Alert archive / Nebraska / Flash Flood Warnings in 2019
Flash Flood Warning 43, NWS Omaha, NE
NWS Omaha, NE issued this flash flood warning at Sep 19, 2019, 4:00 AM CDT for Cuming County, Thurston County, Nebraska; Monona County, Iowa. 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
- Sep 19, 2019, 4:00 AM CDT (09:00 UTC)
- Expired
- Sep 19, 2019, 8:45 AM CDT
- In force
- 5 hr
- Issued by
- NWS Omaha, NE
- Area
- Storm-based polygon
- Flood severity
- None
Counties Monona County, IA, Cuming County, NE, Thurston County, NE
The radar
The Omaha radar (KOAX), 80 km from the middle of the area, began a volume at 09:01 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, 9.0 hours before the alert went out and 80 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
- 2448 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 1305 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 187 m²/s²
- 0-3 km storm-relative helicity
- 381 m²/s²
- Significant tornado parameter
- 2.3
- Supercell composite
- 8.8
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 Sep 19, 3:40 AM CDT, 20 minutes earlier.
Area forecast discussion, Sep 19, 3:40 AM CDT, 20 minutes before
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</html>Hazardous weather outlook, Sep 18, 5:50 PM CDT, 10 hours 10 minutes before
Hazardous Weather Outlook National Weather Service Omaha/Valley NE 550 PM CDT Wed Sep 18 2019 IAZ091-NEZ011-012-015>018-030>033-042>044-050-051-065-066-078- 088>093-191300- Page-Knox-Cedar-Thurston-Antelope-Pierce-Wayne-Boone-Madison- Stanton-Cuming-Platte-Colfax-Dodge-Butler-Saunders-Seward- Lancaster-Saline-Jefferson-Gage-Johnson-Nemaha-Pawnee-Richardson- 550 PM CDT Wed Sep 18 2019 This Hazardous Weather Outlook is for portions of southwest Iowa...east central Nebraska...northeast Nebraska and southeast Nebraska. .DAY ONE...Tonight and Thursday Minor to locally moderate flooding will continue along the Missouri River above Lewis and Clark Lake, and from near Decatur southward past Rulo. Isolated to scattered thunderstorms are possible tonight and Thursday. Some storms may produce large hail through early evening. Lightning, brief downpours of heavy rain and some gusty winds are possible with storms. .DAYS TWO THROUGH SEVEN...Thursday night through Wednesday River levels along the Missouri River will continue to rise from Blair southward past Rulo. A crest is expected in Blair sometime Thursday, while Rulo will not crest until Sunday. Flooding is expected to remain in the minor to moderate range. Road closures are possible along Interstate 29 in Pottawattamie County, with a lesser risk of impacts to Interstate 680. Additional rainfall late this week into the weekend may have impacts on the river level forecasts and the timing of crests. Anyone with travel plans along Interstate 29 or interests along the Missouri River should monitor the forecast closely this week. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed on an isolated bases through early this evening. IAZ043-055-056-069-079-080-090-NEZ034-045-052-053-067-068-191300- Monona-Harrison-Shelby-Pottawattamie-Mills-Montgomery-Fremont- Burt-Washington-Douglas-Sarpy-Cass-Otoe- 550 PM CDT Wed Sep 18 2019 This Hazardous Weather Outlook is for portions of southwest Iowa...west central Iowa...east central Nebraska and southeast Nebraska. .DAY ONE...Tonight and Thursday A flood watch is in effect until Thursday morning. Minor to locally moderate flooding will continue along the Missouri River above Lewis and Clark Lake, and from near Decatur southward past Rulo. Thunderstorms are expected tonight and Thursday. Some storms may produce large hail through early evening. Lightning, downpours of heavy rain and some gusty winds are the main hazards. Rainfall rates of 1 to 2 inches per hour are possible with the stronger storms. Due to recent rains and with flooding ongoing, additional flooding/flash flooding could develop. .DAYS TWO THROUGH SEVEN...Thursday night through Wednesday River levels along the Missouri River will continue to rise from Blair southward past Rulo. A crest is expected in Blair sometime Thursday, while Rulo will not crest until Sunday. Flooding is expected to remain in the minor to moderate range. Road closures are possible along Interstate 29 in Pottawattamie County, with a lesser risk of impacts to Interstate 680. Additional rainfall late this week into the weekend may have impacts on the river level forecasts and the timing of crests. Anyone with travel plans along Interstate 29 or interests along the Missouri River should monitor the forecast closely this week. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed on an isolated basis through early evening. Heavy rainfall reports are appreciated. Zapotocny
In the hours before
Special weather statement, Sep 18, 10:47 PM CDT, 5 hours 13 minutes before
Special Weather Statement National Weather Service Omaha/Valley Nebraska 1047 PM CDT Wed Sep 18 2019 NEZ032-033-190415- Stanton NE-Cuming NE- 1047 PM CDT Wed Sep 18 2019 ...SIGNIFICANT WEATHER ADVISORY FOR WESTERN CUMING AND EAST CENTRAL STANTON COUNTIES UNTIL 1115 PM CDT... At 1046 PM CDT, Doppler radar was tracking a strong thunderstorm 6 miles south of Wisner, or 25 miles east of Norfolk, moving northeast at 25 mph. Penny size hail will be possible with this storm. Locations impacted include... Wisner, Beemer, The Highway 15 And 32 Junction and 10 Miles West Of West Point. LAT...LON 4178 9703 4190 9711 4208 9679 4188 9669 TIME...MOT...LOC 0346Z 241DEG 23KT 4189 9695 HB
Special weather statement, Sep 19, 1:11 AM CDT, 2 hours 49 minutes before
Special Weather Statement
National Weather Service Omaha/Valley Nebraska
111 AM CDT Thu Sep 19 2019
IAZ043-NEZ015-017-018-030>034-190700-
Monona IA-Stanton NE-Thurston NE-Madison NE-Burt NE-Pierce NE-
Boone NE-Cuming NE-Wayne NE-
111 AM CDT Thu Sep 19 2019
...SIGNIFICANT WEATHER ADVISORY FOR MONONA...NORTHERN MADISON...
