Portsmouth Weather Records Service
 

Local Climatological Data
*Data Is Subject to Correction by PWRS

Station:  PORTSMOUTH, VIRGINIA
Month:   DECEMBER Year: 2005
Latitude: 36 48 04 N    Longitude: 76 19 37 W
Station Elevation: 20 FT 
Standard Time: EST
  LOCAL CLIMATOLOGICAL DATA (WS-TYPE FORM: F-6)

                                          STATION:   PORTSMOUTH, VIRGINIA
                                          MONTH:     DECEMBER
                                          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  50  39   44.5   -5  20.5   0.0  0.01   0    0 023  4.8 023 24 0027 9791  87  68  PC         -RA
 2  49  35   42.0   -6  23.0   0.0  0.00   0    0 270  7.5 270 33 0117 9971  87  36  SU         WINDY
 3  48  31   39.5   -7  25.5   0.0  0.12   0    0 320  2.8 270 15 0253 0057  92  39  PC         -SHRA (EVE)
 4  64  39   51.5   +4  13.5   0.0  0.33   0    0 203  7.6 025 25 0123 9831 100  75  PC         SHRA FROPA
 5  44  39   41.5   -5  23.5   0.0  1.28   0    0 045  8.0 045 25 0185 9857 100  90   C 1       RA DAMP COLD
 6  41  29   35.0  -12  30.0   0.0  0.15   0    0 360  5.0 360 23 0360 9878 100  70  PC 1       -RA FROPA
 7  45  27   36.0  -10  29.0   0.0  0.00   0    0 270  2.2 270 20 0634 0350  99  59  SU 1       +FROST
 8  41  32   36.5  -10  28.5   0.0  0.00   0    0 045  4.1 023 19 0755 0309  84  58  PC
 9  53  34   43.5   -2  21.5   0.0  0.55   0    0 360  6.0 360 27 0309 0023 100  57  PC 1       WARMFROPA RA FROPA
10  47  26   36.5   -9  28.5   0.0  0.00   0    0 158  3.1 158 17 0258 9822  95  56  SU         FROST
11  53  37   45.0   +1  20.0   0.0  0.00   0    0 270  6.5 270 26 9822 9669  98  48  SU
12  53  35   44.0    0  21.0   0.0  0.02   0    0 270  4.8 270 25 9996 9796  88  47  PC         -SHRA FROPA
13  39  30   34.5  -11  30.5   0.0  0.00   0    0 360  7.8 023 25 0401 9995  85  41  SU         COLDER
14  37  28   32.5  -12  32.5   0.0  0.00   0    0 023  4.8 023 18 0472 0321  87  61  PC         -SCT FROST COLD
15  58  35   46.5   +1  18.5   0.0  0.74   0    0 045  4.8 158 28 0321 9660 100  80   C 1       RA WARMFROPA
16  59  38   48.5   +4  16.5   0.0  0.03   0    0 270  4.7 270 25 0263 9631 100  57  PC         -RA FROPA
17  46  36   41.0   -3  24.0   0.0  0.00   0    0 045  3.7 045 17 0512 0263  86  56  PC
18  43  32   37.5   -5  27.5   0.0  0.10   0    0 045  4.7 023 19 0507 0339  93  72  PC 14      -RA -PL FROST (EVE)
19  50  31   40.5   -2  24.5   0.0  0.00   0    0 023  2.0 040 15 0339 0196  99  57  SU 1       +FROST
20  44  25   34.5   -7  30.5   0.0  0.00   0    0 023  2.0 270 19 0293 0165  91  44  SU         FROST
21  40  25   32.5   -9  32.5   0.0  0.00   0    0 023  3.0 023 17 0294 0204  87  60  SU         -FROST COLD
22  45  22   33.5   -8  31.5   0.0  0.00   0    0 203  1.9 045 18 0367 0207  98  54  SU         FROST 
23  58  29   43.5   -1  21.5   0.0  0.00   0    0 203  5.5 225 20 0207 0019  88  37  SU         FROST MILDER
24  63  37   50.5   +5  15.0   0.0  0.00   0    0 203  5.4 225 17 0027 9934  67  29  SU         PLEASANT DRY
25  60  43   51.5  +11  13.5   0.0  1.28   0    0 158  4.1 180 23 9934 9502 100  66   C 13      RA TSRA FROPA
26  54  42   48.0  +10  17.0   0.0  0.00   0    0 270  9.4 270 28 9824 9473  98  58  SU         BREEZY 
27  51  33   42.0   +3  23.0   0.0  0.00   0    0 270  3.4 270 20 0027 9824  93  54  SU
28  62  36   49.0   +7  16.0   0.0  0.00   0    0 158  3.9 180 19 9990 9665  98  52  SU         -SCT FROST ROOFTOPS MILDER
29  54  44   49.0   +6  16.0   0.0  0.12   0    0 270  5.1 270 20 9672 9392 100  76  PC 1       SHRA FROPA
30  55  35   45.0   +4  20.0   0.0  0.00   0    0 270  2.8 270 16 9925 9672  94  60  SU
31  54  38   46.0   +3  19.0   0.0  0.03   0    0 158  2.9 203 16 9910 9737  99  85  PC 1       SHRA FROPA
==============================================================================================================================
SUM                    714.0   0.0  4.76   0    0          
==============================================================================================================================
AV 50.3 33.6 42.0  -2.1            +1.68   0    0 146 4.65 150 21 0198 9921  93  58
==============================================================================================================================
NOTES:
WINDS IN M.P.H.
                      
