2001 SHREVEPORT, LOUISIANA (SHV)



Shreveport is located on the west side of the Red River, opposite Bossier City, in the northwestern section of Louisiana, some 30 miles south of Arkansas and 15 miles east of Texas. A portion of the city is situated in the Red River bottom lands and the remainder in gently rolling hills that begin about 1 mile west of the river. The NOAA National Weather Service Office is at the Shreveport Regional Airport, about 8 miles southwest of the downtown area. Elevations in the Shreveport area range from about 170 to 280 feet above sea level.

The climate of Shreveport is transitional between the subtropical humid type prevalent to the south and the continental climates of the Great Plains and Middle West to the north. During winter, masses of moderate to severely cold air move periodically through the area. The spring and fall seasons are usually mild, while the summer months are consistently quite warm and humid with high pressure and a moist southerly flow being the dominant feature. Rainfall is abundant with the normal annual just over 46 inches, with monthly averages ranging less than 3 inches in August to more than 5 inches in May. The average growing season for northwest Louisiana ranges between 230 and 240 days in length.

The majority of rainfall is of convective and air mass types–showery and brief–except during winter when nearly continuous frontal rains may persist for a few days. Extremes of precipitation occur in all seasons. While torrential rainfall is the exception in the Shreveport area, some heavy rainfall events of notes are 12.44 inches in a 24–hour peroid on July 24–25, 1933, and 19.08 inches over a three–day peroid on July 23–25, 1933. The July 1933 total of 25.44 inches was the greatest monthly total. The greatest annual rainfall of record was in 1991 with 81.99 inches, and the driest year of record was 1899 with 23.10 inches. The months with the fewest days of rain are August and October, with August having the least average precipitation.

The winter months are normally mild with cold spells generally of short duration. The typical pattern is turning cold one day, reaching the lowest temperature on the second day, and a warming trend on the third day. The coldest reading on record is −5 degrees F on February 12, 1899. Temperatures of freezing or below occur each winter with an average of 39 days during the year. Temperatures drop below 15 degrees F only about one out of every two winters. The average date of the first 32 degrees F in the fall is November 15 and the average date of the last freeze in the spring is March 10. Freezing temperatures have been recorded as early as October 19 and as late as April 11. Temperatures recorded at the NWS Office on clear, calm nights are normally 2 to 5 degrees warmer than those in the low–lying river bottom lands of the area.

Measurable snowfall amounts occur on an average of only once every other year; many consecuitive years may pass with no measurable snowfall. The heaviest snowstorm of record in the Shreveport area is 11.0 inches in december of 1929. This fell on the 21st and 22nd, and one–half inch remained on the ground December 25th, making this the only Christmas Day of record with snow on the ground. In 1948, 12.4 inches of snow was measured for the month of January for the greatest monthly amount on record. Occasional ice and sleet storms do considerable damage to trees, power and telephone lines, as well as make travel very difficult.

The summer months are consistently quite warm, with maximum temperatures exceeding 100 degrees about 6 days per year, exceeding 95 degrees about 32 days per year, and exceeding 90 degrees about 87 days per year. The highest temperature on record is 110 degrees F on August 18, 1909. Showers and thunderstorms at any one location in the area give about eight days in a month of measurable rainfall. The resulting point rainfall totals are usually less than one–half inch except on two or three days per month when heavier amounts are recorded.

Thunderstorms occur each month, but are most frequent in spring and summer months. The showers and thunderstorms during the spring and autumn months are most often produced by squall lines and fronts, and are generally heavier than the air mass showers which occur in the summer months. Severe local storms, including hailstorms, tornadoes, and local windstorms have occurred over small areas in all seasons, but are most frequent during the spring months, with a secondary peak from November to early January. large hail of a damaging nature is infrequent, although hail as large as grapefruit fell in March 1961, and baseball size hail fell in May 1974 and April 1995.

