Red Flag Warning 1, NWS Salt Lake City, UT

000 
WWUS85 KSLC 210432
RFWSLC

RED FLAG WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1032 PM MDT SAT MAY 20 2006

UTZ434-435-437-439-440-211245-
/O.CON.KSLC.FW.W.0001.060521T1600Z-060522T0400Z/
WEST CENTRAL DESERTS AND MOUNTAINS-
SOUTHWEST DESERTS AND MOUNTAINS-
SOUTHWEST AND SOUTH CENTRAL MOUNTAINS-UTAHS DIXIE AND ZION CANYON-
SOUTH CENTRAL UTAH-
1032 PM MDT SAT MAY 20 2006

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM TO 10 PM MDT
SUNDAY...

A RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM TO 10 PM MDT
SUNDAY. 

THIS WARNING INCLUDES FIRE WEATHER ZONES 434...435...437...439 ...
AND 440 BELOW 7500FT WHERE FUELS HAVE CURED.

SOUTHERLY WINDS ARE EXPECTED TO INCREASE THROUGH THE DAY ON
SUNDAY. WINDS ARE EXPECTED TO INCREASE TO 20-30 MPH WITH GUSTS
OVER 35 MPH IN SOUTHWEST UTAH AND TO 15-25 MPH WITH GUSTS TO 30
MPH IN SOUTH CENTRAL UTAH ON SUNDAY AFTERNOON. IN ADDITION...LOW
RELATIVE HUMIDITIES OF LESS THAN 15 PERCENT ARE EXPECTED ACROSS
THIS REGION.

A RED FLAG WARNING MEANS THAT SEVERE FIRE WEATHER CONDITIONS ARE
EITHER OCCURRING NOW...OR WILL SHORTLY. THIS WARNING MAY BE
REISSUED OR EXTENDED INTO MONDAY AS DRY AND WINDY CONDITIONS ARE
EXPECTED TO CONTINUE.

$$

UTZ420-211245-
/O.CON.KSLC.FW.W.0001.060521T1600Z-060522T0400Z/
GREAT SALT LAKE DESERT AND MOUNTAINS-
1032 PM MDT SAT MAY 20 2006

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM TO 10 PM MDT
SUNDAY...

A RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM TO 10 PM MDT
SUNDAY. 

THIS WARNING INCLUDES FIRE WEATHER ZONE 420 BELOW 7500FT WHERE 
FUELS HAVE CURED...AND IS PRIMARILY FOR THE PORTION OF THE ZONE
SOUTH OF INTERSTATE 80.

SOUTHERLY WINDS ARE EXPECTED TO INCREASE TO 20-30 MPH WITH GUSTS
OVER 35 MPH OVER MUCH OF NORTHWEST UTAH ON SUNDAY AFTERNOON. IN
ADDITION...LOW RELATIVE HUMIDITIES OF LESS THAN 15 PERCENT ARE
EXPECTED ACROSS THIS REGION.

A RED FLAG WARNING MEANS THAT SEVERE FIRE WEATHER CONDITIONS ARE
EITHER OCCURRING NOW...OR WILL SHORTLY. THIS WARNING MAY BE
REISSUED OR EXTENDED INTO MONDAY AS DRY AND WINDY CONDITIONS ARE
EXPECTED TO CONTINUE.

$$

000 
WWUS85 KSLC 211017
RFWSLC

RED FLAG WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
417 AM MDT SUN MAY 21 2006

UTZ420-434-435-437-439-440-212100-
/O.CON.KSLC.FW.W.0001.060521T1600Z-060522T0400Z/
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-
SOUTH CENTRAL UTAH-
417 AM MDT SUN MAY 21 2006

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO
10 PM MDT THIS EVENING FOR WESTERN AND SOUTH CENTRAL UTAH FOR
STRONG WINDS AND LOW RELATIVE HUMIDITIES. THIS WARNING INCLUDES
FIRE WEATHER ZONES 420...434...435...437...439 AND 440 BELOW 7500
FT...

A RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THIS MORNING TO
10 PM MDT THIS EVENING FOR WESTERN AND SOUTH CENTRAL UTAH FOR STRONG
WINDS AND LOW RELATIVE HUMIDITIES. THIS WARNING INCLUDES FIRE
WEATHER ZONES 420 SOUTH OF I-80...434...435...437...439 AND 440
BELOW 7500 FT WHERE FUELS HAVE CURED.

