Alert archive / Nebraska / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 332, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 31, 2023, 1:07 AM MDT for Box Butte County, Morrill County, Nebraska. It was in force for 35 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 31, 2023, 1:07 AM MDT (07:07 UTC)
- Expired
- Jul 31, 2023, 1:42 AM MDT
- In force
- 35 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Box Butte County, NE, Morrill County, NE
The radar
The Cheyenne radar (KCYS), 172 km from the middle of the area, began a volume at 07:08 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, 7.1 hours before the alert went out and 224 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
- 3462 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 1594 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 189 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 16.6
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 30, 11:09 PM MDT, 1 hour 58 minutes earlier.
Area forecast discussion, Jul 30, 11:09 PM MDT, 1 hour 58 minutes before
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</html>Hazardous weather outlook, Jul 30, 3:29 PM MDT, 9 hours 38 minutes before
Hazardous Weather Outlook National Weather Service Cheyenne WY 329 PM MDT Sun Jul 30 2023 WYZ104-105-109>115-312130- Ferris/Seminoe/Shirley Mountains-Shirley Basin- Central Carbon County-North Snowy Range Foothills- Southwest Carbon County-Sierra Madre Range- Upper North Platte River Basin-Snowy Range-Laramie Valley- 329 PM MDT Sun Jul 30 2023 This hazardous weather outlook is for portions of south central Wyoming and southeast Wyoming. .DAY ONE...THIS AFTERNOON AND TONIGHT Scattered showers and thunderstorms are expected across the area this afternoon. Gusty winds will be possible with storms. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY Daily chances for afternoon and evening thunderstorms will continue for the week ahead. Confidence is increasing that a significant push of monsoon moisture will arrive early next week, bringing more widespread thunderstorms and heavy rainfall. .Spotter information statement... Spotter activation will not be needed. NEZ019>021-054-055-WYZ101-103-106>108-116>119-312130- Scotts Bluff County-Banner County-Morrill County-Kimball County- Cheyenne County-Converse County Lower Elevations- North Laramie Range- Central Laramie Range and Southwest Platte County- East Platte County-Goshen County-South Laramie Range- South Laramie Range Foothills-Central Laramie County- East Laramie County- 329 PM MDT Sun Jul 30 2023 This hazardous weather outlook is for portions of panhandle Nebraska...east central Wyoming and southeast Wyoming. .DAY ONE...THIS AFTERNOON AND TONIGHT Scattered showers and thunderstorms are possible across the area this afternoon and evening. A few storms may be strong to severe with large hail possible. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY Daily chances for afternoon and evening thunderstorms will continue for the week ahead. Confidence is increasing that a significant push of monsoon moisture will arrive early next week, bringing more widespread thunderstorms and heavy rainfall. .Spotter information statement... Spotters are encouraged to report severe weather to the NWS. NEZ002-003-095-096-WYZ102-312130- Dawes County-Box Butte County-Northern Sioux County- Southern Sioux County-Niobrara County- 329 PM MDT Sun Jul 30 2023 This hazardous weather outlook is for portions of panhandle Nebraska and east central Wyoming. .DAY ONE...THIS AFTERNOON AND TONIGHT Scattered showers and thunderstorms are possible across the area this afternoon and evening. A few storms may be strong to severe with large hail possible late in the afternoon. Another round of storms is possible in the late evening hours with potentially damaging winds and heavy rainfall. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY Daily chances for afternoon and evening thunderstorms will continue for the week ahead. Confidence is increasing that a significant push of monsoon moisture will arrive early next week, bringing more widespread thunderstorms and heavy rainfall. .Spotter information statement... Spotters are encouraged to report severe weather to the NWS.
In the hours before
Special weather statement, Jul 31, 12:15 AM MDT, 52 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 |
|---|---|---|---|---|
| Jul 30, 6:30 PM MDT | Severe Thunderstorm Warning | CYS | Niobrara | 14 min |
| Jul 30, 6:46 PM MDT | Severe Thunderstorm Warning | CYS | Niobrara | 44 min |
| Jul 31, 3:31 AM MDT | Flood Watch | CYS | Albany, Carbon, Converse, Goshen, Laramie, Platte | 20 hr |
| Jul 31, 5:26 AM MDT | Dense Fog Advisory | CYS | Albany, Laramie | 3 hr |
| Jul 31, 1:49 PM MDT | Flood Watch | CYS | Albany, Converse, Goshen, Laramie, Niobrara, Platte | 30 hr |
| Jul 31, 2:54 PM MDT | Special Weather Statement | CYS | Albany | 36 min |
| Jul 31, 3:16 PM MDT | Areal Flood Advisory | CYS | Albany | 3 hr |
| Jul 31, 4:14 PM MDT | Special Weather Statement | CYS | Albany | 31 min |
| Jul 31, 4:58 PM MDT | Special Weather Statement | CYS | Converse | 47 min |
| Jul 30, 6:56 PM MDT | Severe Thunderstorm Warning | CYS | Dawes, Sioux | 34 min |
| Jul 30, 7:37 PM MDT | Severe Thunderstorm Warning | CYS | Morrill | 53 min |
| Jul 30, 7:52 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Dawes, Morrill | 35 min |
| Jul 31, 12:15 AM MDT | Special Weather Statement | CYS | Box Butte | 30 min |
| Jul 31, 12:56 AM MDT | Special Weather Statement | CYS | Morrill | 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.