Portsmouth Weather Records Service
 

Local Climatological Data
*Data Is Subject to Correction by PWRS

Station:  PORTSMOUTH, VIRGINIA
Month:   JANUARY Year: 2004
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:     JANUNARY  
                                          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  58  34   46.0   +2  19.0   0.0 0.00 0.0    0 045  2.9 045 15 0439 0256  78  38  SU                         
 2  64  42   53.0  +11  12.0   0.0    T 0.0    0 270  4.7 203 18 0301 0123  74  49  SU         -SHRA
 3  76  47   61.5  +19   3.5   0.0 0.00 0.0    0 225  6.0 225 20 0126 0006  85  52  PC         UNSEASONABLY WARM
 4  78  61   69.5  +27   0.0   4.5 0.00 0.0    0 248  9.0 225 29 0025 9899  93  59  PC         UNSEASONABLY WARM
 5  75  48   61.5  +21   3.5   0.0 0.43 0.0    0 225  7.0 225 29 9961 9777  95  65  PC 13      UNSEASONABLY WARM FROPA SHRA
 6  49  33   41.0    0  24.0   0.0 0.00 0.0    0 360  6.6 315 26 0288 9961  85  33  SU         COLDER
 7  36  23   29.5  -13  35.5   0.0 0.00 0.0    0 270  6.5 315 23 0442 0299  41  24  SU         COLD DRY
 8  40  23   31.5   -8  33.5   0.0    T   T    T 248  2.5 293 16 0423 0273  76  27  PC         -SN
 9  35  30   32.5   -7  32.5   0.0 0.25 2.8  2.8 023  3.0 023 22 0273 0140  85  70   C 1       SN FROPA
10  30  18   24.0  -15  41.0   0.0    T   T  1.5 360  9.6 360 25 0411 0201  70  46  PC         SHSN (BAY EFFECT) COLD
11  32  17   24.5  -13  40.5   0.0 0.00 0.0  1.0 360  4.5 270 15 0498 0240  61  33  SU         COLD
12  56  26   41.0   +2  24.0   0.0 0.00 0.0    0 225  8.0 248 30 0240 9991  69  38  SU         BREEZY MILDER
13  58  30   44.0   +3  21.0   0.0 0.00 0.0    0 270  5.4 270 31 0103 9909  83  31  SU 1       -FROST BREEZY FROPA
14  42  30   36.0   -4  29.0   0.0 0.00 0.0    0 158  4.8 023 18 0225 9673  77  38  SU         COLDER
15  42  25   33.5   -6  31.5   0.0 0.00 0.0    0 360  6.3 360 32 9998 9529  78  42  SU         FROPA COLDER FROST
16  37  22   29.5   -8  35.5   0.0 0.00 0.0    0 360  7.3 315 26 0178 9998  76  19  SU         FROPA BREEZY COLD
17  45  26   35.5   -3  29.5   0.0 0.00 0.0    0 360  4.3 338 21 0216 9958  46  26  PC         DRY
18  55  35   45.0   +5  20.0   0.0 0.39 0.0    0 360  5.9 360 25 9958 9345  93  44   C 1       RA DZ FROPA
19  39  27   33.0   -4  32.0   0.0 0.00 0.0    0 360  5.9 360 28 9998 9967  71  39  SU         COLDER
20  36  24   30.0   -8  35.0   0.0 0.00 0.0    0 360  8.0 360 28 0210 9998  48  30  SU         BREEZY COLD DRY
21  35  22   28.5   -8  36.5   0.0 0.00 0.0    0 360  3.9 270 19 0266 0088  52  28  SU         COLD DRY
22  55  27   41.0   +3  24.0   0.0 0.00 0.0    0 225  6.5 248 24 0088 9737  58  29  PC         BREEZY MILDER DRY FROPA
23  39  24   31.5   -9  33.5   0.0 0.00 0.0    0 360  5.3 293 20 0085 9860  49  26  PC         COLDER DAY
24  50  26   38.0   -5  27.0   0.0 0.00 0.0    0 023  6.5 023 25 0191 9799  71  33  PC         FROPA BREEZY COLDER
25  32  21   26.5  -14  38.5   0.0 0.55 2.5  2.5 045  7.3 360 21 0400 0191  93  41   C 14      COLD SN 
26  35  29   32.0   -6  33.0   0.0 0.08   T  1.0 360  4.2 360 18 0129 0007  91  86   C 146     COLD DAMP -FZRA -FZDZ -RA DZ
27  36  31   33.5   -6  31.5   0.0 0.03 0.0    T 360  6.2 270 25 0007 9630  91  87   C 1       -RA DZ COLD DAMP FROPA
28  35  27   31.0   -9  34.0   0.0 0.00 0.0    T 270  9.6 270 33 0017 9747  88  42  SU         WINDY COLD
29  49  28   38.5   -1  26.5   0.0 0.00 0.0    0 270  8.5 270 30 0013 9833  54  32  SU         BREEZY MILDER
30  49  27   38.0   -3  27.0   0.0    T 0.0    0 360  6.5 270 26 9848 9687  67  37  PC         -SHRA FROPA COLDER
31  36  20   28.0  -13  37.0   0.0 0.00 0.0    0 360  4.2 270 18 0267 9848  65  27  SU         BREEZY COLD
===============================================================================================================================
SM                     851.0   4.5 1.73 5.3      
================================================================================================================================
AV 46.3 29.1 37.7  -2.2            0.06          272  6.0 259 24 0181 9935  73  41 
===============================================================================================================================
NOTES:
WINDS IN M.P.H.
                      
