Alert archive / Wyoming / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 80, NWS Cheyenne, WY

July 5, 2021Albany County, Wyoming

NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 5, 2021, 6:12 PM MDT for Albany County, Wyoming. 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 outline as issued.

The facts

Issued: Jul 5, 2021, 6:12 PM MDT (00:12 UTC)
Expired: Jul 5, 2021, 7:00 PM MDT
In force: 48 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Albany County, WY

The radar

The Cheyenne radar (KCYS), 103 km from the middle of the area, began a volume at 00:13 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

Riverton, WY (KRIW), launched 00:00Z, 0.2 hours before the alert went out and 262 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: 3563 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 93 m²/s²
0-3 km storm-relative helicity: 264 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.4

Open this sounding in Storm Lab

The text

As transmitted.

024 
WUUS55 KCYS 060012
SVRCYS
WYC001-060100-
/O.NEW.KCYS.SV.W.0080.210706T0012Z-210706T0100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Cheyenne WY
612 PM MDT Mon Jul 5 2021

The National Weather Service in Cheyenne has issued a

* Severe Thunderstorm Warning for...
  Albany County in southeastern Wyoming...

* Until 700 PM MDT.

* At 612 PM MDT, severe thunderstorms were located along a line
  extending from 10 miles east of Battle Mountain to near Wheatland
  Reservoir 3 to 6 miles northwest of Bosler to 7 miles north of Lake
  Hattie Reservoir, moving east at 30 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Laramie, Rock River, Tie City Campground, North Crow Campground,
  Bosler, Baldy Peak, University Of Wyoming War Memorial Stadium,
  Garrett, Wheatland Reservoir 3, Vedauwoo Campground and Yellow Pine
  Campground.

This includes Interstate 80 in Wyoming between mile markers 288 and
329.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Cheyenne.

&&

LAT...LON 4126 10600 4167 10599 4184 10608 4215 10607
      4233 10568 4201 10526 4114 10528
TIME...MOT...LOC 0012Z 256DEG 25KT 4210 10600 4189 10581 4165 10577
4135 10588

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

Hammer

3 follow-up statements

078 
WWUS55 KCYS 060032
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
632 PM MDT Mon Jul 5 2021

WYC001-060100-
/O.CON.KCYS.SV.W.0080.000000T0000Z-210706T0100Z/
Albany WY-
632 PM MDT Mon Jul 5 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM MDT
FOR EASTERN ALBANY COUNTY...

At 632 PM MDT, severe thunderstorms were located along a line
extending from 11 miles west of Garrett to near Wheatland Reservoir 3
to 8 miles northeast of Bosler to 7 miles west of Laramie, moving
east at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Laramie, Tie City Campground, North Crow Campground, Bosler, Baldy
Peak, University Of Wyoming War Memorial Stadium, Garrett, Wheatland
Reservoir 3, Vedauwoo Campground and Yellow Pine Campground.

This includes Interstate 80 in Wyoming between mile markers 296 and
329.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Cheyenne.

&&

LAT...LON 4124 10587 4168 10584 4215 10607 4233 10568
      4201 10526 4114 10528
TIME...MOT...LOC 0032Z 255DEG 25KT 4213 10583 4192 10564 4168 10560
4130 10573

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

Hammer

175 
WWUS55 KCYS 060049
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
649 PM MDT Mon Jul 5 2021

WYC001-060100-
/O.CON.KCYS.SV.W.0080.000000T0000Z-210706T0100Z/
Albany WY-
649 PM MDT Mon Jul 5 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM MDT
FOR EASTERN ALBANY COUNTY...

At 649 PM MDT, severe thunderstorms were located along a line
extending from near Garrett to 11 miles east of Wheatland Reservoir 3
to 11 miles north of Baldy Peak to Laramie, moving east at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Laramie, Tie City Campground, North Crow Campground, Bosler, Baldy
Peak, University Of Wyoming War Memorial Stadium, Garrett, Wheatland
Reservoir 3 and Yellow Pine Campground.

This includes Interstate 80 in Wyoming between mile markers 306 and
328.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Cheyenne.

&&

LAT...LON 4122 10569 4177 10570 4218 10600 4233 10568
      4201 10526 4114 10528
TIME...MOT...LOC 0049Z 256DEG 25KT 4215 10570 4194 10551 4170 10547
4132 10560

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

Hammer

918 
WWUS55 KCYS 060055
SVSCYS

Severe Weather Statement
National Weather Service Cheyenne WY
655 PM MDT Mon Jul 5 2021

WYC001-060105-
/O.EXP.KCYS.SV.W.0080.000000T0000Z-210706T0100Z/
Albany WY-
655 PM MDT Mon Jul 5 2021

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN ALBANY COUNTY WILL
EXPIRE AT 700 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 gusty
winds are still possible with these thunderstorms.

To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Cheyenne.

LAT...LON 4122 10569 4177 10570 4218 10600 4233 10568
      4201 10526 4114 10528
TIME...MOT...LOC 0055Z 256DEG 25KT 4216 10565 4195 10546 4171 10542
4133 10555

$$

Hammer

The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 5, 7:00 PM MDT	Special Weather Statement	CYS		30 min
Jul 5, 7:02 PM MDT	Special Weather Statement	CYS	Albany	28 min
Jul 5, 7:27 PM MDT	Special Weather Statement	CYS	Laramie	33 min
Jul 5, 8:03 PM MDT	Special Weather Statement	CYS	Laramie	27 min
Jul 6, 1:45 PM MDT	Fire Weather Watch	CYS		13 hr

Nearby

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

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.