Alert archive / Nebraska / Flash Flood Warnings in 2021
Flash Flood Warning 7, NWS Omaha, NE
NWS Omaha, NE issued this flash flood warning at Jun 25, 2021, 9:37 PM CDT for Cuming County, Nebraska. It was in force for 3 hr. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jun 25, 2021, 9:37 PM CDT (02:37 UTC)
- Expired
- Jun 26, 2021, 1:00 AM CDT
- In force
- 3 hr
- Issued by
- NWS Omaha, NE
- Area
- Storm-based polygon
- Flood severity
- None
County Cuming County, NE
The radar
The Omaha radar (KOAX), 70 km from the middle of the area, began a volume at 02:39 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 25, 11:00 PM CDT | FLASH FLOOD | 6 Nne Dodge, NE | DELAYED REPORT. SEVERAL LOCATIONS WEST OF MONTEREY HAD EVIDENCE OF WATER OVER THE ROAD. STORM TOTAL 4.70 INCHES. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 2.6 hours before the alert went out and 70 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
- 783 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 1289 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- 57 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.4
The text
As transmitted.
797
WGUS53 KOAX 260237
FFWOAX
NEC039-260600-
/O.NEW.KOAX.FF.W.0007.210626T0237Z-210626T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Omaha/Valley NE
937 PM CDT Fri Jun 25 2021
The National Weather Service in Omaha/Valley has issued a
* Flash Flood Warning for...
Southern Cuming County in northeastern Nebraska...
* Until 100 AM CDT.
* At 937 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 2 and 4 inches of rain
have fallen. Additional rainfall amounts of 1 to 2 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
West Point, Beemer and 10 Miles West Of West Point.
Law Enforcement reported several cars stalled along Highway 275 and
side streets in West Point.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 4198 9670 4192 9663 4190 9660 4183 9664
4179 9673 4176 9687 4180 9695 4188 9689
4195 9683
FLASH FLOOD...RADAR INDICATED
$$
Dergan2 follow-up statements
021
WGUS73 KOAX 260407
FFSOAX
Flash Flood Statement
National Weather Service Omaha/Valley NE
1107 PM CDT Fri Jun 25 2021
NEC039-260600-
/O.CON.KOAX.FF.W.0007.000000T0000Z-210626T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cuming NE-
1107 PM CDT Fri Jun 25 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1 AM CDT SATURDAY FOR
SOUTHERN CUMING COUNTY...
At 1107 PM CDT, Doppler radar indicated the thunderstorms that
produced the heavy rain had moved east of the area. Between 2 and 4
inches of rain have fallen.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
West Point and Beemer.
Flood waters should continue to recede through 1 AM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 4198 9670 4192 9663 4190 9660 4183 9664
4179 9673 4176 9687 4180 9695 4188 9689
4195 9683
FLASH FLOOD...RADAR INDICATED
$$
DeWald849
WGUS73 KOAX 260551
FFSOAX
Flash Flood Statement
National Weather Service Omaha/Valley NE
1251 AM CDT Sat Jun 26 2021
NEC039-260601-
/O.EXP.KOAX.FF.W.0007.000000T0000Z-210626T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cuming NE-
1251 AM CDT Sat Jun 26 2021
...FLASH FLOOD WARNING WILL EXPIRE AT 1 AM CDT EARLY THIS MORNING
FOR SOUTHERN CUMING COUNTY...
Flood waters have receded. The heavy rain has ended. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.
LAT...LON 4198 9670 4192 9663 4190 9660 4183 9664
4179 9673 4176 9687 4180 9695 4188 9689
4195 9683
$$
DeWaldThe office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 25, 7:22 PM CDT | Severe Thunderstorm Warning | OAX | Boone | 23 min |
| Jun 25, 7:23 PM CDT | Severe Thunderstorm Warning | OAX | Colfax, Madison, Platte, Stanton | 52 min |
| Jun 25, 7:31 PM CDT | Severe Thunderstorm Warning | OAX | Pawnee, Richardson | 44 min |
| Jun 25, 9:29 PM CDT | Special Weather Statement | OAX | Lancaster | 46 min |
| Jun 25, 10:12 PM CDT | Special Weather Statement | OAX | Cass | 33 min |
Nearby
Flash Flood Warnings in Nebraska, 2021Every flash 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.