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U.S. Department of Commerce logo and link to site Climate of 2003 - February
U.S. Regional Drought Watch

National Climatic Data Center, 14 March 2003

NOAA logo and link to site
Global Analysis / Global Hazards / United States / U.S. Drought / Extremes
Use these links to access detailed analyses of Global and U.S. data.

Regional Drought Overview / Western U.S. / Central U.S. / Eastern U.S. / Additional Contacts / Questions

Top of Page Regional Overview

  • Above-normal precipitation fell across many drought areas during February 2003, but others received below-normal precipitation.
  • Much of the Great Lakes to northern Plains region had a fourth consecutive dry month.
  • The Pacific Northwest saw a return to drier than normal conditions this month after a two-month wet reprieve.
  • The stations in southeastern Alaska were drier than normal this month, but the rest of the stations were generally wet. Unusually warm February temperatures across the state caused more precipitation to fall as rain rather than snow, resulting in a much below-normal snowpack over much of the state. This resulted in Iditarod Trail Sled Dog Race officials approving a detour because of a lack of snow on the normal route, the first time in the history of the race.
  • The precipitation pattern at the primary stations in Hawaii and Puerto Rico was mixed.

February 2003 1-month Standardized Precipitation Index

  • The persistent short-term dryness across the Great Lakes to Great Plains compounded drought conditions in that region, while long-term drought continued across much of the West. Several states had the driest December-February or November-February in the 109-year record this year.
  • February saw a return to wet conditions across much of the east coast, with long-term deficits mostly erased. Exceptions include Maine, which has experienced dry conditions on both the short-term and long-term timescales, and the Carolinas and Georgia, where moisture deficits continued at only the 24-month timescale.

February 2003 Palmer Hydrological Drought Index

The long-term dryness is also evident in the pattern of snowfall anomalies. Season-to-date (July 1, 2002 - February 28, 2003) snowfall has totaled below the long-term average across much of the Far West, Great Plains, Great Lakes, and northern New England regions.

These overall conditions are evident in the following indicators:

A detailed review of drought conditions is available for the following regions and states:

U.S. standard regions
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Top of Page Western U.S. Drought

February marked a return to drier-than-normal conditions for the Pacific Northwest after two above-normal months. The West region experienced a second consecutive drier-than-normal month. With the exception of a wet December and near-normal November, every month since January 2002 averaged drier-than-normal for the West region. February was unusually wet for the Southwest region and parts of the central and northern Rockies.
Northwest Region precipitation departures, January 1998-present
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West Region precipitation departures, January 1998-present
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However, long-term deficits remained for much of the West, with several states ranking in the top ten driest category for March 2002-February 2003. Moderate to extreme drought still covered about two-thirds of the western U.S. (Rocky Mountains to west coast) at the end of February. These long-term drought conditions were reflected in below-average snow cover as monitored by snow course measurements, mountain SNOTEL station reports, and satellite observations, as well as by low reservoirs. The winter mountain snowpack is the source of spring meltwater which fills western reservoirs and is used for irrigation during the spring and summer growing seasons. As noted by the USDA Natural Resources Conservation Service, the below-average snowpack is expected to result in below-average streamflow during the spring and summer.

Northwest Region precipitation, March-February, 1895-2003
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statewide precipitation ranks, March 2002-February 2003
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A detailed review of drought conditions is available for several western states and regions.


Top of Page Central U.S. Drought

Although parts of the North Central U.S. received precipitation during February, much of the area from the Great Lakes to the northern Plains had a drier than average month. This month marked the fourth consecutive dry month for the East North Central region, which experienced the driest November-February on record. Several North Central states had the driest November-February or driest winter (December-February) on record.

East North Central Region precipitation, November-February, 1895-2003
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statewide precipitation ranks, November 2002-February 2003
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The dryness has significantly depleted soil moisture from the central Plains to the Great Lakes. This is evident in modeled soil moisture departures as computed by the NOAA Climate Prediction Center and the Midwest Regional Climate Center at both the top soil layers and deeper layers.

February precipitation was near-normal when averaged across the West North Central region. However, the last four months gave the region a rank of fifth driest November-February and the long-term deficits rank March-February as the tenth driest such 12-month period.

Media reports (CNN.com) have illustrated the impact of the drought:

  • Ranchers from the Dakotas to Kansas are selling their cattle because they cannot feed them. Some grain farmers could do nothing but watch as the drought dried up their crops.
  • Nebraska has seen its driest period since the Dust Bowl days of the 1930s, and the state's economy lost an estimated $600 million on crops, hay, pastures and ranges last year. Some farmers and ranchers are facing their third or fourth year of drought.

A detailed review of drought conditions is available for several central U.S. states and regions.


Top of Page Eastern U.S. Drought

This month saw a return to wet conditions across much of the eastern U.S., with only a few pockets of drought remaining. February averaged near normal across Maine, but dryness in both the short- and long-term gave the state the eighth driest January-February, fifth driest August-February, and 25th driest March-February in the 109-year record. Long-term moisture deficits remained over the Carolinas and Georgia at the 24-month timescale.

A detailed review of drought conditions is available for several eastern states and regions.

Maine Statewide Precipitation, August-February, 1895-2003
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24-month Standardized Precipitation Index
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Top of Page Additional Contacts:

Damage due to the drought has been summarized by NOAA and the Office of Global Programs in the Climatological Impacts section of the Climate Information Project. Crop impact information can be found at the USDA NASS (National Agricultural Statistics Service) and Weekly Weather and Crop Bulletin pages. Drought statements by local National Weather Service Offices can be found at the NWS Hydrologic Information Center. Drought threat assessments and other information can be found at NOAA's Drought Information Center. Additional drought information can be found at the National Drought Mitigation Center, the USDA's National Agricultural Library, the interim National Drought Council, and the NOAA Paleoclimatology Program. The following states have set up web pages detailing current drought conditions and/or their plans to handle drought emergencies:

For additional information on current and past wildfire seasons please see the National Interagency Fire Center web site or the U.S. Forest Service Fire and Aviation web site.

NCDC's Drought Recovery Page shows the precipitation required to end or ameliorate droughts and the probability of receiving the required precipitation.

Additional climate monitoring graphics can be found at the Climate Prediction Center's monitoring pages:

Precipitation and modeled soil moisture anomaly maps for the Midwest U.S. can be found at the Midwest Regional Climate Center's monitoring page.

Drought conditions on the Canadian prairies can be found at the Agriculture and Agri-Food Canada Drought Watch page.

Top of PageFor all climate questions other than questions concerning this report, please contact the National Climatic Data Center's Climate Services Division:

Climate Services Division
NOAA/National Climatic Data Center
151 Patton Avenue
Asheville, NC 28801-5001
fax: 828-271-4876
phone: 828-271-4800
email: ncdc.info@noaa.gov
For further information on the historical climate perspective presented in this report, contact:

Richard Heim
NOAA/National Climatic Data Center
151 Patton Avenue
Asheville, NC 28801-5001
fax: 828-271-4328
email: Richard.Heim@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
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