Severe Thunderstorm Warning 138, NWS Cheyenne, WY

Issued

Sep 3, 2021, 4:45 PM MDT (22:45 UTC)

Expired

Sep 3, 2021, 5:16 PM MDT

In force

31 min

Issued by

NWS Cheyenne, WY

Area

Storm-based polygon

Tornado

Possible

Hail

1.25 in

Wind

60.0 mph

County Laramie County, WY

The Cheyenne radar (KCYS), 33 km from the middle of the area, began a volume at 22:46 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.

294 
WUUS55 KCYS 032245
SVRCYS
WYC021-032330-
/O.NEW.KCYS.SV.W.0138.210903T2245Z-210903T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Cheyenne WY
445 PM MDT Fri Sep 3 2021

The National Weather Service in Cheyenne has issued a

* Severe Thunderstorm Warning for...
  Southeastern Laramie County in southeastern Wyoming...

* Until 530 PM MDT.

* At 444 PM MDT, severe thunderstorms were located along a line
  extending from 7 miles north of Burns to near Hillsdale to 12 miles
  east of Cheyenne to near South Greeley, moving east at 15 mph.

  HAZARD...60 mph wind gusts and half dollar size hail.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Pine Bluffs, Burns, Hillsdale and Carpenter. 

This includes Interstate 80 in Wyoming between mile markers 375 and
402.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. These storms may cause serious injury and significant
property damage.

&&

LAT...LON 4105 10477 4110 10466 4118 10454 4133 10446
      4128 10405 4116 10405 4106 10408 4100 10417
      4100 10463
TIME...MOT...LOC 2244Z 290DEG 11KT 4130 10437 4116 10445 4108 10457
4103 10473

TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.25 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

Charnick

019 
WWUS55 KCYS 032303
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
503 PM MDT Fri Sep 3 2021

WYC021-032330-
/O.CON.KCYS.SV.W.0138.000000T0000Z-210903T2330Z/
Laramie WY-
503 PM MDT Fri Sep 3 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM MDT
FOR SOUTHEASTERN LARAMIE COUNTY...

At 503 PM MDT, severe thunderstorms were located along a line
extending from 10 miles northeast of Hillsdale to near Burns to 8
miles west of Carpenter to 9 miles southeast of South Greeley, moving
east at 15 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...
Pine Bluffs, Burns and Carpenter. 

This includes Interstate 80 in Wyoming between mile markers 379 and
402.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4104 10475 4112 10456 4119 10445 4132 10436
      4128 10405 4116 10405 4106 10408 4100 10417
      4100 10463
TIME...MOT...LOC 2303Z 290DEG 11KT 4128 10430 4114 10438 4106 10450
4101 10466

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

$$

Charnick

662 
WWUS55 KCYS 032316
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
516 PM MDT Fri Sep 3 2021

WYC021-032326-
/O.CAN.KCYS.SV.W.0138.000000T0000Z-210903T2330Z/
Laramie WY-
516 PM MDT Fri Sep 3 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LARAMIE COUNTY IS
CANCELLED...
    
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning has
been cancelled.  However heavy rain is still possible with these
thunderstorms.

LAT...LON 4104 10475 4112 10456 4119 10445 4132 10436
      4128 10405 4116 10405 4106 10408 4100 10417
      4100 10463
TIME...MOT...LOC 2314Z 290DEG 11KT 4127 10426 4113 10434 4105 10446
4100 10462

$$

Charnick

Severe Thunderstorm Warnings in Wyoming, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.