SOUTH TO SOUTHWEST WINDS ARE EXPECTED TO INCREASE TO 20-25 MPH WITH
GUSTS OVER 35 MPH THIS AFTERNOON OVER WESTERN UTAH. IN SOUTH
CENTRAL UTAH...THE WINDS ARE EXPECTED TO BE IN THE 15-20 MPH RANGE
WITH GUSTS OVER 25 MPH. IN ADDITION TO THE WINDS...LOW RELATIVE
HUMIDITIES OF LESS THAN 15 PERCENT ARE EXPECTED ACROSS THE WARNING
AREA.

THE WINDS WILL DECREASE TONIGHT BUT ARE EXPECTED TO INCREASE AGAIN
LATE TOMORROW MORNING. AS A RESULT...THIS WARNING MAY NEED TO BE
EXTENDED INTO MONDAY OR EXPANDED INTO OTHER ZONES.

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

$$

000 
WWUS85 KSLC 212054
RFWSLC

RED FLAG WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
254 PM MDT SUN MAY 21 2006

UTZ420-434-435-437-439-440-220400-
/O.NEW.KSLC.FW.W.0002.060522T1800Z-060523T0400Z/
/O.CON.KSLC.FW.W.0001.000000T0000Z-060522T0400Z/
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-
SOUTH CENTRAL UTAH-
254 PM MDT SUN MAY 21 2006

...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM MDT THIS
EVENING...
...RED FLAG WARNING IN EFFECT FROM 12 PM TO 10 PM MDT MONDAY...

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A RED
FLAG WARNING...WHICH IS IN EFFECT FROM 12 PM TO 10 PM MDT MONDAY.
A RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM MDT THIS
EVENING FOR ELEVATIONS BELOW 7500 FEET WHERE FUELS HAVE CURED. 

SOUTH TO SOUTHWEST WINDS OF 25 TO 30 MPH WITH GUSTS OVER 35 MPH
ARE EXPECTED TO CONTINUE THIS AFTERNOON OVER WESTERN AND
SOUTHCENTRAL UTAH. IN ADDITION TO THE WINDS...LOW RELATIVE
HUMIDITIES OF LESS THAN 15 PERCENT WILL CONTINUE ACROSS THE
WARNING AREA.

THE WINDS WILL DECREASE TONIGHT BUT ARE EXPECTED TO INCREASE
AGAIN LATE TOMORROW MORNING. AS A RESULT...THIS WARNING HAS BEEN 
REISSUED AND WILL ONCE AGAIN GO INTO EFFECT AT 1200 MDT. IN
ADDITION TO THE WINDS AND LOW RH VALUES...THERE IS THE POTENTIAL
FOR THUNDERSTORMS PRODUCING DRY LIGHTNING.

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

$$

UTZ441-447>449-220600-
/O.NEW.KSLC.FW.W.0002.060522T1800Z-060523T0400Z/
GLEN CANYON RECREATION AREA/LAKE POWELL-
CANYONS NATIONAL PARK AND NATURAL BRIDGES NATIONAL MONUMENT-
LA SAL AND ABAJO MOUNTAINS-SOUTHERN SAN JUAN COUNTY-
254 PM MDT SUN MAY 21 2006

...RED FLAG WARNING IN EFFECT FROM 12 PM TO 10 PM MDT MONDAY...

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A RED
FLAG WARNING...WHICH IS IN EFFECT FROM 12 PM TO 10 PM MDT MONDAY
FOR ELEVATIONS BELOW 7500 FEET WHERE FUELS HAVE CURED.

SOUTH TO SOUTHWEST WINDS OF 25 TO 30 MPH WITH GUSTS OVER 35 MPH
ARE EXPECTED TO DEVELOP OVER MUCH OF SOUTHEASTERN UTAH ON MONDAY.
IN ADDITION TO THE WINDS...LOW RELATIVE HUMIDITIES OF LESS THAN
15 PERCENT ARE EXPECTED ACROSS THE WARNING AREA.

T IN ADDITION TO THE WINDS AND LOW RH VALUES...THERE IS THE
POTENTIAL FOR THUNDERSTORMS PRODUCING DRY LIGHTNING.

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

$$

000 
WWUS85 KSLC 220401
RFWSLC

RED FLAG WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1001 PM MDT SUN MAY 21 2006

UTZ420-434-435-437-439-440-221215-
/O.CAN.KSLC.FW.W.0001.000000T0000Z-060522T0400Z/
/O.CON.KSLC.FW.W.0002.060522T1800Z-060523T0400Z/
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-
SOUTH CENTRAL UTAH-
1001 PM MDT SUN MAY 21 2006

...RED FLAG WARNING IS CANCELLED...
...RED FLAG WARNING REMAINS IN EFFECT FROM 12 PM TO 10 PM MDT
MONDAY...

