2001 NORFOLK, VIRGINIA (ORF)



The city of Norfolk, Virginia, is located near the coast and the southern border of the state. It is almost surrounded by water, with the Chesapeake Bay immediately to the north, Hampton Roads to the west, and the Atlantic Ocean only 18 miles to the east. It is traversed by numerous rivers and waterways and its average elevation above sea level is 13 feet. There are no nearby hilly areas and the land is low and level throughout the city. The climate is generally marine. The geographic location of the city with respect to the principal storm tracks, is especially favorable, being south of the average path of storms originating in the higher latitudes and north of the usual tracks of hurricanes and other tropical storms.

The winters are usually mild, while the autumn and spring seasons usually are delightful. Summers, though warm and long, frequently are tempered by cool periods, often associated with northeasterly winds off the Atlantic. Temperatures of 100 degrees or higher occur infrequently. Extreme cold waves seldom penetrate the area and temperatures of zero or below are almost nonexistent. Winters pass, on occasion, without a measurable amount of snowfall. Most of the snowfall in Norfolk is light and generally melts within 24 hours.

Based on the 1951–1980 period, the average first occurrence of 32 degrees Fahrenheit in the fall is November 17 and the average last occurrence in the spring is March 23.

NORMALS, MEANS, AND EXTREMES

NORFOLK, VA (ORF)

LATITUDE:    LONGITUDE:     ELEVATION (FT):    TIME ZONE:    WBAN: 13737

36 54′ 13″ N  76 11′ 31″ W  GRND:  66  BARO: � 0;69  EASTERN (UTC + 5)

