Alert archive / Nebraska / Flash Flood Warnings in 2024
Flash Flood Warning 38, NWS Omaha, NE
NWS Omaha, NE issued this flash flood warning at Aug 14, 2024, 3:58 AM CDT for Douglas County, Sarpy County, Nebraska; Mills County, Pottawattamie County, Iowa. 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
- Aug 14, 2024, 3:58 AM CDT (08:58 UTC)
- Expired
- Aug 14, 2024, 7:00 AM CDT
- In force
- 3 hr
- Issued by
- NWS Omaha, NE
- Area
- Storm-based polygon
- Flood severity
- None
Counties Mills County, IA, Pottawattamie County, IA, Douglas County, NE, Sarpy County, NE
The radar
The Omaha radar (KOAX), 45 km from the middle of the area, began a volume at 08:59 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, 9.0 hours before the alert went out and 397 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.
- Mixed-layer CAPE
- 608 J/kg
- Mixed-layer CIN
- -164 J/kg
- Mixed-layer LCL
- 889 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 165 m²/s²
- 0-3 km storm-relative helicity
- 191 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 4.2
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 Aug 14, 12:43 AM CDT, 3 hours 15 minutes earlier.
Area forecast discussion, Aug 14, 12:43 AM CDT, 3 hours 15 minutes before
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</html>Hazardous weather outlook, Aug 13, 8:28 PM CDT, 7 hours 30 minutes before
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</html>The office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 3:17 AM CDT | Areal Flood Advisory | OAX | Cass, Douglas, Sarpy | 3 hr |
| Aug 14, 5:10 PM CDT | Flood Watch | OAX | Cass, Douglas, Sarpy | 9 hr |
| Aug 14, 6:05 PM CDT | Severe Thunderstorm Warning | OAX | Gage, Jefferson | 40 min |
| Aug 14, 6:40 PM CDT | Severe Thunderstorm Warning | OAX | Gage, Jefferson | 35 min |
| Aug 14, 6:45 PM CDT | Tornado Warning | OAX | Gage | 16 min |
Nearby
Flash Flood Warnings in Nebraska, 2024Flash Flood Warnings in Iowa, 2024Every 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.