Alert archive / Nebraska / Flash Flood Warnings in 2026

Flash Flood Warning 24, NWS Omaha, NE

June 30, 2026Antelope County, Boone County, Nebraska

NWS Omaha, NE issued this flash flood warning at Jun 30, 2026, 12:02 AM CDT for Antelope County, Boone County, Nebraska. It was in force for 3 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, 12:02 AM CDT (05:02 UTC)
Expired
Jun 30, 2026, 2:46 AM CDT
In force
3 hr
Issued by
NWS Omaha, NE
Area
Storm-based polygon
Flood severity
None

Counties Antelope County, NE, Boone County, NE

The radar

The Omaha radar (KOAX), 157 km from the middle of the area, began a volume at 05:06 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

Omaha, NE (KOAX), launched 00:00Z, 5.0 hours before the alert went out and 157 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-pSkew-T log-p diagram, Omaha, NE at 00:00Z on 2026-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4501 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 00:00Z on 2026-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 98 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
4501 J/kg
Mixed-layer CIN
-76 J/kg
Mixed-layer LCL
1328 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
98 m²/s²
0-3 km storm-relative helicity
142 m²/s²
Significant tornado parameter
0.0
Supercell composite
9.7

Open this sounding in Storm Lab

The office that day

Everything else NWS Omaha, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 29, 7:06 PM CDTSevere Thunderstorm WarningOAXCedar, Knox39 min
Jun 29, 7:18 PM CDTSevere Thunderstorm WarningOAXKnox42 min
Jun 29, 7:47 PM CDTSevere Thunderstorm Warning Considerable damage threatOAXCedar, Knox43 min
Jun 29, 8:30 PM CDTSevere Thunderstorm WarningOAXCedar28 min
Jun 29, 9:35 PM CDTSevere Thunderstorm WarningOAXBoone25 min
Jun 29, 9:58 PM CDTSevere Thunderstorm WarningOAXBoone47 min
Jun 29, 10:13 PM CDTSevere Thunderstorm WarningOAXBoone, Madison, Platte35 min
Jun 29, 10:52 PM CDTSevere Thunderstorm WarningOAXAntelope, Boone38 min
Jun 29, 11:09 PM CDTSevere Thunderstorm WarningOAXAntelope, Boone51 min
Jun 29, 11:43 PM CDTSevere Thunderstorm WarningOAXAntelope, Boone, Madison, Pierce47 min
Jun 29, 11:59 PM CDTSevere Thunderstorm Warning Considerable damage threatOAXMadison, Pierce46 min
Jun 30, 12:00 AM CDTSevere Thunderstorm Warning Considerable damage threatOAXCuming, Stanton, Wayne45 min
Jun 30, 12:21 AM CDTSevere Thunderstorm Warning Considerable damage threatOAXCedar, Pierce, Wayne39 min
Jun 30, 12:27 AM CDTSevere Thunderstorm WarningOAXAntelope, Knox48 min
Jun 30, 12:40 AM CDTSevere Thunderstorm Warning Considerable damage threatOAXCuming, Stanton, Thurston, Wayne50 min
Jun 30, 12:45 AM CDTSevere Thunderstorm WarningOAXAntelope30 min
Jun 30, 12:50 AM CDTSevere Thunderstorm WarningOAXKnox25 min
Jun 30, 1:18 AM CDTAreal Flood AdvisoryOAXAntelope, Boone3 hr
Jun 30, 1:43 AM CDTSevere Thunderstorm WarningOAXAntelope, Pierce25 min
Jun 30, 2:00 AM CDTSevere Thunderstorm WarningOAXAntelope, Boone17 min

Nearby

Flash Flood Warnings in Nebraska, 2026Every flash flood 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.