2001 Norfolk, Virginia (ORF)

ELEMENT POR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC YEAR
TEMPERATURE F NORMAL DAILY MAXIMUM 30 47.3 49.7 57.9 66.9 75.3 82.9 86.4 85.1 79.6 69.5 61.2 52.2 67.8
MEAN DAILY MAXIMUM 54 48.7 50.9 58.1 68.0 75.9 83.5 87.2 85.5 80.1 70.1 61.3 52.3 68.5
HIGHEST DAILY MAXIMUM 53 78 82 88 97 100 101 103 104 99 95 86 80 104
YEAR OF OCCURRENCE 1970 1997 1990 1960 1991 1964 1993 1980 1983 1954 1974 1991 AUG 1980
MEAN OF EXTREME MAXS. 54 70.4 72.4 79.8 86.6 90.9 95.3 96.8 95.4 91.8 84.6 78.4 72.2 84.6
NORMAL DAILY MINIMUM 30 30.9 32.3 39.3 47.1 56.8 65.2 70.0 69.4 64.2 52.9 43.8 35.4 50.6
MEAN DAILY MINIMUM 54 32.3 33.5 39.8 48.0 57.3 65.8 70.9 69.8 64.3 53.1 43.6 35.5 51.2
LOWEST DAILY MINIMUM 53 -3 8 18 28 36 45 54 49 45 27 20 7 -3
YEAR OF OCCURRENCE 1985 1965 1980 1982 1966 1967 1979 1982 1967 1976 1950 1983 JAN 1985
MEAN OF EXTREME MINS. 54 17.0 19.9 26.9 35.1 44.4 54.4 61.6 60.3 52.1 38.5 29.4 21.0 38.4
NORMAL DRY BULB 30 39.1 41.0 48.6 57.0 66.1 74.1 78.2 77.2 71.9 61.2 52.5 43.8 59.2
MEAN DRY BULB 54 40.5 42.2 49.0 58.0 66.6 74.6 78.9 77.6 72.2 61.6 52.5 43.9 59.8
MEAN WET BULB 18 37.5 39.3 44.1 51.8 60.3 68.4 68.8 71.7 62.8 57.0 48.7 40.7 54.3
MEAN DEW POINT 18 31.0 32.6 37.2 45.4 55.1 64.5 65.7 68.7 59.5 52.3 43.1 34.6 49.1
NORMAL NO. DAYS WITH:
MAXIMUM 90 30 0.0 0.0 0.0 0.4 1.5 5.9 10.9 8.6 2.8 0.1 0.0 0.0 30.2
MAXIMUM 32 30 3.3 1.3 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 5.7
MINIMUM 32 30 18.0 15.5 6.0 0.4 0.0 0.0 0.0 0.0 0.0 0.2 3.0 13.1 56.2
MINIMUM 0 30 * 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
H/C NORMAL HEATING DEG. DAYS 30 803 672 508 249 51 0 0 0 11 164 380 657 3495
NORMAL COOLING DEG. DAYS 30 0 0 0 9 85 277 409 378 218 46 0 0 1422
RH NORMAL (PERCENT) 30 66 66 65 63 69 71 73 75 74 72 68 67 69
HOUR 01 LST 30 71 71 71 72 80 82 84 85 84 81 75 72 77
HOUR 07 LST 30 73 73 74 72 77 79 82 84 83 82 78 74 78
HOUR 13 LST 30 58 56 54 50 55 56 59 61 61 58 56 58 57
HOUR 19 LST 30 65 64 62 59 65 66 70 73 74 73 68 66 67
S PERCENT POSSIBLE SUNSHINE 32 53 56 60 63 62 67 62 62 61 58 56 54 60
W/O MEAN NO. DAYS WITH:
HEAVY FOG(VISBY 1/4 MI) 53 2.1 2.5 2.0 1.5 1.8 1.0 0.5 1.0 1.2 2.1 1.9 2.1 19.7
THUNDERSTORMS 53 0.4 0.6 1.9 2.7 5.0 5.6 8.1 6.5 2.7 1.3 0.5 0.4 35.7
CLOUDINESS MEAN:
SUNRISE-SUNSET (OKTAS) 48 5.0 5.0 4.9 4.6 4.9 4.7 4.7 4.6 4.5 4.2 4.4 4.8 4.7
MIDNIGHT-MIDNIGHT (OKTAS) 32 4.7 4.7 4.4 4.2 4.6 4.4 4.5 4.4 4.2 4.0 4.1 4.4 4.4
MEAN NO. DAYS WITH:
