Red Flag Warning 50, NWS Salt Lake City, UT

000 
WWUS85 KSLC 190543
RFWSLC

RED FLAG WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1143 PM MDT MON SEP 18 2006

UTZ420-434-435-437-439-191200-
/O.CON.KSLC.FW.W.0050.060919T1900Z-060920T0300Z/
GREAT SALT LAKE DESERT AND MOUNTAINS-
WEST CENTRAL DESERTS AND MOUNTAINS-
SOUTHWEST DESERTS AND MOUNTAINS-
SOUTHWEST AND SOUTH CENTRAL MOUNTAINS-UTAHS DIXIE AND ZION CANYON-
1143 PM MDT MON SEP 18 2006

...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM TO 9 PM MDT
TUESDAY FOR STRONG AND GUSTY WINDS COMBINED WITH LOW RELATIVE
HUMIDITY FOR WESTERN UTAH FIRE WEATHER ZONES 420-434-435-437
AND 439...

A RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM TO 9 PM MDT
TUESDAY FOR STRONG AND GUSTY WINDS COMBINED WITH LOW RELATIVE
HUMIDITY FOR WESTERN UTAH FIRE WEATHER ZONES 420-434-435-437
AND 439. 

SOUTH WINDS WILL DEVELOP AND INCREASE TO SPEEDS OF 15-25 MPH WITH
GUSTS TO 35 MPH DURING TUESDAY AFTERNOON ACROSS MUCH OF WESTERN
UTAH. THE WIND WILL CONTINUE INTO TUESDAY EVENING AHEAD OF A COLD
FRONT. THESE WINDS ARE FORECAST TO COMBINE WITH RELATIVE
HUMIDITIES DROPPING BELOW 15 PERCENT AND WILL RESULT IN SEVERE
FIRE WEATHER CONDITIONS IN THE WARNING AREA.

A COLD FRONT WILL SWEEP THROUGH UTAH LATE TUESDAY NIGHT AND
WEDNESDAY. BEHIND THE FRONT...WINDS WILL SHIFT TO NORTHWEST AND
REMAIN GUSTY...BUT WITH MODERATING HUMIDITIES IN ALL BUT EXTREME
SOUTHERN UTAH.

A RED FLAG WARNING MEANS THAT SEVERE FIRE WEATHER CONDITIONS ARE
EITHER OCCURRING NOW...OR WILL SHORTLY.

$$

000 
WWUS85 KSLC 191008
RFWSLC

RED FLAG WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
408 AM MDT TUE SEP 19 2006

UTZ420-434-435-437-439-192100-
/O.CON.KSLC.FW.W.0050.060919T1900Z-060920T0300Z/
GREAT SALT LAKE DESERT AND MOUNTAINS-
WEST CENTRAL DESERTS AND MOUNTAINS-
SOUTHWEST DESERTS AND MOUNTAINS-
SOUTHWEST AND SOUTH CENTRAL MOUNTAINS-UTAHS DIXIE AND ZION CANYON-
408 AM MDT TUE SEP 19 2006

...RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO
9 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY 
FOR THE WESTERN UTAH DESERTS AND MOUNTAINS. THIS WARNING INCLUDES
FIRE WEATHER ZONES 420 434 435 437 AND 439...

A RED FLAG WARNING REMAINS IN EFFECT FROM 1 PM THIS AFTERNOON TO
9 PM MDT THIS EVENING. 

SOUTH WINDS OF 15-25 MPH WITH GUSTS TO 35 MPH WILL DEVELOP THIS
AFTERNOON ACROSS MUCH OF WESTERN UTAH. THE WIND WILL CONTINUE INTO
TUESDAY EVENING AHEAD OF A COLD FRONT. THESE WINDS ARE FORECAST TO
COMBINE WITH RELATIVE HUMIDITIES DROPPING BELOW 15 PERCENT AND
WILL RESULT IN SEVERE FIRE WEATHER CONDITIONS IN THE WARNING AREA.

A COLD FRONT WILL SWEEP THROUGH UTAH LATE TUESDAY NIGHT AND
WEDNESDAY. BEHIND THE FRONT...WINDS WILL SHIFT TO NORTHWEST AND
REMAIN GUSTY...BUT WITH MODERATING HUMIDITIES IN ALL BUT EXTREME
SOUTHERN UTAH.

A RED FLAG WARNING MEANS THAT SEVERE FIRE WEATHER CONDITIONS ARE
EITHER OCCURRING NOW...OR WILL SHORTLY.

$$

BRENCHLEY

000 
WWUS85 KSLC 200307
RFWSLC

RED FLAG WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
907 PM MDT TUE SEP 19 2006

UTZ420-433>437-439-200415-
/O.EXP.KSLC.FW.W.0050.000000T0000Z-060920T0300Z/
GREAT SALT LAKE DESERT AND MOUNTAINS-SANPETE AND SEVIER VALLEYS-
WEST CENTRAL DESERTS AND MOUNTAINS-
SOUTHWEST DESERTS AND MOUNTAINS-CENTRAL UTAH MOUNTAINS-
SOUTHWEST AND SOUTH CENTRAL MOUNTAINS-UTAHS DIXIE AND ZION CANYON-
907 PM MDT TUE SEP 19 2006

...RED FLAG WARNING HAS EXPIRED...

