Alert archive / Nebraska / Areal Flood Warnings in 2021

Areal Flood Warning 7, NWS Omaha, NE

March 15, 2021Butler County, Nebraska

NWS Omaha, NE issued this areal flood warning at Mar 15, 2021, 1:16 PM CDT for Butler County, Nebraska. It was in force for 45 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 15, 2021, 1:16 PM CDT (18:16 UTC)
Expired: Mar 17, 2021, 10:15 AM CDT
In force: 45 hr
Issued by: NWS Omaha, NE
Area: Storm-based polygon
Flood severity: None

County Butler County, NE

The radar

The Omaha radar (KOAX), 65 km from the middle of the area, began a volume at 18:16 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, 6.3 hours before the alert went out and 278 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: 685 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 126 m²/s²
0-3 km storm-relative helicity: 178 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 areal 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 areal flood warning went out at Mar 15, 12:26 PM CDT, 50 minutes earlier.

Area forecast discussion, Mar 15, 12:26 PM CDT, 50 minutes before

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Hazardous weather outlook, Mar 15, 11:31 AM CDT, 1 hour 45 minutes before

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In the hours before

Local storm report, Mar 15, 10:20 AM CDT, 2 hours 56 minutes before

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Local storm report, Mar 15, 10:22 AM CDT, 2 hours 54 minutes before

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Local storm report, Mar 15, 10:28 AM CDT, 2 hours 48 minutes before

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Local storm report, Mar 15, 10:37 AM CDT, 2 hours 39 minutes before

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Local storm report, Mar 15, 10:44 AM CDT, 2 hours 32 minutes before

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Local storm report, Mar 15, 10:55 AM CDT, 2 hours 21 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 14, 8:41 PM CDT	River Flood Warning	OAX	Seward	4 days
Mar 14, 8:48 PM CDT	River Flood Warning	OAX	Saunders	5 hr
Mar 14, 10:51 PM CDT	Winter Weather Advisory	OAX	Antelope, Cedar, Knox, Pierce, Wayne	11 hr
Mar 14, 11:47 PM CDT	River Flood Warning	OAX	Gage	43 hr
Mar 14, 11:50 PM CDT	River Flood Warning	OAX	Gage	10 hr
Mar 15, 6:40 AM CDT	Areal Flood Advisory	OAX	Butler	7 hr

Nearby

Areal Flood Warnings in Nebraska, 2021 Every areal flood warning in 2021

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.