Severe Thunderstorm Warning 15, NWS Salt Lake City, UT

Issued

Jun 19, 2004, 4:43 PM MDT (22:43 UTC)

Expired

Jun 19, 2004, 5:15 PM MDT

In force

32 min

Issued by

NWS Salt Lake City, UT

Area

Counties, with a storm outline in the text

Counties Bear Lake County, ID, Franklin County, ID, Cache County, UT

The Salt Lake City radar (KMTX), 97 km from the middle of the area, began a volume at 22:45 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 192243
SVRSLC
IDC007-041-UTC005-192315-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
443 PM MDT SAT JUN 19 2004

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN BEAR LAKE COUNTY IN IDAHO
  SOUTHERN FRANKLIN COUNTY IN IDAHO
  THIS INCLUDES THE CITY OF PRESTON
  NORTHERN CACHE COUNTY IN UTAH

* UNTIL 515 PM MDT

* AT 439 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER WESTON...OR ABOUT 10 MILES SOUTHWEST OF
  PRESTON...MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  OVER LEWISTON...8 MILES SOUTH OF PRESTON AT 450 PM MDT
  3 MILES SOUTH OF FRANKLIN AT 455 PM MDT
  3 MILES WEST OF BEAVER MTN AT 515 PM MDT

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 4211 11208 4193 11212 4180 11152 4211 11146

$$

NWS Salt Lake City, UT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 19, 3:30 PM MDT, 1 hour 13 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
330 PM MDT SAT JUN 19 2004

.SYNOPSIS...A WEAK COLD FRONT WILL SLIDE SOUTH THROUGH NORTHERN UTAH
SUNDAY...THEN SETTLE INTO CENTRAL UTAH EARLY NEXT WEEK.  HIGH
PRESSURE ALOFT WILL STRENGTHEN OVER THE REGION BEGINNING TUESDAY.

&&

.DISCUSSION...CONVECTION FIRED UP AS EXPECTED IN THE AREAS OF
GREATEST INSTABILITY OVER CNTRL/NE UTAH...AND ALONG THE UTAH/IDAHO
BORDER.  JET AXIS ACROSS SRN ID THROUGH WRN WY LIKELY HELPING THE
CONVECTION UP NORTH.  THE ACTIVITY OVER CNTRL/NE UT FORMED EARLY IN
AN AREA OF LOW/MID LEVEL CONFLUENCE.  SUSPECT MUCH OF THE
CONVECTION WILL DIE OUT THIS EVENING WITH THE LOSS OF SURFACE
HEATING.  WILL HAVE TO WATCH FOR AN EMBEDDED SHORTWAVE THE ETA/GFS
MODELS RIPPLE THROUGH THE FAR NRN ZONES LATE TONIGHT.  LINGERING
LATE NIGHT COULD GEN-UP AGAIN AS THIS FEATURE RACES THROUGH THE
NORTH.

THE UPPER LOW CURRENTLY OVER THE PACIFIC NW STILL PROGGED TO WEAKEN
AND SHEAR OFF TO THE EAST SUNDAY.  AS THIS HAPPENS...HEIGHTS ARE
PROGGED TO DROP A LITTLE BIT OVER THE NRN/CNTRL ZONES WITH A WEAK
SURFACE BOUNDARY DRIFTING INTO CNTRL UTAH BY MONDAY. WILL LIKELY SEE
SOME CONVECTIVE PRECIP ALONG THIS BOUNDARY SUNDAY.  THIS ACTIVITY
MAY PICK UP SOMEWHAT MONDAY AS A LITTLE STRONGER CONVERGENCES
DEVELOPS IN ASSOCIATION WITH THE NEAR 700 MB THERMAL BOUNDARY.

HEIGHTS BEGINNING TO BUILD OVER THE INTERIOR WEST BEGINNING TUESDAY.
RESIDUAL MOISTURE AND DIFFERENTIAL HEATING SHOULD LEAD TO AFTERNOON
AND EVENING THUNDERSTORMS.  THIS TYPE OF ACTIVITY SHOULD CONTINUE AND
INCREASE IN AREAL COVERAGE THROUGH THE BALANCE OF THE WEEK.  TEMPS
WILL CLIMB TO AT OR ABOVE NORMAL MOST LOCATIONS THROUGH MIDWEEK...
THEN LEVEL OFF AS AFTERNOON CLOUDS PUT A CAP ON TEMPS.

.SLC WATCHES/WARNINGS/ADVISORIES...

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

&&

CONGER

Severe Thunderstorm Warnings in Idaho, 2004Severe 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.