Alert archive / Nebraska / Flash Flood Warnings in 2012
Flash Flood Warning 2, NWS Cheyenne, WY
NWS Cheyenne, WY issued this flash flood warning at Apr 26, 2012, 5:02 PM MDT for Scotts Bluff County, Nebraska. It was in force for 6 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
- Apr 26, 2012, 5:02 PM MDT (23:02 UTC)
- Expired
- Apr 26, 2012, 11:00 PM MDT
- In force
- 6 hr
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Flood severity
- None
County Scotts Bluff County, NE
The radar
The Cheyenne radar (KCYS), 143 km from the middle of the area, began a volume at 23:05 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 |
|---|---|---|---|
| Apr 26, 7:00 PM MDT | FLASH FLOOD | 12 Ne Gering, NE | COUNTY ROAD 32 NEAR COUNTY ROAD A FLOODED AND CLOSED NEAR THE COUNTY BORDER WITH BOX BUTTE COUNTY |
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, 11.0 hours before the alert went out and 231 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2416 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 50 m²/s²
- 0-3 km storm-relative helicity
- 53 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
160 WGUS55 KCYS 262302 FFWCYS NEC157-270500- /O.NEW.KCYS.FF.W.0002.120426T2302Z-120427T0500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 502 PM MDT THU APR 26 2012 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHEASTERN SCOTTS BLUFF COUNTY IN THE PANHANDLE OF NEBRASKA... * UNTIL 1100 PM MDT * AT 458 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA. DOPPLER RADAR ESTIMATED RAINFALL AMOUNTS BETWEEN 2 AND 4 INCHES DURING THE LAST HOUR OR SO NEAR LAKE MINATARE CAMPGROUND. THE RUNOFF MAY CAUSE SOME FLASH FLOODING ON LOCAL CREEKS NEAR THE CAMPGROUND. * RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...LAKE ALICE...LAKE MINATARE AND LAKE MINATARE CAMPGROUND. THE STORMS HAVE BEEN SLOWLY BACKBUILDING WHICH MAY FAVOR ADDITIONAL RAINFALL AMOUNTS UP TO 2 INCHES. PRECAUTIONARY/PREPAREDNESS ACTIONS... FLOODING IS OCCURRING OR IS IMMINENT. IT IS IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS. CAMPERS AND HIKERS SHOULD AVOID STREAMS OR CREEKS. && LAT...LON 4200 10336 4188 10336 4182 10354 4200 10362 $$ COX
2 follow-up statements
733 WGUS75 KCYS 270252 FFSCYS FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 852 PM MDT THU APR 26 2012 NEC157-270500- /O.CON.KCYS.FF.W.0002.000000T0000Z-120427T0500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SCOTTS BLUFF NE- 852 PM MDT THU APR 26 2012 ...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHEASTERN SCOTTS BLUFF COUNTY UNTIL 1100 PM MDT... AT 850 PM MDT...DOPPLER RADAR INDICATED SCATTERED LIGHT SHOWERS CONTINUED ACROSS NORTHEASTERN SCOTTS BLUFF COUNTY. THE SCOTTS BLUFF COUNTY SHERIFFS OFFICE REPORTED THAT SEVERAL DIRT ROADS WERE STILL CLOSED DUE TO BEING WASHED OUT BY THE ESTIMATED 5 TO 6 INCHES OF RAIN THAT FELL EARLIER. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...LAKE MINATARE AND LAKE MINATARE CAMPGROUND. PRECAUTIONARY/PREPAREDNESS ACTIONS... MOST FLOOD RELATED DEATHS OCCUR IN VEHICLES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT OR IN A VEHICLE. && LAT...LON 4200 10336 4188 10336 4182 10354 4200 10362 $$ RUBIN
090 WGUS75 KCYS 270459 FFSCYS FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 1059 PM MDT THU APR 26 2012 NEC157-270514- /O.EXP.KCYS.FF.W.0002.000000T0000Z-120427T0500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ SCOTTS BLUFF NE- 1059 PM MDT THU APR 26 2012 ...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTHEASTERN SCOTTS BLUFF COUNTY WILL BE ALLOWED TO EXPIRE AT 1100 PM MDT... 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...HOWEVER STANDING WATER REMAINS. IF FLOODING HAS BEEN OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW ENFORCEMENT AGENCY. LAT...LON 4200 10336 4188 10336 4182 10354 4200 10362 $$ MAZUR
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 11:05 AM MDT | Wind Advisory | CYS | Banner, Box Butte, Cheyenne, Dawes, Kimball, Morrill and 2 more | 10 hr |
| Apr 26, 1:51 PM MDT | Special Weather Statement | CYS | Box Butte | 54 min |
| Apr 26, 2:39 PM MDT | Wind Advisory | CYS | Banner, Box Butte, Cheyenne, Dawes, Kimball, Morrill and 2 more | 30 hr |
| Apr 26, 2:45 PM MDT | Special Weather Statement | CYS | Box Butte | 60 min |
| Apr 26, 3:27 PM MDT | Special Weather Statement | CYS | Scotts Bluff | 63 min |
| Apr 26, 3:50 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte | 40 min |
| Apr 26, 3:58 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Morrill, Scotts Bluff, Sioux | 62 min |
| Apr 26, 4:04 PM MDT | Flash Flood Warning | CYS | Box Butte | 6 hr |
| Apr 26, 4:30 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte | 18 min |
| Apr 26, 5:01 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Morrill, Scotts Bluff, Sioux | 37 min |
| Apr 26, 5:09 PM MDT | Special Weather Statement | CYS | Box Butte | 66 min |
| Apr 26, 5:35 PM MDT | Special Weather Statement | CYS | Box Butte | 25 min |
Nearby
Flash Flood Warnings in Nebraska, 2012Every flash flood warning in 2012
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.