Severe Thunderstorm Warning 37, NWS Salt Lake City, UT

000 
WWUS55 KSLC 260333
SVSSLC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
929 PM MDT TUE JUL 25 2006

UTC003-260345-
/O.CON.KSLC.SV.W.0037.000000T0000Z-060726T0345Z/
BOX ELDER UT-
929 PM MDT TUE JUL 25 2006

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 PM MDT
FOR CENTRAL BOX ELDER COUNTY...

AT 925 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS
IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED 7 MILES WEST OF 
LAKESIDE...AND MOVING EAST AT 35 MPH.

DOPPLER RADAR INDICATES WINDS ALONG WESTERN SHORE OF THE GREAT SALT 
LAKE ARE GUSTING TO AT LEAST 60 MPH. THESE WINDS WILL SPREAD EAST 
AWAY FROM THE STORM...POSSIBLY REACHING THE NORTHERN WASATCH FRONT 
AROUND 1000 PM MDT. 

LAT...LON 4160 11348 4107 11348 4102 11309 4105 11270 4146 11281

$$

000 
WWUS55 KSLC 260347
SVSSLC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
945 PM MDT TUE JUL 25 2006

UTC003-260355-
/O.EXP.KSLC.SV.W.0037.000000T0000Z-060726T0345Z/
BOX ELDER UT-
945 PM MDT TUE JUL 25 2006

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL BOX ELDER COUNTY
EXPIRES AT 945 PM MDT...

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE 
THUNDERSTORM WHICH PROMPTED THE WARNING HAS WEAKENED. 
HOWEVER...DOPPLER RADAR ALSO INDICATES THAT STRONG WINDS STILL EXIST 
ACROSS THE WESTERN HALF OF THE GREAT SALT LAKE. THESE STRONG WINDS 
COULD REACH THE POPULATED AREAS OF THE NORTHERN WASATCH AFTER 1030 
PM MDT.

LAT...LON 4160 11348 4107 11348 4102 11309 4105 11270

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
315 PM MDT TUE JUL 25 2006

.SYNOPSIS...A SLOW WARMING AND DRYING TREND WILL OCCUR THROUGH
FRIDAY AS RIDGE OF HIGH PRESSURE REDEVELOPS TO THE WEST OF THE
AREA. MOISTURE WILL INCREASE OVER THE WEEKEND AS THE RIDGE SLIDES
EAST OF THE AREA.

&&

.DISCUSSION...ZONE FORECAST PRODUCT HAS BEEN SENT OUT A LITTLE
EARLY DUE TO CONVECTION DEVELOPING OVER THE NORTH THAT WAS NOT
MENTIONED IN THE PREVIOUS PACKAGE. MOIST AIRMASS STILL REMAINS
OVER THE AREA AND EVEN THOUGH DRYING IS SLOWLY TAKING PLACE FROM
THE NORTH. DRYING AND STABILIZATION DOES NOT TAKE A FIRM HOLD
UNTIL THURSDAY. A SERIES OF WEAK DISTURBANCES WILL MOVE OVER THE
AREA THE REST OF THIS AFTERNOON AND EVENING WITH A STRONGER
DISTURBANCE WEDNESDAY MORNING INTO THE AFTERNOON. POPS HAVE BEEN
INCREASED SLIGHTLY OVER NORTHEAST UTAH AND SOUTHWEST WYOMING TO
ACCOUNT FOR INSTABILITY ASSOCIATED WITH THE STRONGER DISTURBANCE.
AFTER THE DISTURBANCE MOVES BY...700 MB MIXING RATIOS DECREASE
FROM 6-8 G/KG TO 3-4 G/KG BEHIND THE DISTURBANCE AND 700 MB
TEMPERATURES CONTINUE TO WARM OVER THE AREA. THE AREA WILL FLIRT
WITH NEAR-RECORD LEVELS BY THURSDAY AGAIN. THURSDAY LOOKS TO BE
THE WARMEST DAY OVER THE SOUTHERN PART OF THE AREA...WHILE FRIDAY
MAY BE WARMEST OVER THE NORTHERN PART. A SURGE OF MOISTURE WILL
MOVE BACK OVER THE AREA FRIDAY FROM THE SOUTHWEST AND COULD
CREATE FIRE WEATHER ISSUE FOR LATE WEEK DEPENDING ON THE STATUS OF
FUELS.

RIDGE SHIFTS EAST OF THE AREA ON FRIDAY NIGHT OPENING THE DOOR FOR
MOISTURE TO INCREASE OVER THE ENTIRE AREA. MIXING RATIOS INCREASE
RAPIDLY OVER THE AREA...EXCEEDING 8 G/KG OVER THE AREA BY SUNDAY.
GFS PUSHES WEAK FRONTAL BOUNDARY INTO THE NORTHWEST CORNER OF UTAH
BY MONDAY...BUT GFS MAY BE TOO AGGRESSIVE WITH TROUGH. THIS WOULD
SEEM TO MAKE SENSE BASED ON THE TIME OF YEAR IT IS. USUALLY...GFS
MODELS FRONTAL BOUNDARIES TO BE STRONGER THAN WHAT REALLY OCCURS
THIS TIME YEAR. EXPECT COOLING OVER THE AREA TO NEAR NORMAL BY
EARLY NEXT WEEK WITH 700 MB TEMPERATURES IN 12 TO 13 DEGREE RANGE
OVER THE NORTHERN PART OF THE AREA.

