Area Forecast Discussion
Issued by NWS North Platte, NE

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FXUS63 KLBF 210516

Area Forecast Discussion
National Weather Service North Platte NE
1116 PM CST Mon Nov 20 2017

.SHORT TERM...(This evening through Tuesday)
Issued at 318 PM CST Mon Nov 20 2017

Latest satellite imagery shows a dense shield of opaque cirrus
streaming into western NEB. Latest mesoanalysis shows a surface
low with a central pressure of about 987 mb over the southern
border of Manitoba-Ontario with a cold front extending through ND
to far northwestern SD. Latest water vapor imagery shows a
shortwave trough digging into southern Manitoba and another
tracking eastward across the Pacific Northwest. Otherwise, low
amplitude northwest flow persists overhead.

The surface cold front will advance through the area overnight
with winds shifting and becoming northerly late tonight. Increased
chances for precipitation late tonight, best chances across
northern NEB. Breezy post-frontal winds are expected tomorrow with
gusts up to 25 MPH, strongest over north central NEB. Highs will
be about 20-25 degrees cooler tomorrow compared to today.

.LONG TERM...(Tuesday night through Monday)
Issued at 318 PM CST Mon Nov 20 2017

Tuesday night through Friday, an upper level trough will move over
the Great Lakes Region Tuesday afternoon into Wednesday bringing
cooler air with it. Lows on Tuesday night will be in the 20s,
making this one of the cooler nights the next 7 day. For Wednesday
cooler high temperatures will extend back into the far
northeastern part of our CWA, keeping temperatures cooler on
Wednesday with highs in the 50s. The rest of our CWA will maintain
the warmer temperatures with a ridge in the Western CONUS,
keeping highs in the 60s. After Wednesday temperatures will stay
in the 60s through Friday across the entire CWA as the ridge of
high pressure continues to sit across the Western CONUS.

Saturday through Monday, another upper level trough with an
associated cold front will move across the area Friday night,
bringing slightly cooler temperatures in time for the weekend,
with highs in the 50s.

No precipitation is expected over the next 7 days as high pressure
will keep moisture limited across the CWA.


.AVIATION...(For the 06Z TAFS through 06Z Tuesday night)
Issued at 1115 PM CST Mon Nov 20 2017

Latest satellite imagery shows a combination of high cirrus and
mid clouds from 10-12k feet agl moving into western Nebraska. VFR
conditions currently prevail with northwest winds from 5 to 15
kts. A cold front advances across the area overnight with winds
becoming northerly. Late tonight ceilings will lower across
western Nebraska becoming low-end VFR (less than 7 kft) at some
terminals. Otherwise, low end chances for light rain, changing to
light snow beginning 06z and lasting until 12z Tuesday morning
across northern Nebraska. This includes the KVTN terminal.
Clearing skies Tuesday, with winds near 34014g21kt in the morning,
diminishing in the afternoon.


Issued at 318 PM CST Mon Nov 20 2017

Latest surface plot shows RH ranging between 5-15 percent across
far southwest NEB and the southeast Panhandle into parts of the
western Sandhills. Elsewhere, afternoon humidity spans largely
between 15 and 25 percent. Gusty west winds prevail across far
southwest NEB and the eastern Panhandle with gusts up to 30 MPH,
elsewhere gusts up to 20 MPH are more common. A Red Flag warning
remains in effect until 5 PM MST for fire weather zones 204 and
210. Relative humidity will improve during the late afternoon,
along with decreasing winds.

Low fire weather concerns exist tomorrow attributable to a cold
frontal passage tonight. Of which, cooler and higher humidity
will prevail Tuesday.




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