CLEAR 48 8.8 8.1 8.9 8.8 7.7 7.5 7.4 7.9 9.1 11.6 10.3 9.4 105.5
PARTLY CLOUDY 48 6.5 6.2 7.6 9.3 10.0 11.7 12.0 11.9 9.5 7.2 7.9 6.8 106.6
CLOUDY 48 15.7 13.9 14.5 11.9 13.3 10.8 11.6 11.3 11.5 12.2 11.7 14.8 153.2
PR MEAN STATION PRESSURE(IN) 29 30.10 30.09 30.00 30.00 29.99 29.99 30.01 30.00 30.00 30.10 30.09 30.09 30.04
MEAN SEA-LEVEL PRES. (IN) 18 30.11 30.11 30.05 30.00 30.01 30.01 30.02 30.03 30.07 30.11 30.12 30.12 30.06
WINDS MEAN SPEED (MPH) 49 11.3 11.8 12.2 11.8 10.3 9.6 9.0 8.7 9.7 10.1 10.4 10.8 10.5
PREVAIL. DIR (TENS OF DEGS) 33 36 36 04 22 22 23 23 22 05 05 23 23 23
MAXIMUM 2-MINUTE:
SPEED (MPH) 5 43 41 41 36 40 36 36 46 36 29 31 37 46
DIR. (TENS OF DEGS) 02 07 22 06 07 28 03 11 06 01 20 26 11
YEAR OF OCCURRENCE 2000 1998 1999 1998 2000 1998 1997 1998 1999 1999 1999 2000 AUG 1998
MAXIMUM 5-SECOND:
SPEED (MPH) 5 54 53 49 44 52 58 51 67 46 40 43 47 67
DIR. (TENS OF DEGS) 02 34 22 03 06 29 04 22 29 33 17 25 22
YEAR OF OCCURRENCE 1998 1999 1999 2000 2000 1998 1997 2000 1999 1999 2000 2000 AUG 2000
PRECIPITATION NORMAL (IN) 30 3.78 3.47 3.70 3.06 3.81 3.82 5.06 4.81 3.90 3.15 2.85 3.23 44.64
MAXIMUM MONTHLY (IN) 53 9.93 8.21 10.36 7.25 10.12 9.72 14.37 14.32 13.80 10.12 7.01 6.10 14.37
YEAR OF OCCURRENCE 1987 1998 1994 1984 1979 1963 1994 1992 1979 1971 1951 1983 JUL 1994
MINIMUM MONTHLY (IN) 53 1.05 0.84 0.75 0.43 0.64 0.37 0.36 0.74 0.26 0.01 0.08 0.67 0.01
YEAR OF OCCURRENCE 1981 1991 1986 1985 1991 1954 1993 1975 1986 2000 2001 1988 OCT 2000
MAXIMUM IN 24 HOURS (IN) 53 3.80 4.78 4.02 5.90 3.41 6.85 5.64 11.40 6.79 7.29 3.35 2.76 11.40
YEAR OF OCCURRENCE 1967 1998 1994 1991 1980 1963 1969 1964 1959 1999 1952 1983 AUG 1964
NORMAL NO. DAYS WITH:
PRECIPITATION 0.01 30 10.7 10.3 10.4 9.8 9.9 9.7 11.1 10.1 7.7 7.4 7.7 9.5 114.3
PRECIPITATION 1.00 30 0.8 0.7 0.7 0.8 0.9 1.1 1.5 1.3 1.2 0.8 0.5 0.6 10.9
SNOWFALL NORMAL (IN) 30 3.1 3.9 1.2 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.* 0.5 8.8
MAXIMUM MONTHLY (IN) 49 14.2 24.4 13.7 1.2 T T 0.0 T 0.0 0.0 0.6 14.7 24.4
YEAR OF OCCURRENCE 1966 1989 1980 1964 1994 1990 1991 1950 1958 FEB 1989
MAXIMUM IN 24 HOURS (IN) 49 9.1 14.2 9.9 1.2 T T 0.0 T 0.0 0.0 0.6 11.4 14.2
YEAR OF OCCURRENCE 1973 1989 1980 1964 1994 1990 1991 1950 1958 FEB 1989
MAXIMUM SNOW DEPTH (IN) 49 9 14 14 0 0 0 0 0 0 0 0 11 14
YEAR OF OCCURRENCE 1966 1980 1980 1958 MAR 1980
NORMAL NO. DAYS WITH:
SNOWFALL 1.0 30 0.9 0.8 0.2 0.* 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.2 2.1

