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Area forecast discussion
National Weather Service Cheyenne Wyoming
917 PM MDT Sat Aug 24 2019

Update...
issued at 802 PM MDT Sat Aug 24 2019

Dropped today's red flag warning for most of Carbon County slightly
early this evening as humidities crept up and gusty winds
diminished. Will see dry and windy conditions set in again tomorrow
with gusts 35 to 45 mph west pf the Laramie range, and 25 to 35 mph
east. Updated the fire weather grids to maintain consistent windy
conditions Sunday afternoon, as well as heighten Haines index values
with increasing concern for plume dominated fire growth tomorrow
should any fires get started.

&&

Short term...(this evening through sunday)
issued at 139 PM MDT Sat Aug 24 2019

Dry and quiet today as yesterday's trough moves east and an upper
level ridge begins to build in behind it. Relative humidity
between 10 and 15 percent combined with winds gusting between 25
to 30 miles per hour is leading to critical fire weather concerns today. A
few sites have already hit criteria. This dry and windy pattern
will expand to include fire weather zones 309 and 310 tomorrow.
Winds in our western fire weather zones could gust upwards up 45
miles per hour. There are two ongoing wildfires in fire weather zones 303 and
305 (dudley fire and Canyon Creek fire) that are included in the
red flag warning today and tomorrow.

Other than our fire weather headlines, conditions will be quiet. A
few rain showers are possible Sunday night into Monday as an upper
level shortwave digs south into the northern Continental U.S.. severe weather
is not expected as overall forcing will be weak.

Long term...(sunday night through saturday)
issued at 139 PM MDT Sat Aug 24 2019

Once the ridge builds in conditions will remain dry and quiet
through the long-term. This will pose more concerns for potential
critical fire weather conditions through the week. The strong
ridge will stay in place keeping the weather uneventful. Long
range models are picking up on a deep trough moving in next
weekend. This system will be our next chance for rain and
thunderstorms. Until then plenty of sunshine, dry air, and Wyoming
wind.

&&

Aviation...(for the 06z tafs through 06z Sunday night)
issued at 915 PM MDT Sat Aug 24 2019

VFR. Wind gusts from 33 to 40 knots for Wyoming terminals from 15z
to 01z, and from 20 to 25 knots for Nebraska terminals for the
same time period.

&&

Fire weather...
issued at 139 PM MDT Sat Aug 24 2019

Critical fire weather conditions are at play this weekend. Gusty
winds between 35 and 45 miles per hour are expected with relative
humidity values between 10 and 15 percent. Rain and thunderstorm
chances are low along with low confidence for wetting rain.
Conditions look to remain dry through the week posing additional
fire weather concerns. The next chance for decent precipitation will
not be until next weekend.

&&

Cys watches/warnings/advisories...
Wyoming...red flag warning from 11 am to 9 PM MDT Sunday for wyz303>305-
309-310.

NE...none.
&&

$$

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