The major winter storm crossing the nation is causing dramatic declines in temperatures across the central US as arctic air pushes south and east.
In less than 18 hours, from 7:40 a.m. Wednesday to 1:35 a.m. Thursday, the temperature dropped 70 degrees.
7:40 a.m. Wednesday: 28 degrees.
8 a.m. Wednesday: 3 degrees.
Casper dropped 25 degrees in just 20 minutes Wednesday.
1:35 a.m. Thursday: minus 42 degrees
6:00 a.m. Thursday: minus 35 degrees with a wind chill of minus 76 degrees.
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Dropped 65 degrees in 16 hours.
12:58 p.m. Wednesday: 50 degrees.
4:58 a.m. Thursday: minus 15 degrees.
The largest plunge came when temperatures dropped 47 degrees in just two hours Wednesday from 46 degrees at 3:58 p.m. to minus 1 degree at 5:58 p.m.
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Dropped 42 degrees in six hours.
11:53 p.m. Wednesday: 41 degrees.
5:53 a.m. Thursday: minus 1 degree.
The current wind chill this morning is minus 7 degrees.
Dropped 36 degrees in nine hours.
9:53 p.m. Wednesday: 34 degrees.
6:53 a.m. Thursday: minus 2 degrees.
However the temperature dropped 20 degrees from 32 to 12 in just one hour between 11:53 p.m. and 12:53 a.m. Wednesday night.
Temperatures are still falling and are expected to bottom out near minus 4 later Thursday morning.
Kansas City, Missouri
Dropped 30 degrees in 6 hours.
11:54 p.m. (Wednesday): 32 degrees.
5:54 a.m. (Thursday): 2 degrees.
And temperatures are forecast to continue falling this morning, bottoming out near minus 7 by midday.
Dropped 34 degrees in 14 hours.
4:52 p.m. (Wednesday): 42 degrees.
6:52 a.m. (Thursday): 8 degrees.
The biggest plunge was 23 degrees in just 2 hours early this morning when temperatures dropped from 37 at 2:52 a.m. to 14 degrees at 4:52 a.m.
Temperatures are expected to bottom out near 4 degrees later Thursday morning.