2001 Norfolk, Virginia (ORF)

PRECIPITATION (inches) 2001 NORFOLK, VA (ORF)
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1972 2.94 3.50 2.55 2.15 3.35 4.93 4.65 1.60 6.91 4.09 5.44 4.12 46.23
1973 2.54 3.21 4.69 3.44 3.62 5.93 4.19 7.92 0.86 1.37 1.90 5.83 45.50
1974 3.52 2.98 5.16 3.34 3.74 4.76 5.47 8.33 4.40 1.23 1.22 3.81 47.96
1975 4.18 4.18 5.72 4.19 3.37 1.16 13.73 0.74 4.82 3.19 1.63 3.62 50.53
1976 2.51 1.50 2.21 0.99 3.74 1.59 5.19 2.62 3.51 2.90 2.38 3.22 32.36
1977 3.33 2.23 4.05 2.20 3.86 2.41 2.70 4.57 3.00 6.09 5.41 3.92 43.77
1978 6.32 1.91 7.80 2.90 5.64 7.84 4.19 1.66 1.17 1.50 4.40 2.31 47.64
1979 6.47 5.01 5.13 7.00 10.12 2.97 4.69 1.79 13.80 1.74 5.26 0.98 64.96
1980 4.54 2.91 4.40 3.25 5.17 1.39 1.85 4.54 1.47 4.21 2.01 2.64 38.38
1981 1.05 2.26 1.88 2.26 2.75 5.00 5.10 6.87 3.18 3.28 1.78 5.77 41.18
1982 3.35 5.81 3.04 1.71 3.07 4.22 5.83 6.51 3.63 4.25 3.43 4.30 49.15
1983 2.21 6.23 4.55 6.13 3.52 3.84 0.77 3.07 4.52 5.29 3.24 6.10 49.47
1984 2.77 4.66 5.09 7.25 6.23 1.50 7.66 2.25 1.94 0.57 2.68 2.22 44.82
1985 3.98 3.53 2.02 0.43 3.23 6.81 6.14 1.89 6.36 3.92 5.71 0.79 44.81
1986 2.52 2.71 0.75 3.31 1.41 1.51 2.59 4.80 0.26 1.67 1.21 3.74 26.48
1987 9.93 3.11 2.30 3.83 2.65 2.98 3.20 2.04 7.00 1.81 3.51 2.33 44.69
1988 3.12 2.70 2.11 3.53 5.49 3.83 2.93 5.69 1.74 2.85 4.02 0.67 38.68
1989 2.70 5.80 8.50 3.62 2.97 5.10 4.86 7.49 5.10 2.94 3.69 3.86 56.63
1990 3.26 2.93 3.49 3.55 3.79 3.51 4.06 11.85 1.00 3.73 1.68 2.67 45.52
1991 4.74 0.84 4.70 6.39 0.64 4.54 6.46 3.77 2.04 4.65 1.72 2.43 42.92
1992 4.48 2.07 2.63 1.26 3.46 2.22 4.52 14.32 2.06 2.85 4.26 3.15 47.28
1993 4.89 2.36 5.91 3.59 2.88 2.79 0.36 1.45 4.14 3.40 0.97 3.29 36.03
1994 4.06 3.64 10.36 0.56 3.52 1.27 14.37 3.65 2.02 2.50 5.25 1.20 52.40
1995 2.40 2.80 2.95 2.76 2.42 4.54 1.78 1.50 5.05 4.82 2.94 1.86 35.82
1996 5.49 3.04 3.46 4.94 3.59 6.60 7.46 5.19 2.72 4.71 2.87 3.86 53.93
1997 2.09 2.94 3.21 3.01 1.66 1.10 7.85 1.76 1.97 4.31 4.94 2.64 37.48
1998 6.02 8.21 4.15 4.31 3.99 4.56 3.91 8.47 2.25 1.73 1.83 5.33 54.76
1999 3.51 2.33 3.29 3.66 3.85 3.60 6.17 4.47 13.16 8.24 1.40 1.71 55.39
2000 5.07 1.13 2.40 3.70 4.05 8.31 7.52 8.35 6.25 0.01 1.67 0.97 49.43
2001 1.46 2.16 4.73 1.48 2.89 6.91 4.40 4.21 2.46 0.75 0.08 1.83 33.36
POR=131 YRS 3.40 3.36 3.80 3.24 3.66 4.03 5.55 5.31 3.85 3.12 2.59 3.11 45.02

