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Suppression Forecast
Issued by NWS Salt Lake City, UT

000
FNUS75 KSLC 241022
FWSSLC

SPOT FORECAST FOR GRASSY TRAIL
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
422 AM MDT FRI MAY 24 2013

.DISCUSSION...A DRY SOUTHWEST FLOW ALOFT WILL BE THE DOMINANT
WEATHER MAKER THROUGH THE WEEKEND AT THE GRASSY TRAIL
WILDFIRE SITE. DAYTIME HUMIDITY IS EXPECTED TO FALL INTO
THE SINGLE DIGITS AGAIN THIS AFTERNOON WITH GUSTY
SOUTHWESTERLY ORIENTED WINDS RAMPING UP FROM CURRENT LEVELS.
THIS SAID...PEAK WIND SPEEDS SHOULD NOT REACH YESTERDAYS
LEVELS THOUGH SOME GUSTS SHOULD MAKE IT INTO THE UPPER 20 MPH
RANGE AFTER 14/1500. OVERNIGHT RH RECOVERY WILL REMAIN MARGINAL
BUT WIND SPEEDS ARE EXPECTED TO DROP WITH DIRECTION BECOMING
DOMINATED BY DOWNSLOPE TERRAIN FLOWS. SIMILAR CONDITIONS WILL
OCCUR AGAIN ON SATURDAY BUT WINDS DO LOOK TO BE A BIT
STRONGER THAN WHAT YOU CAN EXPECT TODAY.

BOTTOM LINE...BONE DRY AND GUSTY DURING THE DAYTIME PERIODS.

.TODAY...
  LAL.................1.
  HAINES INDEX........6 ..HIGH.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....61-65.
  MIN HUMIDITY........9-13 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST WINDS 10 TO 20 MPH BECOMING
                      INCREASINGLY GUSTY THIS AFTERNOON WITH
                      GUSTS TO 25 TO 30 MPH AFTER 1400.

.TONIGHT...
  LAL.................1.
  HAINES INDEX........5 ..MODERATE.
  SKY/WEATHER.........MOSTLY CLEAR (20-30 PERCENT CLOUD COVER).
  MIN TEMPERATURE.....39-42.
  MAX HUMIDITY........29-33PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST WINDS 10 TO 15 MPH SHIFTING TO THE
                      NORTHWEST 5 TO 15 MPH AFTER 21/2200 THEN
                      BECOMING NORTHEAST 5 TO 8 MPH AFTER 0300

.OUTLOOK FOR SATURDAY...
  LAL.................1.
  HAINES INDEX........6 ..HIGH.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........MOSTLY SUNNY (15-25 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....65-67.
  MIN HUMIDITY........11-13 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST WINDS 5 MPH INCREASING TO 15 TO 20
                      MPH WITH GUSTS TO 30 TO 35 MPH IN THE
                      AFTERNOON.



FORECASTER...MERRILL
REQUESTED BY...JUSTIN NEEDLES
REASON FOR REQUEST...WILDFIRE
.TAG 20130523.GRASS.01/SLC

$$