NORTHERN BURT...WAYNE...NORTHERN CUMING...SOUTHERN PIERCE...
THURSTON...NORTHEASTERN BOONE AND NORTHERN STANTON COUNTIES UNTIL 200
AM CDT...
At 110 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 4 miles north of Elgin to 4 miles northeast of
Pilger to near Moorhead. Movement was northeast at 15 mph.
Very heavy rainfall, penny size hail and winds in excess of 30 mph
will be possible with these storms.
Locations impacted include...
Norfolk, Wayne, Onawa, Pierce, Stanton, Wakefield, Battle Creek,
Wisner, Pender, Lyons, Walthill, Winnebago, Whiting, Beemer,
Bancroft, Decatur, Winside, Ute, Pilger and Meadow Grove.
This includes Interstate 29 between mile markers 101 and 125.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.
&&
LAT...LON 4192 9783 4214 9784 4221 9779 4231 9715
4231 9702 4226 9701 4227 9635 4222 9633
4221 9608 4211 9567 4191 9567 4186 9581
4191 9670 4188 9737 4190 9800
TIME...MOT...LOC 0610Z 241DEG 15KT 4205 9807 4207 9702 4190 9588
KGLocal storm report, Sep 19, 1:52 AM CDT, 2 hours 8 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 |
|---|---|---|---|---|
| Sep 18, 7:06 PM CDT | Special Weather Statement | OAX | Cass | 24 min |
| Sep 18, 7:34 PM CDT | Severe Thunderstorm Warning | OAX | Cass, Lancaster, Otoe, Saunders | 26 min |
| Sep 18, 8:04 PM CDT | Severe Thunderstorm Warning | OAX | Cass, Lancaster | 20 min |
| Sep 18, 9:12 PM CDT | Special Weather Statement | OAX | Dodge | 33 min |
| Sep 18, 9:15 PM CDT | Severe Thunderstorm Warning | OAX | Colfax, Cuming, Dodge | 30 min |
| Sep 18, 9:58 PM CDT | Flash Flood Warning | OAX | Colfax, Cuming, Dodge | 3 hr |
| Sep 18, 10:47 PM CDT | Special Weather Statement | OAX | Cuming | 28 min |
| Sep 19, 12:29 AM CDT | Flash Flood Warning | OAX | Burt, Cuming, Stanton, Thurston, Wayne | 10 hr |
| Sep 19, 1:11 AM CDT | Special Weather Statement | OAX | Cuming, Madison, Stanton, Thurston, Wayne | 49 min |
| Sep 19, 2:40 AM CDT | Flash Flood Warning | OAX | Pierce, Stanton, Wayne | 6 hr |
| Sep 19, 2:46 AM CDT | Flash Flood Warning | OAX | Burt, Thurston | 6 hr |
| Sep 19, 4:05 AM CDT | Flash Flood Warning | OAX | Cedar, Pierce, Wayne | 5 hr |
| Sep 19, 4:47 AM CDT | Special Weather Statement | OAX | Burt, Douglas, Sarpy, Washington | 43 min |
| Sep 19, 5:06 AM CDT | Flash Flood Warning | OAX | Burt, Douglas, Washington | 6 hr |
| Sep 19, 5:52 AM CDT | Areal Flood Advisory | OAX | Douglas, Sarpy | 3 hr |
| Sep 19, 6:56 AM CDT | Flash Flood Warning | OAX | Douglas, Sarpy, Saunders | 4 hr |
| Sep 19, 9:37 AM CDT | Areal Flood Warning | OAX | Burt, Cedar, Colfax, Cuming, Dodge, Douglas and 6 more | 6 hr |
| Sep 19, 11:02 AM CDT | Areal Flood Warning | OAX | Douglas, Sarpy | 5 hr |
Nearby
Flash Flood Warnings in Nebraska, 2019Flash Flood Warnings in Iowa, 2019Every 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.