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Contents of This Report:
Through climate analysis, National Climatic Data Center scientists have identified nine climatically consistent regions within the contiguous United States which are useful for putting current climate anomalies into an historical perspective.
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No state ranked within the top ten warm or top ten cold for September-November 2000. It was the 11th coolest autumn season on record for Wyoming and the 12th coolest such season since 1895 for Washington. Eighteen other states ranked within the cool third of the distribution.
Five additional states ranked within the warm third portion of the historical distribution for autumn 2000. |
| It was the tenth wettest September-November on record for North Dakota, the only state within the top ten wet portion of the distribution. Fifteen other states ranked within the wet third of the distribution.
Thirteen states, mostly in the mid-Atlantic and Northeast regions, ranked within the dry third portion of the distribution. |
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September-November Regional Highlights
Based upon preliminary data, autumn, September-November 2000, was the 16th coolest such season since 1895 for the Northwest region. The last two autumn seasons have been much above the long term mean.
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After the third wettest autumn season since 1895 just last year, autumn 2000 was the 18th driest such season since 1895 for the Northeast region.
It was the 14th wettest autumn on record for the Southwest region. After recording the 13th driest September on record, October was the second wettest such month since 1895 and November precipitation ranked near the mid-range.
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September-November Precipitation and Temperature Ranks, Extremes and Normals
Table 1 shows precipitation and temperature ranks for each of the 9 regions and the nation for autumn, September-November 2000.1 = DRIEST/COLDEST, 106 = WETTEST/HOTTEST. REGION PRECIPITATION TEMPERATURE ------ ------------- ----------- NORTHEAST 18 46 EAST NORTH CENTRAL 51 73 CENTRAL 38 52 SOUTHEAST 51 17 WEST NORTH CENTRAL 84 26 SOUTH 88 48 SOUTHWEST 93 25 NORTHWEST 29 16 WEST 43 32 NATIONAL 61 29 *National Temperature Rank Based on a combination of USHCN and divisional data.It should be emphasized that all of the temperature and precipitation ranks and values in Tables 1 and 2 are based on preliminary data. The ranks will change whenPRECIPITATION (INCHES) DRIEST WETTEST NORMAL 2000 REGION VALUE YEAR VALUE YEAR PCPN PCPN ------ ---------- ---------- ------ ------ NORTHEAST 5.01 1908 15.54 1977 10.82 8.27 EAST NORTH CENTRAL 2.92 1976 11.82 1941 7.96 7.09 CENTRAL 3.99 1953 14.92 1926 10.20 8.42 SOUTHEAST 4.27 1931 17.71 1929 10.79 10.29 WEST NORTH CENTRAL 1.21 1952 6.41 1946 3.44 4.08 SOUTH 3.79 1917 13.88 1986 9.19 10.44 SOUTHWEST 0.95 1956 6.51 1972 3.48 4.23 NORTHWEST 1.51 1936 11.35 1973 7.16 6.05 WEST 0.38 1929 7.46 1982 3.85 2.86 NATIONAL 4.14 1952 9.48 1985 7.11 6.91* * PRELIMINARY VALUE, CONFIDENCE INTERVAL + OR - 0.29 INCHES TEMPERATURE (DEGREES F) COLDEST WARMEST NORMAL 2000 REGION VALUE YEAR VALUE YEAR TEMP TEMP ------ ---------- ---------- ------ ------ NORTHEAST 45.2 1917 53.8 1931 49.1 49.1 EAST NORTH CENTRAL 41.6 1896 52.5 1931 46.6 47.7 CENTRAL 49.9 1976 61.2 1931 55.4 55.4 SOUTHEAST 59.5 1976 67.9 1919 63.9 63.0 WEST NORTH CENTRAL 38.0 1985 50.3 1963 44.5 43.4 SOUTH 58.2 1976 68.2 1931 63.2 63.2 SOUTHWEST 49.9 1912 56.1 1963 52.9 51.7 NORTHWEST 41.9 1985 50.3 1963 47.3 45.9 WEST 53.2 1985 59.2 1995 56.3 55.4 NATIONAL* 51.6 1976 57.3 1963 54.0 53.6 * National Temperature Values based on combination of USHCN and divisional data.
For more information, refer to ...References:
Thomas R. Karl and Albert J. Koscielny, 1982: "Drought in the United States: 1895-1981." Journal of Climatology, vol. 2, pp. 313-329.
Thomas R. Karl and Walter James Koss, 1984: "Regional and National Monthly, Seasonal, and Annual Temperature Weighted by Area, 1895-1983." Historical Climatology Series 4-3, National Climatic Data Center, Asheville, NC, 38 pp.
NOAA's National Climatic Data Center is the world's largest active archive of weather data. The preliminary temperature and precipitation rankings are available from the center by calling: 828-271-4800.
Historical precipitation and temperature ranking maps are also available on the Internet courtesy of the Climate Prediction Center.
NOAA works closely with the academic and scientific communities on climate-related research projects to increase the understanding of El Niño and improve forecasting techniques. NOAA's Climate Prediction Center monitors, analyzes and predicts climate events ranging from weeks to seasons for the nation. NOAA also operates the network of data buoys and satellites that provide vital information about the ocean waters, and initiates research projects to improve future climate forecasts. The long lead climate outlooks are available from the Climate Prediction Center.
For all climate questions other than questions concerning this report, please contact the National Climatic Data Center's Climate Services Division:
Climate Services DivisionFor further information on the historical climate perspective presented in this report, contact:
NOAA/National Climatic Data Center
151 Patton Avenue
Asheville, NC 28801-5001
fax: 828-271-4876
phone: 828-271-4800
email: ncdc.orders@noaa.gov
William Brown
NOAA/National Climatic Data Center
151 Patton Avenue
Asheville, NC 28801-5001
fax: 828-271-4328
email: william.brown@noaa.gov
-or-
Jay Lawrimore
NOAA/National Climatic Data Center
151 Patton Avenue
Asheville, NC 28801-5001
fax: 828-271-4328
email: jay.lawrimore@noaa.gov
NCDC / Climate Research / Climate of 2000 / September-November / Search / Help
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http://lwf.ncdc.noaa.gov/oa/climate/research/2000/aut/us_regional.html Downloaded Tuesday, 08-Jul-2008 22:59:15 EDT Last Updated Wednesday, 06-Jul-2005 12:48:04 EDT by William.Brown@noaa.gov Please see the NCDC Contact Page if you have questions or comments. |
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