Severe Thunderstorm Warning 78, NWS Salt Lake City, UT

000 
WWUS55 KSLC 052022
SVSSLC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
220 PM MDT WED SEP 5 2007

UTC029-033-043-WYC041-052045-
/O.CON.KSLC.SV.W.0078.000000T0000Z-070905T2045Z/
RICH UT-UINTA WY-SUMMIT UT-MORGAN UT-
220 PM MDT WED SEP 5 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 245 PM MDT
FOR NORTHEASTERN MORGAN...NORTH CENTRAL SUMMIT...WESTERN UINTA AND
SOUTHEASTERN RICH COUNTIES...

AT 217 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER
SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM 17 MILES NORTHEAST OF ALMY
TO 6 MILES NORTH OF ALTAMONT TO 13 MILES SOUTH OF WAHSATCH...MOVING
NORTHEAST AT 45 MPH.

THIS STORM PRODUCED QUARTER SIZE HAIL AS IT PASSED THE EVANSTON PORT 
OF ENTRY ALONG INTERSTATE 80. 

SEVERE THUNDERSTORMS WILL BE NEAR...
  ALTAMONT BY 230 PM MDT...
  RAGEN...LEROY AND PIEDMONT BY 245 PM MDT...

LAT...LON 4131 11135 4100 11105 4110 11054 4158 11061
      4158 11105

$$

SEAMAN

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1017 AM MDT WED SEP 5 2007

.SYNOPSIS...A STRONG PACIFIC SYSTEM WILL MOVE ACROSS THE
INTERMOUNTAIN REGION TODAY. THE ASSOCIATED COLD FRONT WILL MOVE
ACROSS NORTHERN UTAH THIS AFTERNOON AND INTO SOUTHERN UTAH
TONIGHT. A COOLER AIRMASS WILL SPREAD ACROSS UTAH FOR LATE IN THE
WEEK.

&&

.DISCUSSION...A VERY BUSY DAY SETTING UP ACROSS MUCH OF THE
REGION. ISOLATED TO SCATTERED SHOWERS AND THUNDERSTORMS ARE
OCCURRING OVER THE NORTHWESTERN AND EASTERN PORTIONS OF UTAH AS
WELL AS EXTREME SOUTHWESTERN WYOMING. COVERAGE IS EXPECTED TO
INCREASE FAIRLY QUICKLY OVER THE NEXT SEVERAL HOURS...WITH THE
MAIN FOCUS OF ANY SEVERE WEATHER TODAY FROM THE WASATCH FRONT
SOUTH AND EAST.

VERY HIGH VALUES OF 0-6 KM SHEAR...UPWARDS OF 60 TO 70
KTS...EXIST ACROSS NORTHWEST UTAH. THE 12Z SOUNDING AT KSLC WAS
ALREADY INDICATING OVER 500 J/KG OF CAPE THIS MORNING. THIS WILL
ONLY INCREASE WITH CLEAR SKIES OVER PORTIONS OF NORTHERN AND
CENTRAL UTAH THIS MORNING. A COLD FRONT CURRENTLY STRETCHES ACROSS
UTAH FROM NEAR LOGAN TO NEAR DELTA. WITH STRONG LINEAR FORCING
ASSOCIATED WITH THIS FRONT...EXPECT CONVECTION WILL EVENTUALLY
DEVELOP INTO A LINEAR FEATURE AS THE AFTERNOON PROGRESSES. THE
MAIN THREAT WILL BE GUSTY WINDS THIS AFTERNOON...ALTHOUGH HAIL IS
CERTAINLY POSSIBLE.

&&

.AVIATION...NORTHERLY SURFACE WINDS SHOULD PERSIST AT KSLC THROUGH
THE AFTERNOON HOURS. TERMINAL SHOULD REMAIN BETWEEN TWO ACTIVE AREAS
OF THUNDERSTORMS THROUGH ABOUT 18Z OR SO. DAYTIME HEATING SHOULD
RESULT IN WIDESPREAD SHOWERS AND THUNDERSTORMS THROUGHOUT THE
AFTERNOON HOURS. THE MOST LIKELY TIME FOR THESE STORMS TO IMPACT THE
TERMINAL WOULD BE BETWEEN 20Z AND 00Z.

&&

.FIRE WEATHER...PACIFIC STORM SYSTEM WILL CONTINUE TO IMPACT THE
DISTRICT TODAY. ABUNDANT MOISTURE AHEAD OF THIS SYSTEM REMAINS
ACROSS THE REGION...AND WILL ALLOW FOR WIDESPREAD SHOWERS AND
THUNDERSTORMS THIS AFTERNOON. DRIER AIR ACROSS NEVADA EXPECTED TO
SPREAD EAST INTO FAR SOUTHWEST UT THIS AFTERNOON. WILL LEAVE RED
FLAG WARNING IN EFFECT FOR ZONES 435...437 AND 439...BUT WILL DROP
WARNING ELSEWHERE AS RH SHOULD REMAIN TOO HIGH.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...RED FLAG WARNING UNTIL 9 PM WEDNESDAY FOR FIRE WEATHER ZONES
435...437 AND 439.

WY...NONE.

&&

PUBLIC...C.SMITH
FIRE WEATHER/AVIATION...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
119 PM MDT WED SEP 5 2007

UTZ001>016-517-518-WYZ021-061930-
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 MOUNTAINS-SOUTHERN MOUNTAINS-SOUTHWEST WYOMING-
119 PM MDT WED SEP 5 2007

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

A POTENT PACIFIC SYSTEM WILL CONTINUE TO IMPACT THE REGION.
SHOWERS AND THUNDERSTORMS WILL BE WIDESPREAD ACROSS MUCH OF UTAH
THIS AFTERNOON. STRONGER STORMS ARE CAPABLE OF PRODUCING DAMAGING
WINDS AND LARGE HAIL. IN ADDITION...HEAVY RAIN AND LOCALIZED
FLOODING ARE POSSIBLE WITH THE STRONGER SHOWERS AND THUNDERSTORMS.
STAY TUNED TO NOAA WEATHER RADIO AND LOCAL BROADCAST NETWORKS FOR
THE LATEST WEATHER INFORMATION.

A COLD FRONT WILL MOVE INTO THE AREA TONIGHT BRINGING COOLER AIR
FOR THE REMAINDER OF THE WEEK.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

A COOL AIRMASS WILL REMAIN IN PLACE INTO THE WEEKEND. NO
SIGNIFICANT STORMS ARE FORECAST.

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

UTZ019>021-061930-
UTAHS DIXIE AND ZION NATIONAL PARK-SOUTH CENTRAL UTAH-
GLEN CANYON RECREATION AREA/LAKE POWELL-
119 PM MDT WED SEP 5 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHERN UTAH.

.DAY ONE...TODAY AND TONIGHT

STRONG WINDS AND DRY CONDITIONS ARE EXPECTED TO RESULT IN CRITICAL
FIRE WEATHER CONDITIONS FOR PORTIONS OF SOUTHWEST AND SOUTH CENTRAL
UTAH TODAY. A RED FLAG WARNING IS IN EFFECT. IN
ADDITION...THUNDERSTORMS CURRENTLY DEVELOPING THIS AFTERNOON MAY
PRODUCE GUSTY WINDS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

COOLER AIR WILL MOVE INTO THE REGION. HOWEVER...THE THREAT FOR
ISOLATED THUNDERSTORMS REMAINS THROUGH THE REST OF THE
WEEK...PRIMARILY OVER HIGHER TERRAIN.

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

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