Alert archive / Nebraska / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 42, NWS Cheyenne, WY

June 12, 2022Morrill County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 12, 2022, 6:06 PM MDT for Morrill County, Nebraska. It was in force for 39 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 12, 2022, 6:06 PM MDT (00:06 UTC)
Expired: Jun 12, 2022, 6:45 PM MDT
In force: 39 min
Issued by: NWS Cheyenne, WY
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Morrill County, NE

The radar

The Cheyenne radar (KCYS), 162 km from the middle of the area, began a volume at 00:06 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 12, 3:46 PM MDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 0.1 hours before the alert went out and 206 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: 21 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 3428 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 80 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 12, 5:27 PM MDT, 39 minutes earlier.

Area forecast discussion, Jun 12, 5:27 PM MDT, 39 minutes before

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Hazardous weather outlook, Jun 12, 4:36 AM MDT, 13 hours 30 minutes before

Hazardous Weather Outlook
National Weather Service Cheyenne WY
436 AM MDT Sun Jun 12 2022

NEZ002-003-019>021-054-055-095-096-WYZ101>119-131045-
Dawes County-Box Butte County-Scotts Bluff County-Banner County-
Morrill County-Kimball County-Cheyenne County-
Northern Sioux County-Southern Sioux County-
Converse County Lower Elevations-Niobrara County-
North Laramie Range-Ferris/Seminoe/Shirley Mountains-
Shirley Basin-Central Laramie Range and Southwest Platte County-
East Platte County-Goshen 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-East Laramie County-
436 AM MDT Sun Jun 12 2022

This hazardous weather outlook is for portions of panhandle
Nebraska...east central Wyoming...south central Wyoming and
southeast Wyoming.

.DAY ONE...TODAY AND TONIGHT

Near record high temperatures are possible today. Isolated to
scattered thunderstorms could produce strong to severe downburst
winds. Large hail and an isolated tornado could be possible in the
higher moisture environment northeast of a line roughly from Lusk
to Sidney.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

Continued near record high temperatures are possible on Monday.
There is a possibility for elevated to near high winds in Carbon
county. A strong cold front will push through late on Monday and
bring scattered showers and thunderstorms to our western counties.
High winds are possible in the wind prone areas on Tuesday.

.Spotter information statement...

Spotter activation may be required. Please monitor the latest
forecast updates in the event that the spotter network will be
needed to provide weather reports during any severe weather that
may occur today.

In the hours before

Local storm report, Jun 12, 4:38 PM MDT, 1 hour 28 minutes before

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Local storm report, Jun 12, 4:55 PM MDT, 1 hour 11 minutes before

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Special weather statement, Jun 12, 5:41 PM MDT, 25 minutes before

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Special weather statement, Jun 12, 5:45 PM MDT, 21 minutes before

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Special weather statement, Jun 12, 5:45 PM MDT, 21 minutes before

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Local storm report, Jun 12, 5:46 PM MDT, 20 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 13, 2:44 AM MDT	High Wind Watch	CYS	Albany, Carbon, Laramie, Platte	11 hr
Jun 13, 2:07 PM MDT	High Wind Watch	CYS	Albany, Carbon, Converse, Laramie, Platte	28 hr
Jun 13, 2:07 PM MDT	High Wind Warning	CYS	Albany, Carbon, Converse, Goshen, Laramie, Platte	28 hr
Jun 13, 4:52 PM MDT	Special Weather Statement	CYS	Niobrara	23 min
Jun 13, 5:11 PM MDT	Special Weather Statement	CYS	Niobrara	34 min
Jun 13, 5:25 PM MDT	Special Weather Statement	CYS	Converse	35 min
Jun 13, 5:36 PM MDT	Severe Thunderstorm Warning	CYS	Converse, Niobrara, Platte	39 min
Jun 13, 5:56 PM MDT	Severe Thunderstorm Warning	CYS	Niobrara	49 min
Jun 12, 6:31 PM MDT	Special Weather Statement	CYS	Box Butte	44 min
Jun 12, 6:41 PM MDT	Special Weather Statement	CYS	Morrill	34 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2022 Every severe thunderstorm warning in 2022

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.