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS CANCELLED THE
RED FLAG WARNING THAT WAS IN EFFECT FOR THIS AFTERNOON AND EVENING.
A RED FLAG WARNING REMAINS IN EFFECT FROM 12 PM TO 10 PM MDT
MONDAY.

SOUTH TO SOUTHWEST WINDS OF 25 TO 30 MPH WITH GUSTS OVER 35 MPH
ARE EXPECTED TO DEVELOP OVER WESTERN AND SOUTH CENTRAL UTAH BY NOON
ON MONDAY. IN ADDITION TO THE WINDS...LOW RELATIVE HUMIDITIES OF LESS
THAN 15 PERCENT WILL BE IN PLACE ACROSS THE WARNING AREA. THERE
IS ALSO THE POTENTIAL FOR THUNDERSTORMS PRODUCING DRY LIGHTNING ON
MONDAY AFTERNOON.

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

$$

UTZ441-447>449-221215-
/O.CON.KSLC.FW.W.0002.060522T1800Z-060523T0400Z/
GLEN CANYON RECREATION AREA/LAKE POWELL-
CANYONS NATIONAL PARK AND NATURAL BRIDGES NATIONAL MONUMENT-
LA SAL AND ABAJO MOUNTAINS-SOUTHERN SAN JUAN COUNTY-
1001 PM MDT SUN MAY 21 2006

...RED FLAG WARNING REMAINS IN EFFECT FROM 12 PM TO 10 PM MDT
MONDAY...

A RED FLAG WARNING REMAINS IN EFFECT FROM 12 PM TO 10 PM MDT
MONDAY. 

SOUTH TO SOUTHWEST WINDS OF 25 TO 30 MPH WITH GUSTS OVER 35 MPH
ARE EXPECTED TO DEVELOP OVER MUCH OF SOUTHEASTERN UTAH ON MONDAY.
IN ADDITION TO THE WINDS...LOW RELATIVE HUMIDITIES OF LESS THAN
15 PERCENT ARE EXPECTED ACROSS THE WARNING AREA.

THERE IS ALSO THE POTENTIAL FOR THUNDERSTORMS PRODUCING DRY
LIGHTNING ON MONDAY AFTERNOON.

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

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
930 AM MDT SAT MAY 20 2006

.SYNOPSIS...A PACIFIC TROUGH JUST OFF THE CALIFORNIA COAST WILL
PRODUCE A STRONG SOUTH SOUTHWEST FLOW ALOFT OVER THE GREAT BASIN
THIS WEEKEND. THIS COASTAL TROUGH WILL MOVE THROUGH UTAH LATE
MONDAY...BRINGING PRECIPITATION AND MUCH COOLER TEMPERATURES TO THE
STATE.

&&

.DISCUSSION...VERY IMPRESSIVE TEMPERATURE GRADIENT AT 700 MB BETWEEN
SLC AND ELKO THIS MORNING ALTHOUGH NONE AT 500 MB. WATER VAPOR IMAGE
SHOWS A DARK BACK EDGE IN EASTERN NV ASSOCIATED WITH SHORT WAVE
TROUGH THAT EXTENDS FROM OREGON SOUTHEAST THROUGH ID AND INTO E NV.
SO IT APPEARS THE TAIL END OF A SHALLOW COLD FRONT IS SOMEWHERE NEAR
THE UT/NV BORDER. WENDOVER OBSERVATIONS SUGGEST IT IS WEST OF THE
BORDER EVEN THOUGH SEA LEVEL PRESSURE ANALYSIS PUTS SURFACE TROUGH
OVER THE GREAT SALT LAKE.

12Z NAM AND 12Z WRF INDICATE FLOW ALOFT WILL BACK BY MID DAY AND
THIS COLD FRONT WILL BE PUSHED NORTHWARD AS A WARM FRONT AND BECOME
ACTIVE WITH SHOWERS THIS AFTERNOON NEAR THE UT/ID/NV TRIPLE POINT
AND AREAS NORTH OF THERE.

WITH CONSIDERABLE DRYING OVER THE REST OF THE AREA COMPARED TO
YESTERDAY...ONLY SCATTERED MOUNTAIN CONVECTION EXPECTED ELSEWHERE
TODAY. SLC SOUNDING DOES HAVE VERY STEEP LAPSE RATES SO THERE COULD
BE HIGH BASED CONVECTION OVER THE VALLEYS BUT MAIN IMPACT WOULD BE
GUSTY WINDS RATHER THAN RAIN.

CURRENT FORECAST HAS THE ABOVE SCENARIO COVERED SO NO CHANGES AT
THIS TIME.