THE RED FLAG WARNING IS NO LONGER IN EFFECT. 

SOUTH WINDS OF 10-20 MPH WITH GUSTS AROUND 25 MPH CONTINUE OVER
THE WARNING AREA SOUTH OF I-80. RELATIVE HUMIDITY IS CLIMBING
ABOVE 15 PERCENT.

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1036 AM MDT MON SEP 18 2006

.SYNOPSIS...HIGH PRESSURE WILL RETURN TO THE AREA TODAY THEN
SHIFT EAST TUESDAY. THE NEXT COLD PACIFIC STORM SYSTEM WILL SEND
A COLD FRONT THROUGH UTAH TUESDAY NIGHT AND WEDNESDAY.

&&

.DISCUSSION...MOSTLY CLEAR SKIES AND WARMING TEMPERATURES EXPECTED
ACROSS THE AREA TODAY AS HIGH PRESSURE BUILDS IN FROM THE WEST.
FREEZE WARNING EXPIRED AT 9AM AND DO NOT ANTICIPATE THE NEED FOR
ANOTHER ONE TONIGHT AS THE AIRMASS SHOULD WARM ENOUGH TO KEEP MINS
ABOVE 0C OVER MOST OF THE AREA. WARMING TREND CONTINUES FOR
TUESDAY AS MAX TEMPS SHOULD BE AROUND CLIMO.

RIDGE SHIFTS EAST TUESDAY AHEAD OF THE APPROACHING PACIFIC STORM
SYSTEM. WINDS WILL INCREASE TUESDAY AFTERNOON AS SOUTHWEST FLOW
INCREASES TO 25-35 KTS AT 700 MB AND THE SURFACE GRADIENT
TIGHTENS. FIRE WEATHER WATCH FOR WESTERN UTAH WILL LIKELY NEED TO
UPGRADED TO A RED FLAG WARNING. SEE FIRE WEATHER SECTION FOR
DETAILS.

FOLLOWING GFS LEAD FOR THIS SYSTEM...ALTHOUGH THERE IS GOOD
AGREEMENT BETWEEN ALL THE GLOBAL MODELS. STORM SYSTEM MOVES
THROUGH THE AREA TUESDAY NIGHT AND WEDNESDAY. 700 MB TEMPS DROP TO
AROUND -4C SO THE SYSTEM IS NOT AS COLD AS THE PREVIOUS ONE...BUT
MAX TEMPS SHOULD STILL BE 10-20F COLDER ON WEDNESDAY THAN THURSDAY
ACROSS THE AREA. THIS SYSTEM SHOULD BE MUCH LESS MOIST AS WELL AS
IT NEVER SEEMS TO TAP INTO THE SUBTROPICAL MOISTURE LIKE THE PREVIOUS
SYSTEM. SNOW LEVELS WILL MOSTLY REMAIN ABOVE ABOUT 7000 FT...BUT
PERIODS OF HEAVIER PRECIP COULD BRING SNOW LEVELS DOWN AS LOW AS
6000 FT. HIGHER ELEVATION SNOW AMOUNTS SHOULD BE IN THE 2-4 INCH
RANGE...THOUGH AREAS THAT DO WELL IN NORTHWESTERLY FLOW COULD SEE
HIGHER AMOUNTS.

NO UPDATES PLANNED THIS MORNING...THOUGH WILL LIKELY BUMP POPS UP FOR
TUESDAY NIGHT AND WEDNESDAY AS CONFIDENCE IN THE TIMING OF THE
STORM SYSTEM INCREASES.

&&

.AVIATION...SEE LATEST SLCTAFSLC.

&&

.FIRE WEATHER...AHEAD OF THE APPROACHING PACIFIC STORM
SYSTEM...INCREASING SOUTH WINDS AND LOW RELATIVE HUMIDITY PRESENT A
FIRE WEATHER CONCERN FOR TUESDAY AFTERNOON AND EVENING ACROSS THE
WESTERN DESERTS AND MOUNTAINS OF UTAH. SOUTH WINDS OF 20 MPH WITH
GUSTS TO 35 MPH WITH HUMIDITY RANGING FROM 8 TO 14 PERCENT ARE
EXPECTED ON TUESDAY AFTERNOON AND EVENING IN THESE AREAS AND A FIRE
WEATHER WATCH REMAINS IN EFFECT. WILL LIKELY ISSUE A RED FLAG
WARNING FOR THE AFTERNOON PACKAGE.

