Red Flag Warning 11, NWS Salt Lake City, UT

000 
WWUS85 KSLC 110309
RFWSLC

RED FLAG WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
909 PM MDT SAT MAY 10 2008

UTZ439-440-111200-
/O.CON.KSLC.FW.W.0011.080511T1800Z-080512T0300Z/
UTAHS DIXIE AND ZION CANYON-SOUTH CENTRAL UTAH-
909 PM MDT SAT MAY 10 2008

...RED FLAG WARNING REMAINS IN EFFECT FROM 12 PM TO 9 PM MDT
SUNDAY FOR GUSTY WINDS AND LOW HUMIDITIES FOR FIRE WEATHER
ZONES 439 AND 440 BELOW 6500 FEET...

A RED FLAG WARNING REMAINS IN EFFECT FROM 12 PM TO 9 PM MDT
SUNDAY FOR UTAHS DIXIE...ZION CANYON AND SOUTH CENTRAL UTAH.

STRONG SOUTHWESTERLY WINDS...WITH GUSTS IN EXCESS OF 30 MPH...
WILL DEVELOP ACROSS SOUTHWEST AND SOUTH CENTRAL UTAH SUNDAY
AFTERNOON. THESE WINDS...COMBINED WITH A VERY DRY AIRMASS ALREADY
IN PLACE...WILL RESULT IN SEVERE FIRE WEATHER CONDITIONS SUNDAY
AFTERNOON AND EVENING ACROSS UTAHS DIXIE AND ZION NATIONAL PARK...
AS WELL AS PORTIONS OF SOUTH CENTRAL UTAH BELOW 6500 FEET.

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

$$

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

000 
WWUS85 KSLC 110919
RFWSLC

RED FLAG WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
319 AM MDT SUN MAY 11 2008

UTZ439-440-112200-
/O.CON.KSLC.FW.W.0011.080511T1800Z-080512T0300Z/
UTAHS DIXIE AND ZION CANYON-SOUTH CENTRAL UTAH-
319 AM MDT SUN MAY 11 2008

...RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT
THIS EVENING FOR GUSTY WINDS AND LOW HUMIDITIES FOR FIRE WEATHER
ZONES 439 AND 440 BELOW 6500 FEET...

A RED FLAG WARNING REMAINS IN EFFECT FROM NOON TODAY TO 9 PM MDT
THIS EVENING FOR UTAHS DIXIE...ZION CANYON AND PORTIONS OF SOUTH
CENTRAL UTAH BELOW 6500 FEET.

STRONG SOUTHWESTERLY WINDS...WITH GUSTS IN EXCESS OF 30 MPH...
WILL DEVELOP ACROSS SOUTHWEST AND SOUTH CENTRAL UTAH THIS
AFTERNOON. THESE WINDS...COMBINED WITH A VERY DRY AIRMASS ALREADY
IN PLACE...WILL RESULT IN SEVERE FIRE WEATHER CONDITIONS THIS
AFTERNOON AND EVENING ACROSS UTAHS DIXIE AND ZION NATIONAL
PARK...AS WELL AS PORTIONS OF SOUTH CENTRAL UTAH BELOW 6500 FEET.

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

$$

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

000 
WWUS85 KSLC 112054
RFWSLC

RED FLAG WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
254 PM MDT SUN MAY 11 2008

UTZ439-120500-
/O.EXT.KSLC.FW.W.0011.000000T0000Z-080512T0500Z/
UTAHS DIXIE AND ZION CANYON-
254 PM MDT SUN MAY 11 2008

...RED FLAG WARNING NOW IN EFFECT UNTIL 11 PM MDT THIS EVENING FOR 
STRONG WINDS AND LOW RELATIVE HUMIDITY IN FIRE WEATHER ZONE 439 
BELOW 6500 FEET...

THE RED FLAG WARNING IS NOW IN EFFECT UNTIL 11 PM MDT THIS
EVENING FOR STRONG WINDS AND LOW RELATIVE HUMIDITY IN DIXIE AND 
THE ZION NATIONAL PARK AREA BELOW 6500 FEET. 

STRONG SOUTHWESTERLY WINDS...WITH GUSTS IN EXCESS OF 30 MPH...
WILL CONTINUE ACROSS SOUTHWEST UTAH WELL INTO THIS EVENING.
THESE WINDS...COMBINED WITH A VERY DRY AIRMASS ALREADY
IN PLACE...WILL RESULT IN SEVERE FIRE WEATHER CONDITIONS. 

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

$$

UTZ440-121100-
/O.EXT.KSLC.FW.W.0011.000000T0000Z-080512T2200Z/
SOUTH CENTRAL UTAH-
254 PM MDT SUN MAY 11 2008

...RED FLAG WARNING NOW IN EFFECT UNTIL 4 PM MDT MONDAY FOR STRONG 
WINDS AND LOW RELATIVE HUMIDITY IN FIRE WEATHER ZONE 440 BELOW 
6500 FEET...

