Alert archive / Nebraska / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 277, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 13, 2023, 11:44 PM MDT for Morrill County, Scotts Bluff County, Nebraska. It was in force for 31 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
- Jul 13, 2023, 11:44 PM MDT (05:44 UTC)
- Expired
- Jul 14, 2023, 12:15 AM MDT
- In force
- 31 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Morrill County, NE, Scotts Bluff County, NE
The radar
The Cheyenne radar (KCYS), 140 km from the middle of the area, began a volume at 05:47 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
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 5.7 hours before the alert went out and 241 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
- 551 J/kg
- Mixed-layer CIN
- -170 J/kg
- Mixed-layer LCL
- 2044 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- 92 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.4
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 Jul 13, 11:02 PM MDT, 42 minutes earlier.
Area forecast discussion, Jul 13, 11:02 PM MDT, 42 minutes before
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</html>Hazardous weather outlook, Jul 13, 2:15 AM MDT, 21 hours 29 minutes before
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Local storm report, Jul 13, 6:12 PM MDT, 5 hours 32 minutes before
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</html>Local storm report, Jul 13, 6:39 PM MDT, 5 hours 5 minutes before
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</html>Special weather statement, Jul 13, 11:14 PM MDT, 30 minutes before
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</html>Special weather statement, Jul 13, 11:26 PM MDT, 18 minutes before
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<div class="status" id="status">Temporary Notice</div>
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The site you requested is temporarily down for maintenance or an unexpected outage.
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Please try again in a few minutes.
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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 |
|---|---|---|---|---|
| Jul 14, 1:20 PM MDT | Special Weather Statement | CYS | Platte | 40 min |
| Jul 14, 1:57 PM MDT | Special Weather Statement | CYS | Platte | 33 min |
| Jul 14, 2:07 PM MDT | Special Weather Statement | CYS | Converse | 38 min |
| Jul 14, 2:15 PM MDT | Severe Thunderstorm Warning | CYS | Converse | 30 min |
| Jul 14, 2:22 PM MDT | Special Weather Statement | CYS | Laramie | 38 min |
| Jul 14, 2:33 PM MDT | Special Weather Statement | CYS | Platte | 27 min |
| Jul 14, 2:48 PM MDT | Severe Thunderstorm Warning | CYS | Platte | 42 min |
| Jul 14, 2:53 PM MDT | Special Weather Statement | CYS | Converse | 37 min |
| Jul 14, 3:18 PM MDT | Special Weather Statement | CYS | Platte | 27 min |
| Jul 14, 3:29 PM MDT | Special Weather Statement | CYS | Laramie | 31 min |
| Jul 14, 3:33 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Platte | 27 min |
| Jul 14, 4:00 PM MDT | Special Weather Statement | CYS | Laramie | 30 min |
| Jul 14, 4:02 PM MDT | Special Weather Statement | CYS | Goshen | 28 min |
| Jul 14, 4:23 PM MDT | Special Weather Statement | CYS | Laramie | 37 min |
| Jul 14, 4:27 PM MDT | Special Weather Statement | CYS | Converse | 33 min |
| Jul 14, 4:55 PM MDT | Severe Thunderstorm Warning | CYS | Converse | 20 min |
| Jul 14, 5:32 PM MDT | Special Weather Statement | CYS | Laramie | 28 min |
| Jul 14, 5:41 PM MDT | Severe Thunderstorm Warning | CYS | Albany, Converse, Platte | 34 min |
| Jul 13, 11:14 PM MDT | Special Weather Statement | CYS | Morrill | 31 min |
| Jul 13, 11:26 PM MDT | Special Weather Statement | CYS | Morrill | 19 min |
| Jul 13, 11:51 PM MDT | Special Weather Statement | CYS | Morrill | 24 min |
| Jul 13, 11:59 PM MDT | Special Weather Statement | CYS | Morrill | 31 min |
| Jul 14, 12:16 AM MDT | Special Weather Statement | CYS | Morrill | 29 min |
| Jul 14, 12:17 AM MDT | Severe Thunderstorm Warning | CYS | Morrill, Scotts Bluff | 28 min |
| Jul 14, 3:42 AM MDT | Special Weather Statement | CYS | Dawes | 33 min |
| Jul 14, 4:16 AM MDT | Special Weather Statement | CYS | Box Butte | 29 min |
| Jul 14, 6:44 AM MDT | Special Weather Statement | CYS | Box Butte | 31 min |
| Jul 14, 3:39 PM MDT | Special Weather Statement | CYS | Kimball | 36 min |
| Jul 14, 4:17 PM MDT | Special Weather Statement | CYS | Kimball | 28 min |
| Jul 14, 5:11 PM MDT | Special Weather Statement | CYS | Cheyenne | 34 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2023Every severe thunderstorm warning in 2023
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.