The average relative humidity is rather high in all seasons. These high humidity values may be experienced at any hour but occur mainly during the early morning hours, with two–thirds of the hours shortly before sunrise having relative humidity of 90 percent or higher. In contrast, more than half of the mid–afternoon hours have had relative humidity values of less than 50 percent.

Tropical cyclones are in the dissipating stages by the time they reach this portion of the state and winds from them are usually not a destructive factor. rainfall accompanying these systems can be heavy and can contribute to local flooding.

NORMALS, MEANS, AND EXTREMES

SHREVEPORT, LA (SHV)

LATITUDE:    LONGITUDE: ELEVATION (FT): TIME ZONE: WBAN: 13957

32 26′ 49″ N  93 49′ 27″ W  GRND: 271  BARO: 274  CENTRAL (UTC + 6)

2001 Shreveport, Louisiana (SHV)

ELEMENT POR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC YEAR
TEMPERATURE F NORMAL DAILY MAXIMUM 30 55.4 60.6 69.2 77.1 83.2 89.7 93.0 93.1 87.3 78.7 68.0 58.5 76.2
MEAN DAILY MAXIMUM 54 56.2 61.4 68.6 76.9 83.5 90.1 93.3 93.4 87.6 78.5 67.1 58.8 76.3
HIGHEST DAILY MAXIMUM 49 84 89 92 94 102 102 107 109 109 97 88 84 109
YEAR OF OCCURRENCE 1972 1986 1974 1987 1998 1998 1998 2000 2000 1954 1984 1955 SEP 2000
MEAN OF EXTREME MAXS. 54 76.5 79.6 84.1 87.2 91.8 95.7 98.9 100.1 96.5 90.7 82.8 76.9 88.4
NORMAL DAILY MINIMUM 30 34.8 38.0 45.8 54.1 62.0 69.0 72.3 71.3 66.0 54.3 45.3 37.3 54.2
MEAN DAILY MINIMUM 54 36.4 39.8 46.0 54.2 62.8 69.6 72.7 71.6 66.0 54.6 44.8 38.3 54.7
LOWEST DAILY MINIMUM 49 3 12 20 31 42 52 58 53 42 28 16 5 3
YEAR OF OCCURRENCE 1962 1978 1980 1989 1960 1977 1972 1992 1984 1993 1976 1989 JAN 1962
MEAN OF EXTREME MINS. 54 18.9 23.3 28.8 38.2 49.5 59.7 66.6 64.2 51.9 38.4 28.2 21.4 40.8
NORMAL DRY BULB 30 45.1 49.3 57.5 65.6 72.6 79.4 82.7 82.2 76.7 66.5 56.7 48.0 65.2
MEAN DRY BULB 54 46.3 50.5 57.3 65.6 73.2 79.9 83.0 82.6 76.8 66.5 55.9 48.5 65.5
MEAN WET BULB 17 42.0 46.8 51.6 58.7 67.1 72.6 75.0 74.1 68.9 60.1 51.6 44.5 59.4
MEAN DEW POINT 17 36.4 40.8 45.6 53.5 63.5 69.4 71.8 70.3 65.0 55.9 47.0 39.5 54.9
NORMAL NO. DAYS WITH:
MAXIMUM 90 30 0.0 0.0 * 0.3 3.7 17.2 25.0 25.0 13.3 2.5 0.0 0.0 87.0
MAXIMUM 32 30 1.3 0.4 * 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.6 2.3
MINIMUM 32 30 14.1 8.3 2.5 0.2 0.0 0.0 0.0 0.0 0.0 0.2 2.7 10.8 38.8
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 0.0
H/C NORMAL HEATING DEG. DAYS 30 623 448 262 69 0 0 0 0 0 63 264 535 2264
NORMAL COOLING DEG. DAYS 30 6 8 30 87 239 432 549 533 351 110 15 8 2368
RH NORMAL (PERCENT) 30 73 70 68 70 73 73 72 72 74 72 74 74 72
HOUR 00 LST 30 78 76 76 79 84 84 83 83 84 82 82 81 81
HOUR 06 LST 30 84 84 84 87 90 91 90 91 91 89 87 86 88
