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A strong low pressure system moved through Canada and pushed a strong cold front through the Western states. This allowed for rain and high elevation snow showers to develop for Utah, Montana, and Wyoming. Rainfall totals ranged from 1 to 2 inches, while 2 to 4 inches of snow developed at elevations above 8,000 feet.

Heavy rainfall developed ahead of this system to the east, with 1.50 inches of rain reported at Sheboygan, Wisconsin. Severe thunderstorms developed across the upper Midwest as this system advanced eastward. Large hail has been reported from eastern South Dakota through southern Minnesota and across Wisconsin. Hail up to 2 inches in diameter was reported in Sabin, Wisconsin, while heavy rain with nickel to quarter size hail was reported at Waukesha, Wisconsin.

South of this activity, dry air and windy conditions created dangerous fire weather for the central and southern Plains. Red flag warnings have been issued from Nebraska through Texas due to 35 mph wind gusts and humidity at 10%. The Plains remained under a slight chance of severe thunderstorm activity through Wednesday afternoon and evening. This enhanced the threat of wildfire spread as any lightning activity may spark grass and wildfires. Strongest winds by midday on Wednesday reached 52 mph at Guadalupe Pass, Texas.

WEDNESDAY'S WEATHER EXTREMES:

HIGHEST TEMPERATURE (DEGREES F).........................99 Altus, Okla.

HIGHEST HEAT INDEX (DEGREES F)..........................99 Laredo, Texas

LOWEST TEMPERATURE (DEGREES F)..........................19 Saranac Lake, N.Y.

LOWEST WIND CHILL (DEGREES F)...........................1 Mt. Washington, N.H.

HIGHEST WIND GUST (MPH).................................52 Guadalupe Pass, Texas

HIGHEST PRECIPITATION (INCHES)..........................1.50 Sheboygan, Wis.

ON THIS DATE....... The most destructive tornado before the advent of the Weather Bureau hit Natchez, Mississippi, on this date in 1840, killing 317 people and causing over a $1 million in damage. The force of the storm was so strong that houses were reported to have burst open.

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