Red Flag Warning 12, NWS Salt Lake City, UT

334 
WWUS85 KSLC 090419
RFWSLC

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1019 PM MDT MON AUG 8 2016

UTZ478-492-091200-
/O.CON.KSLC.FW.W.0012.160809T1800Z-160810T0300Z/
SALT LAKE DESERT-CENTRAL UTAH WEST DESERT-
1019 PM MDT MON AUG 8 2016

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TO 9 PM MDT
TUESDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES
478 AND 492...

* AFFECTED AREA...FIRE WEATHER ZONE 478 SALT LAKE DESERT AND 
  FIRE WEATHER ZONE 492 CENTRAL UTAH WEST DESERT.

* WINDS...SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS OVER 30 MPH 
  ARE EXPECTED TO DEVELOP TUESDAY AFTERNOON AND CONTINUE INTO 
  TUESDAY EVENING.

* RELATIVE HUMIDITY...MINIMUM RELATIVE HUMIDITIES IN THE 8 TO 15 
  PERCENT RANGE WILL EXIST TUESDAY AFTERNOON AND EARLY EVENING.

* IMPACTS...GUSTY WINDS AND LOW RELATIVE HUMIDITY WILL CREATE 
  HAZARDOUS FIRE WEATHER CONDITIONS DURING THE AFTERNOON AND 
  EVENING HOURS TUESDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF
STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN
CONTRIBUTE TO EXTREME FIRE BEHAVIOR.

&&

$$

FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)

717 
WWUS85 KSLC 090901
RFWSLC

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
301 AM MDT TUE AUG 9 2016

UTZ479-092300-
/O.EXA.KSLC.FW.W.0012.160809T1800Z-160810T0300Z/
WASATCH MOUNTAINS-
301 AM MDT TUE AUG 9 2016

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS
EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE
479...

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A RED
FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN
EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING.

* AFFECTED AREA...FIRE WEATHER ZONE 479 WASATCH MOUNTAINS.

* WINDS...SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS OVER 30 MPH ARE
  EXPECTED TO DEVELOP THIS AFTERNOON AND CONTINUE INTO THIS
  EVENING BEFORE DIMINISHING.

* RELATIVE HUMIDITY...MINIMUM RELATIVE HUMIDITIES IN THE 8 TO 15
  PERCENT RANGE WILL EXIST THIS AFTERNOON AND EARLY EVENING.

* IMPACTS...GUSTY WINDS AND LOW RELATIVE HUMIDITY WILL CREATE
  HAZARDOUS FIRE WEATHER CONDITIONS DURING THE AFTERNOON AND
  EVENING HOURS TODAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF
STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN
CONTRIBUTE TO EXTREME FIRE BEHAVIOR.

&&

$$

UTZ478-492-092300-
/O.CON.KSLC.FW.W.0012.160809T1800Z-160810T0300Z/
SALT LAKE DESERT-CENTRAL UTAH WEST DESERT-
301 AM MDT TUE AUG 9 2016

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT
THIS EVENING FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER
ZONES 478 AND 492...

* AFFECTED AREA...FIRE WEATHER ZONE 478 SALT LAKE DESERT AND 
  FIRE WEATHER ZONE 492 CENTRAL UTAH WEST DESERT.

* WINDS...SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS OVER 30 MPH ARE
  EXPECTED TO DEVELOP THIS AFTERNOON AND CONTINUE INTO THIS
  EVENING BEFORE DIMINISHING.

* RELATIVE HUMIDITY...MINIMUM RELATIVE HUMIDITIES IN THE 8 TO 15
  PERCENT RANGE WILL EXIST THIS AFTERNOON AND EARLY EVENING.

* IMPACTS...GUSTY WINDS AND LOW RELATIVE HUMIDITY WILL CREATE
  HAZARDOUS FIRE WEATHER CONDITIONS DURING THE AFTERNOON AND
  EVENING HOURS TODAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF
STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN
CONTRIBUTE TO EXTREME FIRE BEHAVIOR.

&&

$$

FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)

182 
WWUS85 KSLC 092059
RFWSLC

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
259 PM MDT TUE AUG 9 2016

UTZ478-479-492-101200-
/O.NEW.KSLC.FW.A.0008.160810T2100Z-160811T0900Z/
/O.CON.KSLC.FW.W.0012.000000T0000Z-160810T0300Z/
SALT LAKE DESERT-WASATCH MOUNTAINS-CENTRAL UTAH WEST DESERT-
259 PM MDT TUE AUG 9 2016

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING 
FOR WIND AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES
478...479 AND 492... 

