Alert archive / Wyoming / Flash Flood Warnings in 2007
Flash Flood Warning 13, NWS Cheyenne, WY
NWS Cheyenne, WY issued this flash flood warning at Jul 27, 2007, 7:19 PM MDT for Laramie County, Wyoming. It took effect at Jul 27, 2007, 7:33 PM MDT. It was in force for 102 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 27, 2007, 7:19 PM MDT (01:19 UTC)
- In effect from
- Jul 27, 2007, 7:33 PM MDT
- Expired
- Jul 27, 2007, 9:15 PM MDT
- In force
- 102 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 01:21 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 27, 7:50 PM MDT | FLASH FLOOD | 17 E Cheyenne, WY | WATER STANDING IN YARD ONE INCH DEPTH. |
| Jul 27, 7:50 PM MDT | HEAVY RAIN 0 | 17 E Cheyenne, WY | WATER STANDING IN YARD ONE INCH DEPTH. |
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, 1.3 hours before the alert went out and 202 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
- 601 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 1823 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 44 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 280133 CCA FFWCYS WYC021-280315- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING...CORRECTED NATIONAL WEATHER SERVICE CHEYENNE WY 719 PM MDT FRI JUL 27 2007 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHEASTERN LARAMIE COUNTY IN SOUTHEAST WYOMING... * UNTIL 915 PM MDT * AT 717 PM MDT...TRAINED WEATHER SPOTTERS REPORTED FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA...ON COUNTRY ROAD 154 JUST SOUTH OF INTERSTATE 80. THUNDERSTORMS ARE MOVING EAST AT 10 MPH. EXPECT RAINFALL AMOUNTS OF 1 TO 1.5 INCHES PER HOUR. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PINE BLUFFS THIS DOES NOT INCLUDE THE AREA OF CHEYENNE. 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. MOVE TO HIGHER GROUND. REPORT FLOODING TO THE NATIONAL WEATHER SERVICE OFFICE IN CHEYENNE AT 1-800-269-6220. LAT...LON 4102 10448 4101 10408 4123 10407 4121 10432 $$
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 7:19 PM MDT | Flash Flood Warning | CYS | Laramie | 116 min |
| Jul 27, 9:05 PM MDT | Flash Flood Warning | CYS | Laramie | 2 hr |
| Jul 28, 2:14 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 31 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.