Alert archive / Utah / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 87, NWS Salt Lake City, UT

August 27, 1997Salt Lake County, Utah

NWS Salt Lake City, UT issued this severe thunderstorm warning at Aug 27, 1997, 8:27 PM MDT for Salt Lake County, Utah. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 27, 1997, 8:27 PM MDT (02:27 UTC)
Expired
Aug 27, 1997, 9:15 PM MDT
In force
48 min
Issued by
NWS Salt Lake City, UT
Area
Whole counties

County Salt Lake County, UT

The radar

The Salt Lake City radar (KMTX), 79 km from the middle of the area, began a volume at 02:28 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.

The nearest sounding before it

Salt Lake City I, UT (KSLC), launched 00:00Z, 2.5 hours before the alert went out and 13 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.

Skew-T log-pSkew-T log-p diagram, Salt Lake City I, UT at 00:00Z on 1997-08-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 66 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Salt Lake City I, UT at 00:00Z on 1997-08-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
66 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
4107 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
30 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KSLC 280233
SVRSLC
UTC035-280315-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING FOR HIGH WINDS
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
827 PM MDT WED AUG 27 1997

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY UT HAS ISSUED A
SEVERE THUNDERSTORM WARNING FOR HIGH WINDS EFFECTIVE UNTIL
915 PM MDT FOR PEOPLE IN THE FOLLOWING LOCATION...

IN NORTHWESTERN UTAH

   ...NORTHWESTERN SALT LAKE COUNTY

AT 822 PM MDT...A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER
RADAR AND SPOTTER REPORTS 17 MILES SOUTHWEST OF SALT LAKE CITY OR 4
MILES SOUTHWEST OF BACCHUS MOVING NORTHEAST AT 25 MPH.

THIS STORM CAN BE EXPECTED IN THE VICINITY OF...
BACCHUS                AT AROUND 830 PM MDT
MAGNA                  AT AROUND 835 PM MDT
SALT LAKE CITY         AT AROUND 900 PM MDT

SPOTTER REPORTS FROM THE TOOELE AREA INDICATED WINDS OF 58 MPH FROM
THIS STORM.  DOPPLER RADAR SUGGESTS THESE STRONG WINDS MAY CONTINUE
AS THE STORM MOVES ACROSS THE EXTREME NORTHWEST PORTION OF SALT
LAKE COUNTY.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 57 MPH...
DESTRUCTIVE HAIL AND DEADLY LIGHTNING.

THE STRONG WINDS CAN CAUSE POWER DISRUPTIONS...HAZARDS TO TRAILERS
AND HIGH PROFILE VEHICLES...AND BLOWIND DUST THAT CAN REDUCE
VISIBILITY SUDDENLY TO NEAR ZERO.

    ...CORRECTION TO ADD WORDS FOR HIGH WINDS TO FIRST PARA...


&

Nearby

Severe Thunderstorm Warnings in Utah, 1997Every severe thunderstorm warning in 1997

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; radar from the NEXRAD Level II archive.