Record Breaking Warmth Across Western & North Central Nebraska January 5th

With an upper level ridge of high pressure in place across Nebraska on Thursday, January 5th - and a surface trough of low pressure which extended from north central into southwestern Nebraska at mid afternoon - unseasonably warm temperatures resulted across our region.

This warmth will be short lived, as a cold front of Canadian origin sweeps south into Nebraska tonight.  Much colder temperatures will be the result on Friday, in the wake of this cold front. However even with high temperatures on Friday which warm into the middle and upper 40s, these temperatures will average 7 to 12 degrees above normal for this time of year.

Record high temperatures for January 5th were set in Imperial, North Platte and Valentine, and the record maximum temperature for Broken Bow was tied.  Compressional warming ahead of the advancing cold front, along with favorable westerly downslope winds, and a layer of warm air right above the ground, really helped temperatures warm Thursday afternoon to balmy levels.

Location (ASOS) High Temperature January 5th Record High Temperature Jan. 5th

North Platte 69 degrees Old record 67 degrees in 1935 and 1927
Valentine 69 degrees Old record 65 degrees set in 1930
Broken Bow 67 degrees Tied record maximum temperature with 1989
Imperial 73 degrees Old record was 70 degrees in 1927

Surface map positions valid at 3 PM CST January 5th, 2012

(Surface map positions above, valid at 3 PM CST January 5th, 2012)
For a surface loop (Windows Media Player) please click here
(Caution: 6.1 MB size - may be slow to load dependent on bandwidth)

Please note in the upper air soundings from the morning of January 5th at North Platte and Rapid City
that a layer of very warm air was indicated right above the surface.  Mixing from westerly winds and
compressional warming ahead of the advancing cold front helped realize very unseasonable temperatures region wide.

North Platte upper air sounding Wednesday morning January 5th, 2012
(Above, the North Platte upper air sounding taken Thursday morning January 5th, 2012)
Above, the Rapid City upper air sounding taken Wednesday morning January 5th, 2012
(Above, the Rapid City upper air sounding taken Thursday morning January 5th, 2012)

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by
Steve Carmel

 


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