Alert archive / Nebraska / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 362, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Aug 8, 2023, 3:59 PM MDT for Box Butte County, Morrill 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
- Aug 8, 2023, 3:59 PM MDT (21:59 UTC)
- Expired
- Aug 8, 2023, 4:30 PM MDT
- In force
- 31 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Damage threat
- Considerable
- Hail
- 1.75 in
- Wind
- 50.0 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 21:59 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 |
|---|---|---|---|
| Aug 8, 2:37 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.0 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
- 4 J/kg
- Mixed-layer CIN
- -289 J/kg
- Mixed-layer LCL
- 695 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 205 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
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 Aug 8, 3:31 PM MDT, 28 minutes earlier.
Area forecast discussion, Aug 8, 3:31 PM MDT, 28 minutes before
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</html>Hazardous weather outlook, Aug 8, 2:53 PM MDT, 1 hour 6 minutes before
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Special weather statement, Aug 8, 2:38 PM MDT, 1 hour 21 minutes before
Special Weather Statement
National Weather Service Cheyenne WY
238 PM MDT Tue Aug 8 2023
WYZ117>119-082100-
Central Laramie County WY-South Laramie Range Foothills WY-
East Laramie County WY-
238 PM MDT Tue Aug 8 2023
...A strong thunderstorm will impact portions of south central
Laramie County through 300 PM MDT...
At 237 PM MDT, Doppler radar was tracking a strong thunderstorm over
Frontier Park, or over Cheyenne, moving east at 30 mph.
HAZARD...Winds in excess of 40 mph and penny size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Cheyenne, South Greeley, Ranchettes, Warren AFB, Frontier Park, North
Cheyenne, Warren Af Base, Fox Farm-College and South Greeley High.
This includes the following highways...
Interstate 25 in Wyoming between mile markers 2 and 19.
Interstate 80 in Wyoming between mile markers 357 and 379.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
A Severe Thunderstorm Watch remains in effect until 1000 PM MDT for
southeastern Wyoming.
&&
LAT...LON 4102 10492 4126 10491 4130 10450 4102 10447
TIME...MOT...LOC 2037Z 269DEG 26KT 4115 10482
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...40 MPH
FullerLocal storm report, Aug 8, 2:42 PM MDT, 1 hour 17 minutes before
Preliminary Local Storm Report
National Weather Service Cheyenne WY
242 PM MDT Tue Aug 8 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0238 PM Hail 2 E Cheyenne 41.15N 104.75W
08/08/2023 M0.88 inch Laramie WY Storm Chaser
&&Local storm report, Aug 8, 2:43 PM MDT, 1 hour 16 minutes before
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</html>Local storm report, Aug 8, 2:48 PM MDT, 1 hour 11 minutes before
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</html>Special weather statement, Aug 8, 3:10 PM MDT, 49 minutes before
Special Weather Statement
National Weather Service Cheyenne WY
310 PM MDT Tue Aug 8 2023
NEZ003-021-082145-
Box Butte NE-Morrill NE-
310 PM MDT Tue Aug 8 2023
...A strong thunderstorm will impact portions of southeastern Box
Butte and northeastern Morrill Counties through 345 PM MDT...
At 309 PM MDT, Doppler radar was tracking a strong thunderstorm 8
miles southwest of Alliance, moving east at 20 mph.
HAZARD...Wind gusts up to 50 mph and penny size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Alliance and Alliance Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
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 1000 PM MDT for
the Panhandle of Nebraska.
&&
LAT...LON 4191 10312 4207 10309 4213 10274 4210 10274
4209 10271 4207 10270 4201 10270 4200 10267
4183 10268
TIME...MOT...LOC 2109Z 261DEG 19KT 4200 10298
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH
TrudelSpecial weather statement, Aug 8, 3:36 PM MDT, 23 minutes before
Special Weather Statement
National Weather Service Cheyenne WY
336 PM MDT Tue Aug 8 2023
NEZ020-054-082200-
Kimball NE-Banner NE-
336 PM MDT Tue Aug 8 2023
...A strong thunderstorm will impact portions of northwestern Kimball
and south central Banner Counties through 400 PM MDT...
At 335 PM MDT, Doppler radar was tracking a strong thunderstorm 8
miles north of Oliver Campground, or 11 miles northwest of Kimball,
moving east at 20 mph.
HAZARD...Winds in excess of 30 mph and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Kimball.
This includes Interstate 80 in Nebraska between mile markers 21 and
22.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
A Severe Thunderstorm Watch remains in effect until 1000 PM MDT for
the Panhandle of Nebraska.
&&
LAT...LON 4127 10392 4145 10389 4145 10357 4121 10363
TIME...MOT...LOC 2135Z 276DEG 16KT 4135 10382
MAX HAIL SIZE...0.88 IN
MAX WIND GUST...30 MPH
FullerThe office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 8, 2:38 PM MDT | Special Weather Statement | CYS | Laramie | 22 min |
| Aug 8, 4:52 PM MDT | Special Weather Statement | CYS | Goshen | 23 min |
| Aug 8, 5:39 PM MDT | Special Weather Statement | CYS | Platte | 36 min |
| Aug 7, 6:03 PM MDT | Severe Thunderstorm Warning | CYS | Dawes | 42 min |
| Aug 7, 6:41 PM MDT | Severe Thunderstorm Warning | CYS | Dawes | 49 min |
| Aug 7, 6:51 PM MDT | Special Weather Statement | CYS | Box Butte | 39 min |
| Aug 7, 7:16 PM MDT | Severe Thunderstorm Warning | CYS | Dawes | 44 min |
| Aug 8, 3:10 PM MDT | Special Weather Statement | CYS | Morrill | 35 min |
| Aug 8, 3:20 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Morrill | 40 min |
| Aug 8, 3:23 PM MDT | Severe Thunderstorm Warning | CYS | Morrill | 37 min |
| Aug 8, 3:36 PM MDT | Special Weather Statement | CYS | Kimball | 24 min |
| Aug 8, 4:29 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Morrill | 46 min |
| Aug 8, 4:48 PM MDT | Special Weather Statement | CYS | Cheyenne | 42 min |
| Aug 8, 5:01 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne, Morrill | 29 min |
| Aug 8, 5:22 PM MDT | Special Weather Statement | CYS | Box Butte | 23 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.