Alert archive / Utah / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 13, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this severe thunderstorm warning at Jun 22, 1993, 12:27 AM MDT for Box Elder County, Tooele County, Utah. It was in force for 63 min.
The area
The counties it named.
The facts
- Issued
- Jun 22, 1993, 12:27 AM MDT (06:27 UTC)
- Expired
- Jun 22, 1993, 1:30 AM MDT
- In force
- 63 min
- Issued by
- NWS Salt Lake City, UT
- Area
- Whole counties
Counties Box Elder County, UT, Tooele County, UT
The nearest sounding before it
Salt Lake City I, UT (KSLC), launched 00:00Z, 6.5 hours before the alert went out and 104 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 63 J/kg
- Mixed-layer CIN
- -74 J/kg
- Mixed-layer LCL
- 2821 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 92 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSLC 220634 RRA SVRSLC UTC003-045-220730- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SALT LAKE CITY UT 1227 AM MDT TUE JUN 22 1993 THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 130 AM MDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTHWEST UTAH ...WESTERN BOX ELDER COUNTY...WESTERN TOOELE COUNTY AT 1215 AM A THUNDERSTORM WITH HEAVY RAIN IN THE WENDOVER AREA PRODUCED A WIND GUST TO 70 MPH. THUNDERSTORMS IN THE AREA ARE MOVING TOWARDS THE NORTHEAST AT 30 MPH. PEOPLE TRAVELING ACROSS I-80 IN TOOELE COUNTY SHOULD EXPECT AREAS OF STRONG THUNDERSTORM WINDS OF 70 MPH OR GREATER UNTIL 130 AM THIS MORNING. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE INDOORS WHEN THUNDERSTORMS APPROACH. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. &
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Jun 21, 8:07 PM MDT, 4 hours 20 minutes before
UTZ001>003-010-220500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 810 PM MDT MON JUN 21 1993 ...STRONG THUNDERSTORMS ENTERING EXTREME NORTHWEST UTAH... STRONG THUNDERSTORMS OVER NORTHEAST NEVADA FROM LATE THIS AFTERNOON WERE NOW MOVING INTO EXTREME NORTHWEST UTAH. THE THUNDERSTORMS IN UTAH EXTEND FROM NEAR WENDOVER NORTH NORTHEAST INTO WESTERN BOX ELDER COUNTY AND WERE MOVING NORTH AT 30 MPH. STRONG "MICROBURST" WIND GUSTS...CLOUD-TO-GROUND LIGHTNING AND LIGHT RAIN HAVE BEEN REPORTED WITH MOST STORMS. AT WENDOVER...A WIND GUST HIT 55 MPH AROUND 730 PM MDT THIS EVENING. THUNDERSTORMS WILL SPREAD OVER PORTIONS OF WESTERN UTAH TONIGHT... THOUGH MOST OF THE ACTIVITY WILL BE OVER THE NORTHERN HALF OF THE AREA. THESE STORMS WILL PACK STRONG GUSTY WINDS...AND LITTLE OR NO RAIN. IF THESE STORMS APPROACH YOUR AREA...SEEK SHELTER IMMEDIATELY.
Special weather statement, Jun 21, 8:10 PM MDT, 4 hours 17 minutes before
UTZ001>003-010-220500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 810 PM MDT MON JUN 21 1993 ...STRONG THUNDERSTORMS ENTERING EXTREME NORTHWEST UTAH... STRONG THUNDERSTORMS OVER NORTHEAST NEVADA FROM LATE THIS AFTERNOON WERE NOW MOVING INTO EXTREME NORTHWEST UTAH. THE THUNDERSTORMS IN UTAH EXTEND FROM NEAR WENDOVER NORTH NORTHEAST INTO WESTERN BOX ELDER COUNTY AND WERE MOVING NORTH AT 30 MPH. STRONG "MICROBURST" WIND GUSTS...CLOUD-TO-GROUND LIGHTNING AND LIGHT RAIN HAVE BEEN REPORTED WITH MOST STORMS. AT WENDOVER...A WIND GUST HIT 55 MPH AROUND 730 PM MDT THIS EVENING. THUNDERSTORMS WILL SPREAD OVER PORTIONS OF WESTERN UTAH TONIGHT... THOUGH MOST OF THE ACTIVITY WILL BE OVER THE NORTHERN HALF OF THE AREA. THESE STORMS WILL PACK STRONG GUSTY WINDS...AND LITTLE OR NO RAIN. IF THESE STORMS APPROACH YOUR AREA...SEEK SHELTER IMMEDIATELY. /
Special weather statement, Jun 21, 11:45 PM MDT, 42 minutes before
UTZ002-220800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 1145 PM MDT MON JUN 21 1993 ...STRONG WINDS ALONG I-80 IN EXTREME WESTERN UTAH... STRONG WESTERLY WINDS HAVE DEVELOPED ALONG A STRETCH OF I-80 NEAR THE NEVADA BORDER LATE THIS EVENING. WINDS AT THE WENDOVER AIRPORT WERE SUSTAINED 35-45 MPH WITH GUSTS NEAR 55 MPH. THESE STRONG WINDS RESULTED FROM A COMBINATION OF THUNDERSTORM "MICROBURSTS" AND WESTERLY WINDS BEHIND A SURFACE FRONT THAT MOVED THROUGH DURING THE PAST COUPLE OF HOURS. WINDS WILL BEGIN TO SUBSIDE OVER THE NEXT 1-2 HOURS. EXPECT 15-25 MPH WINDS OUT OF THE WEST ALONG I-80 NEAR WENDOVER THROUGHOUT THE NIGHT AND INTO TUESDAY.
Special weather statement, Jun 21, 11:46 PM MDT, 41 minutes before
UTZ002-220800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 1145 PM MDT MON JUN 21 1993 ...STRONG WINDS ALONG I-80 IN EXTREME WESTERN UTAH... STRONG WESTERLY WINDS HAVE DEVELOPED ALONG A STRETCH OF I-80 NEAR THE NEVADA BORDER LATE THIS EVENING. WINDS AT THE WENDOVER AIRPORT WERE SUSTAINED 35-45 MPH WITH GUSTS NEAR 55 MPH. THESE STRONG WINDS RESULTED FROM A COMBINATION OF THUNDERSTORM "MICROBURSTS" AND WESTERLY WINDS B6EHIND A SURFACE FRONT THAT MOVED THROUGH DURING THE PAST COUPLE OF HOURS. WINDS WILL BEGIN TO SUBSIDE OVER THE NEXT 1-2 HOURS. EXPECT 15-25 MPH WINDS OUT OF THE WEST ALONG I-80 NEAR WENDOVER THROUGHOUT THE NIGHT AND INTO TUESDAY.
Nearby
Severe Thunderstorm Warnings in Utah, 1993Every severe thunderstorm warning in 1993
Sources
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.