THE RED FLAG WARNING IS NOW IN EFFECT UNTIL 4 PM MDT MONDAY FOR
STRONG WINDS AND LOW RELATIVE HUMIDITY FOR SOUTH CENTRAL UTAH 
BELOW 6500 FEET. 

STRONG SOUTHWESTERLY WINDS...WITH GUSTS IN EXCESS OF 30 MPH...
WILL CONTINUE ACROSS SOUTH CENTRAL UTAH THROUGH THIS EVENING. 
ALTHOUGH WINDS WILL RELAX FOR A TIME OVERNIGHT...WEST WINDS WILL
INCREASE ABOVE 25 MPH AGAIN BY MID MORNING. DUE TO POOR RELATIVE
HUMIDITY RECOVERY OF LESS THAN 20 PERCENT SEVERE FIRE WEATHER
CONDITIONS WILL RESUME BY MID MORNING.

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

$$

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

000 
WWUS85 KSLC 120912
RFWSLC

RED FLAG WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
312 AM MDT MON MAY 12 2008

UTZ440-122100-
/O.CON.KSLC.FW.W.0011.000000T0000Z-080512T2200Z/
SOUTH CENTRAL UTAH-
312 AM MDT MON MAY 12 2008

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 4 PM MDT THIS
AFTERNOON FOR STRONG WEST WINDS AND LOW RELATIVE HUMIDITY FOR 
FIRE WEATHER ZONE 440 BELOW 6500 FEET...

A RED FLAG WARNING REMAINS IN EFFECT UNTIL 4 PM MDT THIS
AFTERNOON DUE TO STRONG WINDS AND LOW RELATIVE HUMIDITY ACROSS
SOUTH CENTRAL UTAH BELOW 6500 FEET.

STRONG WESTERLY WINDS...WITH GUSTS IN EXCESS OF 35 MPH...WILL
DEVELOP ACROSS SOUTH CENTRAL UTAH BY MID MORNING AND COMBINE WITH
LOW RELATIVE HUMIDITY TO PRODUCE SEVERE FIRE WEATHER CONDITIONS
THROUGH 4 PM MDT.

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

$$

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

000 
WWUS85 KSLC 122211
RFWSLC

RED FLAG WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
411 PM MDT MON MAY 12 2008

UTZ440-122315-
/O.EXP.KSLC.FW.W.0011.000000T0000Z-080512T2200Z/
SOUTH CENTRAL UTAH-
411 PM MDT MON MAY 12 2008

...RED FLAG WARNING HAS EXPIRED...

THE RED FLAG WARNING IS NO LONGER IN EFFECT. 

THE RED FLAG WARNING FOR SOUTH CENTRAL UTAH WAS ALLOWED TO EXPIRE
AT 400 PM MDT. STRONG AND GUSTY WESTERLY WINDS WERE OBSERVED
ACROSS THE WARNING AREA...HOWEVER HUMIDITY VALUES REMAINED ABOVE
15 PERCENT THIS AFTERNOON.

GUSTY NORTH WINDS ARE EXPECTED AGAIN ON TUESDAY. RELATIVE HUMIDITY
VALUES WILL DROP INTO THE UPPER TEENS DURING THE AFTERNOON...BUT
ARE NOT EXPECTED TO DROP BELOW 15 PERCENT.

$$

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

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
951 AM MDT SAT MAY 10 2008

.SYNOPSIS...HIGH PRESSURE WILL BUILD IN THE REGION THIS WEEKEND
AND BRING A WARMING TREND. ANOTHER COLD FRONT WILL CROSS THE AREA
ON MONDAY.

&&

.DISCUSSION...THE TROUGH THAT IMPACTED THE AREA YESTERDAY HAS
MOVED EASTWARD INTO COLORADO...CREATING MOSTLY CLEAR SKIES ACROSS
MOST OF THE CWA WITH THE SHORTWAVE RIDGING. A DECENT NORTHERLY
SURFACE PRESSURE GRADIENT STILL EXISTS ACROSS THE STATE OF
UTAH...PARTICULARLY IN THE SOUTHERN HALF OF THE STATE...BUT IS
EXPECTED TO RELAX THROUGHOUT THE DAY. THE CURRENT FORECAST LOOKS
GOOD AND NO UPDATES ARE PLANNED THIS MORNING.

