Alert archive / Nebraska / Red Flag Warnings in 2026

Red Flag Warning 27, NWS Cheyenne, WY

June 15, 20265 counties in Wyoming; 8 counties in Nebraska

NWS Cheyenne, WY issued this red flag warning at Jun 15, 2026, 8:57 PM MDT for 5 counties in Wyoming; 8 counties in Nebraska. It took effect at Jun 16, 2026, 12:00 PM MDT. It was in force for 34 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: Jun 15, 2026, 8:57 PM MDT (02:57 UTC)
In effect from: Jun 16, 2026, 12:00 PM MDT
Expired: Jun 17, 2026, 10:00 PM MDT
In force: 34 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, Converse County, WY, Goshen County, WY, Laramie County, WY, Niobrara County, WY, Platte County, WY

The radar

The Cheyenne radar (KCYS), 123 km from the middle of the area, began a volume at 02:59 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 nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 3.0 hours before the alert went out and 295 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 3012 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 41 m²/s²
0-3 km storm-relative helicity: 74 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 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 Jun 15, 5:04 PM MDT, 3 hours 53 minutes earlier.

Area forecast discussion, Jun 15, 5:04 PM MDT, 3 hours 53 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 16, 12:21 AM MDT	High Wind Warning	CYS	Albany, Carbon, Laramie, Platte	39 hr

Nearby

Red Flag Warnings in Nebraska, 2026 Red Flag Warnings in Wyoming, 2026 Every 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.