Alert archive / Nebraska / Red Flag Warnings in 2026
Red Flag Warning 23, NWS Cheyenne, WY
NWS Cheyenne, WY issued this red flag warning at May 13, 2026, 12:50 AM MDT for 8 counties in Nebraska. It took effect at May 13, 2026, 12:00 PM MDT. It was in force for 54 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 13, 2026, 12:50 AM MDT (06:50 UTC)
- In effect from
- May 13, 2026, 12:00 PM MDT
- Expired
- May 15, 2026, 5:55 PM MDT
- In force
- 54 hr
- Issued by
- NWS Cheyenne, WY
Counties Banner County, NE, Box Butte County, NE, Cheyenne County, NE, Dawes County, NE, Kimball County, NE, Morrill County, NE, Scotts Bluff County, NE, Sioux County, NE
The radar
The Cheyenne radar (KCYS), 142 km from the middle of the area, began a volume at 06:47 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, 6.8 hours before the alert went out and 246 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3133 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- -26 m²/s²
- 0-3 km storm-relative helicity
- 83 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this red flag 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 red flag warning went out at May 12, 11:22 PM MDT, 1 hour 28 minutes earlier.
Area forecast discussion, May 12, 11:22 PM MDT, 1 hour 28 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 |
|---|---|---|---|---|
| May 13, 12:58 AM MDT | High Wind Watch | CYS | Albany, Carbon, Laramie, Platte | 10 hr |
| May 13, 10:41 AM MDT | High Wind Warning | CYS | Albany, Carbon, Laramie, Platte | 31 hr |
| May 13, 2:33 PM MDT | Special Weather Statement | CYS | Goshen | 27 min |
| May 13, 3:15 PM MDT | Special Weather Statement | CYS | Platte | 45 min |
| May 13, 4:17 PM MDT | Special Weather Statement | CYS | Niobrara | 28 min |
| May 13, 5:20 PM MDT | Special Weather Statement | CYS | Converse | 25 min |
| May 13, 5:22 PM MDT | Special Weather Statement | CYS | Carbon | 38 min |
Nearby
Red Flag Warnings in Nebraska, 2026Every red flag warning in 2026
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.