272
FNUS75 KSLC 240139
FWSSLC
SPOT FORECAST FOR ETHER HOLLOW
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
739 PM MDT WED SEP 23 2020
...RED FLAG WARNING IN EFFECT FROM NOON UNTIL 9 PM FRIDAY
FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY...
DISCUSSION
HIGH PRESSURE ALOFT CENTERED OVER THE AREA WILL
GIVE WAY TO SOUTHWESTERLY FLOW THURSDAY. AS THIS FLOW MIXES
DOWN DURING THE AFTERNOON TERRAIN DRIVEN WINDS WILL GIVE WAY
TO GUSTY SOUTHWEST WINDS BY MID AFTERNOON, WHICH COUPLED WITH
VERY LOW HUMIDITY WILL RESULT IN CRITICAL FIRE WEATHER CONDITIONS
THURSDAY AFTERNOON THROUGH EARLY EVENING. A WEAK, DRY FRONTAL
BOUNDARY WILL PUSH THROUGH THE AREA THURSDAY NIGHT, WHICH WILL
RESULT IN SLIGHTLY COOLER TEMPERATURES ALONG WITH SLIGHTLY HIGHER
RH VALUES FRIDAY. WINDS FRIDAY SHOULD REMAIN LIGHTER AND FROM
THE WEST DURING THE LATE MORNING AND AFTERNOON.
REST OF TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (5-15 PERCENT CLOUD COVER). HAZE.
CHANCE OF PCPN......0 PERCENT.
CWR.................0 PERCENT.
LAL.................1.
MIN TEMPERATURE.....AROUND 60.
MAX HUMIDITY........28-30%.
WIND (20 FT)........EAST 4-9 MPH.
HAINES INDEX........5 ..MODERATE.
THURSDAY
SKY/WEATHER.........SUNNY (0-10 PERCENT CLOUD COVER). HAZE.
CHANCE OF PCPN......0 PERCENT.
CWR.................0 PERCENT.
LAL.................1.
MAX TEMPERATURE.....AROUND 90.
MIN HUMIDITY........10-12%.
WIND (20 FT)........EAST 3-7 MPH EARLY BECOMING WEST 4-8 MPH AFTER
1000, THEN SOUTHWEST SOUTHWEST 12-18 MPH WITH
GUSTS AROUND 25 MPH AFTER 1400.
IN THE AFTERNOON.
HAINES INDEX........5 ..MODERATE.
THURSDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR (0-10 PERCENT CLOUD COVER).
CHANCE OF PCPN......0 PERCENT.
CWR.................0 PERCENT.
LAL.................1.
MIN TEMPERATURE.....AROUND 60.
MAX HUMIDITY........33-35%.
WIND (20 FT)........SOUTHWEST 10-15 MPH WITH GUSTS TO 25 MPH EARLY
BECOMING EAST 4-9 MPH AFTER 2000.
HAINES INDEX........5 ..MODERATE.
FRIDAY
SKY/WEATHER.........SUNNY (10-20 PERCENT CLOUD COVER).
CHANCE OF PCPN......0 PERCENT.
CWR.................0 PERCENT.
LAL.................1.
MAX TEMPERATURE.....84-86.
MIN HUMIDITY........13-15%.
WIND (20 FT)........SOUTHEAST WINDS 6-9 MPH BECOMING WEST 8-14 MPH
WITH GUSTS TO 20 MPH IN THE AFTERNOON.
HAINES INDEX........4 ..LOW.
FORECASTER...SEAMAN
REQUESTED BY...INCIDENT COMMANDER
TYPE OF REQUEST...WILDFIRE
.TAG 2012934.0/SLC
.DELDT 09/23/20
.FORMATTERVERSION 1.0.26
.EMAIL KEVINFRANK@UTAH.GOV
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