Suppression Forecast
Issued by NWS Riverton, WY

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000
FNUS75 KRIW 201051
FWSRIW

Spot Forecast for Gilbert  Meadows...U.S Forest Service
National Weather Service Riverton WY
351 AM MST Mon Nov 20 2017

Forecast is based on ignition time of 0600 MST on November 20.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...
It will become windy from the southwest today ahead of an approaching
weather system which will cross the state later today into tonight.
There is a slight chance of rain or snow showers, mainly Monday evening,
but any amounts would be light. A ridge of high pressure then builds in
from the southwest Tuesday and remains in control of the regional
weather pattern through much of this week. Conditions will turn
unseasonably warm and dry with less wind Tuesday through Thanksgiving.

...Thunderstorms imply strong gusty and erratic winds...
...Haines index is high level haines both day and night...

FORECASTER...Skrbac/Jones

.MONDAY...

Sky/weather.........Mostly cloudy (75-90 percent).
                    A slight chance of rain and snow showers after 1400L.
Max temperature.....41-44.
Min humidity........20-23 percent.
20-foot winds.......Southwest wind 6 to 10 mph with gusts 15 to 20 mph until
                    1000L...then becoming southwest 17 to 22 mph with gusts to
                    around 35 mph by 1300L.
Ridge top winds.....Southwest 30 to 35 mph.
LAL.................1.
Chc of wetting rain.Less than 5 percent.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Mixing height.......Less than 1000 ft AGL until 1200L...then rising to
                    around 3000 ft AGL by 1400L.
Transport winds.....Southwest 10 to 15 mph until 1000L...then becoming
                    southwest 25 to 35 mph by 1400L.
Smoke dispersal.....Poor until 1200L...then good by 1400L.

.MONDAY NIGHT...

Sky/weather.........Mostly cloudy (70-80 percent) with a slight chance of
                    light snow showers.
Min temperature.....27-30.
Max humidity........87-90 percent.
20-foot winds.......Southwest wind 15 to 20 mph with gusts around 30 mph.
                    Wind decreasing to 10 to 15 mph after 0300L.
Ridge top winds.....Southwest 20 to 30 mph...decreasing to 15 to 20 mph
                    after 0300L.
LAL.................1.
Chc of wetting rain.Less than 5 percent.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.
Mixing height.......Decreasing to less than 1000 ft AGL by 1900L.
Transport winds.....Southwest 25 to 30 mph until 1800L...then becoming
                    15 to 25 mph by 2200L.
Smoke dispersal.....Good until 1800L...then becoming poor by 2000L.

.TUESDAY...

Sky/weather.........Mostly cloudy (70-80 percent).
Max temperature.....44-47.
Min humidity........50-53 percent.
20-foot winds.......West-southwest wind 10 to 15 mph with gusts to
                    around 20 mph. Wind decreasing to around 10 mph
                    between 1500L and 1700L.
Ridge top winds.....West-southwest 15 to 20 mph.
LAL.................1.
Chc of wetting rain.Zero percent.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.
Mixing height.......Less than 1000 ft AGL until 1200L, then rising to
                    around 3000 ft AGL by 1400L.
Transport winds.....West-southwest 15 to 20 mph.
Smoke dispersal.....Poor until 1200L...then fair.

.FORECAST DAYS 3 THROUGH 5...
.TUESDAY NIGHT...
Partly cloudy. Low in the lower 30s. Wind generally less than
10 mph.
.WEDNESDAY...
Partly cloudy and warm. Low in the lower 30s. High in the lower 50s.
Wind generally less than 10 mph.
.THANKSGIVING DAY...
Unseasonably warm. Partly cloudy with a low in the lower 30s.
High in the mid 50s. Wind generally less than 10 mph.
.FRIDAY...
Partly cloudy and cooler. Low in the lower 30s. High in the upper 40s.
Wind generally less than 10 mph.

$$
Forecaster...Skrbac/Jones
Requested by...Maggie Dalene
Type of request...PRESCRIBED
.TAG 1719009.0/RIW
.EMAIL magggiedalene@fs.fed.us



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