Area Forecast Discussion
Issued by NWS Cheyenne, WY

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FXUS65 KCYS 162345

Area Forecast Discussion
National Weather Service Cheyenne WY
545 PM MDT Fri Mar 16 2018

.SHORT TERM...(This afternoon through Sunday)
Issued at 145 PM MDT Fri Mar 16 2018

The storm system, which brought heavy snow to portions of the
area, is coming to an end with light to moderate snowfall still
being observed across mainly the northern Nebraska panhandle early
this afternoon. Most of the snow has ended across southeast
Wyoming, so let those Winter Weather Advisories expire on time.
Will likely let the remain warnings/advisories for the northern
panhandle and Niobrara county expire at 300 pm. Temperatures have
struggled to moderate this afternoon, so lowered temperatures
tonight by a few degrees, especially in the areas with the most
snow cover and where clear skies are expected. Strong wind gusts
are currently being observed across the Elk Mountain and Arlington
areas with gusts generally between 50 to 55 MPH. Expect these
winds to peak shortly and then gradually diminish through the rest
of the afternoon and tonight, so will not issue any High Wind
Headlines at this time. Patchy fog is expected across the Laramie
Valley and across the eastern plains of far eastern Wyoming and
western nebraska due to a saturated BL and good radiational
cooling tonight.

For this weekend, warmer temperatures are forecast on Saturday as
upper level flow becomes more southwesterly. With mostly sunny
skies, expect temperatures in the upper 40`s to upper 50`s. Areas
with a solid snowpack may remain in the low to mid 40`s though.
Models show the next Pacific storm system moving across the Great
Basin region Saturday afternoon. This storm is trending further
south compared to the yesterdays/this mornings storm, but will
still need to be watched since accumulating snowfall looks likely
along portions of the I-80 corridor and the western Nebraska
panhandle. With upslope flow, frontogenesis, and some llvl
convergence, Periods of light to moderate snow are possible Sunday
afternoon through Sunday night. Continued to increase POP, but do
not expect major impacts at this time due to snow and/or wind.

.LONG TERM...(Sunday night through Thursday)
Issued at 322 AM MDT Fri Mar 16 2018

Looks like there should be some fairly widespread snow across much
of the CWA Sunday night as the upper low moves east from Colorado
across the OK/KS border area. Pcpn ending during the day Monday
but a chilly day with a cool sfc high settling over the region.
Mainly dry and warming up in the Tuesday through Thursday time
period as upper ridging amplifies and moves across the region. A
few showers possible out west by late Thursday ahead of the next
upper trough that will move onshore along the Pacific coast.


.AVIATION...(For the 00Z TAFS through 00Z Saturday afternoon)
Issued at 545 PM MDT Fri Mar 16 2018

MVFR CIGS will persist through late evening across the northern
Nebraska Panhandle including KCDR. Expect some late night and early
morning fog due to moisture from recent snowfall combined with light
winds. Preferred areas include the Laramie Valley (KLAR), Platte
River Valley (KBFF), and KAIA. The fog should lift by 15Z. KRWL,
KCYS, KSNY and KCDR can expect VFR. Winds will shift to southerly
after 15Z, and become breezy at times.


Issued at 109 PM MDT Fri Mar 16 2018

No Fire Weather concerns through the weekend and into next week
with high relatively humidities and another chance for rain and
snow Sunday and Sunday night.






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