  CLIMATOLOGICAL DATA (WS-TYPE FORM: F-6) , PAGE 2

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

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

AVERAGE MAXIMUM: 46.3   TOTAL FOR MONTH:   1.73"           1 = FOG                      
AVERAGE MAX DEP: -2.2   DPTR FM NORMAL:   -2.20" OR  44%   2 = FOG REDUCING VISIBILITY  
AVERAGE MINIMUM: 29.1   GRTST 24HR  0.59" ON 25-26TH           TO 1/4 MILE OR LESS      
AVERAGE MIN DEP: -2.4   GRTST DAILY 0.55" ON 25TH          3 = THUNDER
AVERAGE MONTHLY: 37.7   SNOW, ICE PELLETS, GLAZE           4 = ICE PELLETS              
AVERAGE MON DEP: -2.2   TOTAL MONTH: 5.3"                  5 = HAIL                     
                        GRTST DAILY   2.8" ON 9TH          6 = GLAZE OR RIME            
HIGHEST: 78 ON      4   GRTST 24HR    2.8" ON 8-9TH        7 = BLOWING DUST OR SAND:    
LOWEST:  17 ON     11   GRTST DEPTH:  2.8" ON 9TH              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:   3    0.01 INCH OR MORE:   6 OR 19.35%
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   4                                  
MIN 32 OR BELOW:  24    0.50 INCH OR MORE:   1                                  
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0                                  

[HDD (BASE 65) ]                                   [# DAYS WITH]
TOTAL THIS MO. 851.0    CLEAR  (SCALE 0-3)  16      7 FOG                          
                        PTCLDY (SCALE 4-7)  10      0 DENSE FOG    [VSBY 1/4 MILE OR LESS]
SEASONAL      1971.5    CLOUDY (SCALE 8-10)  5      1 THUNDERSTORMS              
                                                    1 # OF THUNDERSTORMS
[CDD (BASE 65) ]                                    4 SNOW                         
TOTAL THIS MO.   4.5                                2 FROST
                        [PRESSURE DATA]                       [AVERAGE SKY COVER]
SEASONAL TOTAL   4.5    HIGHEST SLP 30.498" ON THE 11TH              33.06%     
                        LOWEST  SLP 29.345" ON THE 18TH      
                        AVERAGE SLP 30.058"
[STATION RECORDS]

3RD  - TEMPERATURE MAXIMUM 76 [PREVIOUS 73 2000]
4TH  - TEMPERATURE MAXIMUM 78 [PREVIOUS 76 2000]
4TH  - TEMPERATURE MAXIMUM MINIMUM 61 [PREVIOUS 53 2000]
5TH  - TEMPERATURE MAXIMUM 75 [PREVIOUS 71 1997]
9TH  - PRECIPITATION SNOWFALL 2.8" [PREVIOUS 1/4" 1978]
25TH - TEMPERATURE MINIMUM MAXIMUM 32 [PREVIOUS 35 2000]

7TH DRIEST JANUARY SINCE 1976
10TH COLDEST JANUARY SINCE 1976

YEAR-TO-DATE

[TEMPERATURE DATA]      [PRECIPITATION DATA]

AVERAGE MAXIMUM: 46.3   TOTAL FOR YEAR:    1.73"
AVERAGE MAX DEP: -2.2   DPTR FM NORMAL:   -2.20" OR  44%                         
AVERAGE MINIMUM: 29.1   GRTST 24HR  0.55" ON  JANUARY 25TH             
AVERAGE MIN DEP: -2.4   GRTST DAILY 0.59" ON  JANUARY 25-26TH                    
AVERAGE MONTHLY: 37.7   SNOW, ICE PELLETS, GLAZE
AVERAGE MON DEP: -2.2   TOTAL:           5.3"                                   
                        GRTST DAILY   2.8" ON JANUARY 9TH
HIGHEST: 78 ON  1/4     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:   6  OR 19.35%
MAX 90 OR ABOVE:   0    0.10 INCH OR MORE:   4                                  
MIN 32 OR BELOW:  24    0.50 INCH OR MORE:   1                                  
MIN  0 OR BELOW:   0    1.00 INCH OR MORE:   0                                  

[HDD (BASE 65) ]                                   [# DAYS WITH]
TOTAL          851.0    CLEAR  (SCALE 0-3)  16      7 FOG                          
                        PTCLDY (SCALE 4-7)  10      0 DENSE FOG    [VSBY 1/4 MILE OR LESS]
                        CLOUDY (SCALE 8-10)  5      1 THUNDERSTORMS              
                                                    1 # OF THUNDERSTORMS
[CDD (BASE 65) ]                                    4 SNOW                         
TOTAL            4.5                                2 FROST                     
                        [PRESSURE DATA]                                         
                        HIGHEST SLP 30.498" ON THE 11TH OF JANUARY
                        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