Suppression Forecast
Issued by NWS Salt Lake City, UT

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FNUS75 KSLC 222223
FWSSLC

Spot Forecast for South Monroe Rx
National Weather Service Salt Lake City UT
423 PM MDT Mon May 22 2017

.DISCUSSION...Strong high pressure aloft currently along the west
coast will expand east across the Great Basin by early Tuesday.
The result for the fire site will be significantly warmer
temperatures and lowering RH values Monday to Tuesday. A storm
system advancing into the Pacific Northwest midweek will bring even
warmer temperatures and maintain fairly low humidities Wednesday.
Winds will also increase out of the west-northwest during the day.
Increasing mid-level moisture could also fuel increasing terrain
based cumulus with a few high based showers or even a thunderstorm.

A cold front advancing south through Utah will remain north of the
site until late Thursday night or early Friday morning. This front
will generate slightly cooler temperatures and slightly higher
humidities Friday. The chance for showers and thunderstorms will
remain low, with little or no chance of wetting rains Friday and
Saturday.

.WEDNESDAY...

Sky/weather.........Partly cloudy (20-30 percent cloud cover).
Chance of pcpn......5 percent.
CWR.................0 percent.
LAL.................1.
Max temperature.....68-70
Min humidity........10-13%.
Wind (20 ft)........Southwest winds 3-6 mph, becoming west-northwest
                    5-8 mph after 1000. Occasional gusts to 12 mph
                    during the afternoon.
Clearing index......900
Haines Index........4 ..low.

.THURSDAY...

Sky/weather.........Partly cloudy (50-60 percent cloud cover).
                    Scattered showers. Isolated thunderstorms
                    possible during the afternoon.
Chance of pcpn......30 percent.
CWR.................5 percent.
LAL.................1 until 1200 then 2.
Max temperature.....62-65
Min humidity........18-20%.
Wind (20 ft)........Southwest 5-9 mph, becoming west-northwest 7-10 mph
                    with occasional gusts to 18 mph after 1100.
Clearing index......1000+
Haines Index........4 ..low.

.OUTLOOK FOR FRIDAY AND SATURDAY...A cold front will stall in vicinity
of the fire site late in the week. Current forecast would put this front
north of the site through Friday afternoon. The front should move into
or a little south of the site Friday night, then remain near the site
Saturday.

Temperatures will continue a downward trend from the midweek highs. High
temperatures in the lower 60s on Friday will lower to upper 50s Saturday.
Humidity trends will be slightly upward Friday to Saturday, with the
magnitude of the change determined by the amount of shower activity
over/near the fire site.

The percentage of cloud cover will likely exceed range between 40 and 60
percent both afternoons. Showers both days will struggle to generate
wetting rains. Isolated thunderstorms are possible.

West winds Friday afternoon will likely become breezy by afternoon ahead of
the cold front. Winds will peak with the frontal passage late Friday night,
then turn northerly by Saturday morning.

$$

$$
Forecaster...Conger
Requested by...Kelly Cornwall
Type of request...PRESCRIBED
.TAG 1709917.0/SLC



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