Alert archive / Nebraska / Flash Flood Warnings in 2024

Flash Flood Warning 18, NWS Omaha, NE

May 30, 2024Antelope County, Pierce County, Nebraska

NWS Omaha, NE issued this flash flood warning at May 30, 2024, 10:29 PM CDT for Antelope County, Pierce County, Nebraska. It was in force for 6 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 30, 2024, 10:29 PM CDT (03:29 UTC)
Expired: May 31, 2024, 4:11 AM CDT
In force: 6 hr
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Flood severity: None

Counties Antelope County, NE, Pierce County, NE

The radar

The Omaha radar (KOAX), 158 km from the middle of the area, began a volume at 03:31 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, 3.5 hours before the alert went out and 260 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: 1002 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 1557 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 51 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

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 Omaha, NE wrote its last area forecast discussion before this flash flood warning went out at May 30, 6:48 PM CDT, 3 hours 41 minutes earlier.

Area forecast discussion, May 30, 6:48 PM CDT, 3 hours 41 minutes before

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Hazardous weather outlook, May 30, 3:29 PM CDT, 7 hours before

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In the hours before

Local storm report, May 30, 4:49 PM CDT, 5 hours 40 minutes before

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Local storm report, May 30, 6:27 PM CDT, 4 hours 2 minutes before

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Local storm report, May 30, 6:58 PM CDT, 3 hours 31 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 30, 10:07 PM CDT	Severe Thunderstorm Warning	OAX	Antelope, Cedar, Knox, Pierce	38 min
May 31, 4:11 AM CDT	Areal Flood Warning	OAX	Antelope, Pierce	6 hr
May 31, 1:53 PM CDT	Tornado Warning	OAX	Platte	13 min
May 31, 2:18 PM CDT	Tornado Warning Tornado observed	OAX	Colfax, Platte	12 min
May 31, 3:32 PM CDT	Areal Flood Advisory	OAX	Colfax, Cuming, Madison, Platte, Stanton	42 min
May 31, 4:14 PM CDT	Flash Flood Warning	OAX	Colfax, Cuming, Madison, Platte, Stanton	6 hr

Nearby

Flash Flood Warnings in Nebraska, 2024 Every flash flood warning in 2024

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.