...FIRE WEATHER WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH
LATE WEDNESDAY NIGHT FOR DRY THUNDERSTORMS AND GUSTY OUTFLOW WINDS
FOR FIRE WEATHER ZONES 478...479 AND 492...

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS CONTINUED THE
RED FLAG WARNING FOR WIND AND LOW RELATIVE HUMIDITY...WHICH IS IN
EFFECT UNTIL 9 PM MDT THIS EVENING.

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A FIRE
WEATHER WATCH FOR DRY THUNDERSTORMS AND GUSTY OUTFLOW WINDS...
WHICH IS IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH LATE
WEDNESDAY NIGHT.

* AFFECTED AREA...FIRE WEATHER ZONE 478 SALT LAKE DESERT...FIRE 
  WEATHER ZONE 479 WASATCH MOUNTAINS AND FIRE WEATHER ZONE 492 
  CENTRAL UTAH WEST DESERT.

* WINDS...SOUTHWEST WINDS 15 TO 25 MPH WITH GUSTS OVER 30 MPH ARE
  EXPECTED TO CONTINUE INTO THIS EVENING BEFORE DIMINISHING.

* RELATIVE HUMIDITY...MINIMUM RELATIVE HUMIDITIES IN THE 8 TO 15
  PERCENT RANGE WILL CONTINUE INTO EARLY EVENING.

* IMPACTS...GUSTY WINDS AND LOW RELATIVE HUMIDITY WILL CREATE
  HAZARDOUS FIRE WEATHER CONDITIONS INTO THE EVENING HOURS TODAY.

* THUNDERSTORMS...ISOLATED TO SCATTERED DRY THUNDERSTORMS ARE
  EXPECTED LATE WEDNESDAY AFTERNOON THROUGH MIDNIGHT.

* OUTFLOW WINDS...GUSTS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
  THE STRONGEST STORMS ON WEDNESDAY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF
STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES CAN
CONTRIBUTE TO EXTREME FIRE BEHAVIOR.

A FIRE WEATHER WATCH MEANS THAT THERE IS A POTENTIAL FOR CRITICAL
FIRE WEATHER CONDITIONS. CONTINUE TO MONITOR FOR THE LATEST
FORECASTS AND FOR POSSIBLE RED FLAG WARNINGS.

&&

$$

FOR MORE INFORMATION FROM NOAA/NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY (ALL LOWER CASE)

Area Forecast Discussion
National Weather Service Salt Lake City UT
1042 AM MDT MON AUG 8 2016

.SYNOPSIS...An increasingly strong southwest flow aloft will usher
in significantly drier from Nevada early this week. Monsoonal
moisture is expected to return to Utah midweek.

&&

.SHORT TERM (Through Tonight)...
Water vapor satellite imagery this morning shows a cyclonic flow
over the Pacific NW associated with a longwave trough moving
inland, and a very dry airstream moving through the Desert SW into
southern Utah. Between those two features, southwest flow aloft is
advecting a few high clouds through the northern Great Basin,
associated with a weak upper-level jet on the southern end of the
trough. At the surface, early-morning convection has pushed east
of our forecast area into far eastern Utah and Colorado, with
nearly clear skies save for a few high clouds clipping the
northern edge of Utah. Dewpoints have finally begun to trend
downward across the state, especially closer to the Nevada border,
as drier southwest flow works into the region. The SLC morning
show much drier conditions, with PWATs now closer to a half inch.
GOES PWATs agree, showing less than a half inch PWAT over the
western half of UT, while some >1" readings linger over the
southeast corner of the state.

With less moisture and no discernible upper-level trigger (the
meager upper-level jet dynamics are progged to remain to our
north and west), expecting a much quieter day convection-wise
across the forecast area. Cannot rule out some buildups over the
higher terrain from the Uintas into UT's central mountains, but
am not expecting anything of significance. Otherwise, a hot and
dry day is in store for the area. Current forecast has a good
handle on this, so no updates planned.

.PREVIOUS DISCUSSION...issued 400AM MDT...

The upper low is forecast to slowly move inland and make its way
through the interior Pacific Northwest/Northern Rockies over the
next couple of days, while the trailing upper trough axis remains
upstream across the Great Basin. This will maintain a mean
southwesterly flow across the forecast area through Wednesday. The
surface boundary currently located across northern Utah is
forecast to largely mix out by Tuesday afternoon allowing for a
slight warming trend across the north along with an increase in
southerly winds. Moisture residing south of the area across AZ is
forecast to slowly be pulled northward late Tuesday through
Wednesday resulting in a gradual increase in
showers/thunderstorms. Better moisture across the south will
result in better coverage and more of a heavy rain threat by
Wednesday, while a deeper/drier sub cloud layer across the north
will keep storms more high based with a threat for gusty winds.

