Alert archive / Wyoming / Flash Flood Warnings in 2012
Flash Flood Warning 5, NWS Cheyenne, WY
NWS Cheyenne, WY issued this flash flood warning at Jun 6, 2012, 5:13 PM MDT for Goshen County, Wyoming; Scotts Bluff County, Nebraska. It was in force for 3 hr. 4 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 6, 2012, 5:13 PM MDT (23:13 UTC)
- Expired
- Jun 6, 2012, 8:33 PM MDT
- In force
- 3 hr
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Flood severity
- None
Counties Scotts Bluff County, NE, Goshen County, WY
The radar
The Cheyenne radar (KCYS), 104 km from the middle of the area, began a volume at 23:17 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 6, 5:30 PM MDT | FLASH FLOOD | Stegall, NE | REPORT OF WATER OVER COUNTY ROAD 92 AROUND STEGALL |
| Jun 6, 6:49 PM MDT | FLASH FLOOD | 2 S Stegall, NE | WATER WAS UP TO CAR DOORS AT THE INTERSECTION OF COUNTY ROAD M AND STEGALL ROAD. |
| Jun 6, 6:49 PM MDT | HEAVY RAIN 1.9 | 3 S Stegall, NE | |
| Jun 6, 6:49 PM MDT | HEAVY RAIN 2 | Stegall, NE |
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, 11.2 hours before the alert went out and 225 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
- 72 J/kg
- Mixed-layer CIN
- -389 J/kg
- Mixed-layer LCL
- 2428 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
831
WGUS55 KCYS 062313
FFWCYS
NEC157-WYC015-070300-
/O.NEW.KCYS.FF.W.0005.120606T2313Z-120607T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
513 PM MDT WED JUN 6 2012
THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SCOTTS BLUFF COUNTY IN THE PANHANDLE OF NEBRASKA...
SOUTHEASTERN GOSHEN COUNTY IN SOUTHEAST WYOMING...
* UNTIL 900 PM MDT
* AT 505 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE
WARNED AREA. RADAR ESTIMATES THAT 3 TO 4 INCHES OF RAIN HAS FALLEN
OVER SOUTHEAST GOSHEN AND WEST CENTRAL SCOTTSBLUFF COUNTIES FROM
HAWK SPRINGS RECREATION AREA TO STEGALL. ADDITIONAL THUNDERSTORMS
WILL MOVE OVER THE AFFECTED AREA...AND WILL PRODUCE AN ADDITIONAL
1 TO 2 INCHES OF RAIN. THUNDERSTORMS WILL ALSO MOVE NORTHEAST INTO
CENTRAL SCOTTSBLUFF COUNTY...AND WILL PRODUCE SIMILAR RAINFALL
AMOUNTS.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
SCOTTSBLUFF...GERING...HAWK SPRINGS CAMPGROUND...HAWK SPRINGS
RECREATION AREA...HUBBARD HILL...LA GRANGE...LAKE ALICE...LYMAN...
MITCHELL...MORRILL...SCOTTS BLUFF NATIONAL
MONUMENT...SCOTTSBLUFF AIRPORT...STEGALL AND TERRYTOWN. THIS
ALSO INCLUDES EAGLE NEST DRAW AND KIOWA CREEK IN WESTERN
SCOTTSBLUFF COUNTY...AND ROBB DRAW IN SOUTHEAST GOSHEN COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.
FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN VEHICLES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...DIPS...
OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM... EVEN A
SMALL ONE...ON FOOT OR IN A VEHICLE.
&&
LAT...LON 4200 10423 4201 10363 4200 10352 4170 10351
4170 10405 4157 10405 4157 10424
$$
HAMMER/WEILAND3 follow-up statements
723
WGUS75 KCYS 062348
FFSCYS
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
548 PM MDT WED JUN 6 2012
NEC157-WYC015-070300-
/O.CON.KCYS.FF.W.0005.000000T0000Z-120607T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SCOTTS BLUFF NE-GOSHEN WY-
548 PM MDT WED JUN 6 2012
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHEASTERN GOSHEN AND
SCOTTS BLUFF COUNTIES UNTIL 900 PM MDT...
AT 530 PM MDT...TRAINED WEATHER SPOTTERS REPORTED WATER OVER COUNTY
ROAD 92 AROUND STEGALL IN WESTERN SCOTTS BLUFF COUNTY. DOPPLER RADAR
HAS ESTIMATED THAT 3 TO 5 INCHES OF RAIN HAS FALLEN ACROSS THOSE
AREAS. SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL WILL
CONTINUE TO MOVE OVER THE AFFECTED AREA THROUGH 800 PM MDT...AND
COULD PRODUCE AN ADDITIONAL 1 TO 3 INCHES OF RAINFALL.
RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
SCOTTSBLUFF...GERING...HAWK SPRINGS CAMPGROUND...HAWK SPRINGS
RECREATION AREA...HUBBARD HILL...LA GRANGE...LAKE ALICE...LYMAN...
MITCHELL...MORRILL...SCOTTS BLUFF NATIONAL MONUMENT...SCOTTSBLUFF
AIRPORT...STEGALL...TERRYTOWN...WILDCAT HILLS CAMPGROUND AND WILDCAT
HILLS STATE RECREATION AREA. THIS ALSO INCLUDES EAGLE NEST DRAW AND
KIOWA CREEK IN WESTERN SCOTTS BLUFF COUNTY...AND ROBB DRAW IN
SOUTHEAST GOSHEN COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE MINOR FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.
