Alert archive / Nebraska / Flash Flood Warnings in 2026

Flash Flood Warning 7, NWS Hastings, NE

August 19, 2026Greeley County, Nance County, Nebraska

NWS Hastings, NE issued this flash flood warning at Aug 19, 2026, 12:26 PM CDT for Greeley County, Nance County, Nebraska. It was in force for 7 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: Aug 19, 2026, 12:26 PM CDT (17:26 UTC)
Expired: Aug 19, 2026, 7:00 PM CDT
In force: 7 hr
Issued by: NWS Hastings, NE
Area: Storm-based polygon
Flood severity: None

Counties Greeley County, NE, Nance County, NE

The radar

The Grand Island radar (KUEX), 130 km from the middle of the area, began a volume at 17:27 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 12:00Z, 5.4 hours before the alert went out and 158 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: 819 J/kg
Mixed-layer CIN: -60 J/kg
Mixed-layer LCL: 838 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 33 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Hastings, NE wrote its last area forecast discussion before this flash flood warning went out at Aug 18, 6:53 PM CDT, 17 hours 33 minutes earlier.

Area forecast discussion, Aug 18, 6:53 PM CDT, 17 hours 33 minutes before

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Hazardous weather outlook, Aug 18, 5:40 PM CDT, 18 hours 46 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 19, 8:48 AM CDT	Special Weather Statement	GID	Hamilton	42 min
Aug 19, 9:56 AM CDT	Severe Thunderstorm Warning	GID	Greeley, Valley	64 min
Aug 19, 10:57 AM CDT	Severe Thunderstorm Warning Considerable damage threat	GID	Greeley, Howard, Merrick, Nance, Valley	48 min
Aug 19, 11:12 AM CDT	Severe Thunderstorm Warning Destructive damage threat	GID	Greeley, Howard, Merrick, Nance	48 min
Aug 19, 11:19 AM CDT	Severe Thunderstorm Warning	GID	Merrick, Nance, Polk	41 min
Aug 19, 11:35 AM CDT	Severe Thunderstorm Warning Considerable damage threat	GID	Howard, Merrick, Nance, Sherman, Valley	40 min
Aug 19, 11:57 AM CDT	Severe Thunderstorm Warning	GID	Merrick, Nance, Polk	48 min
Aug 19, 12:08 PM CDT	Severe Thunderstorm Warning	GID	Hall, Hamilton, Howard, Merrick, Polk, York	52 min
Aug 19, 12:39 PM CDT	Severe Thunderstorm Warning	GID	Hamilton, Polk, York	66 min
Aug 19, 1:14 PM CDT	Special Weather Statement	GID	Clay	31 min
Aug 19, 1:25 PM CDT	Severe Thunderstorm Warning	GID	Fillmore, York	31 min

Nearby

Flash Flood Warnings in Nebraska, 2026 Every 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.