Severe Thunderstorm Warning 11, NWS Salt Lake City, UT

Issued

Jul 24, 2003, 3:44 PM MDT (21:44 UTC)

Expired

Jul 24, 2003, 4:15 PM MDT

In force

31 min

Issued by

NWS Salt Lake City, UT

Area

Counties, with a storm outline in the text

County Washington County, UT

The Cedar City radar (KICX), 61 km from the middle of the area, began a volume at 21:44 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 242144 CCA
SVRSLC
UTC053-242215-

BULLETIN - EAS ACTIVATION REQUESTED...CORRECTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
341 PM MDT THU JUL 24 2003

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN WASHINGTON COUNTY IN UTAH
  THIS INCLUDES THE CITY OF ST GEORGE

* UNTIL 415 PM MDT

* AT 332 PM MDT(232 PM MST)...NATIONAL WEATHER SERVICE DOPPLER RADAR
  INDICATED A LINE OF SEVERE THUNDERSTORMS FROM 8 MILES SOUTHEAST OF
  LA VERKIN TO 14 MILES SOUTHWEST OF SANTA CLARA...OR FROM 23 MILES
  EAST OF ST GEORGE TO 15 MILES WEST OF ST GEORGE...MOVING NORTH
  AT 20 MPH.

* SEVERE THUNDERSTORMS WILL BE...
OVER RURAL CENTRAL WASHINGTON COUNTY AT 400 PM MDT

THIS STORM IS PRODUCING DAMAGING WINDS OF 60 MPH.

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 3737 11300 3737 11402 3701 11403 3702 11288

NWS Salt Lake City, UT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 24, 2:57 PM MDT, 47 minutes earlier.

UTAH AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
257 PM MDT THU JUL 24 2003

.SYNOPSIS...UTAH WILL BE UNDER A VERY WARM...MOIST AND UNSTABLE
SOUTHWEST FLOW THROUGH THE WEEKEND. THE NORTH WILL STABILIZE EARLY
NEXT WEEK.

.DISCUSSION...MOISTURE CONTINUES TO STREAM NORTH ACROSS THE GREAT
BASIN. UTAH STILL ON THE EASTERN EDGE OF MAIN PLUME BUT THAT WILL
CHANGE AS THE HIGH GIVES WAY TO THE INCOMING SHORTWAVE ENERGY OVER
THE PACIFIC NORTHWEST. TODAY BREEZY SOUTHERLY SURFACE WINDS HAVE
DEVELOPED ACROSS WESTERN UTAH. THIS HAS PUSHED THE LAKE BREEZE FRONT
INTO IDAHO AND WYOMING...STABILIZING THE NORTHERN PORTIONS OF THE
AREA. WEST DESERTS AND EASTERN DESERT BASINS WILL DE-STABILIZE
TONIGHT. RELATIVE HUMIDITY REMAINS HIGH ENOUGH THAT NO FIRE WEATHER
WARNINGS NEEDED EVEN WITH BREEZY WINDS. MEANWHILE AREA OF
THUNDERSTORMS IS MOVING INTO SOUTHWEST UTAH. THESE WILL LIKELY
TRACK NORTH ACROSS WESTERN UTAH THROUGH THE NIGHT. DRYING IN ARIZONA
ON THE WATER VAPOR LOOP INDICATES SHORTWAVE SUPPORT FOR THAT
CLUSTER.

FARTHER NORTHWEST A FRONTAL ZONE HAS DEVELOPED OVER SOUTHEAST OREGON
AND IDAHO. THIS IS PROGGED TO PUSH TO NORTHWEST UTAH FRIDAY EVENING
AND STALL OVER THE LAKE THROUGH SATURDAY MORNING. THIS WILL BE A
FOCUSING MECHANISM TO WORK ON AVAILABLE MOISTURE...SUPPORTED BY WEAK
JET DYNAMICS. RAISED POPS FOR SATURDAY AND SUNDAY AND LOWERED
TEMPERATURES BUT MAY NEED TO FURTHER ADJUST THE GRIDS IN THAT
DIRECTION.

SUNDAY NIGHT THROUGH THURSDAY...HIGH PRESSURE ALOFT REBOUNDS WEST OF
UTAH WITH A NORTHERLY FLOW ALOFT STABILIZING NORTHERN UTAH. DEEP
MOISTURE REMAINS ENTRENCHED IN SOUTHERN UTAH SO NEED TO CONTINUE
WITH DAILY MENTION OF SHOWERS DOWN SOUTH.

SLC 3234 CDC 4222 GIBSON

.SLC...NONE.

IDZ024-025-UTZ001>021-WYZ021-251300-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
700 AM MDT THU JUL 24 2003

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

.DAY ONE... TODAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN... FRIDAY THROUGH WEDNESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

WCJIN-WYSW

Severe Thunderstorm Warnings in Utah, 2003Every severe thunderstorm warning in 2003

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.