Severe Thunderstorm Warning 16, NWS Salt Lake City, UT

000 
WWUS55 KSLC 300412
SVSSLC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1011 PM MDT SUN MAY 29 2005

UTC003-300430-
/O.CON.KSLC.SV.W.0016.000000T0000Z-050530T0430Z/
BOX ELDER UT-
1011 PM MDT SUN MAY 29 2005

...A SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 1030 PM MDT FOR
CENTRAL BOX ELDER COUNTY...

AT 1007 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED 9 MILES WEST OF PROMONTORY...OR ABOUT 26 MILES SOUTH OF
SNOWVILLE...MOVING NORTH AT 20 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  7 MILES WEST OF PROMONTORY BY 1020 PM MDT

LAT...LON 4144 11292 4139 11269 4171 11245 4179 11281

$$
AOT

000 
WWUS55 KSLC 300430
SVSSLC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1028 PM MDT SUN MAY 29 2005

UTC003-300438-
/O.EXP.KSLC.SV.W.0016.000000T0000Z-050530T0430Z/
BOX ELDER UT-
1028 PM MDT SUN MAY 29 2005

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL BOX ELDER COUNTY
EXPIRES AT 1030 PM MDT...

THE THUNDERSTORM THAT PROMPTED THE SEVERE WARNING HAS WEAKENED.
ANOTHER STRONG THUNDERSTORM WILL FOLLOW A SIMILAR PATH ACROSS
THE GREAT SALT LAKE AND MOVE NEAR PROMOTORY BY 11 PM.

LAT...LON 4144 11292 4139 11269 4171 11245 4179 11281

$$

AOT

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
830 PM MDT SUN MAY 29 2005

.SYNOPSIS...AN UPPER LEVEL LOW PRESSURE SYSTEM OVER NORTHERN NEVADA
WILL MOVE EAST ACROSS UTAH TONIGHT BEFORE EXITING THE AREA LATE
MONDAY. HIGH PRESSURE ALOFT WILL MOVE IN BRIEFLY FOR TUESDAY PRIOR
TO THE ARRIVAL OF ANOTHER UPPER LEVEL TROUGH BY MIDWEEK WHICH WILL
SETTLE OVER UTAH THE REMAINDER OF THE WEEK.

&&

.DISCUSSION...STRONG COLD FRONT MOVING THROUGH NORTHWEST UTAH WITH
POST FRONTAL WINDS OVER 60 MPH SOME AREAS OF THE DESERTS. COLD FRONT
IS APPROACHING THE EAST SIDE OF DUGWAY COMPLEX THIS HOUR. ISSUED
HIGH WIND WARNING EARLIER FOR FRONTAL WINDS. SEVERE THUNDERSTORMS
HAVE DEVELOPED THIS REGION AS WELL WITH MAIN THREAT HAIL BUT STORMS
HAVE BECOME SUPERCELLS WITH GOOD ROTATION. TORNADO REPORTED JUST TO
THE NORTH OVER THE IDAHO BORDER. STRONG CELL NEAR ROSEBUD HAS DUMPED
HALF INCH SO FAR. OTHER STORMS HAVE FORMED IN NORTHEAST UTAH...WHILE
EARLIER THIS AFTERNOON A WARM FRONT AND UPPER DIVERGENCE MAX
PRODUCED WETTING THUNDERSTORMS AND WIND GUSTS TO 47 MPH AT ROOSEVELT
IN THE UINTAH BASIN. IN THE SOUTH MUCH LESS ACTIVITY TODAY WITH
DRIER AND SLIGHTLY COOLER GUSTY SOUTHWEST FLOW.