HOUR 12 LST 30 63 60 56 56 59 59 58 56 58 54 59 63 58
HOUR 18 LST 30 65 58 54 56 60 60 58 58 62 62 68 68 61
S PERCENT POSSIBLE SUNSHINE 48 52 57 58 60 64 72 75 75 70 70 60 54 64
W/O MEAN NO. DAYS WITH:
HEAVY FOG (VISBY 1/4 MI) 49 3.3 2.2 1.4 1.3 1.0 0.5 0.3 0.4 0.9 2.2 2.8 3.1 19.4
THUNDERSTORMS 49 2.2 2.9 5.2 5.5 7.2 7.5 8.1 6.5 4.3 3.0 3.1 2.2 57.7
CLOUDINESS MEAN:
SUNRISE-SUNSET (OKTAS) 1 2.4 1.6
MIDNIGHT-MIDNIGHT (OKTAS) 1 2.4
MEAN NO. DAYS WITH:
CLEAR 1 6.0 5.0 10.0 6.0 7.0
PARTLY CLOUDY 1 2.0 3.0 7.0 8.0
CLOUDY 1 3.0 2.0 7.0 3.0 4.0
PR MEAN STATION PRESSURE(IN) 28 29.86 29.82 29.73 29.70 29.67 29.69 29.73 29.73 29.74 29.79 29.82 29.86 29.76
MEAN SEA-LEVEL PRES. (IN) 17 30.15 30.09 30.03 29.97 29.94 29.95 30.01 29.99 30.01 30.07 30.11 30.15 30.04
WINDS MEAN SPEED (MPH) 42 9.3 9.6 9.9 9.8 8.6 7.7 7.0 6.7 7.2 7.3 8.5 9.0 8.4
PREVAIL. DIR (TENS OF DEGS) 27 18 18 18 18 18 18 18 18 12 14 16 13 18
MAXIMUM 2-MINUTE:
SPEED (MPH) 6 38 43 54 45 63 41 41 40 32 37 40 36 63
DIR. (TENS OF DEGS) 28 34 29 26 32 29 15 11 32 25 29 30 32
YEAR OF OCCURRENCE 1999 2001 1999 1999 2000 1998 1998 1998 1996 2001 1998 2000 MAY 2000
MAXIMUM 5-SECOND:
SPEED (MPH) 6 46 52 68 55 81 55 67 59 41 46 51 45 81
DIR. (TENS OF DEGS) 26 28 31 26 32 31 18 34 33 25 29 30 32
YEAR OF OCCURRENCE 2000 1999 1999 1999 2000 1998 1998 1997 1996 2001 1996 2000 MAY 2000
PRECIPITATION NORMAL (IN) 30 3.88 3.92 3.59 3.75 5.18 4.29 3.67 2.43 3.12 3.73 4.45 4.10 46.11
MAXIMUM MONTHLY (IN) 49 12.96 8.57 8.72 21.84 11.78 17.11 9.46 9.23 9.59 12.05 10.81 10.00 21.84
YEAR OF OCCURRENCE 1999 1983 1997 1991 1967 1989 1972 1991 1968 1984 1987 1982 APR 1991
MINIMUM MONTHLY (IN) 49 0.27 0.42 0.56 0.43 0.15 0.13 0.15 0.35 0.08 0.00 0.52 0.59 0.00
YEAR OF OCCURRENCE 1971 1999 1966 1987 1998 1988 1964 2000 1994 1963 1999 1981 OCT 1963
MAXIMUM IN 24 HOURS (IN) 49 7.00 3.53 3.63 10.44 5.27 7.28 4.40 4.64 5.39 3.88 6.51 3.94 10.44
YEAR OF OCCURRENCE 1999 1965 1979 1991 1978 1993 1995 1955 1961 1957 1987 2001 APR 1991
NORMAL NO. DAYS WITH:
PRECIPITATION 0.01 30 9.4 8.1 9.3 8.2 9.0 7.9 7.9 6.6 7.0 6.6 8.1 9.5 97.6
PRECIPITATION 1.00 30 1.2 1.2 1.1 1.2 1.8 1.3 1.2 1.0 1.0 1.2 1.4 1.1 14.7
SNOWFALL NORMAL (IN) 30 1.0 0.6 0.2 0.* 0.0 0.0 0.0 0.0 0.0 0.0 0.* 0.3 2.1
MAXIMUM MONTHLY (IN) 49 5.9 4.4 4.0 0.3 T 0.0 0.0 T 0.0 T 1.3 5.4 5.9
YEAR OF OCCURRENCE 1978 1985 1965 1987 1994 1997 1992 1980 1983 JAN 1978
MAXIMUM IN 24 HOURS (IN) 49 5.6 4.4 4.0 0.3 T 0.0 0.0 T 0.0 T 1.3 5.4 5.6
YEAR OF OCCURRENCE 1982 1985 1965 1987 1994 1997 1992 1980 1983 JAN 1982
MAXIMUM SNOW DEPTH (IN) 53 9 4 2 0 0 0 0 0 0 0 1 3 9
YEAR OF OCCURRENCE 1948 1951 1965 1980 1963 JAN 1948
NORMAL NO. DAYS WITH:
SNOWFALL 1.0 30 0.3 0.2 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.* 0.1 0.7

