Monthly & Yearly Summary - January 2002

January & Yearly 2002

Graphs follow the table summary!

Portsmouth Weather Records Service

Local Climatological Data
*Data Are Subject to Correction by PWRS

Station: PORTSMOUTH, VIRGINIA
Month: JANUARY Year: 2002
Latitude: 36° 81' N Longitude: 76° 33' W
Station Elevation: 20 FT
Standard Time: EASTERN STANDARD TIME

Temperature

Degree Days

Precipitation

Wind

Peak

Sky & Weather

Date

Max

Min

Dep

HDD

CDD

Total

Snow

Depth

Avg

Dir

Min Chill

Wind

Type

Types

33.0

-10

32.0

0.0

4.9

14.0

N 19

FROPA COLD

32.0

-10

33.0

0.10

1.0

3.5

10.5

N 18

31.0

-11

34.0

0.87

8.0

9.0

10.5

2.0

N 28

SN PL BR
BLSN -SHSN

31.5

-10

33.5

0.0

9.0

6.3

NNW

2.0

NNW 26

FROPA

34.5

-5

30.5

0.0

5.0

4.0

SSW

22.7

SSW 14

-PC

NOT AS COLD

38.0

-3

27.0

0.82

0.0

2.0

4.3

16.7

SW 25

RA BR FROPA

35.0

-8

30.0

0.01

0.0

TRACE

6.5

WSW

18.0

WSW 20

-RA BR

33.0

-7

32.0

0.0

TRACE

4.1

WSW

16.4

N 17

COLD

42.0

23.0

0.0

8.0

SSW

20.4

SSW 22

-PC

-FROST

55.5

+17

9.5

0.0

5.6

WSW

36.2

WSW 24

MILD

44.5

20.5

0.0

4.6

33.8

N 25

-SHRA FROPA

40.0

25.0

0.14

0.0

2.5

WSW

27.0

S 15

FROST -RA

44.5

20.5

0.20

0.0

7.3

WSW

34.4

W 33

RA FROPA

41.5

23.5

0.07

0.0

3.5

SSW

27.4

S 16

-FROST -RA

49.5

15.5

0.0

4.9

WSW

32.1

WSW 24

BR FROPA

41.5

23.5

0.0

2.7

28.4

N 16

-FROST

47.0

18.0

0.0

3.5

WSW

31.8

WSW 20

42.0

23.0

0.08

0.0

3.6

32.6

NNE 16

FROPA -RA

38.0

27.0

1.72

0.0

3.9

25.4

NNE 21

RA BR

37.0

-1

28.0

0.12

0.0

4.9

16.8

NNW 26

-RA BR FROPA

41.5

23.5

0.17

0.0

3.5

WSW

30.8

WSW 17

RA BR FROPA

44.5

20.5

0.0

4.0

24.6

WSW 18

-FROST

49.0

16.0

0.29

0.0

5.4

SSW

39.3

S 22

SHRA BR FROPA

61.0

+17

4.0

0.0

8.3

SSW

46.2

SW 38

BR-SHRA
WINDY MILD

47.0

18.0

0.33

0.0

5.1

24.6

N 24

SHRA BR FROPA

45.0

20.0

0.0

1.8

27.8

SSW 15

FROST

50.5

+10

14.5

0.0

2.5

SSW

32.2

SSW 16

-FROST

59.5

+19

5.5

0.01

0.0

1.9

48.0

N 18

-SHRA BR

63.0

+23

2.0

0.0

2.9

47.7

N 19

-PC

71.0

+29

6.0

0.0

6.3

SSW

57.2

SSW 23

-PC

RECORD WARMTH

62.0

+20

3.0

0.0

2.2

NNE

52.1

SSW 16

BR FROPA

Temperature Data
AVERAGE HIGH : 54.5º     DEPARTURE:      + 5.9º
AVERAGE LOW : 34.9º     DEPARTURE:       + 3.2º
MEAN:                44.7º     DEPARTURE:       + 4.6º

HIGHEST: 81° on the 30th
LOWEST: 23º on the 5th

Number of Days:
00 - MAX 100º OR ABOVE
00 - MAX 32º OR BELOW
00 - MAX 90º OR ABOVE
17 - MIN 32º OR BELOW
00 - MIN 0º OR BELOW

Heating Degree Days
TOTAL THIS MONTH: 636.0 from 30 days
SEASONAL TOTAL: 1592.5

Cooling Degree Days
TOTAL THIS MONTH: 6.0 from 1 day
SEASONAL TOTAL: 6.0

NUMBER OF:

04 - Days Cloudy
24 - Days Partly Cloudy
03 - Days Clear or Sunny

13 - Days with Fog/Ground Fog
00 - Days with Dense Fog

07 - Days with Frost

00 - Days with Thunderstorms
00 - Thunderstorms

02 - Days with some type of Snowfall

Precipitation Data
TOTAL FOR THE MONTH: 4.93"
DEPARTURE FROM NORMAL: + 0.87" or 122%
GREATEST DAILY: 1.72" on the 19th
GREATEST IN 24-HR PERIOD: 1.86" on the 19th & 20th
AVERAGE DAILY: 0.16"
NORMAL DAILY: 0.13"
# DAYS WITH MEASURABLE PRECIPITATION: 14
YEAR-TO-DATE: 4.93" DEPARTURE: + 0.87" or 122% of the norm