GUSTY WINDS AND LOW HUMIDITY MAY ALSO CREATE FIRE WEATHER PROBLEMS
ON WEDNESDAY ALONG THE UTAH AND ARIZONA BORDER AS THE COLD FRONT
MOVES THROUGH THAT AREA DURING WEDNESDAY AFTERNOON.

GOOD CHANCE OF WETTING RAINS FOR NORTHEAST UTAH...FROM ABOUT PROVO
NORTHWARD TUESDAY NIGHT THROUGH WEDNESDAY MORNING...THEN SCATTERED
SHOWERS BEHIND THE COLD FRONT.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...FIRE WEATHER WATCH FROM 1 PM TUESDAY TO 8 PM TUESDAY FOR
UTZ420- UTZ434-UTZ435-UTZ437-UTZ439.

WY...NONE.

&&

PUBLIC...TRAPHAGAN/SMITH
FIRE WEATHER...TARDY

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
136 PM MDT MON SEP 18 2006

UTZ005-012>021-191200-
CASTLE COUNTRY-CENTRAL AND SOUTHWEST MOUNTAINS-
GLEN CANYON RECREATION AREA/LAKE POWELL-
GREAT SALT LAKE DESERT AND MOUNTAINS-HENRY MOUNTAINS-
SAN RAFAEL SWELL-SANPETE/SEVIER VALLEYS-SOUTH CENTRAL UTAH-
SOUTHWEST UTAH-UTAHS DIXIE AND ZION NATIONAL PARK-WEST CENTRAL UTAH-
136 PM MDT MON SEP 18 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR FAR WESTERN...CENTRAL
AND MOST OF SOUTHERN UTAH.

.DAY ONE...TODAY

CLEAR SKIES THROUGH TONIGHT.

VALLEYS WILL EXPERIENCE ANOTHER COLD NIGHT WITH FROST LIKELY
IN THE MOUNTAIN VALLEYS AGAIN.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

ANOTHER COLD FRONT WILL APPROACH THE REGION ON TUESDAY AND RESULT IN
WARM AND BREEZY CONDITIONS. REFER TO FIRE WEATHER PRODUCTS FOR
DETAILS ABOUT EXTREME FIRE WEATHER CONDITIONS THAT WILL DEVELOP.

THE COLD FRONT WILL SWEEP THROUGH NORTHERN UTAH TUESDAY NIGHT AND
WEDNESDAY MORNING...REACHING FAR SOUTHERN UTAH BY WEDNESDAY
AFTERNOON. SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS WILL
OCCUR NEAR AND BEHIND THIS FRONT...WHILE WINDY CONDITIONS WILL
CONTINUE AHEAD AND JUST BEHIND THE COLD FRONT FOR SOUTHERN AND
EASTERN UTAH ON WEDNESDAY.

.SPOTTER INFORMATION STATEMENT...

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

UTZ001>004-006>011-WYZ021-191200-
CACHE VALLEY/UTAH PORTION-NORTHERN WASATCH FRONT-
SALT LAKE AND TOOELE VALLEYS-SOUTHERN WASATCH FRONT-
SOUTHWEST WYOMING-WASATCH MOUNTAIN VALLEYS-WASATCH MOUNTAINS I-
80 NORTH-WASATCH MOUNTAINS SOUTH OF I-80-WASATCH PLATEAU/BOOK CLIFFS-
WESTERN UINTA BASIN-WESTERN UINTA MOUNTAINS-
136 PM MDT MON SEP 18 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MUCH OF NORTHERN UTAH AND
EXTREME SOUTHWEST WYOMING.

.DAY ONE...TODAY

CLEAR SKIES THROUGH TONIGHT.

VALLEYS WILL EXPERIENCE ANOTHER COLD NIGHT WITH FROST LIKELY
IN THE MOUNTAIN VALLEYS AGAIN.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

ANOTHER COLD FRONT WILL APPROACH THE REGION ON TUESDAY AND RESULT IN
A WARMER AND BREEZY DAY. THE COLD FRONT WILL SWEEP THROUGH NORTHERN
UTAH TUESDAY NIGHT AND WEDNESDAY MORNING. STRONG WIND GUSTS WILL
OCCUR ALONG THE FRONT...ESPECIALLY IN THE MOUNTAINS OF NORTHERN UTAH
AND ACROSS NORTHWEST DESERTS.

WIDESPREAD PRECIPITATION WILL OCCUR NEAR AND BEHIND THIS FRONT. IT
WILL BECOME COLD ENOUGH FOR A PERIOD OF SNOW ON WEDNESDAY FOR
ELEVATIONS MAINLY ABOVE 7000 FEET. ACCUMULATIONS ARE POSSIBLE ACROSS
THE MOUNTAINS OF NORTH CENTRAL AND NORTHERN UTAH. THE PRECIPITATION
WILL TAPER TO SCATTERED SHOWERS LATE WEDNESDAY AND WEDNESDAY NIGHT.

.SPOTTER INFORMATION STATEMENT...

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

TARDY