Severe Thunderstorm Warning 66, NWS Salt Lake City, UT

000 
WWUS55 KSLC 162331
SVSSLC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
531 PM MDT WED AUG 16 2006

UTC015-055-162345-
/O.CON.KSLC.SV.W.0066.000000T0000Z-060816T2345Z/
WAYNE UT-EMERY UT-
531 PM MDT WED AUG 16 2006

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM MDT
FOR SOUTH CENTRAL EMERY AND CENTRAL WAYNE COUNTIES...

AT 529 PM MDT...TRAINED WEATHER SPOTTERS REPORTED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND DAMAGING
WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED 6 MILES WEST OF
HANKSVILLE...MOVING NORTHEAST AT 15 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  8 MILES SOUTHWEST OF GOBLIN VALLEY BY 545 PM MDT

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

LAT...LON 3840 11100 3824 11089 3838 11052 3858 11065

$$

HALL

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
330 PM MDT WED AUG 16 2006

.SYNOPSIS...DRY AIR ALREADY IN PLACE OVER WESTERN UTAH WILL SPREAD
OVER THE ENTIRE REGION TONIGHT.  A DRY COOL FRONT WILL PUSH INTO THE
NORTHERN SECTIONS OF UTAH ON THURSDAY...WITH RELATIVELY DRY
CONDITIONS PREVAILING FROM THURSDAY INTO THE START OF THE WEEKEND.

&&

.DISCUSSION...UPPER TROUGH WILL PUSH EASTWARD ACROSS THE NORTHERN
ROCKIES THROUGH THURSDAY NIGHT.  MID LEVEL ENERGY ROTATING ACROSS
THE SOUTHEAST SECTIONS OF FORECAST AREA THIS AFTERNOON...COUPLED
WITH LIFT FROM REGION BEING UNDER RIGHT ENTRANCE REGION OF 65KT
UPPER JET HAS TRIGGERED ISOLATED CONVECTION SOUTHEAST THIRD OF
FORECAST AREA WHERE MOISTURE REMAINS IN PLACE TODAY.  WITH LOSS OF
DAYTIME HEATING AND SYSTEM SLIPPING EAST...ACTIVITY SHOULD BE GONE
BY MIDNIGHT.  WITH JUST MINIMAL LOW LEVEL MOISTURE LEFT FOR THURSDAY
OVER SOUTHEAST SECTIONS...SHOULD SEE NOTHING MORE THAN ISOLATED
CONVECTION IN THE TERRAIN AREAS.  OTHER MINOR CONCERN IS POTENTIAL
FOR ISOLATED CONVECTION ELEVATION AREAS OF NORTHERN UTAH AND
SOUTHWEST WYOMING THURSDAY EVENING AS BASE OF 5H TROUGH SLIDES
ACROSS IDAHO AND WYOMING. CONFIDENCE TOO LOW FOR INCLUSION AT THIS
POINT.  FRIDAY AND MUCH OF SATURDAY SHOULD BE DRY...WITH ISOLATED
CONVECTION POSSIBLE SATURDAY EVENING AND SUNDAY ACROSS SOUTHERN UTAH
AS MOISTURE SPREADS NORTH.

COOLED TEMPERATURES DOWN A BIT FOR THURSDAY NIGHT AND FRIDAY BEHIND
FRONT DROPPING ACROSS REGION.  OTHERWISE...NO MAJOR CHANGES TO
TEMPERATURES THIS PACKAGE.

&&

.FIRE WEATHER...STRONG WINDS COMBINED WITH ALREADY LOW RH VALUES ARE
PRODUCING CRITICAL FIRE WEATHER CONDITIONS OVER PARTS OF NORTHERN
AND NORTHWESTERN UTAH THIS AFTERNOON. WINDS ARE ALSO BREEZY OVER
PARTS OF SOUTHWEST UTAH...BUT SO FAR RELATIVE HUMIDITIES REMAIN TOO
HIGH TO PRODUCE RED FLAG CONDITIONS. RED FLAG WARNING REMAINS IN
EFFECT FOR NORTHERN AND WESTERN UTAH UNTIL 10 THIS EVENING.

DRY COOL FRONT PASSES THROUGH NORTHERN UTAH TONIGHT AND EARLY
TOMORROW BEFORE STALLING OVER CENTRAL UTAH. WINDS WILL DECREASE
BEHIND THE FRONT...BUT ARE EXPECTED TO BE STRONG TOMORROW OVER WEST
CENTRAL AND SOUTHWEST UTAH AHEAD OF THE FRONT. THE AIRMASS WILL BE
DRIER OVER THE AREA TOMORROW...THOUGH RELATIVE HUMIDITIES WILL BE
MARGINAL. FOR NOW...HAVE ISSUED A FIRE WEATHER WATCH. AIRMASS
REMAINS GENERALLY DRY AND STABLE ON FRIDAY...WITH WINDS DECREASING
ACROSS THE FIRE DISTRICT.

&&

.AVIATION...SLC TAF COVERS ALL CONCERNS.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...

UT...RED FLAG WARNING FOR BREEZY WINDS COMBINED WITH LOW RH FOR ALL
     OF WESTERN UTAH AND THE NORTHERN WASATCH MOUNTAINS UNTIL 10 PM
     FOR FIRE ZONES 420-423-426-434-435-437-439.
     FIRE WEATHER WATCH FOR STRONG WINDS AND LOW RELATIVE
HUMIDITY         FROM THURSDAY MORNING THROUGH THURSDAY
EVENING                       FOR FIRE ZONES 434-345-437-439.
WY...NONE.

&&

PUBLIC...BARJENBRUCH
FIRE...TRAPHAGAN
AVIATION...COY

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
535 AM MDT WED AUG 16 2006

UTZ001>021-WYZ021-171300-
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-
CENTRAL AND SOUTHWEST MOUNTAINS-HENRY MOUNTAINS-
UTAHS DIXIE AND ZION NATIONAL PARK-SOUTH CENTRAL UTAH-
GLEN CANYON RECREATION AREA/LAKE POWELL-SOUTHWEST WYOMING-
535 AM MDT WED AUG 16 2006

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

.DAY ONE...TODAY AND TONIGHT

DRIER AIR HAS SPREAD OVER WESTERN PORTIONS OF THE OUTLOOK AREA
WHILE A MOIST AIRMASS REMAINS OVER THE EAST. BREEZY SOUTH WINDS
WILL COMBINE WITH VERY LOW RELATIVE HUMIDITY TODAY AND THIS
EVENING TO CREATE SEVERE FIRE WEATHER CONDITONS...PARTICULARLY FOR
THE WESTERN VALLEYS OF UTAH AND FOR THE UPPER BEAR RIVER VALLEY OF
RICH COUNTY IN NORTHERN UTAH. A RED FLAG WARNING HAS BEEN ISSUED
FOR WILDLAND FIRE FIGHTERS.

THUNDERSTORMS WILL DEVELOP AGAIN TODAY OVER THE UTAH MOUNTAINS AND
OVER EASTERN PORTIONS OF UTAH...BRINGING FREQUENT LIGHTNING AND
BRIEF HEAVY RAIN TO THE AREA.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

WINDS WILL DECREASE OVER NORTHWEST UTAH BUT WILL REMAIN BREEZY
THROUGH THURSDAY FOR THE SOUTHWEST VALLEYS AND HIGHER ELEVATIONS OF
THE OUTLOOK AREA. THE RED FLAG WARNING MAY NEED TO BE EXTENDED
THROUGH THURSDAY FOR PARTS OF THE AREA.

.SPOTTER INFORMATION STATEMENT...

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

GIBSON