2001 Shreveport, Louisiana (SHV)

PRECIPITATION (inches) 2001 SHREVEPORT, LA (SHV)
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1972 5.97 0.94 2.45 2.06 4.13 2.76 9.46 1.27 2.10 6.32 5.32 4.18 46.96
1973 5.65 1.52 5.01 6.44 2.00 5.84 7.63 0.77 6.39 5.38 5.16 6.37 58.16
1974 10.09 3.67 3.60 3.09 4.58 6.29 7.73 3.84 6.64 3.79 5.80 2.34 61.46
1975 4.55 4.51 5.84 3.91 5.31 3.48 3.45 1.65 0.98 3.87 4.44 1.88 43.87
1976 2.07 2.45 6.67 1.75 5.95 4.42 3.47 2.96 6.28 2.08 1.63 3.77 43.50
1977 3.00 3.68 4.94 2.05 2.40 2.41 3.89 4.28 0.53 0.31 2.11 2.58 32.18
1978 4.89 1.90 2.66 2.79 7.92 1.21 1.74 3.90 2.40 2.74 4.18 5.13 41.46
1979 9.22 4.98 5.74 7.42 7.99 3.04 7.50 1.86 4.33 3.96 4.76 3.12 63.92
1980 4.67 3.10 3.75 5.34 4.42 2.60 1.83 0.42 1.63 2.48 3.59 0.74 34.57
1981 1.43 3.83 3.33 1.97 9.96 6.45 2.36 0.94 3.32 5.63 1.49 0.59 41.30
1982 3.59 3.19 2.59 2.72 2.32 1.84 4.25 2.20 1.11 5.19 5.72 10.00 44.72
1983 2.45 8.57 3.68 1.47 8.22 6.60 1.18 1.67 3.12 0.79 4.90 7.18 49.83
1984 2.10 5.66 3.58 2.52 5.86 3.56 2.20 0.87 2.61 12.05 4.46 2.88 48.35
1985 2.38 4.42 4.28 3.05 1.96 4.57 8.40 0.35 4.40 9.87 4.25 3.37 51.30
1986 0.49 3.48 0.75 3.50 6.60 14.67 2.92 1.68 3.51 6.63 9.19 4.69 58.11
1987 2.26 7.80 1.48 0.43 6.67 5.43 1.21 3.50 0.94 5.49 10.81 8.12 54.14
1988 2.06 3.59 3.89 3.45 0.42 0.13 3.12 3.52 1.61 4.44 5.44 4.71 36.38
1989 7.20 4.06 3.41 2.41 10.07 17.11 4.46 3.94 1.08 1.50 2.32 3.34 60.90
1990 10.02 6.92 4.90 4.29 10.48 2.56 3.53 2.88 2.93 4.33 8.81 3.99 65.64
1991 7.70 5.13 2.89 21.84 10.71 2.53 3.47 9.23 3.45 3.59 3.94 7.51 81.99
1992 4.63 6.41 5.94 3.26 2.81 3.95 3.36 1.24 5.15 4.13 4.69 5.84 51.41
1993 4.63 4.80 5.94 4.19 3.30 15.73 0.27 4.09 3.51 4.43 4.85 1.44 57.18
1994 3.63 5.02 3.67 3.67 5.85 2.81 6.43 3.80 0.08 9.14 2.50 8.00 54.60
1995 5.44 3.75 4.05 7.80 3.26 1.09 5.68 0.83 3.36 1.65 1.94 5.11 43.96
1996 2.12 0.64 2.33 3.86 0.93 6.50 5.70 5.78 7.17 1.66 5.87 2.24 44.80
1997 4.47 8.09 8.72 11.93 3.19 6.14 1.73 5.48 2.41 7.50 3.44 6.10 69.20
1998 5.84 7.19 4.28 0.79 0.15 1.35 2.84 3.83 7.79 5.72 4.58 6.24 50.60
1999 12.96 0.42 5.10 7.88 3.96 7.98 2.80 1.47 4.90 3.21 0.52 3.82 55.02
2000 2.60 2.31 7.90 5.67 10.76 7.32 1.05 T 1.13 1.65 9.93 7.56 57.88
2001 5.76 6.52 6.47 0.86 4.31 7.33 1.75 4.10 6.84 5.17 4.16 6.10 59.37
POR=YRS 4.24 3.77 4.23 4.69 4.62 3.70 3.47 2.65 2.92 3.25 3.96 4.54 46.04

