Alert archive / Nebraska / Flash Flood Warnings in 2022

Flash Flood Warning 7, NWS Omaha, NE

June 15, 20225 counties in Nebraska; Mills County, Pottawattamie County, Iowa

NWS Omaha, NE issued this flash flood warning at Jun 15, 2022, 1:00 AM CDT for 5 counties in 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: Jun 15, 2022, 1:00 AM CDT (06:00 UTC)
Expired: Jun 15, 2022, 3:39 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, Cass County, NE, Douglas County, NE, Lancaster County, NE, Sarpy County, NE, Saunders County, NE

The radar

The Omaha radar (KOAX), 32 km from the middle of the area, began a volume at 06:01 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 00:00Z, 6.0 hours before the alert went out and 32 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: 1265 J/kg
Mixed-layer CIN: -109 J/kg
Mixed-layer LCL: 2112 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 230 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.7

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 Jun 15, 12:26 AM CDT, 34 minutes earlier.

Area forecast discussion, Jun 15, 12:26 AM CDT, 34 minutes before

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Hazardous weather outlook, Jun 14, 7:14 PM CDT, 5 hours 46 minutes before

Hazardous Weather Outlook
National Weather Service Omaha/Valley NE
714 PM CDT Tue Jun 14 2022

IAZ043-055-056-069-079-080-090-091-NEZ011-012-015>018-030>034-
042>045-050>053-065>068-078-088>093-151415-
Monona-Harrison-Shelby-Pottawattamie-Mills-Montgomery-Fremont-
Page-Knox-Cedar-Thurston-Antelope-Pierce-Wayne-Boone-Madison-
Stanton-Cuming-Burt-Platte-Colfax-Dodge-Washington-Butler-
Saunders-Douglas-Sarpy-Seward-Lancaster-Cass-Otoe-Saline-
Jefferson-Gage-Johnson-Nemaha-Pawnee-Richardson-
714 PM CDT Tue Jun 14 2022

This Hazardous Weather Outlook is for portions of southwest
Iowa...west central Iowa...east central Nebraska...northeast
Nebraska and southeast Nebraska.

.DAY ONE...Tonight and Wednesday

Scattered thunderstorms developing along a frontal boundary over
southeast Nebraska and southwest Iowa, will continue to drifting
northward through the overnight hours. Large hail, damaging winds,
and locally heavy rainfall are the primary hazards.

.DAYS TWO THROUGH SEVEN...Wednesday night through Tuesday

Thunderstorms may redevelop on Thursday evening south of the
Platte River. Severe weather is possible.

Hot and humid weather can be expected Saturday through Monday
with daytime highs again in the upper 90s to lower 100s.

.SPOTTER INFORMATION STATEMENT...

Widespread spotter activation will probably not be needed tonight,
but spotters are encouraged to report severe weather if it
develops in your area.

In the hours before

Local storm report, Jun 15, 12:40 AM CDT, 20 minutes before

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Local storm report, Jun 15, 12:41 AM CDT, 19 minutes before

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Local storm report, Jun 15, 12:42 AM CDT, 18 minutes before

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Local storm report, Jun 15, 12:46 AM CDT, 14 minutes before

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Local storm report, Jun 15, 12:47 AM CDT, 13 minutes before

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Local storm report, Jun 15, 12:54 AM CDT, 6 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
Jun 14, 7:33 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Jefferson, Johnson	42 min
Jun 14, 8:11 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Johnson	17 min
Jun 14, 8:35 PM CDT	Severe Thunderstorm Warning	OAX	Cass	40 min
Jun 14, 9:54 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	Butler, Seward	66 min
Jun 14, 10:30 PM CDT	Tornado Warning	OAX	Lancaster, Seward	34 min
Jun 14, 11:01 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	Cass, Lancaster, Sarpy, Saunders	44 min
Jun 14, 11:09 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	Cass, Lancaster, Otoe	36 min
Jun 14, 11:27 PM CDT	Tornado Warning	OAX	Cass, Sarpy	21 min
Jun 14, 11:39 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Douglas, Otoe, Sarpy, Saunders	51 min
Jun 15, 12:08 AM CDT	Areal Flood Advisory	OAX	Douglas, Sarpy	58 min
Jun 15, 12:35 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	Butler, Lancaster, Seward	40 min
Jun 15, 1:00 AM CDT	Severe Thunderstorm Warning	OAX	Cedar, Knox	25 min
Jun 15, 1:12 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	Butler, Lancaster, Saunders, Seward	48 min
Jun 15, 1:52 AM CDT	Severe Thunderstorm Warning	OAX	Dodge, Douglas, Saunders, Washington	17 min
Jun 15, 2:23 AM CDT	Special Weather Statement	OAX	Butler	22 min
Jun 15, 2:34 AM CDT	Special Weather Statement	OAX	Butler	11 min
Jun 15, 2:47 AM CDT	Special Weather Statement	OAX	Saunders	13 min
Jun 15, 2:59 AM CDT	Special Weather Statement	OAX	Saunders	16 min
Jun 15, 3:04 AM CDT	Severe Thunderstorm Warning	OAX	Butler, Colfax, Platte	41 min
Jun 15, 3:37 AM CDT	Severe Thunderstorm Warning	OAX	Butler, Colfax, Dodge, Saunders	42 min
Jun 15, 4:07 AM CDT	Severe Thunderstorm Warning	OAX	Burt, Dodge, Washington	30 min
Jun 14, 9:07 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	Mills, Montgomery, Pottawattamie	38 min
Jun 14, 9:39 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	Montgomery, Pottawattamie	19 min
Jun 14, 10:10 PM CDT	Severe Thunderstorm Warning	OAX	Pottawattamie	11 min
Jun 15, 12:02 AM CDT	Severe Thunderstorm Warning Destructive damage threat	OAX	Fremont, Mills, Montgomery, Page, Pottawattamie	43 min
Jun 15, 12:11 AM CDT	Tornado Warning	OAX	Mills, Montgomery	17 min
Jun 15, 12:22 AM CDT	Tornado Warning	OAX	Mills, Pottawattamie	21 min
Jun 15, 12:40 AM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	Mills, Montgomery, Pottawattamie	22 min

Nearby

Flash Flood Warnings in Nebraska, 2022 Flash Flood Warnings in Iowa, 2022 Every flash flood warning in 2022

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.