Severe Thunderstorm Warning 19, NWS Salt Lake City, UT

Issued

Jul 25, 2002, 8:36 PM MDT (02:36 UTC)

Expired

Jul 25, 2002, 9:00 PM MDT

In force

24 min

Issued by

NWS Salt Lake City, UT

Area

Counties, with a storm outline in the text

County Cache County, UT

The Salt Lake City radar (KMTX), 77 km from the middle of the area, began a volume at 02:37 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.

757 
WUUS55 KSLC 260236
SVRSLC
UTC005-260300-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
834 PM MDT THU JUL 25 2002

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL CACHE COUNTY IN UTAH
  THIS INCLUDES THE CITY OF LOGAN

* UNTIL 900 PM MDT

* AT 826 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER PROVIDENCE...OR ABOUT 3 MILES SOUTH OF
  LOGAN...MOVING EAST AT 25 MPH.

THIS IS AN EXTENSION OF THE WARNING ISSUED EARLIER. VERY LARGE HAIL 
IS POSSIBLE WITH THIS SEVERE THUNDERSTORM AS WELL AS DAMAGING WINDS. 
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 4178 11184 4157 11190 4147 11149 4175 11143

NWS Salt Lake City, UT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 25, 2:30 PM MDT, 6 hours 6 minutes earlier.

UTAH AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
230 PM MDT THU JUL 25 2002

.SYNOPSIS...A MOIST AND UNSTABLE AIRMASS WILL REMAIN OVER THE AREA THIS
EVENING. AN INCREASING WESTERLY FLOW ALOFT WILL HELP DRY OUT THE AREA
FOR FRIDAY AND THE WEEKEND.

.DISCUSSION...CONVECTION HAVING A HARD TIME GETTING GOING UNDER
SUBSIDENCE FROM LAST NIGHTS SHORTWAVES.  STILL EXPECT IT TO DEVELOP TO
SCATTERED COVERAGE IN THE LATE AFTERNOON/EVENING HOURS.  SHORTWAVE
MOVING THROUGH EASTERN OREGON WILL ALSO PUSH THE LOBE THAT EXTENDS FORM
EASTERN ID INTO CENTRAL NV ACROSS THE NORTHERN/CENTRAL SECTIONS OF THE
AREA TONIGHT.  18Z ETA SHOWS QUITE A BIT OF ACTIVITY CONTINUING WITH
THIS IMPULSE THROUGHOUT THE NIGHT.  SO ALTHOUGH WILL WAIT UNTIL ISSUE
TIME TO DECIDE FOR SURE ON EVENING POPS EXPECT TO NOT CHANGE TOO MUCH
FOR TONIGHT AND TO REMOVE ANY EVENING REFERENCES FOR THE NORTHERN 2/3
OF THE AREA.  EXPECT THE MOUNTAINS TO GENERATE SCATTERED ACTIVITY
AGAIN TOMORROW BEFORE DRYING SPREADS IN.

A NORTHERN BRANCH SHORTWAVE PUSHES ACROSS MOST OF THE AREA LATE
SATURDAY NIGHT/SUNDAY.  IT MAY PROVIDE ENOUGH HELP TO TRIGGER SOME
LIMITED CONVECTION OVER THE NORTHERN MOUNTAINS.  WILL KEEP A SLIGHT
CHANCE IN OUR ID/WY BORDER ZONES TO REFLECT THIS.  OTHERWISE THE MAIN
EFFECT WILL BE A LITTLE ADDITIONAL COOLING FOR SUNDAY INTO MONDAY.  THE
12Z PSEUDO AVN DATA FROM THE NAVY NOGAPS LOOKS LIKE THIS WOULD BE A
LITTLE SHARPER AND POSSIBLY A BIT SLOWER TROF.  BUT LITTLE CONFIDENCE
IN THAT TREND GIVEN THAT THE NOGAPS PERFORMANCE HERE HASNT BEEN VERY
GOOD.

ONCE THAT SHORTWAVE GOES WE STAY IN A DRY NORTHWEST FLOW WITH A HIGH
CENTER TO OUR WEST FOR A COUPLE OF DAYS.  THE HIGH TENDS TO DRIFT EAST
BY MIDWEEK AS ANOTHER SHORTWAVE PUSHES THROUGH THE NORTHERN GULF OF
ALASKA. THAT WILL RESULT IN SLOWLY WARMING TEMPERATURES AND BY LATE
WEDNESDAY OR THURSDAY COULD BE FAR ENOUGH EAST TO LET SOME MOISTURE
START SEEPING BACK IN FROM THE SOUTH.  FOR WILL KEEP THURSDAY DRY SINCE
ANY ACTIVITY THAT MIGHT DEVELOP SHOULD STILL BE QUITE LIMITED.

SLC 3--1 CDC 3--0  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.