2001 Norfolk, Virginia (ORF)

AVERAGE TEMPERATURE (F) 2001 NORFOLK, VA (ORF)
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1972 46.4 43.2 49.0 56.4 63.5 70.5 77.6 75.8 71.9 59.2 51.6 49.2 59.5
1973 40.5 39.7 52.3 58.5 66.9 76.9 78.3 78.5 75.0 64.2 53.5 46.2 60.9
1974 48.6 43.4 53.1 60.8 66.8 72.8 78.3 77.4 71.4 58.7 53.5 46.0 60.9
1975 46.0 45.4 47.4 52.7 68.3 77.0 78.6 79.6 72.3 63.4 55.7 43.2 60.8
1976 38.9 49.9 53.4 61.9 66.3 75.9 78.2 75.9 71.1 57.7 45.9 41.4 59.7
1977 29.2 41.5 54.7 61.9 68.2 74.3 81.4 81.0 76.3 60.5 54.8 43.5 60.6
1978 37.0 32.6 46.1 57.2 65.6 74.1 76.1 80.5 73.2 60.8 56.0 45.3 58.7
1979 39.4 33.3 49.1 58.1 66.7 70.4 77.1 78.5 72.8 60.4 56.4 44.9 58.9
1980 40.3 34.7 46.5 58.6 67.8 73.9 80.9 80.9 76.1 60.4 49.9 42.3 59.4
1981 32.7 43.1 45.4 61.2 65.1 78.3 79.8 75.1 70.7 59.6 50.7 41.0 58.6
1982 35.4 42.0 48.8 55.0 69.4 73.4 78.6 75.3 70.0 60.2 54.4 48.8 59.3
1983 40.2 40.8 51.0 55.7 65.8 73.0 80.3 79.0 72.8 62.7 52.6 41.6 59.6
1984 35.5 46.7 45.4 55.6 67.8 76.2 76.7 78.4 70.5 66.9 49.9 50.9 60.0
1985 34.9 40.4 51.8 62.0 68.8 74.2 78.2 77.2 73.4 65.9 60.3 41.2 60.7
1986 39.3 42.1 49.9 57.3 67.6 76.1 82.1 76.6 72.4 65.4 54.9 44.8 60.7
1987 39.6 38.7 47.5 54.6 68.3 77.0 82.4 79.6 74.3 56.6 54.3 46.0 59.9
1988 37.3 42.5 49.5 56.5 65.8 73.6 80.1 80.8 70.5 56.9 54.2 42.4 59.2
1989 45.3 43.6 50.1 56.5 65.6 78.5 79.2 77.7 73.9 62.7 53.3 34.8 60.1
1990 47.3 50.2 53.2 58.7 66.6 75.5 80.6 78.0 71.6 65.9 55.0 50.5 62.8
1991 43.5 46.0 52.7 61.6 72.8 76.2 82.0 79.5 72.3 61.9 52.7 47.6 62.4
1992 42.7 45.0 48.8 58.2 62.4 72.0 81.8 75.6 73.5 59.7 53.8 44.6 59.8
1993 44.2 39.1 46.8 57.3 68.5 76.1 83.4 78.9 74.6 61.3 53.5 41.5 60.4
1994 36.5 43.4 51.7 64.7 64.9 79.6 83.0 77.6 72.4 62.0 57.5 50.1 62.0
1995 45.1 41.5 51.7 60.4 67.9 75.8 83.3 80.1 72.2 65.5 48.4 40.0 61.0
1996 38.7 41.3 45.0 58.8 65.2 75.2 77.7 74.9 72.4 61.8 46.5 46.7 58.7
1997 41.3 46.0 51.5 54.6 64.0 72.0 79.1 76.4 72.0 62.1 50.3 43.5 59.4
1998 46.5 47.2 50.8 58.9 67.5 75.9 79.0 78.9 75.3 61.9 52.6 48.7 61.9
1999 46.1 44.5 47.6 58.0 66.5 73.9 81.1 79.5 72.1 61.5 55.5 45.8 61.0
2000 40.2 45.1 53.0 57.5 70.3 76.1 76.3 76.6 71.5 62.1 49.3 38.2 59.7
2001 39.3 44.0 46.5 58.2 66.5 75.8 76.3 78.8 70.4 61.3 56.0 49.7 60.2
POR=127 YRS 41.1 42.2 48.9 57.5 66.7 74.7 78.8 77.6 72.4 62.1 52.3 43.8 59.8

REFERENCE NOTES:

PAGE 1:

THE TEMPERATURE GRAPH SHOWS NORMAL MAXIMUM AND NORMAL MINIMUM DAILY TEMPERATURES (SOLID CURVES) AND THE ACTUAL DAILY HIGH AND LOW TEMPERATURES (VERTICAL BARS).

PAGE 2 AND 3:

H/C INDICATES HEATING AND COOLING DEGREE DAYS.

RH INDICATES RELATIVE HUMIDITY

W/O INDICATES WEATHER AND OBSTRUCTIONS

S INDICATES SUNSHINE.

PR INDICATES PRESSURE.

CLOUDINESS ON PAGE 3 IS THE SUM OF THE CEILOMETER AND SATELLITE DATA NOT TO EXCEED EIGHT EIGHTHS (OKTAS).

GENERAL:

T INDICATES TRACE PRECIPITATION, AN AMOUNT GREATER THAN ZERO BUT LESS THAN THE LOWEST REPORTABLE VALUE.

+ INDICATES THE VALUE ALSO OCCURS ON EARLIER DATES.

