Severe Thunderstorm Warning 52, NWS Salt Lake City, UT

Issued

Aug 3, 2004, 6:06 PM MDT (00:06 UTC)

Expired

Aug 3, 2004, 6:30 PM MDT

In force

24 min

Issued by

NWS Salt Lake City, UT

Area

Counties, with a storm outline in the text

County Sanpete County, UT

The Salt Lake City radar (KMTX), 216 km from the middle of the area, began a volume at 00:07 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

000 
WUUS55 KSLC 040006
SVRSLC
UTC039-040030-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
605 PM MDT TUE AUG 3 2004

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL SANPETE COUNTY IN UTAH
  THIS INCLUDES THE CITY OF MORONI

* UNTIL 630 PM MDT

* AT 557 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 8 MILES WEST OF EPHRAIM...OR ABOUT 9 MILES
  NORTHWEST OF MANTI...MOVING NORTHEAST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  6 MILES NORTHWEST OF EPHRAIM AT 615 PM MDT
  5 MILES SOUTH OF MORONI AT 630 PM MDT

VERY LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. IF YOU ARE
IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A
SUBSTANTIAL SHELTER.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN SALT LAKE CITY.

LAT...LON 3934 11180 3929 11163 3947 11139 3965 11167
      3939 11173

$$

NWS Salt Lake City, UT wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 3, 3:40 PM MDT, 2 hours 26 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
340 PM MDT TUE AUG 3 2004

.SYNOPSIS...A SOUTH TO SOUTHWESTERLY FLOW WILL REMAIN OVER THE AREA
THROUGH FRIDAY...THEN BECOME MORE WESTERLY AS A COLD FRONT DROPS
INTO THE NORTHERN SECTIONS OF UTAH FRIDAY NIGHT AND SATURDAY.  THE
FORECAST AREA WILL GRADUALLY DRY BY THE END OF THE WEEK FROM THE
WEST.

&&

.DISCUSSION...MID LEVEL SHORTWAVE ENTERING FORECAST AREA...COUPLED
WITH AN INCREASE IN MOISTURE AND INSTABILITY...CAPES NEAR 1000
J/KG...HAS LED TO SCATTERED THUNDERSTORMS.  SHORTWAVE SHOULD SUPPORT
CONVECTION INTO THE LATE EVENING HOURS.  A SECOND DISTURBANCE SHOULD
KEEP SOME MID LEVEL CLOUDINESS OVER REGION LATE TONIGHT...ESPECIALLY
NORTHEAST SECTIONS.  SOME DRYING INDICATED FOR WEDNESDAY...SO EXPECT
LITTLE IN THE WAY OF CONVECTION UNTIL LATE AFTERNOON AND
EVENING...WHEN ETA AMD GFS BOTH INDICATE A SHORTWAVE LIFTING NORTH
NORTHEAST ACROSS REGION.  THIS SHORTWAVE SHOULD INITIATE SCATTERED
STORMS.  BEST FORCING WILL BE PRESENT OVER SOUTHEAST SECTIONS OF
FORECAST AREA...WHERE STORMS COULD CONTINUE INTO THE EARLY MORNING
HOURS OF THURSDAY.  AFTERNOON HEATING AND RESIDUAL MOISTURE FAVOR
POPS OVER SOUTHEAST HALF ON THURSDAY AFTERNOON AND EVENING AND IN
THE FAR SOUTHEAST ON FRIDAY.  GFS PROGS A COLD FRONT TO DROP ACROSS
NORTHERN SECTIONS OF FORECAST AREA FRIDAY NIGHT AND SATURDAY.
AIRMASS WILL BE RATHER DRY...SO ONLY POTENTIAL FOR SHOWERS OR STORMS
WILL BE OVER HIGHER ELEVATIONS OF NORTHEAST UTAH.  WILL SEE A
TIGHTER HIGH TEMPERATURE GRADIENT ACROSS FORECAST AREA ON SATURDAY.
5H RIDGE AMPLIFIES OVER THE GREAT BASIN FROM LATE SATURDAY ON...SO
EXPECT WARMING TEMPERATURES AND GENERALLY DRY WEATHER TO PREVAIL.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...

UT...NONE.
WY...NONE.
ID...NONE.

&&

BARJENBRUCH

Severe Thunderstorm Warnings in Utah, 2004Every severe thunderstorm warning in 2004

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.