Alert archive / Nebraska / Flash Flood Warnings in 2020
Flash Flood Warning 7, NWS North Platte, NE
NWS North Platte, NE issued this flash flood warning at Jul 25, 2020, 9:36 PM CDT for Custer County, Logan County, Nebraska. 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 outline as issued.
The facts
- Issued
- Jul 25, 2020, 9:36 PM CDT (02:36 UTC)
- Expired
- Jul 26, 2020, 12:30 AM CDT
- In force
- 3 hr
- Issued by
- NWS North Platte, NE
- Area
- Storm-based polygon
- Flood severity
- None
Counties Custer County, NE, Logan County, NE
The radar
The North Platte radar (KLNX), 69 km from the middle of the area, began a volume at 02:35 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
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.6 hours before the alert went out and 84 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
- 763 J/kg
- Mixed-layer CIN
- -61 J/kg
- Mixed-layer LCL
- 2341 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 89 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted.
212
WGUS53 KLBF 260236
FFWLBF
NEC041-113-260530-
/O.NEW.KLBF.FF.W.0007.200726T0236Z-200726T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service North Platte NE
936 PM CDT Sat Jul 25 2020
The National Weather Service in North Platte has issued a
* Flash Flood Warning for...
Eastern Logan County in west central Nebraska...
Northwestern Custer County in central Nebraska...
* Until 1230 AM CDT.
* At 935 PM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Up to three inches of rain have
already fallen. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
* Some locations that will experience flooding include...
Anselmo, Gandy, Victoria Springs State Recreation Area, Lillian,
Logan, Milburn, Shanklin Bluff, Tarboz Lake, Walworth, Hoagland and
Gates.
Additional rainfall amounts up to 2 inches are possible in the
warned area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4173 9943 4161 9954 4140 10055 4174 10032
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 1 HOUR
$$
Roberg2 follow-up statements
788
WGUS73 KLBF 260345
FFSLBF
Flash Flood Statement
National Weather Service North Platte NE
1045 PM CDT Sat Jul 25 2020
NEC041-113-260530-
/O.CON.KLBF.FF.W.0007.000000T0000Z-200726T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Logan NE-Custer NE-
1045 PM CDT Sat Jul 25 2020
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1230 AM CDT FOR
EASTERN LOGAN AND NORTHWESTERN CUSTER COUNTIES...
At 1043 PM CDT, Doppler radar indicated thunderstorms producing
moderte to heavy rain continued across the warned area. Three to
five inches of rain have already fallen across northwest Custer
County. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other drainage
and low lying areas.
Some locations that will experience flooding include...
Anselmo, Gandy, Victoria Springs State Recreation Area, Lillian,
Logan, Milburn, Shanklin Bluff, Tarboz Lake, Walworth, Hoagland and
Gates.
Additional rainfall amounts of one inch are possible in the warned
area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.
&&
LAT...LON 4173 9943 4161 9954 4140 10055 4174 10032
FLASH FLOOD...RADAR INDICATED
$$
Roberg280 WGUS73 KLBF 260525 FFSLBF Flash Flood Statement National Weather Service North Platte NE 1225 AM CDT Sun Jul 26 2020 NEC041-113-260534- /O.EXP.KLBF.FF.W.0007.000000T0000Z-200726T0530Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Logan NE-Custer NE- 1225 AM CDT Sun Jul 26 2020 ...THE FLASH FLOOD WARNING FOR EASTERN LOGAN AND NORTHWESTERN CUSTER COUNTIES WILL EXPIRE AT 1230 AM CDT... The threat for heavy rain has ended. Flooding is no longer expected to pose a threat. Please continue to heed any remaining road closures. LAT...LON 4173 9943 4161 9954 4140 10055 4174 10032 $$ Buttler
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 25, 7:06 PM CDT | Flash Flood Warning | LBF | Blaine, Brown, Cherry, Thomas | 2 hr |
| Jul 25, 7:14 PM CDT | Severe Thunderstorm Warning | LBF | Blaine, Brown | 46 min |
| Jul 25, 7:19 PM CDT | Areal Flood Advisory | LBF | Hayes, Lincoln | 3 hr |
| Jul 25, 7:26 PM CDT | Severe Thunderstorm Warning | LBF | Arthur, McPherson | 49 min |
| Jul 25, 7:30 PM CDT | Special Weather Statement | LBF | Garden | 45 min |
| Jul 25, 7:40 PM CDT | Special Weather Statement | LBF | Chase | 50 min |
| Jul 25, 8:03 PM CDT | Special Weather Statement | LBF | Loup | 42 min |
| Jul 25, 8:19 PM CDT | Special Weather Statement | LBF | Lincoln | 41 min |
| Jul 25, 8:22 PM CDT | Severe Thunderstorm Warning | LBF | Lincoln | 34 min |
| Jul 25, 8:34 PM CDT | Severe Thunderstorm Warning | LBF | Chase, Keith, Perkins | 44 min |
| Jul 25, 8:51 PM CDT | Severe Thunderstorm Warning | LBF | Keith, Perkins | 39 min |
| Jul 25, 9:06 PM CDT | Special Weather Statement | LBF | Logan | 39 min |
| Jul 25, 9:12 PM CDT | Special Weather Statement | LBF | Loup | 48 min |
| Jul 25, 9:29 PM CDT | Flash Flood Warning | LBF | Keith | 3 hr |
| Jul 25, 10:24 PM CDT | Areal Flood Advisory | LBF | Custer | 3 hr |
Nearby
Flash Flood Warnings in Nebraska, 2020Every flash flood warning in 2020
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.