Alert archive / Nebraska / Flash Flood Warnings in 2010
Flash Flood Warning 13, NWS Cheyenne, WY
NWS Cheyenne, WY issued this flash flood warning at Jul 6, 2010, 7:05 PM MDT for Cheyenne County, Nebraska. It was in force for 4 hr. 3 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
- Jul 6, 2010, 7:05 PM MDT (01:05 UTC)
- Expired
- Jul 6, 2010, 10:42 PM MDT
- In force
- 4 hr
- Issued by
- NWS Cheyenne, WY
- Area
- Storm-based polygon
- Flood severity
- None
County Cheyenne County, NE
The radar
The Cheyenne radar (KCYS), 163 km from the middle of the area, began a volume at 01:06 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 |
|---|---|---|---|
| Jul 6, 7:08 PM MDT | FLASH FLOOD | 3 N Colton, NE | HEAVY RAIN HAS PRODUCED FLOODING JUST NORTH OF COLTON. THREE INCHES OF RAIN HAS FALLEN AND STILL RAINING. SOME FENCE POSTS ARE UNDER WATER. |
| Jul 6, 9:00 PM MDT | FLASH FLOOD | 1 N Sunol, NE | 1 COUNTY POLICE CAR LOST WHEN FLOOD WATERS COVER ROAD. |
| Jul 6, 9:00 PM MDT | FLASH FLOOD | Lodgepole, NE | LODGEPOOL CREEK OVERFLOWED ITS BANKS ROUGHLY 3.3 MILES WEST OF TOWN AND FLOWED EAST BETWEEN US HWY 385 AND THE RAILROAD. RAILROAD AND HWY NARROWED NEAR THE COOP IN LODGEPOLE CAUSING WATERS TO BUILD UP PRESSURE AND THEN ERODE THE RAILROAD CAUSING FLOODING IN SO |
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 00:00Z, 1.1 hours before the alert went out and 144 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
- 152 J/kg
- Mixed-layer CIN
- -68 J/kg
- Mixed-layer LCL
- 3141 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 87 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
692
WGUS55 KCYS 070105
FFWCYS
NEC033-070600-
/O.NEW.KCYS.FF.W.0013.100707T0105Z-100707T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE CHEYENNE WY
705 PM MDT TUE JUL 6 2010
THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHERN CHEYENNE COUNTY IN THE PANHANDLE OF NEBRASKA...
* UNTIL MIDNIGHT MDT
* AT 659 PM MDT...TRAINED WEATHER SPOTTERS REPORTED THAT THE WATER
LEVELS IN SOME AREA CREEKS HAS RISEN SIGNIFICANTLY. A CREEK...FOUR
MILES TO THE NORTH OF SIDNEY WHICH IS NORMALLY DRY WAS CURRENTLY
RUNNING ABOUT 15 FEET WIDE. THE FLOODING OVER SOUTHERN CHEYENNE
COUNTY WOLL BE DUE TO SLOW MOVING THUNDERSTORMS WHICH HAVE PRODUCED
VERY HEAVY RAINFALL. DOPPLER RADAR ESTIMATES OF 2 TO 3 INCHES OF
RAINFALL OVER MUCH OF SOUTHERN AND CENTRAL CHEYENNE COUNTY HAS FALLEN
SINCE 5 PM.
* RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
SIDNEY...BROWNSON...COLTON...LODGEPOLE...LORENZO...MOUNT VERNON...
POTTER...SIDNEY AIRPORT AND SUNOL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL AMOUNTS OF UP TO ONE INCH IS POSSIBLE THIS EVENING
OVER SOUTHERN CHEYENNE COUNTY AND WILL CONTRIBUTE TO ANY FLOODING.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...
COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND
OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING.
&&
LAT...LON 4100 10261 4102 10338 4128 10333 4133 10262
4117 10259
$$
MSW4 follow-up statements
176
WGUS75 KCYS 070119
FFSCYS
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
719 PM MDT TUE JUL 6 2010
NEC033-070600-
/O.CON.KCYS.FF.W.0013.000000T0000Z-100707T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHEYENNE NE-
719 PM MDT TUE JUL 6 2010
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHERN CHEYENNE COUNTY
UNTIL MIDNIGHT MDT...
AT 710 PM MDT...WEATHER SPOTTERS REPORTED HEAVY RAINFALL FROM
THUNDERSTORMS CONTINUES OVER SOUTHERN CHEYENNE COUNTY. THREE MILES TO
THE NORTH OF COLTON...3 INCHES OF RAIN WAS REPORTED THROUGH 7 PM.
THAT HEAVY RAIN HAS PRODUCED FLOODING OF LOW LYING AREAS WITH SOME
FENCE POSTS UNDERWATER.
RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
SIDNEY...BROWNSON...COLTON...LODGEPOLE...LORENZO...MOUNT VERNON...
