Severe Thunderstorm Warning 20, NWS Salt Lake City, UT

Issued

Jul 26, 2002, 2:14 PM MDT (20:14 UTC)

Expired

Jul 26, 2002, 3:00 PM MDT

In force

46 min

Issued by

NWS Salt Lake City, UT

Area

Counties, with a storm outline in the text

County Garfield County, UT

The Cedar City radar (KICX), 167 km from the middle of the area, began a volume at 20:18 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.

566 
WUUS55 KSLC 262014
SVRSLC
UTC017-262100-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
212 PM MDT FRI JUL 26 2002

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL GARFIELD COUNTY IN UTAH

* UNTIL 300 PM MDT

* AT 203 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 30 MILES WEST OF TICABOO...OR ABOUT 22 MILES
  EAST OF ESCALANTE...MOVING EAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  4 MILES NORTHWEST OF TICABOO AT 300 PM MDT

THIS STORM WILL BE APPROACHING THE LAKE POWELL AREA NORTH OF 
BULLFROG MARINA AT 300 PM MDT.  STRONG GUSTY WINDS...LARGE 
HAIL...AND HEAVY RAIN ARE POSSIBLE WITH THIS STORM.

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 3786 11120 3762 11130 3753 11067 3780 11047

NWS Salt Lake City, UT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 26, 10:00 AM MDT, 4 hours 14 minutes earlier.

UTAH AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1000 AM MDT FRI JUL 26 2002

.SYNOPSIS...A WEAK FRONTAL SYSTEM WILL LINGER OVER SOUTHERN UTAH
TODAY THEN DISSIPATE BY SATURDAY MORNING. A DRY AIRMASS WILL SLOWLY
SPREAD ACROSS UTAH TODAY THROUGH THE WEEKEND.

.DISCUSSION...AIRMASS OVER UT STILL QUITE MOIST AND UNSTABLE.  THAT
WILL BE SLOWLY CHANGING FROM THE NORTHWEST AS DRIER MID LEVEL AIR
AND AFTERNOON MIXING TAKE PLACE.  HOWEVER THE SOUTH AND EAST WONT
SEE MUCH OF THIS CHANGE UNTIL TONIGHT/SATURDAY.  AN EAST-WEST JET IS
OVER CENTRAL UT AND WILL BE SLOWLY SAGGING SOUTH.  A WAVE IN THAT
FLOW EVIDENT IN WATER VAPOR IMAGERY AND IS RESPONSIBLE FOR THE
POCKET OF THUNDERSTORMS NEAR U24 AT THIS TIME.  THAT CLUSTER WILL
CLIP THE SOUTHERN WASATCH FRONT...THE SOUTHERN WASATCH
MOUNTAINS...AND THE WASATCH PLATEAU.  EVERYWHERE SOUTH AND EAST OF
THOSE AREAS WILL HAVE SOME DYNAMIC HELP FROM THE JET THROUGH THE
AFTERNOON AND EARLY EVENING.  ALSO SHOULD BE A WEAK LOW LEVEL
CONVERGENCE ACROSS ABOUT CENTRAL UT AS INDICATED AT 700MB LEVEL IN
MODELS. IT EXPANDS SLOWLY SOUTH DURING THE AFTERNOON AND EVENING.

ALL IN ALL THIS SHOULD LEAD TO A RELATIVELY ACTIVE DAY OVER THE
SOUTHERN 2/3 OF UT.  HAVE UPDATED TO INCREASE PROBABILITIES IN AREAS
SOUTH OF A LINE FROM THE WESTERN UINTA MOUNTAINS TO ELY.  HAVE ALSO
ADDED LOCAL HEAVY RAIN AND HAIL AS QUITE LOW LIFTED INDICES AND
LARGE CAPE VALUES FOR THIS AREA SHOULD SUPPORT SOME RELATIVELY
STRONG STORMS AND THE LOW LEVEL CONVERGENCE COULD RESULT IN SOME
TRAINING OF STORMS.  ALSO UPDATED THE FLASH FLOOD POTENTIAL TO PUT A
HIGHER RISK ACROSS MAINLY THE SOUTHEAST BECAUSE OF THE RISK OF
TRAINING. TRENDS IN THE REMAINDER OF THE PACKAGE STILL LOOK OK.

SLC 111 CDC 330  SANDERS

.SLC...NONE

Severe Thunderstorm Warnings in Utah, 2002Every severe thunderstorm warning in 2002

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.