Suppression Forecast
Issued by NWS Spokane, WA

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FNUS76 KOTX 271344
FWSOTX

Spot Forecast for Forest Johnson Unit 7...USFS
National Weather Service Spokane WA
644 AM PDT Thu Apr 27 2017

Forecast is based on ignition time of 0700 PDT on April 27.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...

Pressure gradients will remain tight across the Cascades with breezy
winds over the burn project today. Winds will gradually weaken
Friday into Saturday with a slight warming trend and dry conditions.
Another cold front passage is expected on Sunday with winds becoming
gusty again. Cool and breezy conditions will continue into early
next week. Warming and drying trend into the middle portion of next
week with high pressure building in over the region.

***************************************************************
FORECASTS FOR 20 FOOT WIND SPEEDS (VALLEYS AND RIDGE TOPS) ARE
10 MINUTE AVERAGES REFLECTING RAWS WIND.
***************************************************************

.TODAY...

Sky/weather.........Partly sunny.
CWR.................0 percent.
Max temperature.....54.
Min humidity........30 percent.
Wind (20 ft)........Northwest winds 7 to 11 mph. Gusts up to 20 mph
                    in the afternoon.
Mixing height.......becoming 2500 ft AGL after 1100.
Transport winds.....Northwest 9 to 13 mph.
Haines Index........3 very low.

.TONIGHT...

Sky/weather.........Partly cloudy.
CWR.................0 percent.
Min temperature.....36.
Max humidity........65 percent.
Wind (20 ft)........Northwest winds 7 to 11 mph with gusts up to 20
                    mph in the evening...decreasing to 3 to 5 mph
                    after 2000.
Mixing height.......decreasing to 600 ft AGL after 1900.
Transport winds.....Northwest 4 to 7 mph.
Haines Index........3 very low.

.FRIDAY...

Sky/weather.........Mostly sunny.
CWR.................0 percent.
Max temperature.....57.
Min humidity........30 percent.
Wind (20 ft)........West-southwest winds 5 to 9 mph.
Mixing height.......becoming 2100 ft AGL after noon.
Transport winds.....West 6 to 10 mph.
Haines Index........3 very low.

$$
Forecaster...SVH
Requested by...Ian Morgan
Type of request...PRESCRIBED
.TAG 1707839.0/OTX



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