POTTER...SIDNEY AIRPORT AND SUNOL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL AMOUNTS OF AN INCH ARE POSSIBLE IN THE WARNED AREA
AND WILL AGGRAVATE ANY FLOODING.
EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS
AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS
AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW LYING
AREAS ARE ALSO SUBJECT TO FLOODING.
&&
LAT...LON 4100 10261 4102 10338 4128 10333 4133 10262
4117 10259
$$
MSW637
WGUS75 KCYS 070157
FFSCYS
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
757 PM MDT TUE JUL 6 2010
NEC033-070600-
/O.CON.KCYS.FF.W.0013.000000T0000Z-100707T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHEYENNE NE-
757 PM MDT TUE JUL 6 2010
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHERN CHEYENNE COUNTY
UNTIL MIDNIGHT MDT...
AT 755 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS THE WARNED AREA.
ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES CAN BE EXPECTED.
RUNOFF FROM THIS EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
SIDNEY...BROWNSON...COLTON...LODGEPOLE...LORENZO...MOUNT VERNON...
POTTER...SIDNEY AIRPORT AND SUNOL.
AT 750 PM MDT...FLOODING OF HIGHWAY 30 BETWEEN COLTON AND SUNOL WAS
REPORTED. THE ROAD AROUND COLTON MAY BE CLOSED SHORTLY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE WARNED
AREA.
EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS
AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS
AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW LYING
AREAS ARE ALSO SUBJECT TO FLOODING.
&&
LAT...LON 4100 10261 4102 10338 4128 10333 4133 10262
4117 10259
$$
RUBIN742
WGUS75 KCYS 070337
FFSCYS
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
937 PM MDT TUE JUL 6 2010
NEC033-070600-
/O.CON.KCYS.FF.W.0013.000000T0000Z-100707T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHEYENNE NE-
937 PM MDT TUE JUL 6 2010
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHERN CHEYENNE COUNTY
UNTIL MIDNIGHT MDT...
AT 930 PM MDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED THAT FLASH
FLOODING WAS OCCURRING OVER MUCH OF SOUTHERN CHEYENNE COUNTY. THIS
INCLUDES HIGHWAY 30 BETWEEN SIDNEY TO LODGEPOLE WHICH WAS FLOODED AND
HAS BEEN CLOSED. MANY SMALL STREAMS AND LODGEPOLE CREEK ARE OUT OF THEIR
BANKS IN SOUTHERN CHEYENNE COUNTY AT THAT TIME.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...SIDNEY...
BROWNSON...COLTON...LODGEPOLE...LORENZO...MOUNT VERNON...POTTER...
SIDNEY AIRPORT AND SUNOL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL AMOUNTS OF UP TO AN INCH ARE POSSIBLE IN THE AREA
THROUGH MIDNIGHT. A FLASH FLOOD WATCH REMAINS IN EFFECT FOR THE
WESTERN NEBRASKA PANHANDLE THROUGH 6 AM.
EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS
AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS
AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW LYING
AREAS ARE ALSO SUBJECT TO FLOODING.
&&
LAT...LON 4100 10261 4102 10338 4128 10333 4133 10262
4117 10259
$$
MSW709
WGUS75 KCYS 070442
FFSCYS
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
1042 PM MDT TUE JUL 6 2010
NEC033-070454-
/O.CAN.KCYS.FF.W.0013.000000T0000Z-100707T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHEYENNE NE-
1042 PM MDT TUE JUL 6 2010
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR SOUTHERN CHEYENNE
COUNTY IS CANCELLED...
THE WIDESPREAD HEAVY RAINFALL OVER SOUTHERN CHEYENNE COUNTY HAS
ENDED LATE THIS EVENING. ADDITIONAL RAINFALL OF UP TO ONE INCH IS
POSSIBLE THE REST OF TONIGHT IN SOME PLACES.
FLOODING IS WIDESPREAD OVER SOUTHERN CHEYENNE COUNTY AS OF 1030 PM.
THE HIGH WATER LEVELS WILL BE SLOW TO RECEDE AND SO THE FLASH FLOOD
WARNING HAS BEEN REPLACED BY AN AREAL FLOOD WARNING FOR THE SAME
AREA.
LAT...LON 4100 10261 4102 10338 4128 10333 4133 10262
4117 10259
$$
MSWThe office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 6:10 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Dawes, Morrill, Scotts Bluff | 65 min |
| Jul 6, 6:19 PM MDT | Tornado Warning | CYS | Cheyenne | 21 min |
| Jul 6, 6:37 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne | 53 min |
| Jul 6, 7:32 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne | 43 min |
| Jul 6, 8:12 PM MDT | Severe Thunderstorm Warning | CYS | Cheyenne | 51 min |
| Jul 6, 10:37 PM MDT | Areal Flood Warning | CYS | Cheyenne | 23 hr |
Nearby
Flash Flood Warnings in Nebraska, 2010Every flash flood warning in 2010
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.