BLANK ENTRIES DENOTE MISSING OR UNREPORTED DATA.

NORMALS ARE 30–YEAR AVERAGES (1961–1990).

ASOS INDICATES AUTOMATED SURFACE OBSERVING SYSTEM.

PM INDICATES THE LAST DAY OF THE PREVIOUS MONTH.

POR (PERIOD OF RECORD) BEGINS WITH THE JANUARY DATA MONTH AND IS THE NUMBER OF YEARS USED TO COMPUTE THE MEAN. INDIVIDUAL MONTHS WITHIN THE POR MAY BE MISSING.

WHEN THE POR FOR A NORMAL IS LESS THAN 30 YEARS, THE NORMAL IS PROVISIONAL AND IS BASED ON THE NUMBER OF YEARS INDICATED.

0.* OR * INDICATES THE VALUE OR MEAN–DAYS–WITH IS BETWEEN 0.00 AND 0.05.

CLOUDINESS FOR ASOS STATIONS DIFFERS FROM THE NON–ASOS OBSERVATION TAKEN BY A HUMAN OBSERVER. ASOS STATION CLOUDINESS IS BASED ON TIME–AVERAGED CEILOMETER DATA FOR CLOUDS AT OR BELOW 12,000 FEET AND ON SATELLITE DATA FOR CLOUDS ABOVE 12,000 FEET.

THE NUMBER OF DAYS WITH CLEAR, PARTLY CLOUDY, AND CLOUDY CONDITIONS FOR ASOS STATIONS IS THE SUM OF THE CEILOMETER AND SATELLITE DATA FOR THE SUNRISE TO SUNSET PERIOD.

GENERAL CONTINUED:

CLEAR INDICATES 0–2 OKTAS, PARTLY CLOUDY INDICATES 3–6 OKTAS, AND CLOUDY INDICATES 7 OR 8 OKTAS. WHEN AT LEAST ONE OF THE ELEMENTS (CEILOMETER OR SATELLITE) IS MISSING, THE DAILY CLOUDINESS IS NOT COMPUTED.

WIND DIRECTION IS RECORDED IN TENS OF DEGREES (2 DIGITS) CLOCKWISE FROM TRUE NORTH. "00" INDICATES CALM. "36" INDICATES TRUE NORTH.

RESULTANT WIND IS THE VECTOR AVERAGE OF THE SPEED AND DIRECTION.

AVERAGE TEMPERATURE IS THE SUM OF THE MEAN DAILY MAXIMUM AND MINIMUM TEMPERATURE DIVIDED BY 2.

SNOWFALL DATA COMPRISE ALL FORMS OF FROZEN PRECIPITATION, INCLUDING HAIL.

A HEATING (COOLING) DEGREE DAY IS THE DIFFERENCE BETWEEN THE AVERAGE DAILY TEMPERATURE AND 65 F.

DRY BULB IS THE TEMPERATURE OF THE AMBIENT AIR.

DEW POINT IS THE TEMPERATURE TO WHICH THE AIR MUST BE COOLED TO ACHIEVE 100 PERCENT RELATIVE HUMIDITY.

WET BULB IS THE TEMPERATURE THE AIR WOULD HAVE IF THE MOISTURE CONTENT WAS INCREASED TO 100 PERCENT RELATIVE HUMIDITY.

ON JULY 1, 1996, THE NATIONAL WEATHER SERVICE BEGAN USING THE "METAR" OBSERVATION CODE THAT WAS ALREADY EMPLOYED BY MOST OTHER NATIONS OF THE WORLD. THE MOST NOTICEABLE DIFFERENCE IN THIS ANNUAL PUBLICATION WILL BE THE CHANGE IN UNITS FROM TENTHS TO EIGHTS (OKTAS) FOR REPORTING THE AMOUNT OF SKY COVER.

