Alert archive / Wyoming / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 122, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 26, 2019, 5:42 PM MDT for Goshen County, Wyoming; Scotts Bluff County, Nebraska. It was in force for 33 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
- Jun 26, 2019, 5:42 PM MDT (23:42 UTC)
- Expired
- Jun 26, 2019, 6:15 PM MDT
- In force
- 33 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
Counties Scotts Bluff County, NE, Goshen County, WY
The radar
The Cheyenne radar (KCYS), 111 km from the middle of the area, began a volume at 23:42 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 26, 4:37 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Rapid City, SD (KUNR), launched 12:00Z, 11.7 hours before the alert went out and 252 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.
- Mixed-layer CAPE
- 44 J/kg
- Mixed-layer CIN
- -616 J/kg
- Mixed-layer LCL
- 1129 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Cheyenne, WY wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 26, 5:35 PM MDT, 7 minutes earlier.
Area forecast discussion, Jun 26, 5:35 PM MDT, 7 minutes before
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</html>Hazardous weather outlook, Jun 26, 4:59 PM MDT, 43 minutes before
Hazardous Weather Outlook National Weather Service Cheyenne WY 459 PM MDT Wed Jun 26 2019 WYZ101-103>107-109>118-272300- Converse County Lower Elevations-North Laramie Range- Ferris/Seminoe/Shirley Mountains-Shirley Basin- Central Laramie Range and Southwest Platte County- East Platte County-Central Carbon County- North Snowy Range Foothills-Southwest Carbon County- Sierra Madre Range-Upper North Platte River Basin-Snowy Range- Laramie Valley-South Laramie Range-South Laramie Range Foothills- Central Laramie County- 459 PM MDT Wed Jun 26 2019 This hazardous weather outlook is for portions of east central Wyoming...south central Wyoming and southeast Wyoming. .DAY ONE...TONIGHT Isolated thunderstorms may develop late this afternoon and early evening. Severe weather is not expected. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY Warm temperatures and snow melt will continue with increased river flows over the next few days, however the probability for widespread hazardous weather is low. .Spotter information statement... Spotter activation will not be required. NEZ002-003-019>021-054-055-095-096-WYZ102-108-119-272300- Dawes-Box Butte-Scotts Bluff-Banner-Morrill-Kimball-Cheyenne- North Sioux-South Sioux-Niobrara County-Goshen County- East Laramie County- 459 PM MDT Wed Jun 26 2019 This hazardous weather outlook is for portions of western Nebraska...east central Wyoming and southeast Wyoming. .DAY ONE...TONIGHT Scattered strong to severe thunderstorms will develop late this afternoon and continue through late evening east of Interstate 25. Strong instability and wind shear will favor supercells capable of very large hail, damaging winds and possibly a tornado or two across the western Nebraska Panhandle and far eastern Wyoming. A Severe Thunderstorm Watch is in effect until 11 PM MDT. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY The probability for widespread hazardous weather is low. .Spotter information statement... Spotter activation may be required through this evening east of a line from Lusk to Pine Bluffs.
In the hours before
Special weather statement, Jun 26, 4:16 PM MDT, 1 hour 26 minutes before
Special Weather Statement
National Weather Service Cheyenne WY
416 PM MDT Wed Jun 26 2019
NEZ019-020-096-WYZ108-262300-
Scotts Bluff NE-South Sioux NE-Banner NE-Goshen County WY-
416 PM MDT Wed Jun 26 2019
...SIGNIFICANT WEATHER ADVISORY FOR WESTERN SCOTTS BLUFF...
NORTHWESTERN BANNER...SOUTHWESTERN SIOUX AND SOUTHERN GOSHEN COUNTIES
UNTIL 500 PM MDT...
At 416 PM MDT, Doppler radar was tracking a strong thunderstorm near
Hawk Springs, or 16 miles south of Torrington, moving northeast at 30
mph.
Nickel size hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Torrington, Mitchell, Morrill, La Grange, Lyman, Yoder, Huntley,
Stegall, Hawk Springs, Hawk Springs Campground, Hubbard Hill, Hawk
Springs Recreation Area, Veteran and Henry.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 4159 10415 4168 10437 4180 10458 4220 10419
4194 10363
TIME...MOT...LOC 2216Z 231DEG 25KT 4183 10419
LyonsSpecial weather statement, Jun 26, 4:18 PM MDT, 1 hour 24 minutes before
Special Weather Statement
National Weather Service Cheyenne WY
418 PM MDT Wed Jun 26 2019
NEZ054-WYZ119-262300-
Kimball NE-East Laramie County WY-
418 PM MDT Wed Jun 26 2019
...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL KIMBALL AND
SOUTHEASTERN LARAMIE COUNTIES UNTIL 500 PM MDT...
At 418 PM MDT, Doppler radar was tracking a strong thunderstorm near
Carpenter, or 28 miles east of Cheyenne, moving northeast at 15 mph.
Pea size hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Pine Bluffs and Carpenter.
This includes the following highways...
Interstate 80 in Wyoming between mile markers 389 and 402.
Interstate 80 in Nebraska between mile markers 1 and 8.