2001 Shreveport, Louisiana (SHV)

AVERAGE TEMPERATURE (F) 2001 SHREVEPORT, LA (SHV)
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1972 49.4 51.9 59.8 66.9 72.3 80.8 81.0 82.6 80.2 67.2 50.9 45.5 65.7
1973 44.7 49.5 60.9 62.0 71.7 78.5 81.1 78.2 74.9 68.2 61.5 46.8 64.8
1974 47.8 51.2 63.6 64.3 74.0 76.6 82.1 80.1 71.0 66.2 55.6 47.3 65.0
1975 50.2 48.4 55.6 63.7 72.4 78.2 80.9 80.7 73.7 68.0 56.3 49.3 64.8
1976 47.1 59.2 60.2 67.3 67.9 75.7 78.6 78.7 74.3 59.9 49.3 46.3 63.7
1977 37.3 50.8 59.6 65.5 74.1 79.5 83.5 80.3 78.7 66.3 56.5 47.3 65.0
1978 34.9 38.1 52.8 65.5 73.6 80.5 85.4 83.3 77.8 66.0 60.0 48.0 63.8
1979 37.4 46.6 59.1 66.0 70.2 78.0 81.2 80.3 74.2 67.0 52.8 48.9 63.5
1980 48.3 47.9 54.9 63.0 74.3 83.4 86.9 85.5 82.1 63.5 54.2 49.1 66.1
1981 44.7 49.8 56.0 70.0 69.2 80.2 82.8 81.3 73.9 65.0 56.8 46.9 64.7
1982 46.1 45.6 61.5 63.3 74.4 78.6 83.3 83.2 75.6 64.6 55.4 51.2 65.2
1983 44.6 48.8 55.0 59.7 70.0 77.4 82.3 84.0 75.7 66.7 55.9 37.5 63.1
1984 40.6 50.4 58.0 64.9 72.1 79.3 81.1 82.1 75.0 70.6 56.4 60.0 65.9
1985 40.0 46.2 61.4 67.0 72.8 79.3 83.1 84.8 76.3 68.5 61.5 44.2 65.4
1986 49.0 54.4 59.7 66.5 72.3 79.9 83.7 80.8 79.4 65.2 55.6 46.1 66.1
1987 44.8 51.7 55.7 64.2 75.3 79.1 82.3 85.3 76.7 64.1 56.1 50.2 65.5
1988 42.2 49.3 56.3 65.2 71.8 79.8 83.3 83.7 77.8 64.1 58.6 49.2 65.1
1989 51.5 45.8 56.7 65.6 73.8 76.7 81.2 81.0 73.7 66.5 58.6 40.8 64.3
1990 52.5 56.4 59.4 65.6 72.6 82.7 82.2 83.3 79.7 65.0 58.9 48.5 67.2
1991 44.2 52.0 60.0 68.6 75.3 80.6 82.6 81.2 75.7 68.7 52.1 51.2 66.0
1992 47.2 54.7 59.5 65.1 71.4 78.5 82.9 78.6 76.0 67.0 52.0 49.5 65.2
1993 46.4 49.3 55.2 61.3 70.7 80.2 84.6 84.8 77.3 64.4 52.0 49.1 64.6
1994 46.4 51.2 58.0 66.7 70.9 81.4 82.1 81.1 76.3 67.0 60.0 51.1 66.0
1995 48.1 53.1 59.4 64.6 73.9 79.0 84.2 86.6 77.3 66.2 55.0 49.1 66.4
1996 46.2 52.4 53.4 63.8 77.0 78.3 82.3 80.0 74.1 66.0 55.7 51.5 65.1
1997 45.6 51.2 61.4 60.3 70.3 78.1 83.6 81.0 78.2 66.8 51.9 46.0 64.5
1998 51.7 51.6 56.1 63.5 77.3 84.9 88.5 84.6 81.7 68.5 58.0 49.3 68.0
