Alert archive / Nebraska / Flash Flood Warnings in 2019

Flash Flood Warning 8, NWS Omaha, NE

March 14, 20196 counties in Nebraska

NWS Omaha, NE issued this flash flood warning at Mar 14, 2019, 10:54 AM CDT for 6 counties in Nebraska. It was in force for 5 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: Mar 14, 2019, 10:54 AM CDT (15:54 UTC)
Expired: Mar 14, 2019, 3:26 PM CDT
In force: 5 hr
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Emergency: Flash flood emergency
Flood severity: None

Counties Butler County, NE, Colfax County, NE, Dodge County, NE, Douglas County, NE, Sarpy County, NE, Saunders County, NE

The radar

The Omaha radar (KOAX), 22 km from the middle of the area, began a volume at 15:54 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, 3.9 hours before the alert went out and 22 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 478 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 104 m²/s²
0-3 km storm-relative helicity: 114 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Mar 14, 6:22 AM CDT, 4 hours 32 minutes earlier.

Area forecast discussion, Mar 14, 6:22 AM CDT, 4 hours 32 minutes before

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Hazardous weather outlook, Mar 14, 5:51 AM CDT, 5 hours 3 minutes before

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In the hours before

Local storm report, Mar 14, 5:03 AM CDT, 5 hours 51 minutes before

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Local storm report, Mar 14, 5:07 AM CDT, 5 hours 47 minutes before

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Local storm report, Mar 14, 5:58 AM CDT, 4 hours 56 minutes before

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Local storm report, Mar 14, 10:02 AM CDT, 52 minutes before

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Local storm report, Mar 14, 10:44 AM CDT, 10 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
Mar 13, 7:22 PM CDT	Flash Flood Warning Emergency	OAX	Colfax, Dodge	3 hr
Mar 13, 9:15 PM CDT	River Flood Warning	OAX	Antelope	3 days
Mar 13, 9:24 PM CDT	Flash Flood Warning	OAX	Antelope, Boone, Cedar, Colfax, Cuming, Knox and 6 more	12 hr
Mar 13, 10:42 PM CDT	Flash Flood Warning	OAX	Colfax, Dodge	12 hr
Mar 14, 3:40 AM CDT	Winter Weather Advisory	OAX	Antelope, Boone, Cedar, Colfax, Cuming, Knox and 6 more	14 hr
Mar 14, 6:24 PM CDT	Flash Flood Warning	OAX	Boone	12 hr
Mar 14, 6:53 PM CDT	Flash Flood Warning Emergency	OAX	Dodge, Saunders	6 hr

Nearby

Flash Flood Warnings in Nebraska, 2019 Every flash flood warning in 2019

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.