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

National Climatic Data Center, 14 November 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 / Additional Contacts / Questions

Top of Page Regional Overview

Most of the drought areas were dry during October, resulting in intensifying drought conditions across much of the West to the western Great Lakes. Heavy rains ended drought over parts of Washington state, but the month was dry across much of the West, Great Plains, and Upper Midwest to Great Lakes, and parts of the Southeast. Unusually warm temperatures accompanied the dryness across much of the West and into the Great Plains. The primary stations in Hawaii and in southeastern and east central Alaska were drier than normal during October. The precipitation pattern for the stations in Puerto Rico for the last 4 weeks to 8 weeks was generally mixed with drier than normal stations located mostly in the northeast.

Palmer Z Index
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Across much of the drought area, the October dryness was a continuation of dry conditions from the summer and early fall (September, August, and July). Even longer-term moisture deficits (last 12 to 24 months) persisted across parts of the Great Lakes to central and northern Plains and most of the West.

Current Month Palmer Hydrological Drought Index
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Some regional highlights:

  • Colorado had its sixth driest and California its seventh driest October, and Iowa its third driest, Minnesota its sixth driest, and Wisconsin its seventh driest August-October, in 2003, based on statewide records going back to 1895
  • according to November 2 reports from the USDA,
    • 50% or more of the topsoils were classified in "poor" or "very poor" ("short" or "very short") condition for all of the reporting states across the main drought areas
    • 80% or more of the topsoils were classified in "poor" or "very poor" ("short" or "very short") condition for New Mexico, Colorado, Idaho, and Oregon
  • according to November 3 reports from the USDA,
    • 50% or more of the pasture and range land was classified in "poor" or "very poor" condition for the central and northern Plains states from Colorado to Wisconsin
    • about 40% or more of the pasture and range land was classified in "poor" or "very poor" condition for all of the states from the Rocky Mountains westward
    • the percentages were 95% for California, 83% for New Mexico, and 78% for Montana
  • end-of-October reservoir storage for all of the reporting western states averaged below the long-term mean percent of capacity for this time of year
  • the percent area of the western U.S. (Rockies westward) experiencing moderate to extreme drought (as defined by the Palmer Drought Index) increased during October to about 80%, which is near record historical levels
  • over a dozen large wildland fires were burning at the end of October, mainly in California but also in New Mexico, Colorado, Utah, and Oklahoma

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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Statewide Precipitation Ranks
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Percent of Normal Precipitation
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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:

Colorado - Delaware - Delaware River Basin (DE-NJ-NY-PA) - Florida Panhandle - Georgia - Hawaii - Idaho - Kentucky - Maine - Maryland - Missouri-1 - Missouri-2 - Montana-1 - Montana-2 - Nebraska - New Jersey-1 - New Jersey-2 - New Jersey-3 - New Mexico - North Carolina - Oklahoma-1 - Oklahoma-2 - Oklahoma-3 - Oregon - Pennsylvania-1 - Pennsylvania-2 - Pennsylvania-3 - South Carolina - Texas - Vermont - Virginia - Washington - Wyoming

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 Page For 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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