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Mass die-offs from human impact and planetary response to the assault could occur by early 2016

Posts Tagged ‘Maximum heat index’

Deadly Heat Wave Affects Third of U.S. Population

Posted by feww on June 30, 2012

Deadly storms pummel mid-Atlantic, knock out power to 3 million customers

A day of record-setting heat spawned deadly storms across Washington metropolitan area, leaving at least 7 people dead, and millions without power.

The storms cut power to about 3 million customers, or an estimated 10 million people, across Washington, D.C., Maryland, and the two Virginias.

West Virginia Gov. Tomblin has declared a state of emergency after storm damage which left more than half a million customers in 27 counties without power.

“The damage from today’s storms is widespread and in many places severe,” Tomblin said.

Record Breaking Heat

More than 20 million people were in areas under excessive heat warnings and almost a third of the population  in areas under heat advisories.

  • At least 1,000 high temperature records have been broken across the country in recent days.
  • The Washington area on Friday broke a record high temperature set 8 decades ago.  The early afternoon temperature at Washington Reagan National Airport rose to 104 degrees (40ºC) smashing the record 101 degrees set in 1934, NWS reported.
  • Norton, Kansas, was the hottest location in the U.S. with 118 degrees (47.8ºC), NCDC reported. Some 22 other locations across the state topped 110 degrees on Thursday.
  • Columbia, South Carolina and Nashville, Tennessee reached all-time records of 109 degrees  (42.8ºC) on Friday
  • Atlanta, Georgia and Louisville, Kentucky also saw temperature soaring to 104ºF (40ºC)
  • In addition to the fatalities caused by wildfires, which were intensified by the heat, at least a dozen people have died directly as a result of the intense heat including 3 children, two in Tennessee and a third in Missouri.

High Temperature Map of the U.S.

More than 1,000 high temperature records have been broken across the country in the last 7 days.

Daily Maximum Heat Index – Forecast

Indiana.  Oppressive heat is churning up storms across central Indiana with the entire region placed under a severe thunderstorm watch.

  • Storms knocked out power to at least 100,000 customers.
  • A record high temperature of 104 degrees was recorded at Indianapolis International Airport on Thursday, the highest ever in the month of June in the city, a report said.

Earlier, NWS issued Severe Thunderstorm Warnings for the region

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN.

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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.

Drought


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.”

Illinois

“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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