.LONG TERM (After 06z Thursday)... The broad trough continues to
make its way through the forecast area on Thursday. By Thursday
morning, the flow aloft over much of the forecast area shifts to
the west, allowing drier air to move back in. However, a moist
airmass remains over eastern Utah through Thursday afternoon and
the trough will provide a fair amount of instability, so showers
and thunderstorms are still possible through the early evening.
Much cooler temperatures are expected for Thursday, with maxes
running up to 10F below seasonal normals.

Behind the exiting trough, strong high pressure moves back in
beginning Friday. This will allow for a quick warming trend in
temperatures with dry conditions and light winds. Latest GFS hints
at moisture returning to southeast Utah as southerly flow
increases ahead of another Pacific Northwest trough on Monday.
However, 00Z ECMWF keeps this system well to the north, allowing a
dry westerly flow to remain. Have introduced some isolated POPs to
account for the GFS solution.

&&

.AVIATION... Light south to southeast winds at the SLC terminal will
likely shift to the north/northwest around 17-18Z. There is a 20
percent chance that winds will remain southerly...if this occurs
winds could become gusty in the early afternoon. VFR conditions
are expected to prevail at the terminal through the TAF period.

&&

.SLC Watches/Warnings/Advisories...
UT...Fire Weather Watch from Tuesday afternoon through Tuesday
     evening for UTZ478.

WY...&&

SHORT TERM...Van Cleave
AVIATION...Carr

For more information from NOAA's National Weather Service visit...
http://weather.gov/saltlakecity

For frequently asked questions about the Area Forecast Discussion
visit...
http://weather.gov/saltlakecity/general/afd_faqs.php

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
406 AM MDT MON AUG 8 2016

UTZ001>016-019>021-517-518-WYZ021-091200-
CACHE VALLEY/UTAH PORTION-NORTHERN WASATCH FRONT-
SALT LAKE AND TOOELE VALLEYS-SOUTHERN WASATCH FRONT-
GREAT SALT LAKE DESERT AND MOUNTAINS-WASATCH MOUNTAIN VALLEYS-
WASATCH MOUNTAINS I-80 NORTH-WASATCH MOUNTAINS SOUTH OF I-80-
WESTERN UINTA MOUNTAINS-WASATCH PLATEAU/BOOK CLIFFS-
WESTERN UINTA BASIN-CASTLE COUNTRY-SAN RAFAEL SWELL-
SANPETE/SEVIER VALLEYS-WEST CENTRAL UTAH-SOUTHWEST UTAH-
UTAHS DIXIE AND ZION NATIONAL PARK-SOUTH CENTRAL UTAH-
GLEN CANYON RECREATION AREA/LAKE POWELL-CENTRAL MOUNTAINS-
SOUTHERN MOUNTAINS-SOUTHWEST WYOMING-
406 AM MDT MON AUG 8 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN TWO THIRDS OF
UTAH AND SOUTHWEST WYOMING.

.DAY ONE...TODAY AND TONIGHT

ISOLATED MOUNTAIN THUNDERSTORMS WILL BE POSSIBLE FROM THE UINTAS
SOUTH THROUGH THE WASATCH PLATEAU AND INTO THE CENTRAL MOUNTAINS
THIS AFTERNOON.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

CRITICAL FIRE WEATHER CONDITIONS ARE POSSIBLE TUESDAY ACROSS
NORTHWEST UTAH DUE TO THE COMBINATION OF GUSTY WINDS...LOW
HUMIDITY AND CRITICALLY DRY FUELS.

MOISTURE IS EXPECTED TO SPREAD NORTH ACROSS THE OUTLOOK AREA LATE
TUESDAY THROUGH WEDNESDAY BRINGING THE NEXT THREAT FOR SHOWERS AND
THUNDERSTORMS. LOCALLY HEAVY RAINFALL WILL BE POSSIBLE WEDNESDAY
MAINLY ACROSS SOUTHERN UTAH ON WEDNESDAY. A DRYING AND COOLING
TREND IS EXPECTED FOR THE LATTER PORTION OF THE WEEK.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

FOR MORE INFORMATION FROM NOAA/S NATIONAL WEATHER SERVICE VISIT...
HTTP://WEATHER.GOV/SALTLAKECITY/ (ALL LOWER CASE)

FOR INFORMATION ON POTENTIAL ROAD TRAVEL IMPACTS VISIT...
HTTP://WWW.UDOTTRAFFIC.UTAH.GOV/ROADWEATHERFORECAST.ASPX