Alert archive / Nebraska / Red Flag Warnings in 2026

Red Flag Warning 30, NWS Cheyenne, WY

June 30, 20265 counties in Wyoming; 8 counties in Nebraska

NWS Cheyenne, WY issued this red flag warning at Jun 30, 2026, 12:07 AM MDT for 5 counties in Wyoming; 8 counties in Nebraska. It took effect at Jun 30, 2026, 11:00 AM MDT. It was in force for 8 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 30, 2026, 12:07 AM MDT (06:07 UTC)
In effect from: Jun 30, 2026, 11:00 AM MDT
Expired: Jun 30, 2026, 7:00 PM MDT
In force: 8 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 06:05 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, 6.1 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: 464 J/kg
Mixed-layer CIN: -216 J/kg
Mixed-layer LCL: 2424 m above ground
0-6 km bulk shear: 62 kt
0-1 km storm-relative helicity: -26 m²/s²
0-3 km storm-relative helicity: 46 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.9

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 29, 10:55 PM MDT, 1 hour 12 minutes earlier.

Area forecast discussion, Jun 29, 10:55 PM MDT, 1 hour 12 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 30, 5:34 PM MDT	Special Weather Statement	CYS	Goshen	26 min

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.