&&

.AVIATION...LAKE-BREEZE CIRCULATION AT KSLC...BUT LIGHT AND SHOULD
PREVAIL UNTIL AROUND 03Z. THUNDERSTORMS DEVELOPING TO THE SOUTH OF
THE AIRFIELD AND SHOULD NOT IMPACT KSLC...BUT COULD MOVE OVER THE
SOUTHERN KSLC APPROACH PATTERN. OUTFLOW FROM CONVECTIVE STORMS COULD
AFFECT THE KSLC APPROACH PATTERN OVER THE NEXT SEVERAL HOURS WITH
ERRATIC AND GUSTY WINDS TO 35 MPH. LAND-BREEZE PATTERN EXPECTED TO
DEVELOP TONIGHT BY 03Z AT THE EARLIEST.

&&

.FIRE WEATHER...THUNDERSTORMS HAVE DEVELOPED MAINLY OVER THE HIGH
TERRAIN IN TYPICAL DIURNAL FASHION. THESE THUNDERSTORMS WILL DRIFT
SLOWLY SOUTHEAST AND MOST SHOULD TAPER OFF TONIGHT. THUNDERSTORMS
WILL PRODUCE LOCALLY WETTING RAINS. HUMIDITIES REMAIN RELATIVELY
HIGH IN MANY AREAS THIS AFTERNOON AND HUMIDITY RECOVERIES SHOULD BE
PRETTY GOOD AGAIN TONIGHT. AS DRIER AIR SPREADS INTO THE FIRE
DISTRICT FROM THE NORTH...THUNDERSTORM ACTIVITY SHOULD DECREASE
THROUGH THE END OF THE WORK WEEK WITH A RISING TEMPERATURE/LOWERING
RH TREND.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...NONE.
WY...NONE.

&&

PUBLIC...HALL
FIRE WEATHER...CHENG
AVIATION...YOUNG

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
400 AM MDT TUE JUL 25 2006

UTZ001>011-WYZ021-261300-
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-SOUTHWEST WYOMING-
400 AM MDT TUE JUL 25 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL UTAH...
NORTHERN UTAH AND SOUTHWEST WYOMING.

.DAY ONE...TODAY AND TONIGHT

ISOLATED THUNDERSTORMS OVER THE WEST DESERTS AND WESTERN UINTA
BASIN WILL END EARLY THIS MORNING WITH CLEARING SKIES BY LATE
MORNING. ISOLATED SHOWERS AND THUNDERSTORMS WILL THEN DEVELOP
THIS AFTERNOON THROUGH THIS EVENING FOR THE MOUNTAINS NORTH OF
I-80 WITH SCATTERED THUNDERSTORMS OVER THE HIGHER TERRAIN SOUTH OF
I-80.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

MOSTLY SUNNY AND HOT WEATHER IS EXPECTED FOR WEDNESDAY AND
THURSDAY. FOR FRIDAY THROUGH THE WEEKEND ENOUGH MOISTURE WILL
RETURN FOR SCATTERED DAILY SHOWER AND THUNDERSTORM ACTIVITY.
SOUTHWEST FLOW OVER THE WEEKEND WILL BRING A BETTER CHANCE OF
STORMS FOR THE WASATCH FRONT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

UTZ012>021-261300-
CASTLE COUNTRY-SAN RAFAEL SWELL-SANPETE/SEVIER VALLEYS-
WEST CENTRAL UTAH-SOUTHWEST UTAH-CENTRAL AND SOUTHWEST MOUNTAINS-
HENRY MOUNTAINS-UTAHS DIXIE AND ZION NATIONAL PARK-
SOUTH CENTRAL UTAH-GLEN CANYON RECREATION AREA/LAKE POWELL-
400 AM MDT TUE JUL 25 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL UTAH
AND SOUTHERN UTAH.

.DAY ONE...TODAY AND TONIGHT

A MOIST AIRMASS IS OVER SOUTHERN UTAH TODAY. SCATTERED SHOWERS AND
THUNDERSTORMS THIS MORNING WILL END WITH CLEARING BY LATE MORNING.
SCATTERED WET THUNDERSTORMS WILL THEN DEVELOP OVER MOUNTAIN AREAS
WHILE THE VALLEYS WILL BE MOSTLY SUNNY AND HOT DURING THE
AFTERNOON. THE STORMS WILL THEN MOVE TO THE VALLEYS AND DESERTS
DURING THE LATER AFTERNOON AND EVENING HOURS...BRINGING A MODERATE
CHANCE OF FLASH FLOODING.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

SHOWER ACTIVITY WILL DECREASE FOR WEDNESDAY AND THURSDAY WITH A
DECREASING RISK OF FLASH FLOODING. THUNDERSTORMS WEDNESDAY AND
THURSDAY SHOULD BE RESTRICTED TO THE SOUTHWEST MOUNTAINS AND
SOUTH-CENTRAL UTAH. LOWER ELEVATIONS WILL CONTINUE TO HAVE HOT
AFTERNOON WEATHER WITH TEMPERATURES CONTINUING ABOVE NORMAL.

.SPOTTER INFORMATION STATEMENT...

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

GIBSON