Alert archive / Nebraska / Flash Flood Warnings in 2011
Flash Flood Warning 7, NWS Cheyenne, WY
NWS Cheyenne, WY issued this flash flood warning at Jun 19, 2011, 3:33 PM MDT for Kimball County, Nebraska. It was in force for 6 hr. 2 reports 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 19, 2011, 3:33 PM MDT (21:33 UTC)
- Expired
- Jun 19, 2011, 9:15 PM MDT
- In force
- 6 hr
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Flood severity
- None
County Kimball County, NE
The radar
The Cheyenne radar (KCYS), 85 km from the middle of the area, began a volume at 21:35 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 19, 4:21 PM MDT | FLASH FLOOD | 5 Sw Bushnell, NE | COUNTY ROADS 6...8...11 FLOODED |
| Jun 19, 5:21 PM MDT | FLASH FLOOD | 3 E Dix, NE | COUNTY ROAD 60 FLOODED AND CLOSED OVER LODGEPOLE CREEK |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 9.6 hours before the alert went out and 151 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
- 330 J/kg
- Mixed-layer CIN
- -236 J/kg
- Mixed-layer LCL
- 1573 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 100 m²/s²
- 0-3 km storm-relative helicity
- 108 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
381 WGUS55 KCYS 192133 FFWCYS NEC105-200330- /O.NEW.KCYS.FF.W.0007.110619T2133Z-110620T0330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 333 PM MDT SUN JUN 19 2011 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * FLASH FLOOD WARNING FOR... KIMBALL COUNTY IN THE PANHANDLE OF NEBRASKA... * UNTIL 930 PM MDT * AT 330 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. RADAR ESTIMATED HOURLY RAINFALL AMOUNTS IN EXCESS OF 2 INCHES PER HOUR ARE BEING OBSERVED. THUNDERSTORMS ARE MOVING SLOWLY AND TRAINING OVER THE SAME AREAS. THIS MUCH HEAVY RAINFALL WILL LEAD TO FLASH FLOODING. THIS FLASH FLOOD WARNING WILL REPLACE THE WARNING CURRENTLY IN EFFECT FOR THE SOUTHEASTERN PORTION OF KIMBALL COUNTY CURRENTLY IN EFFECT. * RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... KIMBALL...BENNETT RESERVOIR...DIX...KIMBALL AIRPORT...OLIVER RESERVOIR AND PANORAMA POINT. PRECAUTIONARY/PREPAREDNESS ACTIONS... DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN CHEYENNE. && LAT...LON 4100 10406 4139 10405 4139 10338 4101 10338 $$ CLAYCOMB
1 follow-up statement
868 WGUS75 KCYS 200315 FFSCYS FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 915 PM MDT SUN JUN 19 2011 NEC105-200330- /O.CAN.KCYS.FF.W.0007.000000T0000Z-110620T0330Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ KIMBALL NE- 915 PM MDT SUN JUN 19 2011 ...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR KIMBALL COUNTY IS CANCELLED... EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA. STREAMS AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO RECEDE...ENDING THE FLOOD THREAT. SHOWERS AND THUNDERSTORMS WILL CONTINUE THIS EVENING...BUT HEAVY RAIN IS NOT EXPECTED. IF FLOODING HAS BEEN OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY. LAT...LON 4100 10406 4139 10405 4139 10338 4101 10338 $$ CLAYCOMB
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 6:23 PM MDT | Flash Flood Watch | CYS | Banner, Box Butte, Cheyenne, Dawes, Kimball, Morrill and 2 more | 45 hr |
| Jun 19, 1:45 PM MDT | Severe Thunderstorm Warning | CYS | Kimball | 60 min |
| Jun 19, 2:27 PM MDT | Flash Flood Warning | CYS | Kimball | 70 min |
| Jun 19, 2:40 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne, Kimball | 31 min |
| Jun 19, 2:53 PM MDT | Flash Flood Warning | CYS | Cheyenne | 92 min |
| Jun 19, 3:08 PM MDT | Tornado Warning | CYS | Cheyenne | 37 min |
| Jun 19, 3:25 PM MDT | Severe Thunderstorm Warning | CYS | Kimball | 65 min |
| Jun 19, 3:46 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne | 44 min |
| Jun 19, 4:21 PM MDT | Flash Flood Warning | CYS | Cheyenne | 6 hr |
| Jun 19, 4:26 PM MDT | Severe Thunderstorm Warning | CYS | Banner, Cheyenne, Kimball, Morrill | 23 min |
| Jun 19, 4:46 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne | 59 min |
Nearby
Flash Flood Warnings in Nebraska, 2011Every flash flood warning in 2011
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.