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Area forecast discussion 
National Weather Service North Platte NE
528 PM CST Tuesday Mar 3 2015

issued at 330 PM CST Tuesday Mar 3 2015

At 500 mb closed low over Winnipeg with trough extending southwest
into Southern California. High over the Gulf of Mexico ad ridge
over the eastern Pacific.


Short term...(this evening through wednesday)
issued at 330 PM CST Tuesday Mar 3 2015

Water vapor imagery shows a the next shortwave across southwest
Wyoming/northwest Colorado late this afternoon. This wave will
translate east across the area tonight...with chances for snow
increasing this evening and overnight across west central through
southwest Nebraska. It should remain dry across northern Nebraska.

Models agree that a narrow band of light to perhaps moderate snow
will develop from northeast Colorado...eastward across far southwest
Nebraska and into far south central Nebraska late this evening. The
band will not last long...around 3 or 4 hours. Could see an inch or
two within this band. Initially cross sections indicate dry air in
the lower levels of the atmosphere...and this is currently supported
by 20 degree plus temperature/dew point spreads. As the system moves
east into the area by late evening...deep lift will
increase...maximized across far southwest Nebraska by around 06z or
so. Lift will be weaker to the north toward Interstate 80. Should
see a fairly quick top down saturation late this
evening...especially across far southwest Nebraska where the
stronger lift will be located. The latest rap model indicates a
little better lift within the dgz /earlier model runs were just
above the dgz/ so that gave a boost of confidence...and will take
low end likely probability of precipitation all the way north into the Interstate 80
corridor region...which is supported by the new 18z NAM model

Clouds will gradually decrease drier air aloft
advects into the area through the day. Winds will also be on the
decrease. Still pretty cold Wednesday...with h850mb not warming much
through the day...and staying well below zero.

Long term...(wednesday night through tuesday)
issued at 330 PM CST Tuesday Mar 3 2015

Models in good agreement in the middle and long term solutions and
have good confidence in the forecast. Can see some snow on the
ground over northern Sheridan County through central Cherry County
but over the remainder of the forecast area ground looks pretty
bare. Wednesday night have lows in the single digits with below
zero temperatures over northern Sheridan County. 850mb
temperatures rising through the day on Thursday as upper trough
moves east and warmer drier air moves east into the forecast area.
Quasi block along the West Coast will slow progression of upper
pattern leaving northern plains in fast northwest flow. Weak wave
will move through northwest pattern Saturday with mainly just a
wind shift. Temperatures rising into the 50s. Another weak wave
moving through Sunday night will pull another weak cool front
through the forecast Monday dry. Temperatures will continue slow
climb through the coming week and dry forecast.


Aviation...(for the 00z tafs through 00z Wednesday evening)
issued at 525 PM CST Tuesday Mar 3 2015

An upper system coming across Nebraska tonight will bring areas of
light snow to central and southwest Nebraska late this evening.
Once the light starts it is likely to last four to eight hours.
Ceilings with the light snow are likely to be 1000-1500 feet above ground level
with visibility 2-3sm.


Lbf watches/warnings/advisories...



short term...Taylor
long term...power

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