SHOWERS AND THUNDERSTORMS WILL FILL IN OVER THE GSL AND NORTHERN
UTAH THIS EVENING AND OVERNIGHT WITH STRONG UPPER DIVERGENCE IN THE
NORTHEAST SIDE OF THE UPPER LOW AND JET MAX ROUNDING ITS BASE. 700
MB LOW AND STRONG THERMAL GRADIENT NOW MOVING INTO FAR NORTHWEST
UTAH WILL SLIDE ACROSS THE GSL EARLY MONDAY AND PRODUCE WIDESPREAD
PRECIPITATION. THOUGH THE THREAT FOR SEVERE WILL DECREASE TONIGHT
POST FRONTAL WINDS WITH THE TIGHT SURFACE GRADIENT IN NORTHWEST UTAH
WILL CONTINUE AND LOCALLY HEAVY RAINFALL WILL DEVELOP TONIGHT AND
CONTINUE MONDAY MORNING ALONG THE WASATCH FRONT. FOCUS WILL SHIFT TO
INCREASED FLOWS IN THE CREEKS AND RIVERS THAT ARE SWOLLEN FROM THE
WARM TEMPERATURES PAST COUPLE DAYS. UPPER LOW PROGGED TO DIG INTO
SOUTHERN UTAH MONDAY SO SHOWERS WILL MOVE INTO SOUTH CENTRAL UTAH
AND MOIST CONVECTION FOR SOUTHEAST UTAH AND THE SAN RAFAEL SWELL FOR
MONDAY AFTERNOON. 700 MB TEMPS AS COLD AS 1C MONDAY MORNING SLOWLY
RECOVER IN THE AFTERNOON.

WE REMAIN IN WEAK CYCLONIC FLOW ON TUESDAY WITH SHORT WAVE PASSAGE
THROUGH WYOMING WITH SUFFICIENT INSTABILITY FOR SOME SHOWERS IN THE
FAR NORTH BUT WARMER TEMPERATURES ALOFT STABILIZE AIR MASS. WARM AIR
ADVECTION IN SOUTHWEST FLOW INCREASES TUESDAY NIGHT UNDER A SHORT
WAVE RIDGE AHEAD OF THE NEXT SHORT WAVE IN THE WESTERLIES. THIS
PROGGED TO SEND ANOTHER COLD FRONT ACROSS NORTHERN UTAH ON
WEDNESDAY. THE MEAN UPPER LEVEL TROUGH LINGERS OVER THE NORTHERN
GREAT BASIN AND KEEPS THE NORTHERN AREAS BELOW NORMAL WITH SOME
SHOWERS THRU THE REST OF THE WEEK PER LATEST GFS...ECMWF AND UKMET.
NEXT CLOSED LOW OR PORTION OF THIS SYSTEM IS PROGGED TO DRIFT ACROSS
VANCOUVER ISLAND AND INTO THE NORTHERN GREAT BASIN NEXT WEEKEND.

&&

.HYDRO...COOLER TEMPERATURES THIS WEEK...ESPECIALLY OVER THE NRN
HALF OF THE STATE. STILL SOME CONCERN OVER LOGAN RIVER DRAINAGE AS
THE POTENTIAL EXISTS FOR SIGNIFICANT PRECIP WITH THE STORM. RAINFALL
TOTALS COULD EXCEED 1 INCH IN THE NORTHERN UTAH AREAS BY MONDAY
MIDDAY. TEMPS WILL WARM UP SOME ON TUESDAY NEXT COLD FRONT SCHEDULED
FOR WEDNESDAY.  THIS SYSTEM WILL BE COLDER THAN THE CURRENT FRONT
AND WITH LESS PRECIP. TEMPS WILL REMAIN ON THE COOL SIDE HEADING
INTO THE WEEKEND.

&&

.AVIATION...TIMING OF FRONT MAIN ISSUE...NOW MOVING INTO THE EAST
SIDE OF DUGWAY REGION. WE ARE LOOKING AT 04-05Z FOR THIS ARRIVAL AND
WIND SHIFT. SHOWERS AND THUNDERSTORMS PROBABLY WILL DEVELOP ALONG
THIS FRONT WITH POTENTIAL FOR OUTFLOWS. MOST SIGNIFICANT RAINS WILL
BE AFTER MIDNIGHT.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...FLOOD WARNING UPPER SEVIER RIVER.
     HIGH WIND WARNING FOR NORTHWEST DESERTS THIS EVENING.
     FLOOD WATCH UPPER WEBER RIVER.
     FLOOD WATCH LOGAN RIVER IN CACHE COUNTY.
     FLOOD WATCH AMERICAN FORK AND DRY CREEKS IN UTAH COUNTY.
     FLOOD WATCH COTTONWOOD CREEKS IN SALT LAKE COUNTY
     FLOOD WATCH FOR RIVERS DRAINING THE UINTA SOUTH SLOPE.
WY...NONE.

