Alert archive / Utah / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 13, NWS Salt Lake City, UT

June 5, 2020Uinta County, Wyoming; Rich County, Summit County, Utah

NWS Salt Lake City, UT issued this severe thunderstorm warning at Jun 5, 2020, 5:32 PM MDT for Uinta County, Wyoming; Rich County, Summit County, Utah. It was in force for 73 min. 4 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 5, 2020, 5:32 PM MDT (23:32 UTC)
Expired: Jun 5, 2020, 6:45 PM MDT
In force: 73 min
Issued by: NWS Salt Lake City, UT
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Rich County, UT, Summit County, UT, Uinta County, WY

The radar

The Salt Lake City radar (KMTX), 126 km from the middle of the area, began a volume at 23:35 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.

What was reported inside it

Time	Report	Where	Remark
Jun 5, 5:35 PM MDT	TSTM WND GST 63	11 N Trial Lk, UT	WINDY PEAK AVALANCHE MESONET SITE REPORTED MAX GUST IN THE LAST HOUR OF 63 MPH. TIME ESTIMATED FROM RADAR. ELEVATION - 10662 FEET
Jun 5, 6:06 PM MDT	TSTM WND GST 60	2 Sw Leroy, WY	MESONET STATION WY34 1.8 SW LEROY (WYDOT).
Jun 5, 6:06 PM MDT	NON-TSTM WND GST 60	2 Sw Leroy, WY	MESONET STATION WY34 1.8 SW LEROY (WYDOT).
Jun 5, 6:16 PM MDT	TSTM WND GST 63	2 Sw Leroy, WY	MESONET STATION WY34 1.8 SW LEROY (WYDOT).

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

The nearest sounding before it

Salt Lake City I, UT (KSLC), launched 12:00Z, 11.5 hours before the alert went out and 86 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3402 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 123 m²/s²
0-3 km storm-relative helicity: 161 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

243 
WUUS55 KSLC 052332
SVRSLC
UTC033-043-WYC041-060045-
/O.NEW.KSLC.SV.W.0013.200605T2332Z-200606T0045Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Salt Lake City UT
532 PM MDT Fri Jun 5 2020

The National Weather Service in Salt Lake City has issued a

* Severe Thunderstorm Warning for...
  Southeastern Rich County in northern Utah...
  Central Summit County in northern Utah...
  Western Uinta County in southwestern Wyoming...

* Until 645 PM MDT

* At 532 PM MDT, a severe thunderstorm was located 13 miles northwest
  of Mirror Lake, or 18 miles east of Coalville, moving north at 50
  mph.

  HAZARD...60 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...Expect damage to roofs, siding, and trees. 

* Locations impacted include...
  Evanston, Woodruff, Ragen, Wahsatch, Castle Rock, Almy, Altamont,
  Piedmont and Leroy.

This includes the following highways...
 Interstate 80 in Wyoming between mile markers 1 and 25.
 Interstate 80 in Utah between mile markers 180 and 196.
 Mirror Lake Highway between mile markers 35 and 54.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4158 11052 4074 11076 4071 11083 4073 11087
      4072 11089 4076 11126 4117 11125 4119 11123
      4122 11124 4158 11123
TIME...MOT...LOC 2332Z 194DEG 42KT 4085 11106 

HAIL...<.75IN
WIND...60MPH
 
$$

Church

2 follow-up statements

414 
WWUS55 KSLC 060014
SVSSLC

Severe Weather Statement
National Weather Service Salt Lake City UT
614 PM MDT Fri Jun 5 2020

UTC033-043-060024-
/O.CAN.KSLC.SV.W.0013.000000T0000Z-200606T0045Z/
Rich UT-Summit UT-
614 PM MDT Fri Jun 5 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN RICH AND CENTRAL
SUMMIT COUNTIES IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

LAT...LON 4104 11067 4109 11104 4158 11104 4158 11052
TIME...MOT...LOC 0014Z 194DEG 42KT 4133 11090 

$$

WYC041-060045-
/O.CON.KSLC.SV.W.0013.000000T0000Z-200606T0045Z/
Uinta WY-
614 PM MDT Fri Jun 5 2020

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM MDT
FOR WESTERN UINTA COUNTY...

At 614 PM MDT, a severe thunderstorm was located near Evanston,
moving north at 50 mph.

HAZARD...60 mph wind gusts. 

SOURCE...Wyoming DOT Mesonet sensor at Leroy reported wind gust of 
         60 mph.

IMPACT...Expect damage to roofs, siding, and trees. 

Locations impacted include...
Evanston, Ragen, Almy, Altamont, Piedmont and Leroy. 

This includes Interstate 80 in Wyoming between mile markers 1 and 25.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4104 11067 4109 11104 4158 11104 4158 11052
TIME...MOT...LOC 0014Z 194DEG 42KT 4133 11090 

HAIL...<.75IN
WIND...60MPH
 
$$

Church

546 
WWUS55 KSLC 060037
SVSSLC

Severe Weather Statement
National Weather Service Salt Lake City UT
637 PM MDT Fri Jun 5 2020

WYC041-060046-
/O.EXP.KSLC.SV.W.0013.000000T0000Z-200606T0045Z/
Uinta WY-
637 PM MDT Fri Jun 5 2020

...THE SEVERE THUNDERSTORM WARNING FOR WESTERN UINTA COUNTY WILL
EXPIRE AT 645 PM MDT...
        
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning will
be allowed to expire.

LAT...LON 4104 11067 4109 11104 4158 11104 4158 11052
TIME...MOT...LOC 0036Z 194DEG 42KT 4157 11082 

$$

Church

The office that day

Everything else NWS Salt Lake City, UT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 5, 5:38 PM MDT	Special Weather Statement	SLC	Uinta	67 min
Jun 5, 3:52 AM MDT	Flash Flood Watch	SLC		35 hr
Jun 5, 3:31 PM MDT	Special Weather Statement	SLC	Beaver, Iron	59 min
Jun 5, 4:08 PM MDT	Special Weather Statement	SLC	Wasatch	52 min
Jun 5, 4:25 PM MDT	Special Weather Statement	SLC	Sanpete	65 min
Jun 5, 4:41 PM MDT	Special Weather Statement	SLC	Utah	49 min
Jun 5, 4:49 PM MDT	Special Weather Statement	SLC	Summit, Wasatch	41 min
Jun 5, 5:09 PM MDT	Special Weather Statement	SLC	Beaver, Iron	51 min
Jun 5, 5:16 PM MDT	Special Weather Statement	SLC	Carbon, Duchesne	59 min
Jun 5, 5:36 PM MDT	Special Weather Statement	SLC	Wasatch	39 min
Jun 5, 5:50 PM MDT	Severe Thunderstorm Warning	SLC	Juab, Tooele, Utah, Wasatch	40 min

Nearby

Severe Thunderstorm Warnings in Utah, 2020 Severe Thunderstorm Warnings in Wyoming, 2020 Every severe thunderstorm warning in 2020

Sources

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.