LAT...LON 4104 10440 4135 10417 4120 10388 4100 10413
4100 10434
TIME...MOT...LOC 2218Z 216DEG 15KT 4105 10426
LyonsSpecial weather statement, Jun 26, 4:54 PM MDT, 48 minutes before
Special Weather Statement National Weather Service Cheyenne WY 454 PM MDT Wed Jun 26 2019 NEZ020-054-WYZ108-119-262345- Kimball NE-Banner NE-Goshen County WY-East Laramie County WY- 454 PM MDT Wed Jun 26 2019 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN KIMBALL... SOUTHWESTERN BANNER...SOUTHEASTERN GOSHEN AND EAST CENTRAL LARAMIE COUNTIES UNTIL 545 PM MDT... At 453 PM MDT, Doppler radar was tracking a strong thunderstorm 8 miles northwest of Pine Bluffs, or 27 miles west of Kimball, moving north at 20 mph. Nickel size hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Albin. PRECAUTIONARY/PREPAREDNESS ACTIONS... Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. && A Severe Thunderstorm Watch remains in effect until 1100 PM MDT for the Panhandle of Nebraska...and southeastern Wyoming. LAT...LON 4115 10412 4122 10434 4161 10419 4151 10386 TIME...MOT...LOC 2253Z 202DEG 19KT 4126 10419 Lyons
Special weather statement, Jun 26, 5:03 PM MDT, 39 minutes before
Special Weather Statement National Weather Service Cheyenne WY 503 PM MDT Wed Jun 26 2019 NEZ019-096-262345- Scotts Bluff NE-South Sioux NE- 503 PM MDT Wed Jun 26 2019 ...SIGNIFICANT WEATHER ADVISORY FOR SCOTTS BLUFF AND SOUTH CENTRAL SIOUX COUNTIES UNTIL 545 PM MDT... At 502 PM MDT, Doppler radar was tracking a strong thunderstorm over Stegall, or 15 miles southeast of Torrington, moving east at 25 mph. Half inch hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Scottsbluff, Gering, Mitchell, Terrytown, Morrill, Minatare, Lyman, Lake Minatare Campground, Stegall, Scotts Bluff National Monument, Hubbard Hill, Scottsbluff Airport, Lake Minatare, Lake Alice, Melbeta and Henry. PRECAUTIONARY/PREPAREDNESS ACTIONS... Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. && A Severe Thunderstorm Watch remains in effect until 1100 PM MDT for the Panhandle of Nebraska. LAT...LON 4171 10405 4200 10405 4215 10353 4179 10337 TIME...MOT...LOC 2302Z 251DEG 24KT 4190 10398 Lyons
Local storm report, Jun 26, 5:29 PM MDT, 13 minutes before
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</html>Special weather statement, Jun 26, 5:40 PM MDT, 2 minutes before
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</html>The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 25, 6:04 PM MDT | Special Weather Statement | CYS | Converse | 41 min |
| Jun 25, 6:29 PM MDT | Special Weather Statement | CYS | Niobrara | 46 min |
| Jun 25, 6:35 PM MDT | Severe Thunderstorm Warning | CYS | Converse, Niobrara | 28 min |
| Jun 25, 6:37 PM MDT | Special Weather Statement | CYS | Converse | 38 min |
| Jun 25, 6:40 PM MDT | Special Weather Statement | CYS | Goshen | 35 min |
| Jun 25, 9:02 PM MDT | Special Weather Statement | CYS | Carbon | 43 min |
| Jun 26, 3:37 PM MDT | Special Weather Statement | CYS | Goshen | 38 min |
| Jun 26, 3:58 PM MDT | Special Weather Statement | CYS | Platte | 47 min |
| Jun 26, 4:16 PM MDT | Special Weather Statement | CYS | Goshen | 44 min |
| Jun 26, 4:28 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 33 min |
| Jun 26, 5:46 PM MDT | Special Weather Statement | CYS | Niobrara | 44 min |
| Jun 26, 5:58 PM MDT | Severe Thunderstorm Warning | CYS | Converse, Niobrara | 34 min |
| Jun 25, 6:01 PM MDT | Special Weather Statement | CYS | Kimball | 29 min |
| Jun 25, 6:43 PM MDT | Special Weather Statement | CYS | Dawes | 32 min |
| Jun 25, 7:16 PM MDT | Special Weather Statement | CYS | Sioux | 44 min |
| Jun 25, 7:20 PM MDT | Special Weather Statement | CYS | Dawes | 40 min |
| Jun 25, 8:53 PM MDT | Special Weather Statement | CYS | Box Butte | 37 min |
| Jun 26, 4:18 PM MDT | Special Weather Statement | CYS | Kimball | 42 min |
| Jun 26, 4:54 PM MDT | Special Weather Statement | CYS | Banner | 51 min |
| Jun 26, 5:03 PM MDT | Special Weather Statement | CYS | Scotts Bluff | 42 min |
| Jun 26, 5:17 PM MDT | Severe Thunderstorm Warning | CYS | Scotts Bluff, Sioux | 28 min |
| Jun 26, 5:40 PM MDT | Special Weather Statement | CYS | Sioux | 35 min |
Nearby
Severe Thunderstorm Warnings in Wyoming, 2019Severe Thunderstorm Warnings in Nebraska, 2019Every severe thunderstorm warning in 2019
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.