&&

.AVIATION...SEE LATEST SLCTAFSLC

&&

.HYDROLOGY...LOGAN RIVER JUST A .02 INCHES BELOW FLOOD STAGE IN LAST
READING FROM USGS GAUGE...BUT NO DATA SINCE 530 AM MDT. RIVER MODELS
SHOW LEVEL HOLDING AT THIS SAME LEVEL FOR THE NEXT FEW DAYS. HAVE
ASKED CACHE COUNTY SHERIFF TO TAKE SOME MANUAL OBSERVATIONS OF THE
RIVER SITUATION THIS MORNING.

&&

.FIRE WEATHER...FIRE WEATHER WATCH REMAINS IN EFFECT FOR SUNDAY.
INCREASING SOUTHERLY WINDS THIS WEEKEND COUPLED WITH DRYING ALREADY
IN PROGRESS COULD LEAD TO HAZARDOUS FIRE WEATHER CONDITIONS
OVER SOUTHERN UTAH. A FIRE WEATHER WATCH HAS BEEN ISSUED FOR
SOUTHWEST AND SOUTH CENTRAL UTAH FOR SUNDAY.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...FLOOD WATCH FOR UTZ001 - LOGAN RIVER IN CACHE COUNTY THROUGH
     MONDAY.
     FIRE WEATHER WATCH SUNDAY BELOW 7500 FT FOR FWX ZONES
     435-437-439>441.
WY...NONE.

&&

DUNN

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
650 AM MDT SAT MAY 20 2006

UTZ001>021-WYZ021-211300-
CACHE VALLEY/UTAH PORTION-CASTLE COUNTRY-CENTRAL AND SOUTHWEST
MOUNTAINS-GLEN CANYON RECREATION AREA/LAKE POWELL-GREAT SALT LAKE
DESERT AND MOUNTAINS-HENRY MOUNTAINS-NORTHERN WASATCH FRONT-SALT LAKE
AND TOOELE VALLEYS-SAN RAFAEL SWELL-SANPETE/SEVIER VALLEYS-SOUTH
CENTRAL UTAH-SOUTHERN WASATCH FRONT-SOUTHWEST UTAH-SOUTHWEST WYOMING-
UTAHS DIXIE AND ZION NATIONAL PARK-WASATCH MOUNTAIN VALLEYS-WASATCH
MOUNTAINS I-80 NORTH-WASATCH MOUNTAINS SOUTH OF I-80-WASATCH
PLATEAU/BOOK CLIFFS-WEST CENTRAL UTAH-WESTERN UINTA BASIN-WESTERN
UINTA MOUNTAINS-
650 AM MDT SAT MAY 20 2006

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

.DAY ONE...TODAY

UNSEASONABLY WARM TEMPERATURES WILL MAINTAIN THE RAPID HIGH ELEVATION
SNOW MELT TODAY. THIS HEAVY RUNOFF WILL KEEP RIVERS AND STREAMS
ACROSS NORTHERN UTAH RUNNING NEAR BANKFULL. SOME FLOODING COULD
DEVELOP ALONG THE LOGAN RIVER...ESPECIALLY IF RAIN FROM SHOWERS AND
THUNDERSTORMS FALLS ON THE DRAINAGE. A FLOOD WATCH REMAINS IN EFFECT
FOR THE LOGAN RIVER NEAR THE MOUTH OF LOGAN CANYON IN CACHE COUNTY.
SEE THE LATEST SLCFFASLC FOR DETAILS.

.DAYS TWO THROUGH SEVEN... SUNDAY THROUGH FRIDAY

ABOVE NORMAL TEMPERATURES AND ACCELERATED SNOWMELT RUNOFF WILL
CONTINUE INTO MONDAY. INCREASINGLY STRONG SOUTH WINDS AND A RATHER
DRY AIRMASS OVER THE AREA COULD RESULT IN HAZARDOUS FIRE WEATHER
CONDITIONS ON SUNDAY.

COOLER TEMPERATURES AND WIDESPREAD PRECIPITATION ARE EXPECTED WITH A
STORM SYSTEM PASSES SOUTHWEST TO NORTHEAST THROUGH UTAH LATE MONDAY.
SOME SNOW MAY FALL AT THE HIGHEST ELEVATION MONDAY NIGHT THROUGH
EARLY TUESDAY. TEMPERATURES WILL REBOUND A BIT BEGINNING MIDWEEK AS
A WARM AND GENERALLY DRY WEST SOUTHWEST FLOW ALOFT RETURN TO THE
AREA.

.SPOTTER INFORMATION STATEMENT...

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