2001 Norfolk, Virginia (ORF)

HEATING DEGREE DAYS (base 65 F) 2001 NORFOLK, VA (ORF)
YEAR JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN TOTAL
1972-73 0 0 4 197 406 486 752 703 403 217 47 0 3215
1973-74 0 0 0 83 353 575 504 599 377 183 63 0 2737
1974-75 0 0 16 213 371 584 584 547 541 382 47 0 3285
1975-76 0 0 6 98 290 671 804 443 362 186 62 6 2928
1976-77 0 0 0 245 566 726 1104 657 330 150 40 1 3819
1977-78 0 0 0 158 321 661 860 902 580 235 72 3 3792
1978-79 0 0 3 162 268 614 787 879 499 213 52 5 3482
1979-80 0 0 0 190 272 616 759 872 564 196 58 2 3529
1980-81 0 0 11 181 449 699 994 610 605 159 96 0 3804
1981-82 0 0 12 189 423 739 907 636 495 303 21 0 3725
1982-83 0 4 6 177 334 498 762 674 426 295 85 3 3264
1983-84 0 0 27 126 370 718 908 522 601 281 54 3 3610
1984-85 0 0 16 37 450 432 928 686 421 172 21 0 3163
1985-86 0 0 6 61 162 731 790 637 465 228 69 1 3150
1986-87 0 1 8 88 311 620 779 730 538 306 58 0 3439
1987-88 0 0 0 252 320 582 851 646 474 266 86 15 3492
1988-89 0 0 2 265 324 692 602 601 486 282 80 0 3334
1989-90 0 0 12 134 356 928 541 417 410 234 39 3 3074
1990-91 0 0 13 102 301 444 657 527 386 166 19 2 2617
1991-92 0 0 22 132 377 542 686 575 496 262 125 1 3218
1992-93 0 0 9 179 337 623 638 722 555 246 22 5 3336
1993-94 0 0 10 140 353 726 877 599 414 111 89 0 3319
1994-95 0 0 0 113 239 463 614 651 411 190 45 0 2726
1995-96 0 0 4 80 497 769 810 681 614 237 99 7 3798
1996-97 0 0 1 123 559 561 728 532 418 314 82 44 3362
1997-98 0 0 1 148 434 663 573 492 466 211 60 0 3048
1998-99 0 0 2 127 367 513 583 567 531 226 60 0 2976
1999-00 0 0 4 146 282 588 762 570 374 227 28 1 2982
2000-01 0 0 13 133 466 825 793 583 571 239 52 0 3675
2001- 0 0 19 163 275 468

2001 Norfolk, Virginia (ORF)

COOLING DEGREE DAYS (base 65 F) 2001 NORFOLK, VA (ORF)
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1972 0 0 8 20 40 183 398 343 217 22 10 2 1243
1973 0 0 16 27 112 363 420 424 307 64 17 1 1751
1974 3 0 16 64 124 244 419 390 213 26 32 0 1531
1975 2 3 0 22 157 366 429 460 233 55 17 0 1744
1976 1 13 11 102 110 337 417 347 193 27 0 0 1558
1977 0 4 16 66 145 289 515 502 347 24 22 0 1930
1978 0 0 0 9 96 286 352 487 257 36 3 9 1535
1979 0 0 11 13 112 171 385 426 239 54 22 0 1433
1980 0 0 0 11 153 274 499 497 351 45 1 1 1832
1981 0 0 0 51 103 407 468 320 189 29 0 0 1567
1982 0 0 1 8 166 257 428 331 164 39 21 4 1419
1983 0 0 0 21 115 250 481 440 265 62 4 0 1638
1984 0 0 0 5 146 345 368 426 188 102 5 2 1587
1985 0 5 20 91 146 284 419 382 267 97 28 0 1739
1986 0 0 2 2 153 343 537 367 237 109 15 0 1765
1987 0 0 0 2 168 364 544 461 285 0 7 0 1831
1988 0 0 1 18 118 280 477 498 173 17 10 0 1592
1989 0 9 30 31 106 412 447 399 286 69 10 0 1799
1990 0 8 52 51 98 324 489 407 218 137 8 5 1797
1991 0 0 13 71 269 347 534 456 248 43 18 11 2010
1992 0 0 0 63 51 220 527 336 270 23 9 0 1499
1993 0 0 0 23 136 345 579 438 305 31 18 0 1875
1994 0 0 11 111 94 447 562 400 229 30 20 8 1912
1995 2 0 4 59 143 330 574 475 226 102 6 0 1921
1996 0 0 1 55 116 320 401 312 227 31 10 0 1473
1997 0 7 7 7 59 262 443 360 218 63 0 0 1426
1998 7 0 33 37 143 338 440 440 317 39 0 12 1806
1999 4 0 0 25 112 275 509 458 222 42 4 0 1651
2000 0 0 7 10 196 342 358 368 216 51 0 0 1548
2001 0 0 3 40 108 331 357 435 187 57 15 3 1536

