Area Forecast Discussion
Issued by NWS Hastings, NE

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859
FXUS63 KGID 182323
AFDGID

Area Forecast Discussion
National Weather Service Hastings NE
523 PM CST Wed Jan 18 2017

.SHORT TERM...(This evening through Thursday)
Issued at 415 PM CST Wed Jan 18 2017

A cut off upper low over western Kansas this afternoon will very
slowly slide east into central Kansas by Thursday afternoon.
Forecast models are in good agreement that there will be little if
any precipitation associated with this system. We do expect
southerly flow with a lee sfc trough through the period to allow for
increasing low level moisture and the development of a low stratus
deck. This pattern will sometimes result in fog along the western
edge of the stratus deck and this is being picked up on by the
forecast models for later tonight into Thursday morning. Can not
rule out dense fog, but the more likely haze/fog would be areas of
fog with visibilities of 1/2 to 2 miles.

Precipitation...We could see some light drizzle fall out of the
stratus deck on Thursday given sufficient saturation depth. However,
there is not much moisture very far aloft (700mb) and thus will call
for drizzle rather than rain.

.LONG TERM...(Thursday night through Wednesday)
Issued at 415 PM CST Wed Jan 18 2017

Overview...Cloudy, cool, and at times drizzle or light rain through
Friday night. Dry and mild over the weekend. Then a possible storm
system or systems early next week depending if it comes out as one
bigger system or in pieces.

Thursday night Through Friday night...We are going to be stuck under
some low stratus clouds and the persistent chance for light drizzle
especially across eastern zones. This will keep temperatures cooler
than today, but still above freezing. Fog and drizzle will be the
primary forecast concerns. Will continue to keep even night time
temperatures above freezing for areas that are seeing drizzle and
thus no freezing drizzle is expected.

Monday through Wednesday...The bigger storm system early next week
(Tuesday) is looking less impressive for our area than 24hrs ago.
The 12z ECMWF is further south and much weaker than previous model
runs. The 12Z GFS is still rather strong but further north taking
the more significant impacts into South Dakota. Forecast ensembles
are still all over the place from weak to strong and from around our
forecast area to generally north of our forecast area with this
Tuesday system.

&&

.AVIATION...(For the 00Z KGRI/KEAR TAFS through 00Z Thursday evening)
Issued at 525 PM CST Wed Jan 18 2017

Deteriorating conditions are expected at both terminals overnight
as stratus starts to spread northward from the south. LIFR
CIGS/VSBYS will eventually develop during the overnight
hours...with some marginal improvement expected late tomorrow
morning as VSBYS improve. Evenso, cloudy conditions will
prevail...with LIFR stratus not expected to vacate the local area
through the valid period of the TAFs.

&&

.GID WATCHES/WARNINGS/ADVISORIES...
NE...None.
KS...None.
&&

$$

SHORT TERM...Wesely
LONG TERM...Wesely
AVIATION...Rossi



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