Alert archive / Utah / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 2, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this severe thunderstorm warning at Jul 1, 1990, 7:00 PM MDT for Davis County, Salt Lake County, Tooele County, Utah. It was in force for 2 hr.
The area
The counties it named.
The facts
- Issued
- Jul 1, 1990, 7:00 PM MDT (01:00 UTC)
- Expired
- Jul 1, 1990, 9:00 PM MDT
- In force
- 2 hr
- Issued by
- NWS Salt Lake City, UT
- Area
- Whole counties
Counties Davis County, UT, Salt Lake County, UT, Tooele County, UT
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Salt Lake City I, UT (KSLC), launched 00:00Z, 1.0 hours before the alert went out and 42 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
- 130 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 3711 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 44 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 020110 COR SVRSLC UTC011-035-045-020300- BULLETIN - IMMEDIATE BROADCAST REQUESTED HIGH WIND WARNING NATIONAL WEATHER SERVICE SALT LAKE CITY UT 700 PM MDT SUN JUL 1 1990 THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY HAS ISSUED A HIGH WIND WARNING EFFECTIVE UNTIL 900 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTH CENTRAL UTAH ...DAVIS COUNTY...SALT LAKE COUNTY IN NORTHWEST UTAH ...EASTERN TOOELE COUNTY A WIND GUST OF 61 MPH WAS REPORTED NEAR 6000 WEST AND 6000 SOUTH IN THE SALT LAKE VALLEY AT 659 PM. THIS GUST WAS THE RESULT OF A MICROBURST FROM A STRONG THUNDERSTORM WHICH WAS LOCATED ON THE WEST SIDE OF THE SALT LAKE VALLEY AND WAS MOVING TO THE NORTHEAST. IF YOU ARE IN I9TS PATH YOU SHOULD PREPARE FOR DAMAGING WINDS IN EXCESS OF 55 MPH AND DEADLY LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS. ERC 02 JUL 90 0110Z
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, Jul 1, 6:13 PM MDT, 47 minutes before
UTZALL-020500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SALT LAKE CITY UT 600 PM MDT SUN JUL 01 1990 ...THUNDERSTORMS INCREASING OVER UTAH... AT 530 PM SCATTERED THUNDERSTORMS WERE OVER THE MOUNTAINS OF UTAH. THE MAIN ACTIVITY WAS CENTERED OVER THE CENTRAL PORTION OF THE STATE. REPORTS FROM PROVO AND SPRINGVILLE INDICATED GUSTY WINDS IN THE 40-50 MPH RANGE AND AREAS OF REDUCED VISIBILITY IN BLOWING DUST WITH SOME LIGHT RAIN. MOST VALLEY AREAS OF THE STATE WERE JUST EXPERIENCING ISOLATED THUNDERSTORMS AND PARTLY CLOUDY SKIES. CONSIDERABLE LIGHTNING WAS ALSO OCCURRING BUT AGAIN THE MAIN AREAS AFFECTED HAVE BEEN THE MOUNTAIN AREAS. SCATTERED THUNDERSTORMS ARE EXPECTED TO CONTINUE OVER MOST MOUNTAIN AREAS OF UTAH THROUGH ABOUT 10 PM TONIGHT BEFORE DECREASING. MOST VALLEY AREAS DURING THIS TIME CAN EXPECT WIDELY SCATTERED THUNDERSTORMS. THE MAIN THREAT FROM THESE THUNDERSTORMS WILL BE GUSTY WINDS IN THE 40-50 MPH RANGE WITH A FEW HIGHER GUSTS. THERE WILL ALSO BE A MODERATE AMOUNT OF LIGHTNING ACCOMPANYING THE THUNDERSTORMS ALONG WITH SOME AREAS OF BLOWING DUST AND REDUCED VISIBILITIES. THERE HAS ALREADY BEEN ONE DEATH TODAY FROM A PERSON HIT BY LIGHTNING. THIS OCCURRED EARLIER THIS AFTERNOON AT STRAWBERRY RESERVOIR. RAINFALL AMOUNTS FROM ANY THUNDERSTORMS SHOULD BE ON THE LIGHT SIDE. PERSONS INVOLVED IN OUTDOOR ACTIVITIES SHOULD REMAIN ALERT FOR THUNDERSTORMS MOVING INTO THE AREA AND BE PREPARED TO SEEK SHELTER. IF YOU ARE CAUGHT OUTSIDE IN A THUNDERSTORM...DO NOT STAND UNDERNEATH A TALL ISOLATED TREE OR A TELEPHONE POLE. THESE OBJECTS ARE MOST LIKELY TO BE STRUCK BY LIGHTNING. ADDITIONAL STATEMENTS WILL BE ISSUED AS NEEDED. ERC 2 JUL 90 0002Z DMC...0012Z
Nearby
Severe Thunderstorm Warnings in Utah, 1990Every severe thunderstorm warning in 1990
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.