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Acold front triggered severe weather threats in the northern Midwest on Wednesday, while the Northeast felt the effects of a high pressure system.

Strong thunderstorms developed over the northern Plains on Wednesday as a result of a cold front that stretched over the Rockies and northwest Plains. Warm, moist air over the Midwest interacted with this cold front to create hazardous conditions throughout the Dakotas and parts of western Minnesota. Strong thunderstorms also developed over the Ohio Valley on Wednesday, producing roughly a quarter inch of rain per hour in some spots.

The Northeast felt slightly warmer temperatures today as a high pressure system stationed itself over New England. This high pressure pulled warm air from the south into the Mid-Atlantic and Northeast, while clear conditions accompanied the system.

The high temperature in Boston was 73(F)/ 23(C), while New York experienced a high of 71(F)/ 21(C). A cold front moved through Florida, Mississippi, and Alabama on Wednesday, producing unsettled weather continued to impact around the Gulf Coast and Florida Peninsula. Southern Texas also experienced spotty thunderstorms today.

Wet weather affected the Pacific Northwest coast, while the majority of the Southwest sat under a high pressure system. This high pressure system kept temperatures very warm inland, as the Southern California and Arizona deserts experienced temperatures above 100 degrees.

WEDNESDAY'S WEATHER EXTREMES:

HIGHEST TEMPERATURE (DEGREES F).........................100 Goodyear, Ariz.

HIGHEST HEAT INDEX (DEGREES F)..........................111 Ellington Field, Texas

LOWEST TEMPERATURE (DEGREES F)..........................24 Truckee-Tahoe, Calif.

LOWEST WIND CHILL (DEGREES F)...........................5 Anaktuvuk Pass, Alaska

HIGHEST WIND GUST (MPH).................................77 Hattiesburg, Miss.

HIGHEST PRECIPITATION (INCHES)..........................4.01 Pompano Beach, Fla.

ON THIS DATE....... Every hiker should be prepared for the worst. Today in 1997, a man was hiking in the Sierra Nevadas of Fresno County above 12,000 feet when winter weather struck. When his sleeping bag and only form of protection got wet, he developed hypothermia and died.

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