 CLIMATOLOGICAL DATA (WS-TYPE FORM: F-6)  

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

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

AVERAGE MAXIMUM: 50.3   TOTAL FOR MONTH:   4.76"           1 = FOG
AVERAGE MAX DEP: -2.4   DPTR FM NORMAL:   +1.68" OR 154%   2 = FOG REDUCING VISIBILITY
AVERAGE MINIMUM: 33.6   GRTST 24HR  1.40" ON 4-5TH               TO  MILE OR LESS
AVERAGE MIN DEP: -1.9   GRTST DAILY 1.28" ON 5TH & 25TH    3 = THUNDER
AVERAGE MONTHLY: 42.0   SNOW, ICE PELLETS, GLAZE           4 = ICE PELLETS              
AVERAGE MON DEP: -2.1   TOTAL MONTH:  0.00"                5 = HAIL
                        GRTST DAILY   0.00" ON --          6 = GLAZE OR RIME            
HIGHEST:  64 0N    4    GRTST 24HR    0.00" ON --          7 = BLOWING DUST OR SAND:    
LOWEST:   22 ON   22    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:  13 OR 41.94%
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   9                                  
MIN 32 OR BELOW:  13    0.50 INCH OR MORE:   4                                  
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   2                                  

[HDD (BASE 65) ]                                   [# DAYS WITH]
TOTAL THIS MO. 714.0 
                        CLEAR  (SCALE 0-3)  15     10 FOG
                        PTCLDY (SCALE 4-7)  13      0 DENSE FOG    [VSBY  MILE OR LESS]
SEASONAL      1157.5    CLOUDY (SCALE 8-10)  3      1 THUNDERSTORMS
                                                    1 # OF THUNDERSTORMS
[CDD (BASE 65) ]                                    0 SNOW                         
TOTAL THIS MO.    0.0                              10 FROST
                        [PRESSURE DATA]                       [AVERAGE SKY COVER]
SEASONAL TOTAL 1689.0   HIGHEST SLP 30.755" ON THE  8TH                  35.00% 
                        LOWEST  SLP 29.392" ON THE 29TH  
                        AVERAGE SLP 30.059"                   [AVERAGE RELATIVE HUMIDITY]
                                                                         75.73%
[STATION RECORDS]

 2ND - WIND - MAXIMUM GUST - 33 MPH [PREVOUS 31 MPH 1989]
14TH - TEMPERATURE - MINIMUM MAXIMUM - 37 [PREVIOUS 40 1989]

YEAR-TO-DATE

[TEMPERATURE DATA]      [PRECIPITATION DATA]

AVERAGE MAXIMUM: 68.8   TOTAL FOR YEAR:   50.46"
AVERAGE MAX DEP: -0.7   DPTR FM NORMAL:   +2.15" OR 104%
AVERAGE MINIMUM: 52.0   GRTST 24HR  6.53" ON  OCTOBER 7TH-8TH
AVERAGE MIN DEP: +0.7   GRTST DAILY 6.05" ON  OCTOBER 8TH                  
AVERAGE MONTHLY: 60.4   SNOW, ICE PELLETS, GLAZE
AVERAGE MON DEP:  0.0   TOTAL:           2.5"                                   
                        GRTST DAILY   0.8" ON  1/21           
HIGHEST: 100 ON  7/27   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: 124  OR 33.97%
MAX 90 OR ABOVE:  26    0.10 INCH OR MORE:  75                                  
MIN 32 OR BELOW:  53    0.50 INCH OR MORE:  30                                  
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:  12 
                                                        
[HDD (BASE 65) ]                                   [# DAYS WITH]
TOTAL         3375.0    CLEAR  (SCALE 0-3) 113    178 FOG                          
                        PTCLDY (SCALE 4-7) 200      0 DENSE FOG    [VSBY  MILE OR LESS]
                        CLOUDY (SCALE 8-10) 52     26 THUNDERSTORMS              
                                                   28 # OF THUNDERSTORMS
[CDD (BASE 65) ]                                   14 SNOW                         
TOTAL         1689.0                               24 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