Alert archive / Nebraska / Flash Flood Warnings in 2024

Flash Flood Warning 6, NWS Omaha, NE

April 27, 2024Richardson County, Nebraska

NWS Omaha, NE issued this flash flood warning at Apr 27, 2024, 3:32 PM CDT for Richardson County, Nebraska. It was in force for 110 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 27, 2024, 3:32 PM CDT (20:32 UTC)
Expired: Apr 27, 2024, 5:22 PM CDT
In force: 110 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Flood severity: None

County Richardson County, NE

The radar

The Topeka radar (KTWX), 133 km from the middle of the area, began a volume at 20:35 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

Topeka, KS (KTOP), launched 12:00Z, 8.5 hours before the alert went out and 125 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: 1585 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 634 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 175 m²/s²
0-3 km storm-relative helicity: 179 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 6.9

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 Apr 27, 1:40 PM CDT, 1 hour 52 minutes earlier.

Area forecast discussion, Apr 27, 1:40 PM CDT, 1 hour 52 minutes before

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Hazardous weather outlook, Apr 27, 11:58 AM CDT, 3 hours 34 minutes before

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In the hours before

Local storm report, Apr 27, 12:30 PM CDT, 3 hours 2 minutes before

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Local storm report, Apr 27, 12:35 PM CDT, 2 hours 57 minutes before

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Local storm report, Apr 27, 12:51 PM CDT, 2 hours 41 minutes before

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Local storm report, Apr 27, 2:50 PM CDT, 42 minutes before

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Local storm report, Apr 27, 2:51 PM CDT, 41 minutes before

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Local storm report, Apr 27, 3:17 PM CDT, 15 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
Apr 27, 3:29 AM CDT	Flood Watch	OAX	Antelope, Boone, Burt, Butler, Cass, Colfax and 19 more	18 hr
Apr 27, 1:23 PM CDT	Severe Thunderstorm Warning	OAX	Nemaha, Richardson	37 min
Apr 27, 1:57 PM CDT	Severe Thunderstorm Warning	OAX	Richardson	37 min
Apr 27, 2:17 PM CDT	Tornado Warning	OAX	Richardson	17 min
Apr 27, 3:35 PM CDT	Areal Flood Advisory	OAX	Lancaster	3 hr
Apr 26, 7:02 PM CDT	Tornado Warning	OAX	Shelby	43 min
Apr 26, 7:05 PM CDT	Severe Thunderstorm Warning	OAX	Pottawattamie, Shelby	25 min
Apr 26, 7:08 PM CDT	Tornado Warning	OAX	Pottawattamie, Shelby	33 min
Apr 26, 7:36 PM CDT	Areal Flood Advisory	OAX	Harrison, Shelby	3 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.