAGE 2

                                          STATION:  PORTSMOUTH, VIRGINIA
                                          MONTH:    MAY
                                          YEAR:     2005
                                          LATITUDE:   36 48 04 N                   
                                          LONGITUDE:  76 19 40 W                   

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

AVERAGE MAXIMUM: 72.1   TOTAL FOR MONTH:   4.55"           1 = FOG
AVERAGE MAX DEP: -5.1   DPTR FM NORMAL:   +0.41" OR 110%   2 = FOG REDUCING VISIBILITY
AVERAGE MINIMUM: 54.2   GRTST 24HR  1.80" ON  6-7TH            TO 1/4 MILE OR LESS
AVERAGE MIN DEP: -3.5   GRTST DAILY 1.76" ON  6TH          3 = THUNDER
AVERAGE MONTHLY: 63.1   SNOW, ICE PELLETS, GLAZE           4 = ICE PELLETS              
AVERAGE MON DEP: -4.4   TOTAL MONTH:  0.0"                 5 = HAIL
                        GRTST DAILY   0.0"  ON ---         6 = GLAZE OR RIME            
HIGHEST: 83 ON 11,27    GRTST 24HR    0.0"  ON ---         7 = BLOWING DUST OR SAND:    
LOWEST:  44 ON    4     GRTST DEPTH:  0.0"  ON ---             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:  12 OR 38.71%
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   7                                  
MIN 32 OR BELOW:   0    0.50 INCH OR MORE:   2                                  
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   1                                  

[HDD (BASE 65) ]                                   [# DAYS WITH]
TOTAL THIS MO.  97.5 
                        CLEAR  (SCALE 0-3)   5     14 FOG
                        PTCLDY (SCALE 4-7)  20      0 DENSE FOG    [VSBY  MILE OR LESS]
SEASONAL      3365.0    CLOUDY (SCALE 8-10)  6      1 THUNDERSTORMS
                                                    1 # OF THUNDERSTORMS
[CDD (BASE 65) ]                                    0 SNOW                         
TOTAL THIS MO.  40.0                                0 FROST
                        [PRESSURE DATA]                       [AVERAGE SKY COVER]
SEASONAL TOTAL  69.5    HIGHEST SLP 30.482" ON THE  5TH                 48.06% 
                        LOWEST  SLP 29.493" ON THE 23RD 
                        AVERAGE SLP 29.974"                   [AVERAGE RELATIVE HUMIDITY]
[STATION RECORDS]                                                       67.89%

 6TH - DAILY PRECIPITATION - 1.76" [PREVIOUSLY 0.83" 1996]
15TH - DAILY PRECIPITATION - 0.78" [PREVIOUSLY 0.43" 1978]
24TH - TEMPERATURE - MINIMUM MAXIMUM - 62 [PREVIOUSLY 63 1985]
25TH - TEMPERATURE - MINIMUM MAXIMUM - 59 [PREVIOUSLY 70 1988]

YEAR-TO-DATE

[TEMPERATURE DATA]      [PRECIPITATION DATA]

AVERAGE MAXIMUM: 59.7   TOTAL FOR YEAR:   15.71"
AVERAGE MAX DEP: -1.8   DPTR FM NORMAL:   -3.21 OR 83%
AVERAGE MINIMUM: 41.9   GRTST 24HR  1.80" ON  MAY 6-7TH    
AVERAGE MIN DEP: -0.5   GRTST DAILY 1.76" ON  MAY 6TH                      
AVERAGE MONTHLY: 50.8   SNOW, ICE PELLETS, GLAZE
AVERAGE MON DEP: -1.2   TOTAL:           2.5"                                   
                        GRTST DAILY   0.8" ON  1/21           
HIGHEST: 88 ON  4/20    GRTST 24HR    0.8" ON  1/21 
                        GRTST DEPTH:  0.8" ON  1/21            
LOWEST:  16 ON  1/19 

[NO. OF DAYS WITH]      [PRECIP  - DAYS WITH MEASURABLE]                        
                                                                                
MAX 32 OR BELOW:   3    0.01 INCH OR MORE:  51  OR 33.77%
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:  29                                  
MIN 32 OR BELOW:  35    0.50 INCH OR MORE:  10                                  
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   2

[HDD (BASE 65) ]                                   [# DAYS WITH]
TOTAL         2210.5    CLEAR  (SCALE 0-3)  31     58 FOG                          
                        PTCLDY (SCALE 4-7)  93      0 DENSE FOG    [VSBY  MILE OR LESS]
                        CLOUDY (SCALE 8-10) 27      5 THUNDERSTORMS              
                                                    5 # OF THUNDERSTORMS
[CDD (BASE 65) ]                                   14 SNOW                         
TOTAL           69.5                               11 FROST                     
                        [PRESSURE DATA]                                         
                        HIGHEST SLP 30.789" ON JANUARY 28TH     
                        LOWEST  SLP 29.029" ON MARCH 8TH             
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