Alert archive / Wyoming / Flash Flood Warnings in 2007
Flash Flood Warning 3, NWS Cheyenne, WY
NWS Cheyenne, WY issued this flash flood warning at Jul 1, 2007, 4:31 PM MDT for Laramie County, Wyoming. It was in force for 119 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 1, 2007, 4:31 PM MDT (22:31 UTC)
- Expired
- Jul 1, 2007, 6:30 PM MDT
- In force
- 119 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Laramie County, WY
The radar
The Cheyenne radar (KCYS), 20 km from the middle of the area, began a volume at 22:33 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
Rapid City, SD (KUNR), launched 12:00Z, 10.5 hours before the alert went out and 341 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
- 56 J/kg
- Mixed-layer CIN
- -665 J/kg
- Mixed-layer LCL
- 2527 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS55 KCYS 012234 FFWCYS WYC021-020030- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 431 PM MDT SUN JUL 1 2007 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * FLASH FLOOD WARNING FOR... CENTRAL LARAMIE COUNTY IN SOUTHEAST WYOMING... * UNTIL 630 PM MDT * AT 429 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA. * THE STORM PRODUCING FLASH FLOODING WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED COUNTY. ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO INCHES PER HOUR ARE POSSIBLE IN THE WARNED AREA. THE FLASH FLOOD WARNING DOES NOT INCLUDE THE CITY OF CHEYENNE. DOPPLER RADAR INDICATED THAT 1.5 TO 2.5 INCHES OF RAIN HAD FALLEN IN AN AREA 8 MILES NORTHWEST OF BURNS. THIS WARNING INCLUDES HILLSDALE NORTH ROAD...ROAD 222 AND ROAD 220. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. REPORT FLOODING TO THE NATIONAL WEATHER SERVICE OFFICE IN CHEYENNE AT 1-800-269-6220. LAT...LON 4117 10456 4118 10442 4126 10444 4126 10456 $$ RUBIN
2 follow-up statements
000 WGUS75 KCYS 012349 FFSCYS FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 545 PM MDT SUN JUL 1 2007 WYC021-020030- LARAMIE WY- 545 PM MDT SUN JUL 1 2007 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM MDT FOR CENTRAL LARAMIE COUNTY... AT 541 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT THUNDERSTORMS HAD MOVED SOUTHEAST OF THE FLASH FLOOD WARNING AREA. HOWEVER...DOPPLER RADAR ESTIMATED RAINFALL AMOUNTS OF 1.5 TO 2.5 INCHES HAD FALLEN IN AN AREA 6 TO 10 MILES NORTHWEST OF BURNS. SOME ROADS THAT MAY BE FLOODED INCLUDE... HILLSDALE NORTH ROAD KESLAR ROAD DIVIDE ROAD HILLSDALE ROAD WEST ROAD 220 A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM MDT SUNDAY EVENING FOR THE WESTERN PANHANDLE OF NEBRASKA. LAT...LON 4117 10456 4118 10442 4126 10444 4126 10456 $$ RUBIN
000 WGUS75 KCYS 020029 FFSCYS FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 629 PM MDT SUN JUL 1 2007 WYC021-020039- LARAMIE WY- 629 PM MDT SUN JUL 1 2007 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 630 PM MDT FOR CENTRAL LARAMIE COUNTY... ALTHOUGH THE FLASH FLOOD WARNING WILL EXPIRE...PLEASE WATCH FOR WATER ON ROADS AND SLOW DOWN ACCORDINGLY. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM MDT SUNDAY EVENING FOR WESTERN NEBRASKA. LAT...LON 4117 10456 4118 10442 4126 10444 4126 10456 $$ RUBIN
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 3:59 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 46 min |
| Jul 1, 4:38 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 67 min |
| Jul 1, 5:07 PM MDT | Flash Flood Warning | CYS | Laramie | 113 min |
Nearby
Flash Flood Warnings in Wyoming, 2007Every flash flood warning in 2007
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.