2001 Norfolk, Virginia (ORF)

SNOWFALL (inches) 2001 NORFOLK, VA (ORF)
YEAR JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN TOTAL
1972-73 0.0 0.0 0.0 0.0 T 0.0 9.1 4.7 T 0.0 0.0 0.0 13.8
1973-74 0.0 0.0 0.0 0.0 0.0 1.4 T 0.9 7.5 0.0 0.0 0.0 9.8
1974-75 0.0 0.0 0.0 0.0 0.0 T 0.3 T 0.8 T 0.0 0.0 1.1
1975-76 0.0 0.0 0.0 0.0 0.0 T T T 0.0 0.0 0.0 0.0 T
1976-77 0.0 0.0 0.0 0.0 T 1.0 4.7 1.4 0.0 0.0 0.0 0.0 7.1
1977-78 0.0 0.0 0.0 0.0 0.0 T 1.3 9.2 2.3 0.0 0.0 0.0 12.8
1978-79 0.0 0.0 0.0 0.0 0.0 0.0 1.0 12.7 T 0.0 0.0 0.0 13.7
1979-80 0.0 0.0 0.0 0.0 0.0 0.0 9.3 18.9 13.7 0.0 0.0 0.0 41.9
1980-81 0.0 0.0 0.0 0.0 0.0 T T 0.0 0.3 0.0 0.0 0.0 0.3
1981-82 0.0 0.0 0.0 0.0 0.0 1.8 4.2 0.1 T T 0.0 0.0 6.1
1982-83 0.0 0.0 0.0 0.0 0.0 0.4 T 3.0 T T 0.0 0.0 3.4
1983-84 0.0 0.0 0.0 0.0 0.0 T T 5.2 T 0.0 0.0 0.0 5.2
1984-85 0.0 0.0 0.0 0.0 0.0 T 4.3 0.0 T 0.0 0.0 0.0 4.3
1985-86 0.0 0.0 0.0 0.0 0.0 T 3.6 1.1 T T 0.0 0.0 4.7
1986-87 0.0 0.0 0.0 0.0 0.0 T 1.6 1.0 1.2 T 0.0 0.0 3.8
1987-88 0.0 0.0 0.0 0.0 0.3 T 4.4 T T 0.0 0.0 0.0 4.7
1988-89 0.0 0.0 0.0 0.0 0.0 T T 24.4 T 0.5 0.0 0.0 24.9
1989-90 0.0 0.0 0.0 0.0 0.0 0.5 0.0 0.0 T 0.0 0.0 T 0.5
1990-91 0.0 0.0 0.0 0.0 0.0 T 0.0 T T 0.0 0.0 0.0 T
1991-92 0.0 T 0.0 0.0 0.0 T T 0.0 T T 0.0 0.0 T
1992-93 0.0 0.0 0.0 0.0 0.0 0.0 0.3 1.9 1.7 0.0 0.0 0.0 3.9
1993-94 0.0 0.0 0.0 0.0 0.0 3.9 7.4 1.2 0.3 0.0 T 0.0 12.8
1994-95 0.0 0.0 0.0 0.0 0.0 0.0 T 0.3 T 0.0 0.0 0.0 0.3
1995-96 0.0 0.0 0.0 0.0 0.0 T 6.2 11.0
1996-97
1997-98
1998-99 T
1999-00 9.0
2000-01 0.3 0.0 0.0 0.0
2001- 0.0 0.0 0.0 0.0 0.0 0.0
POR=47 YRS 0.0 T 0.0 0.0 0.0 0.9 2.7 2.8 1.0 0.0 T T 7.4



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2001 Norfolk, Virginia (ORF) forum