Alert archive / Nebraska / Flash Flood Warnings in 2023
Flash Flood Warning 21, NWS Cheyenne, WY
NWS Cheyenne, WY issued this flash flood warning at Jun 28, 2023, 7:43 PM MDT for Kimball County, Nebraska. It was in force for 63 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 28, 2023, 7:43 PM MDT (01:43 UTC)
- Expired
- Jun 28, 2023, 8:46 PM MDT
- In force
- 63 min
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Flood severity
- None
County Kimball County, NE
The radar
The Cheyenne radar (KCYS), 97 km from the middle of the area, began a volume at 01:44 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, 1.7 hours before the alert went out and 255 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
- 1288 J/kg
- Mixed-layer CIN
- -166 J/kg
- Mixed-layer LCL
- 2112 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- -30 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted.
753
WGUS55 KCYS 290143
FFWCYS
NEC105-290445-
/O.NEW.KCYS.FF.W.0021.230629T0143Z-230629T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Cheyenne WY
743 PM MDT Wed Jun 28 2023
The National Weather Service in Cheyenne has issued a
* Flash Flood Warning for...
Northeastern Kimball County in the Panhandle of Nebraska...
* Until 1045 PM MDT.
* At 742 PM MDT, Doppler radar indicated thunderstorms producing
heavy rain across the Kimball area. 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...
Kimball.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4125 10363 4121 10363 4121 10367 4125 10367
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-3 INCHES IN 1 HOUR
$$
Cox1 follow-up statement
102 WGUS75 KCYS 290246 FFSCYS Flash Flood Statement National Weather Service Cheyenne WY 846 PM MDT Wed Jun 28 2023 NEC105-290256- /O.CAN.KCYS.FF.W.0021.000000T0000Z-230629T0445Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Kimball NE- 846 PM MDT Wed Jun 28 2023 ...FLASH FLOOD WARNING IS CANCELLED FOR NORTHEASTERN KIMBALL COUNTY... Flood waters have receded. The heavy rain has ended. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. LAT...LON 4125 10363 4121 10363 4121 10367 4125 10367 $$ Cox
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 28, 6:09 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne, Kimball | 81 min |
| Jun 28, 6:14 PM MDT | Tornado Warning | CYS | Kimball | 31 min |
| Jun 28, 6:18 PM MDT | Special Weather Statement | CYS | Dawes | 42 min |
| Jun 28, 6:20 PM MDT | Severe Thunderstorm Warning | CYS | Banner, Kimball | 40 min |
| Jun 28, 6:43 PM MDT | Tornado Warning | CYS | Kimball | 32 min |
| Jun 28, 6:46 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne, Kimball | 59 min |
| Jun 28, 6:58 PM MDT | Special Weather Statement | CYS | Cheyenne | 47 min |
| Jun 28, 6:58 PM MDT | Tornado Warning | CYS | Cheyenne, Kimball | 32 min |
| Jun 28, 7:10 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne | 65 min |
| Jun 28, 7:40 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne, Kimball | 45 min |
| Jun 28, 7:53 PM MDT | Special Weather Statement | CYS | Banner | 52 min |
| Jun 28, 10:46 PM MDT | Special Weather Statement | CYS | Kimball | 29 min |
| Jun 29, 4:12 PM MDT | Special Weather Statement | CYS | Sioux | 33 min |
| Jun 29, 4:50 PM MDT | Special Weather Statement | CYS | Sioux | 25 min |
| Jun 29, 5:04 PM MDT | Severe Thunderstorm Warning | CYS | Banner, Scotts Bluff | 71 min |
| Jun 29, 5:13 PM MDT | Special Weather Statement | CYS | Dawes | 32 min |
| Jun 29, 5:46 PM MDT | Special Weather Statement | CYS | Box Butte, Dawes | 59 min |
Nearby
Flash Flood Warnings in Nebraska, 2023Every flash flood warning in 2023
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.