Severe Thunderstorm Warning 77, NWS Salt Lake City, UT

Issued

Aug 17, 2021, 5:30 PM MDT (23:30 UTC)

Expired

Aug 17, 2021, 6:15 PM MDT

In force

45 min

Issued by

NWS Salt Lake City, UT

Area

Storm-based polygon

Damage threat

Considerable

Hail

1.0 in

Wind

70.0 mph

Counties Davis County, UT, Salt Lake County, UT

The Salt Lake City radar (KMTX), 52 km from the middle of the area, began a volume at 23:33 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.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

372 
WUUS55 KSLC 172330
SVRSLC
UTC011-035-180015-
/O.NEW.KSLC.SV.W.0077.210817T2330Z-210818T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Salt Lake City UT
530 PM MDT Tue Aug 17 2021

The National Weather Service in Salt Lake City has issued a

* Severe Thunderstorm Warning for...
  Salt Lake County in northern Utah...
  Davis County in northern Utah...

* Until 615 PM MDT

* At 530 PM MDT, severe thunderstorms were located along a line
  extending from 11 miles northwest of Magna to near South Jordan,
  moving northeast at 40 mph.

  HAZARD...70 mph wind gusts and quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings. 

* Locations impacted include...
  Salt Lake City, West Valley City, Sandy, Layton, Murray, Bountiful,
  Farmington, Hill Air Force Base, West Jordan, Taylorsville, South
  Jordan, Draper, Riverton, Cottonwood Heights, Clearfield, Midvale,
  Kaysville, Holladay, Syracuse and South Salt Lake.

This includes the following highways...
 Interstate 15 between mile markers 287 and 337.
 Interstate 84 between mile markers 86 and 87.
 Interstate 80 in Utah between mile markers 102 and 132.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Large hail and damaging winds and continuous cloud to ground
lightning is occurring with these storms. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 4113 11188 4058 11166 4044 11195 4070 11220
      4107 11248 4115 11218 4115 11198
TIME...MOT...LOC 2330Z 230DEG 36KT 4084 11219 4056 11193 

THUNDERSTORM DAMAGE THREAT...CONSIDERABLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...OBSERVED
MAX WIND GUST...70 MPH

$$

MPS

216 
WWUS55 KSLC 172354
SVSSLC

Severe Weather Statement
National Weather Service Salt Lake City UT
554 PM MDT Tue Aug 17 2021

UTC011-035-180015-
/O.CON.KSLC.SV.W.0077.000000T0000Z-210818T0015Z/
Salt Lake UT-Davis UT-
554 PM MDT Tue Aug 17 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM MDT
FOR CENTRAL SALT LAKE AND EASTERN DAVIS COUNTIES...

At 554 PM MDT, severe thunderstorms were located along a line
extending from 9 miles west of West Bountiful to Cottonwood West,
moving northeast at 35 mph.

HAZARD...60 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

Locations impacted include...
Salt Lake City, West Valley City, Sandy, Layton, Murray, Bountiful,
Farmington, Hill Air Force Base, West Jordan, Taylorsville, South
Jordan, Draper, Riverton, Cottonwood Heights, Clearfield, Midvale,
Kaysville, Holladay, Syracuse and South Salt Lake.

This includes the following highways...
 Interstate 15 between mile markers 289 and 337.
 Interstate 84 between mile markers 86 and 87.
 Interstate 80 in Utah between mile markers 109 and 132.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

Continuous cloud to ground lightning is occurring with these storms.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 4113 11188 4058 11166 4048 11192 4077 11212
      4115 11218 4115 11198
TIME...MOT...LOC 2354Z 227DEG 30KT 4094 11209 4062 11185 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...OBSERVED
MAX WIND GUST...60 MPH

$$

MPS

239 
WWUS55 KSLC 180012
SVSSLC

Severe Weather Statement
National Weather Service Salt Lake City UT
612 PM MDT Tue Aug 17 2021

UTC011-035-180022-
/O.EXP.KSLC.SV.W.0077.000000T0000Z-210818T0015Z/
Salt Lake UT-Davis UT-
612 PM MDT Tue Aug 17 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL SALT LAKE AND EASTERN
DAVIS COUNTIES WILL EXPIRE AT 615 PM MDT...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However small hail
is still possible with these thunderstorms.

LAT...LON 4113 11188 4058 11166 4048 11192 4077 11212
      4115 11218 4115 11198
TIME...MOT...LOC 0012Z 230DEG 36KT 4105 11191 4073 11167 

$$

MPS

Severe Thunderstorm Warnings in Utah, 2021Every severe thunderstorm warning in 2021

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.