WHILE A COOL NORTHERLY FLOW IS STILL IN PLACE FOR TODAY...WARM
ADVECTION ON SUNDAY WILL LEAD TO MAXIMUM TEMPERATURES ABOUT 5 TO
10 DEGREES ABOVE CLIMATOLOGY. SOUTHWEST FLOW WILL ALSO INCREASE ON
SUNDAY AHEAD OF THE APPROACHING SHORTWAVE TROUGH. THIS TROUGH IS
CURRENTLY OFF THE COAST OF BRITISH COLUMBIA AND IS EXPECTED TO
MOVE THROUGH THE PACIFIC NORTHWEST TODAY. CURRENT MODEL RUNS ARE A
LITTLE FASTER WITH THIS TROUGH THAN THEY HAVE BEEN MOST OF THE
WEEK. THE ASSOCIATED COLD FRONT IS NOW FORECAST TO ENTER THE FAR
NORTHWESTERN CORNER OF UTAH AS EARLY AS SUNDAY EVENING AND MOVE
THROUGH THE ENTIRE STATE OF UTAH BY THE END OF THE DAY MONDAY.
WILL TAKE A CLOSER LOOK AT THE LATER MODELS RUNS TODAY TO SEE IF
THIS FASTER SOLUTION HAS ANY RUN-TO-RUN CONSISTENCY BEFORE MAKING
ANY TWEAKS THAT THE FASTER SOLUTION MIGHT ENTAIL.

BEYOND MONDAYS TROUGH BOTH THE GFS AND EC SHOW A HIGH AMPLITUDE
RIDGE BUILDING ALONG THE WEST COAST. THE ONLY MAJOR DIFFERENCE
BETWEEN THE TWO MODELS IS EXACTLY WHERE THE AXIS OF THIS RIDGE
WILL BE ON WEDNESDAY AND THURSDAY. THE GFS HAS THE RIDGE FURTHER
WEST...WHICH ALLOWS A SHORTWAVE TROUGH TO MOVE INTO THE
AREA...RIDING ALONG THE EASTERN SIDE OF THE RIDGE. THIS CONFLICT
BETWEEN THE TWO MODELS CREATES ABOUT A 6 DEGREE CELSIUS
DIFFERENCE IN THE RESPECTIVE 700 MB TEMP FIELDS FOR THE THURSDAY
TO SATURDAY PERIOD...WITH THE EC BEING SIGNIFICANTLY WARMER. WILL
TAKE A LOOK AT FUTURE RUNS AND ENSEMBLES BEFORE DECIDING WHICH
SOLUTION TO LEAN TOWARD.

&&

.AVIATION...THE CURRENT LIGHT AND VARIABLE WINDS AT SLC TERMINAL
SHOULD BECOME SUSTAINED FROM THE NORTHWEST BY 18Z. OTHERWISE...NO
SIGNIFICANT AVIATION ISSUES ARE EXPECTED FOR TODAY.

&&

.FIRE WEATHER...HIGH PRESSURE WILL BUILD ACROSS THE REGION
TODAY...WHICH WILL RESULT IN LIGHT WINDS GENERALLY DOMINATED BY
TERRAIN FLOW. INCREASING SOUTHWESTERLY FLOW ON SUNDAY COMBINED
WITH A VERY DRY AIRMASS WILL LIKELY RESULT IN CRITICAL FIRE
WEATHER CONDITIONS ACROSS FAR SOUTHERN UTAH WHERE FUELS ARE
SUFFICIENTLY DRY. A COLD FRONT IS EXPECTED TO PUSH THROUGH MUCH OF
THE AREA LATE SUNDAY NIGHT INTO MONDAY...BRINGING HIGHER RELATIVE
HUMIDITY ALONG WITH SHOWERS AND THUNDERSTORMS.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...FIRE WEATHER WATCH FROM NOON SUNDAY TO 9 PM SUNDAY FOR UTZ019-
     UTZ020.

WY...NONE.

&&

PUBLIC...SCHOENING
AVIATION...SCHOENING
FIRE WEATHER...SEAMAN

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

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
400 AM MDT SAT MAY 10 2008

UTZ001>016-019>021-517-518-WYZ021-111130-
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-
400 AM MDT SAT MAY 10 2008

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

.DAY ONE...TODAY AND TONIGHT

SUNNY SKIES TODAY.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

BREEZY AND WARMER WEATHER EXPECTED ON SUNDAY WITH VERY LOW HUMIDITY
ACROSS WESTERN AND SOUTHERN UTAH. THIS MAY CREATE SEVERE FIRE WEATHER
CONDITIONS IN THE FAR SOUTHWEST. THE NEXT COLDER STORM SYSTEM WILL
ARRIVE ON MONDAY AND COULD BRING WIDESPREAD SHOWERS AND
THUNDERSTORMS.

ISOLATED SHOWERS AND THUNDERSTORMS WILL LINGER IN EASTERN AND
SOUTHERN UTAH ON TUESDAY. A WARMING TREND WILL OCCUR TUESDAY THROUGH
FRIDAY.

.SPOTTER INFORMATION STATEMENT...

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

TARDY

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