Suppression Forecast
Issued by NWS Eureka, CA

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320
FNUS76 KEKA 220229
FWSEKA

Spot Forecast for SHF-1770 Helena Fire...USFS
National Weather Service Eureka CA
729 PM PDT Sat Oct 21 2017

If conditions become unrepresentative...contact the National Weather
Service.

Please contact our office at (707) 443-6484, if you have questions
or concerns with this forecast.

.DISCUSSION...A warming and drying trend can be expected over the
next couple of days, with the return of breezy ridgetop
northeasterly winds Sunday night and beyond. Temperatures Sunday
will be approximately 10 to 15 degrees warmer than Saturday, and
Monday will be another 10 degrees warmer yet. Humidity will
steadily lower as well, both in terms of afternoon minimums and
overnight recoveries. Winds are expected to be generally light
across most of the fire area, although they will turn to the
northeast overnight Sunday and remain that way through Monday
night. Some stronger gusts will be possible in the highest and
most exposed elevations.

.SUNDAY...

Sky/weather.........Partly cloudy.
CWR.................0 percent.
LAL.................1.
Max temperature.....Valleys: 66 to 71
                    Mid Slopes: 61 to 66
                    Ridges: 56 to 61
Min humidity........35 to 50 percent. Lowest in valleys.
Wind (20 ft)........West winds 5 to 8 mph.
Mixing height.......500 to 1900 ft AGL.
Transport winds.....West around 12 mph.

.SUNDAY NIGHT...

Sky/weather.........Mostly clear.
CWR.................0 percent.
LAL.................1.
Min temperature.....44 to 49.
Max humidity........Valleys: 80 to 90 percent
                    Ridges: 50 to 65 percent.
Wind (20 ft)........Northeast 4 to 8 mph. Gusts to 12 mph on exposed ridges.
Mixing height.......300-1300 ft AGL.
Transport winds.....North around 12 mph.

.MONDAY...

Sky/weather.........Sunny.
CWR.................0 percent.
LAL.................1.
Max temperature.....Valleys: 78 to 83
                    Mid Slopes: 73 to 78
                    Ridges: 68 to 63
Min humidity........24 to 32 percent.
Wind (20 ft)........Northeast winds around 5 mph...shifting to the east
                    5 to 9 mph in the afternoon.
Mixing height.......3000 ft AGL.
Transport winds.....Northeast around 9 mph.

.MONDAY NIGHT...

Sky/weather.........Mostly clear.
CWR.................0 percent.
LAL.................1.
Min temperature.....48 to 56.  Warmest on mid slopes.
Max humidity........Valleys: 70 to 80 percent.
                    Mid slopes: 55 to 70 percent.
                    Ridges: 40 to 55 percent.
Wind (20 ft)........Northeast winds 3 to 9 mph. Gusts to 15 mph on exposed ridges.
Mixing height.......300-1300 ft AGL.
Transport winds.....Northeast around 20 mph.

$$
Forecaster...Charboneau
Requested by...Bryan Agbalog
Type of request...WILDFIRE
.TAG 1717096.11/EKA
.EMAIL bryanagbalog@fs.fed.us



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