MAXIMUM FOR JANUARY: 11.12" in 1987 --> (since
MINIMUM FOR JANUARY: 1.07" in 1981 --> 1977)
NORMAL FOR JANUARY: 4.06"

Snowfall, Ice Pellets
TOTAL FOR THE MONTH: 9.0"
GREATEST IN 24 HOURS: 9.0" on the 2nd-3rd
GREATEST DEPTH ON GROUND: 9.0" on the 3rd
JANUARY MAX = 9.0" in 2002 [previously 8.9" in 1980]

Number of Days:
WITH 0.01" OR MORE PRECIP: 14
WITH 0.10" OR MORE PRECIP: 10
WITH 0.50" OR MORE PRECIP: 3
WITH 1.00" OR MORE PRECIP: 1

Pressure Data
HIGHEST SEA-LEVEL: 30.480" on the 22nd
LOWEST SEA-LEVEL: 29.450" on the 6th

Wind
PEAK WIND GUST: 38 mph from the SW on the 24th
AVERAGE SPEED: 4.60 mph from a dominant SSW direction

JANUARY STATION RECORDS:

2nd - Daily Snowfall - 1.00" [no previous snowfall recorded on this date]

2nd - Tie of Minimum Maximum temperature - 36° [previously in 2001]

3rd - Daily Snowfall - 8.00" [previously a TRACE in 1996]

3rd - Monthly Snowfall - 9.0" in 2002 [previously 8.9" in 1980]

3rd - Daily Minimm Maximum Temperature - 33° [previously 36° in 2001]

6th - Daily Rainfall - 0.82" [previously 0.51" in 1990]

10th - Daily Maximum Temperature - 66° [previously 63° in 1983]

24th - Daily Maximum Temperature TIE - 69° [previously in 1993]

24th - Daily Maximum Minimum Temperature - 53° [previously 49° in 1990]

27th - Daily Maximum Temperature - 69° [previously 64° in 1989]

28th - Daily Maximum Temperature TIE - 71° [previously in 1999]

29th - Daily Maximum Temperature - 76° [previously 70° in 1989]

29th - Daily Maximum Minimum Temperature - 50° [previously 41° in 1994]

30th - Daily Maximum Temperature - 81° [previously 69° in 1989]

30th - January Maximum Temperature Record - 81° [previously 77° on the 2nd in 1985]

30th - Daily Maximum Minimum Temperature - 61° [previously 56° in 1989]

31st - Daily Maximum Temperatuer - 72° [previously 70° in 1982]

YEAR-TO-DATE 2002 through 1/31/02

Temperature Data
AVERAGE HIGH : 54.5º   DEPARTURE:   +5.9º
AVERAGE LOW : 34.9º   DEPARTURE: +3.2º
MEAN:                44.7º   DEPARTURE:   +4.6º

HIGHEST: 81° on the 30th of January
LOWEST: 23º on 5th of January

Number of Days:
00 - MAX 100º OR ABOVE
00 - MAX 32º OR BELOW
00 - MAX 90º OR ABOVE
17 - MIN 32º OR BELOW
00 - MIN 0º OR BELOW

Heating Degree Days
TOTAL: 636.0

Cooling Degree Days
TOTAL: 6.0

NUMBER OF:

004 - Days Cloudy
024- Days Partly Cloudy
003 - Days Clear or Sunny

013 - Days with Fog/Ground Fog
000 - Days with Dense Fog

07 - Days with Frost

00 - Days with Thunderstorms
00 - Thunderstorms

02 - Days with some type of Snowfall

Precipitation Data
TOTAL: 4.93"
DEPARTURE FROM NORMAL: + 0.87" or 122%
GREATEST DAILY: 1.72" on the 19th of January
GREATEST IN 24-HR PERIOD: 1.86" on the 19th & 20th of January
AVERAGE DAILY: 0.16"
NORMAL DAILY: 0.13"
# DAYS WITH MEASURABLE PRECIPITATION: 14 or 45.16%

MAXIMUM: 4.93" in January
MINIMUM: 4.93" in January

Snowfall, Ice Pellets
TOTAL: 9.0"
GREATEST IN 24 HOURS: 9.0" on January 2nd - 3rd
GREATEST DEPTH ON GROUND: 9.0" on January 3rd

Number of Days:

WITH 0.01" OR MORE PRECIP: 14
WITH 0.10" OR MORE PRECIP: 10
WITH 0.50" OR MORE PRECIP: 03
WITH 1.00" OR MORE PRECIP: 01

Pressure Data
HIGHEST SEA-LEVEL: 30.480" on January 22nd
LOWEST SEA-LEVEL: 29.450" on January 6th

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 > 5/8 but <=6 statute miles and
below to 5/8 mile
DU   Dust (widespread)
DS   Duststorm
DZ   Drizzle
FC   Funnel Cloud
FC+ Tornado/waterspout
FG   Fog with visibility <= 5/8 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

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