MOST FLOOD RELATED DEATHS OCCUR IN VEHICLES. DO NOT ATTEMPT TO CROSS
BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY.
NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT OR
IN A VEHICLE.
&&
LAT...LON 4200 10423 4201 10363 4200 10352 4170 10351
4170 10405 4157 10405 4157 10424
$$
HAMMER/WEILAND025
WGUS75 KCYS 070108
FFSCYS
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
708 PM MDT WED JUN 6 2012
NEC157-WYC015-070300-
/O.CON.KCYS.FF.W.0005.000000T0000Z-120607T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SCOTTS BLUFF NE-GOSHEN WY-
708 PM MDT WED JUN 6 2012
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHEASTERN GOSHEN AND
SCOTTS BLUFF COUNTIES UNTIL 900 PM MDT...
AT 649 PM MDT...THE NEBRASKA DEPARTMENT OF ROADS REPORTED
SIGNIFICANT FLASH FLOODING AT THE INTERSECTION OF COUNTY ROAD M AND
STEGALL ROAD...OR 2 MILES SOUTH OF STEGALL IN WESTERN SCOTTS BLUFF
COUNTY. WATER WAS REPORTED TO BE AS HIGH AS CAR DOORS AT THIS
LOCATION. DOPPLER RADAR HAS ESTIMATED THAT RAINFALL AMOUNTS OF WELL
IN EXCESS OF 4 INCHES HAVE FALLEN IN THOSE AREAS. AN ADDITIONAL ONE
HALF TO ONE INCH OF RAIN MAY OCCUR THROUGH 900 PM MDT.
RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME CREEKS AND STREAMS THAT MAY EXPERIENCE FLOODING INCLUDE
BUT ARE NOT LIMITED TO KIOWA CREEK...OWL CREEK...ROBB DRAW...EAGLE
NEST DRAW...AND MITCHELL AND GERING CANALS. OTHER LOCATIONS INCLUDE
GERING...HAWK SPRINGS CAMPGROUND...HAWK SPRINGS RECREATION
AREA...HUBBARD HILL...LA GRANGE...LAKE
ALICE...LYMAN...MITCHELL...MORRILL...STEGALL...TERRYTOWN...WILDCAT
HILLS CAMPGROUND AND WILDCAT HILLS STATE RECREATION AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE MINOR FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.
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 10423 4201 10363 4200 10352 4170 10351
4170 10405 4157 10405 4157 10424
$$
HAMMER/WEILAND509
WGUS75 KCYS 070233
FFSCYS
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
833 PM MDT WED JUN 6 2012
NEC157-WYC015-070244-
/O.CAN.KCYS.FF.W.0005.000000T0000Z-120607T0300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SCOTTS BLUFF NE-GOSHEN WY-
833 PM MDT WED JUN 6 2012
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SOUTHEASTERN GOSHEN
AND SCOTTS BLUFF COUNTIES IS CANCELLED...
EXCESS RUNOFF FROM HEAVY RAIN HAS ENDED OVER THE WARNED AREA...AND
FLASH FLOODING IS NO LONGER CONSIDERED A SIGNIFICANT THREAT.
HOWEVER...WATER REMAINS HIGH IN MANY AREAS AND WILL PERSIST THROUGH
THE REMAINDER OF THE EVENING. SOME ROADS IN WESTERN SCOTTS BLUFF
COUNTY REMAIN CLOSED AT THIS TIME. WATER SHOULD BEGIN TO SLOWLY
RECEDE AFTER MIDNIGHT. AN AREAL FLOOD WARNING WILL BE ISSUED SHORTLY
FOR CURRENT HIGH WATER HAZARDS.
LAT...LON 4200 10423 4201 10363 4200 10352 4170 10351
4170 10405 4157 10405 4157 10424
$$
HAMMER/WEILANDThe office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 6, 3:26 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 64 min |
| Jun 6, 3:39 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Laramie, Platte | 51 min |
| Jun 6, 3:57 PM MDT | Special Weather Statement | CYS | Laramie | 48 min |
| Jun 6, 4:02 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 58 min |
| Jun 6, 4:27 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Laramie, Platte | 35 min |
| Jun 6, 4:41 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 64 min |
| Jun 6, 4:48 PM MDT | Flash Flood Warning | CYS | Goshen, Laramie, Platte | 4 hr |
| Jun 6, 4:52 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Laramie | 53 min |
| Jun 6, 5:08 PM MDT | Special Weather Statement | CYS | Albany | 37 min |
| Jun 6, 5:33 PM MDT | Flash Flood Warning | CYS | Laramie | 3 hr |
| Jun 6, 5:43 PM MDT | Severe Thunderstorm Warning | CYS | Goshen | 62 min |
| Jun 6, 5:47 PM MDT | Severe Thunderstorm Warning | CYS | Goshen, Laramie | 58 min |
| Jun 6, 3:15 PM MDT | Special Weather Statement | CYS | Scotts Bluff | 45 min |
| Jun 6, 3:59 PM MDT | Special Weather Statement | CYS | Dawes | 46 min |
| Jun 6, 4:15 PM MDT | Special Weather Statement | CYS | Scotts Bluff | 60 min |
| Jun 6, 5:53 PM MDT | Special Weather Statement | CYS | Kimball | 52 min |
Nearby
Flash Flood Warnings in Wyoming, 2012Flash 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.