Severe Thunderstorm Warning 71, NWS Salt Lake City, UT

Issued

Aug 21, 2001, 3:56 PM MDT (21:56 UTC)

Expired

Aug 21, 2001, 4:45 PM MDT

In force

49 min

Issued by

NWS Salt Lake City, UT

Area

Whole counties; the outline is the Mesonet’s reconstruction

County Emery County, UT

The Grand Junction radar (KGJX), 191 km from the middle of the area, began a volume at 21:58 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.

491 
WUUS55 KSLC 212158
SVRSLC
UTC015-212245-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
356 PM MDT TUE AUG 21 2001

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL EMERY COUNTY IN UTAH

* UNTIL 445 PM MDT

* AT 347 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER SOUTH CENTRAL EMERY COUNTY...OR ABOUT 24
  MILES SOUTHWEST OF GREEN RIVER...MOVING NORTHEAST AT 20 MPH.

LARGE HAIL...INTENSE RAIN AND STRONG DAMAGING WINDS ARE LIKELY WITH 
THIS STORM. TAKE COVER IN A SUBSTANTIAL SHELTER UNTIL THE STORM 
PASSES.

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM MDT
TUESDAY EVENING FOR SOUTHEASTERN UTAH.

LAT...LON 3879 11063 3867 11046 3892 11015 3902 11025
          3908 11032

NWS Salt Lake City, UT wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 21, 2:40 PM MDT, 1 hour 16 minutes earlier.

UTAH AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
240 PM MDT TUE AUG 21 2001

SYNOPSIS...A MOIST AND UNSTABLE AIR MASS OVER UTAH TONIGHT WILL
PRODUCE WIDESPREAD SHOWERS AND THUNDERSTORMS THIS EVENING.  SOME OF
THE THUNDERSTORMS COULD BE SEVERE.  DRIER AND MORE STABLE AIR WILL
SPREAD ACROSS THE STATE WEDNESDAY AND THURSDAY.

DISCUSSION...FOCUS REMAINS PRIMARILY ON POTENTIAL SEVERE THIS
EVENING.  WATCH BOX JUST ISSUED THROUGH 03Z AND LOOKS GOOD.  AT
LEAST A SMALL CHANCE OF STRONG STORMS MAKING IT INTO THE OGDEN AREA
BUT THE BOX COVERS THE MORE LIKELY AREAS.

BY WEDNESDAY MORNING THE TROF SHOULD BE ABOUT CENTERED OVER UT AND
CONTINUING SLOWLY EAST.  THAT SHOULD SUPRESS ACTIVITY IN THE WEST
BUT MAY STILL ALLOW LIMITED CONVECTIN OVER THE MOUNTAINS AND EASTERN
PORTION OF OUR AREA TOMORROW.  AFTER THAT IT WILL BE TOO DRY AND
STABLE FOR ANY SIGNIFICANT THREAT INTO THE WEEKEND.

IN THE EXTENDED WE WILL INTRODUCE A SLIGHT CHANCE OF THUNDERSTORMS
INTO THE MOUNTAINS ZONES FROM SUNDAY ON WITH SOME MOSTLY HIGH LEVEL
MOISTURE FORECAST TO RETURN TO THE AREA.  TEMPERATURES SHOULD BE
NEAR SEASONAL NORMS THROUGH FRIDAY THEN BEGIN WARMING SAT TO BE
ABOUT 5 ABOVE NORMAL MONDAY-TUESDAY.

SLC 7--0 CDC 3--0 SANDERS

.SLC...SEVERE THUNDERSTORM WATCH UNTIL 03Z.

Severe Thunderstorm Warnings in Utah, 2001Every severe thunderstorm warning in 2001

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.