Area Forecast Discussion
Issued by NWS Cheyenne, WY

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000
FXUS65 KCYS 152325
AFDCYS

Area Forecast Discussion
National Weather Service Cheyenne WY
525 PM MDT Thu Jun 15 2017

.SHORT TERM...(This evening through Saturday night)
Issued at 300 PM MDT Thu Jun 15 2017

Warm and dry conditions will persist over the CWA through Friday
with varying amounts of high cloudiness in a somewhat moist
westerly flow aloft. An approaching shortwave will induce pressure
falls over the high plains. A steepening pressure gradient will
lead to rather windy conditions over western areas, with some gusts
over 50 mph possible in wind prone locations. The shortwave will
pass across the region Friday night into Saturday with an associated
cool front dropping across the CWA late Friday night and Saturday
morning. Widely scattered showers should move into northwestern
parts of the CWA Friday night and then across much of the rest of
the CWA Saturday before ending. Severe storms are not anticipated.
Max temperatures look to be about 10-15 degrees cooler over the
plains Saturday, and be on the cool side Saturday night with most
lower elevation areas lowering into the 40s.

.LONG TERM...(Sunday through Thursday)
Issued at 300 PM MDT Thu Jun 15 2017

General agreement with 12Z medium range models and ensembles progging
the western CONUS upper ridge to flatten by the end of the long term
as a series of upper level disturbances track across the northern
CONUS. Consequently, the northwesterly flow aloft early in the week
will become westerly by Thursday. With the faster westerlies confined
north of the CWA, opportunities for measurable precipitation will be
minimal. The models continue to depict light QPF from the eastern
CO plain into western NE Wednesday with the passage of a Pacific
front and upper disturbance. It will be breezy most afternoons, mainly
along and west of the Laramie Range. Temperatures warm from the 70s
Sunday, to the 80s to mid 90s Tuesday and Wednesday. It will be 5-10
degrees cooler Thursday following the fropa.

&&

.AVIATION...(For the 00Z TAFS through 00Z Friday evening)
Issued at 521 PM MDT Thu Jun 15 2017

Wyoming TAFS...VFR. Scattered to broken clouds from 11000 to 15000
feet AGL. Wind gusts to 33 knots through 03Z, then wind gusts to
40 knots after 15Z Friday.

Nebraska TAFS...VFR. Scattered to broken clouds from 8000 to 15000
feet AGL. Wind gusts to 20 knots through 02Z, then wind gusts to
28 knots after 15Z Friday.

&&

.FIRE WEATHER...
Issued at 300 PM MDT Thu Jun 15 2017

Non-critical fuel conditions will keep fire weather concerns low
through the weekend. Dry weather is expected to prevail through the
weekend. There should be some isolated showers and storms pass across
the area Friday night through Saturday in association with a cool
front, which will bring some cooler temperatures for Saturday and
Sunday. It will be pretty windy over western districts much of the
time Friday through Saturday.

&&

.CYS WATCHES/WARNINGS/ADVISORIES...
WY...None.
NE...None.
&&

$$

SHORT TERM...RE
LONG TERM...MAJ
AVIATION...RUBIN
FIRE WEATHER...RE



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