1999 51.6 57.0 56.4 69.4 72.0 79.8 82.9 85.9 75.3 65.5 58.8 49.6 67.0
2000 50.4 57.2 61.7 63.6 75.8 79.1 83.9 86.9 78.1 67.8 52.6 39.8 66.4
2001 43.4 53.2 53.4 69.2 74.6 79.0 84.5 82.3 74.6 63.3 59.6 51.1 65.7
POR=YRS 47.0 50.7 57.9 65.9 73.2 80.3 83.0 82.6 77.1 67.0 56.1 48.9 65.8

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 Shreveport, Louisiana (SHV)

HEATING DEGREE DAYS (base 65 F) 2001 SHREVEPORT, LA (SHV)
YEAR JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN TOTAL
1972–73 0 0 6 92 419 597 621 429 135 145 9 0 2453
1973–74 0 0 0 40 164 557 533 386 152 78 2 0 1912
1974–75 0 0 14 32 312 541 473 457 305 124 0 0 2258
1975–76 0 0 4 39 286 492 551 186 202 38 17 0 1815
1976–77 0 0 0 199 471 574 851 399 188 46 0 0 2728
1977–78 0 0 0 72 260 549 933 746 374 61 30 0 3025
1978–79 0 0 0 57 181 528 849 517 216 50 11 0 2409
1979–80 0 0 0 52 366 498 508 494 312 96 4 0 2330
1980–81 0 0 3 128 340 488 620 425 279 14 20 0 2317
1981–82 0 0 8 129 246 554 588 537 202 125 4 0 2393
1982–83 0 0 9 120 309 457 624 449 308 186 12 0 2474
1983–84 0 0 15 69 305 848 747 421 247 81 11 0 2744
1984–85 0 0 19 36 286 208 770 528 151 42 1 0 2041
1985–86 0 0 11 49 174 638 490 331 176 44 1 0 1914
1986–87 0 0 0 86 299 579 618 366 286 117 0 0 2351
1987–88 0 0 0 79 279 456 701 453 278 54 1 0 2301
1988–89 0 0 0 76 218 482 418 535 295 93 2 0 2119
1989–90 0 0 17 85 244 743 382 243 216 92 3 0 2025
1990–91 0 0 6 126 208 509 634 357 197 26 6 0 2069
1991–92 0 0 9 36 401 422 544 297 185 84 23 0 2001
1992–93 0 0 2 33 381 480 569 435 307 154 3 0 2364
1993–94 0 0 5 132 404 490 577 392 239 81 20 0 2340
1994–95 0 0 5 74 179 440 528 334 224 80 10 0 1874
1995–96 0 0 10 56 311 507 576 387 372 115 2 0 2336
1996–97 0 0 10 59 277 427 604 383 133 157 5 0 2055
1997–98 0 0 0 95 392 580 406 368 324 88 0 0 2253
1998–99 0 0 0 37 215 501 422 250 261 41 1 0 1728
1999–00 0 0 2 79 189 477 462 247 149 103 0 0 1708
2000–01 0 0 10 70 388 774 662 332 352 35 0 0 2623
2001– 0 0 5 118 175 441