TARDY

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
645 AM MDT SUN MAY 29 2005

UTZ001>008-301300-
CACHE VALLEY/UTAH PORTION-GREAT SALT LAKE DESERT AND MOUNTAINS-
NORTHERN WASATCH FRONT-SALT LAKE AND TOOELE VALLEYS-SOUTHERN WASATCH
FRONT-WASATCH MOUNTAIN VALLEYS-WASATCH MOUNTAINS I-80 NORTH-WASATCH
MOUNTAINS SOUTH OF I-80-
645 AM MDT SUN MAY 29 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST UTAH.

.DAY ONE... TODAY

A STORM SYSTEM MOVING INTO NORTHEAST NEVADA LATE THIS AFTERNOON WILL
PRODUCE NUMEROUS SHOWERS AND THUNDERSTORMS OVER NORTHWEST UTAH.
SOME STRONG THUNDERSTORMS ARE POSSIBLE...ESPECIALLY OVER BOX ELDER
AND TOOELE COUNTIES LATE THIS AFTERNOON AND EVENING.

RIVERS AND STREAMS AHEAD OF THE STORM WILL CONTINUE TO RUN HIGH.
FLOOD WATCHES ARE IN EFFECT FOR SOME OF THE HIGHER FLOWING RIVERS
AND STREAMS ON NORTHWEST UTAH.  SEE THE LATEST FLOOD WATCHES AND
STATEMENTS FOR DETAILS.

.DAYS TWO THROUGH SEVEN... MONDAY THROUGH SATURDAY

LOCALLY HEAVY RAINS ARE POSSIBLE NEAR THE IDAHO BORDER ON
MONDAY.  COOLER TEMPERATURES WILL SETTLE OVER THE AREA THROUGH THIS
WEEK...AND INTO THE WEEKEND.  THESE COOLER TEMPERATURES WILL SLOW
THE SNOWMELT OVER THE HIGH COUNTRY...ALLEVIATING SOME OF THE
FLOODING THREAT FROM SNOWMELT RUNOFF.

UTZ009>021-WYZ021-301300-
CASTLE COUNTRY-CENTRAL AND SOUTHWEST MOUNTAINS-GLEN CANYON RECREATION
AREA/LAKE POWELL-HENRY MOUNTAINS-SAN RAFAEL SWELL-SANPETE/SEVIER
VALLEYS-SOUTH CENTRAL UTAH-SOUTHWEST UTAH-SOUTHWEST WYOMING-UTAHS
DIXIE AND ZION NATIONAL PARK-WASATCH PLATEAU/BOOK CLIFFS-WEST CENTRAL
UTAH-WESTERN UINTA BASIN-WESTERN UINTA MOUNTAINS-
645 AM MDT SUN MAY 29 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHERN AND EASTERN UTAH...
AND FOR EXTREME SOUTHWEST WYOMING.

.DAY ONE... TODAY

WARMER TEMPERATURES WILL MAINTAIN THE RAPID SNOW MELT ACROSS THE
REGION. MANY CREEKS AND RIVERS ARE FLOWING AT HIGH LEVELS IN UTAH...
WITH SOME FLOODING CONTINUING. REFER TO THE LATEST FLOOD PRODUCTS FOR
DETAILS ON CURRENT AND EXPECTED FLOODING.

.DAYS TWO THROUGH SEVEN... MONDAY THROUGH SATURDAY

COOLER TEMPERATURES WILL SLOW THE SNOW MELT AT THE HIGHER ELEVATIONS
DURING THE WEEK.  RIVERS AND STREAMS WILL CONTINUE TO RUN HIGH...
WITH SOME AREAS OF FLOODING POSSIBLE OR CONTINUING ALONG THE SEVIER
RIVER. FOLLOW THE LATEST FLOOD PRODUCTS FOR DETAILS ON ANY FLOODING.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
646 PM MDT SUN MAY 29 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0615 PM     NON-TSTM WND GST WENDOVER                40.74N 114.02W
05/29/2005  63 MPH           TOOELE             UT   AWOS

&&

ATARDY