Suppression Forecast
Issued by NWS Riverton, WY

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FNUS75 KRIW 301006
FWSRIW

Spot Forecast for West Slope Riparian RX...BLM WOD
National Weather Service Riverton WY
406 AM MDT Thu Mar 30 2017

Forecast is based on ignition time of 1200 MDT on March 30.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...An upper level disturbance will move across the area
this morning with rain showers expected to move into the area by 7
am. From a few hundredths to around a tenth of an inch of
precipitation is expected over the burn area with this system. A
wind shift from the north and some drying/clearing will follow
this system around 1030 am. North wind will continue to increase
through the afternoon as low pressure deepens over the Great
Basin. Any rain showers will be more isolated through the
afternoon with downslope flow off the west slopes of Bighorns.
Rain will become more widespread Friday morning as moisture wraps
into area from the deep low pressure system over the Four Corners
area. North wind will remain quite strong from Friday morning
through the afternoon with winds and precipitation diminishing
Friday night.

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

FORECASTER...Meunier

.TODAY...

Sky/weather.........Cloudy (80-100 percent) with scattered rain showers from 7 am until around 1030 am.
                    Becoming partly cloudy (40-50 percent) in the late morning and afternoon with isolated
                    rain showers.
Max temperature.....56-59.
Min humidity........27-30 percent.
20-foot winds.......Southeast 5 to 10 mph with gusts to 15 mph through 10 am.  Becoming north 5 to 10 mph between
                    10 am and noon and then increasing to 10 to 12 mph with gusts 15 to 20 mph between 3 pm and 6 pm.
Ridge top winds.....South 10 to 15 mph, shifting to the north 10 to 15 mph around noon.
LAL.................No Tstms.
Chc of wetting rain.20 percent.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.
Mixing height.......3100 ft AGL until 1200, then 6000 ft AGL.
Transport winds.....South 10 to 15 mph in the morning. Northwest 5 to 10 mph in the afternoon.
Smoke dispersal.....Fair.

.TONIGHT...

Sky/weather.........Cloudy (80-90 percent). Scattered rain showers through midnight, then rain likely after 3 am.
Min temperature.....44-47.
Max humidity........77-80 percent.
20-foot winds.......North to Northeast winds 10 to 20 mph with gusts to
                    around 30 mph increasing to 20 to 25 mph with
                    gusts to around 40 mph early in the morning.
Ridge top winds.....North 15 to 20 mph increasing to northeast 25
                    to 30 mph after midnight.
LAL.................No Tstms.
Chc of wetting rain.30 percent.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.
Mixing height.......3900 ft AGL until 2400, then 1400 ft AGL.
Transport winds.....North 15 to 25 mph increasing to northeast around 30
                    mph after midnight.
Smoke dispersal.....Good to excellent.

.FRIDAY...

Sky/weather.........Cloudy (80-90 percent). Rain likely in the
                    morning, then chance of rain in the afternoon.
Max temperature.....44-47.
Min humidity........61-64 percent.
20-foot winds.......Northeast winds 20 to 25 mph with gusts to
                    around 40 mph.
Ridge top winds.....Northeast around 30 mph.
LAL.................No Tstms.
Chc of wetting rain.40 percent.
Haines Index........2 or very low potential for large plume
                    dominated fire growth.
Mixing height.......1600-2100 ft AGL.
Transport winds.....Northeast around 35 mph.
Smoke dispersal.....Good to excellent.

.FORECAST DAYS 3 THROUGH 5...

.FRIDAY NIGHT...
Colder, cloudy. Chance of rain in the evening. Lows in the mid
30s. Northeast winds around 15 mph.

.SATURDAY...
Partly cloudy. Lows in the mid 30s. Highs in the lower 50s. Winds
generally less than 10 mph.

.SUNDAY...
Mostly cloudy. Slight chance of showers. Lows in the upper 30s.
Highs in the mid 50s. Winds generally less than 10 mph.

.MONDAY...
Cloudy with showers likely and chance of snow showers. Lows
around 40. Highs in the upper 40s. North winds around 11 mph.

$$
Forecaster...Meunier
Requested by...Tim Haas
Type of request...PRESCRIBED
.TAG 1705387.1/RIW
.EMAIL tjhaas@blm.gov



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