2001 Shreveport, Louisiana (SHV)

COOLING DEGREE DAYS (base 65 F) 2001 SHREVEPORT, LA (SHV)
YEAR JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC ANNUAL
1972 22 10 31 128 235 480 501 553 467 167 1 0 2595
1973 0 2 16 64 223 412 504 417 305 145 66 0 2154
1974 7 6 115 63 288 355 541 477 200 77 35 0 2164
1975 23 0 21 91 238 403 501 493 271 141 34 12 2228
1976 2 26 58 116 112 326 428 432 288 48 7 0 1843
1977 0 7 28 69 289 443 580 479 419 119 12 9 2454
1978 5 0 3 84 303 472 637 570 391 96 39 8 2608
1979 0 8 39 86 178 395 509 483 284 124 8 2 2116
1980 1 6 6 43 298 560 686 643 522 86 22 1 2874
1981 0 5 10 171 157 463 558 511 284 135 6 0 2300
1982 14 0 99 81 300 413 573 573 333 115 24 32 2557
1983 0 0 7 34 176 381 540 595 343 126 39 0 2241
1984 0 5 38 83 235 436 511 540 329 219 35 61 2492
1985 0 8 49 109 252 436 568 620 356 163 78 0 2639
1986 2 41 17 95 236 454 586 494 438 101 24 0 2488
1987 1 0 7 99 327 431 544 634 357 57 19 5 2481
1988 3 3 14 67 220 449 575 587 390 53 37 1 2399
1989 8 7 43 121 283 358 508 503 286 140 57 0 2314
1990 2 9 50 115 244 538 536 572 453 132 30 3 2684
1991 0 1 47 141 334 475 550 509 336 158 20 5 2576
1992 0 4 21 93 227 412 561 428 339 99 1 4 2189
1993 0 0 10 50 189 461 614 620 381 121 20 4 2470
1994 3 12 29 141 209 500 538 506 355 145 36 13 2487
1995 11 6 58 72 290 427 600 676 385 100 16 19 2660
1996 3 31 23 85 384 403 543 471 291 96 6 16 2352
1997 9 4 29 25 180 398 583 504 399 157 6 0 2294
1998 1 0 56 50 392 602 737 613 508 152 15 22 3148
1999 12 29 0 180 224 451 562 655 317 101 9 6 2546
2000 15 28 55 67 341 429 593 689 409 166 22 0 2814
2001 0 12 2 166 308 426 611 542 301 69 23 16 2476

