Severe Thunderstorm Warning 27, NWS Salt Lake City, UT

Issued

Jun 30, 2004, 2:48 PM MDT (20:48 UTC)

Expired

Jun 30, 2004, 3:15 PM MDT

In force

27 min

Issued by

NWS Salt Lake City, UT

Area

Counties, with a storm outline in the text

County Emery County, UT

The Grand Junction radar (KGJX), 221 km from the middle of the area, began a volume at 20:50 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.

211 
WUUS55 KSLC 302048
SVRSLC
UTC015-302115-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
246 PM MDT WED JUN 30 2004

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

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

* UNTIL 315 PM MDT

* AT 237 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER CENTRAL EMERY COUNTY...OR ABOUT 33 MILES
  WEST OF GREEN RIVER...MOVING NORTH AT 5 MPH.

DOPPLER RADAR INDICATES A SLOW MOVING THUNDERSTORM OVER I-70 33 
MILES WEST OF GREEN RIVER.  THIS STORM MAY CONTAIN LARGE HAIL AND 
VERY HEAVY RAINFALL.

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 3901 11085 3882 11086 3880 11063 3901 11063

$$

NWS Salt Lake City, UT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 30, 10:20 AM MDT, 4 hours 28 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
1020 AM MDT WED JUN 30 2004

.SYNOPSIS...SOUTHWEST FLOW WILL BRING DRYING FROM THE SOUTHWEST TO
THE FORECAST AREA TODAY THROUGH THURSDAY. A WEAK UPPER LEVEL
DISTURBANCE WILL APPROACH THE AREA FRIDAY.

&&

.DISCUSSION...GOES PRECIPITABLE WATER IMAGERY CONTINUES TO SHOW
DRYING UNDER WAY FROM THE SOUTHWEST THIS MORNING WITH MOISTURE
REMAINING GENERALLY NORTHEAST OF ABOUT A PAGE TO MILFORD LINE.

SOME CONCERN THAT UPPER CIRCULATION OVER SRN CA WILL SPREAD MOISTURE
INTO THE SOUTHWEST AT HIGHER LEVELS THIS AFTERNOON AND WITH DEEP
MIXING...THIS COULD KICK OFF ISOLATED HIGH BASED CONVECTION. WILL
LET CURRENT DRY FORECAST RIDE FOR NOW BUT WILL MONITOR FOR POSSIBLE
UPDATES.

THIS FEATURE RIDES NORTH TO OUR WEST TONIGHT BUT A LOBE EXTENDING
EASTWARD FROM IT COULD KEEP ISOLATED CONVECTION ACTIVE OVER THE
NORTH THROUGH THE NIGHT.

THURSDAY SHOULD BE THE DRIEST DAY BUT STILL ISOLATED CONVECTION
WILL PROBABLY DEVELOP OVER THE HIGHER TERRAIN CENTRAL AND NORTH.
FRIDAY THE PACIFIC UPPER TROF STARTS TO EDGE EASTWARD AND MOISTURE
STARTS TO INCREASE AGAIN FROM THE WEST.

LATEST GFS STILL OPENS THIS TROF UP AND SLIDES IT ACROSS UT OVER
THE WEEKEND WITH ADEQUATE MOISTURE FOR SCATTERED CONVECTION.

NO UPDATES PLANNED AT THIS TIME.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...

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

&&

WILENSKY

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.