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Posts Tagged ‘U.S. heat index’

Heat, Worsening Drought Kill Thousands of Cattle

Posted by feww on July 22, 2011

Mounting Human Toll Yet to Be Revealed

Deadly heat across the central and eastern United States  expands into the Ohio Valley and East Coast States

Highest heat indexes reported over the southern Plains, the Midwest, the Ohio Valley and the Mid-Atlantic: NWS

At least 5,000 cattle have died from heat in Minnesota, Nebraska and South Dakota, reports said.

Composite Hazard Map Covering Temperature and Wind Threats, Precipitation, Soil/Wildfire Conditions. Click image to enlarge.

Maximum Daily Heat Index Map – Forecast. Click image to enlarge.


Current U.S. Drought Monitor. Click image to enlarge.

Highlights and Excerpts from the Weekly Report

  • Great Plains:  The drought conditions across the Southern Great Plains persisted, and worsened across most areas.
    • Texas: 94% of the range and pastureland was described as being in poor or very poor condition— a record weekly value.
    • Oklahoma: Across Oklahoma, 78% of the range and pastureland described as poor or very poor.
  • Great Lakes: Continued dryness that began about 60 days ago prompted the introduction of an area of abnormal dryness (D0) to the map across the lower Great Lakes region.
    • Across western New York and Pennsylvania, continued dry conditions lead to an expansion of the recently introduced D0 area.
  • Southeast and mid-Atlantic: A dry pattern persisted for the Carolinas, prompting a slight expansion in coverage of all the drought categories.
  • Rockies and Southwest: Rainfall (approximately 0.5 inch) associated with monsoonal moisture contributed to a small improvement across northwest New Mexico (McKinley County).  The central portions of New Mexico remained dry while some portions across the south received nearly 6 inches of rainfall.  Even with 4-6 inches falling in the Cloudcroft region, improvement could not be pursued as average rainfall is 5.2 inches.  Within the same climate division, most other stations reported less than 1 inch of total rainfall during July.
    • Colorado: Impacts from the drought continue to linger across the SW Colorado.

Temperature Forecast: Temperatures are expected to remain above normal for the central portions of the contiguous 48 states and below-normal along the Pacific Coast. (Source: )

Indiana and Ohio

“Their crops are behind, and to make things even worse, they are dry now, too,” said Ken Scheeringa, Indiana’s associate state climatologist.

The dry parts in the Midwest is forecast to expand merging into a larger area from eastern Iowa through northern Illinois, stretching into Ohio, Scheeringa said.

“That dome of hot air over Missouri-Kansas — that is so strong, it’s just overwhelming the whole United States now,” he said. “It’s huge.”


“I think all the heat that has developed out in the Plains has spilled over into the rest of the Midwest. That has certainly been a contributing factor,” said  the state climatologist for Illinois.

Corn Supplies

“Because corn supplies in the United States, the world’s largest producer and exporter of the grain, are projected to fall to a 16-year low by the end of August, the grain trade is counting on a large harvest this fall.” Said a report.

Soil Moisture Forecasts

Constructed Analog Forecasts based on Soil Moisture. Source: CPC

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Killer Heat Wave Continues in Central and Eastern U.S.

Posted by feww on July 21, 2011

Excessive heat and humidity expected to expand into the Ohio Valley and East Coast states this week: Forecasters

High heat index values of between 105 and 115 degrees through Friday (locally higher values possible) to expand into the Ohio Valley and East Coast, NWS reported.

Currently Excessive Heat Warnings, Watches and Heat Advisories are in effect over most of the central U.S., Ohio Valley and the Atlantic east coast from the Carolinas into New England.

US Weather Hazards Map.


Composite Hazard Map Covering Temperature and Wind Threats, Precipitation, Soil/Wildfire Conditions. Click image to enlarge.

Maximum Daily Heat Index Map – Forecast. Click image to enlarge.

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Killer Heat Persists in Central United States

Posted by feww on July 20, 2011

Excessive Heat Warnings, Heat Watches and Advisories are in effect in 19 states

All or parts of the following states are under Excessive Heat Warnings, Heat Watches and Advisories

Montana, North Dakota, South Dakota, Nebraska, Kansas, Oklahoma, Texas, Minnesota, Iowa, Missouri, Arkansas, Wisconsin, Illinois, Michigan, Indiana, Ohio, Kentucky, Tennessee and Mississippi

Red Flag Warnings
Red Flag Warnings are in effect in parts of Utah and Nevada.

Highest Heat Indexes

The highest recorded heat indexes in the U.S. were

    • Knoxville, Iowa: 131 (ºF)
    • Freeport, Illinois: 124
    • Madison, Minnesota: 124
    • Watertown, Wisconsin: 119
    • Tekamah, Nebraska: 117
    • Camberlain, South Dakota: 115

Heat Index Forecast:

  • Washington, DC: 116
  • Richmond, Virginia: 118

Maximum heat index forecast for July 22, 2011. Click image to enlarge.

Hazards Assessment Map

NWS has forecast that excessive heat will persist from today through July 29 in all the eastern half of the country except for the Northeast. Click image to enlarge.

Tuesday’s weather highlights for the central United States include:
  • Blazing heat continues in the Plains and gradually spreads across the Midwest
  • A band of states at risk of severe storms stretches from the Pacific Northwest to the Mid-Atlantic
  • Rain and thunderstorms over the Rockies, the eastern Great Lakes and the western Gulf Coast (Source: NOAA)

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