2001 Shreveport, Louisiana (SHV)

SNOWFALL (inches) 2001 SHREVEPORT, LA (SHV)
YEAR JUL AUG SEP OCT NOV DEC JAN FEB MAR APR MAY JUN TOTAL
1972-73 0.0 0.0 0.0 0.0 0.0 0.0 0.6 T 0.0 0.0 0.0 0.0 0.6
1973-74 0.0 0.0 0.0 0.0 0.0 T 0.0 0.0 0.0 0.0 0.0 0.0 T
1974-75 0.0 0.0 0.0 0.0 0.0 0.0 3.4 T T 0.0 0.0 0.0 3.4
1975-76 0.0 0.0 0.0 0.0 T 0.0 0.0 0.0 0.0 0.0 0.0 0.0 T
1976-77 0.0 0.0 0.0 0.0 T 0.0 5.4 0.0 0.0 0.0 0.0 0.0 5.4
1977-78 0.0 0.0 0.0 0.0 0.0 0.0 5.9 2.0 0.3 0.0 0.0 0.0 8.2
1978-79 0.0 0.0 0.0 0.0 0.0 0.0 T 1.5 0.0 0.0 0.0 0.0 1.5
1979-80 0.0 0.0 0.0 0.0 T 0.0 0.0 1.4 T 0.0 0.0 0.0 1.4
1980-81 0.0 0.0 0.0 0.0 1.3 0.0 0.7 0.1 0.0 0.0 0.0 0.0 2.1
1981-82 0.0 0.0 0.0 0.0 0.0 T 5.6 T T 0.0 0.0 0.0 5.6
1982-83 0.0 0.0 0.0 0.0 0.0 T T T 0.0 0.0 0.0 0.0 T
1983-84 0.0 0.0 0.0 0.0 0.0 5.4 T T 0.0 0.0 0.0 0.0 5.4
1984-85 0.0 0.0 0.0 0.0 0.0 0.0 0.4 4.4 0.0 0.0 0.0 0.0 4.8
1985-86 0.0 0.0 0.0 0.0 0.0 0.0 T T 0.0 0.0 0.0 0.0 T
1986-87 0.0 0.0 0.0 0.0 0.0 T 0.0 T T 0.3 0.0 0.0 0.3
1987-88 0.0 0.0 0.0 0.0 0.0 0.0 1.2 0.8 0.0 0.0 0.0 0.0 2.0
1988-89 0.0 0.0 0.0 0.0 0.0 0.0 T T T 0.0 T 0.0 T
1989-90 0.0 0.0 0.0 0.0 0.0 T 0.0 T 0.0 0.0 0.0 0.0 T
1990-91 0.0 0.0 0.0 0.0 0.0 T 0.0 T 0.0 T T 0.0 T
1991-92 0.0 0.0 0.0 0.0 0.0 0.0 T T T 0.0 0.0 0.0 T
1992-93 0.0 0.0 0.0 T T 0.0 T T 1.0 T 0.0 0.0 1.0
1993-94 0.0 0.0 0.0 0.0 0.0 T 0.0 0.4 T T T 0.0 0.4
1994-95 0.0 0.0 0.0 0.0 T 0.0 T T 0.0 T 0.0 0.0 T
1995-96 0.0 0.0 0.0 0.0 0.0 0.0 T 0.4 0.0 0.0
1996-97 0.0 0.0 0.0 0.0 0.0 0.3 0.1 T 0.0 T 0.0 0.0 0.4
1997-98 0.0 T 0.0 0.0 T 0.0 T T T 0.0 0.0 0.0 T
1998-99 0.0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 T 0.0 0.0 0.0 0.1
1999-00 0.0 0.0 0.0 0.0 0.0 T 1.1 T T T T 0.0 1.1
2000-01 0.0 0.0 0.0 0.0 T 2.2 T 0.0 0.0 0.0 T 0.0 2.2
2001- 0.0 0.0 0.0 0.0 T T
POR=48 YRS 0.0 0.0 0.0 T 0.0 0.2 0.7 0.4 0.2 0.0 T 0.0 1.5



User Contributions:

Lark
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Jan 19, 2012 @ 8:08 am
I'm not quite sure how to say this; you made it etxremely easy for me!

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