Alert archive / Wyoming / Flash Flood Warnings in 2007
Flash Flood Warning 4, NWS Cheyenne, WY
NWS Cheyenne, WY issued this flash flood warning at Jul 1, 2007, 5:07 PM MDT for Laramie County, Wyoming; Banner County, Nebraska. It took effect at Jul 1, 2007, 5:12 PM MDT. It was in force for 108 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, 5:07 PM MDT (23:07 UTC)
- In effect from
- Jul 1, 2007, 5:12 PM MDT
- Expired
- Jul 1, 2007, 7:00 PM MDT
- In force
- 108 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
Counties Banner County, NE, Laramie County, WY
The radar
The Cheyenne radar (KCYS), 59 km from the middle of the area, began a volume at 23:08 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
N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.1 hours before the alert went out and 303 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
- 822 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- -32 m²/s²
- 0-3 km storm-relative helicity
- 14 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 012312 FFWCYS NEC007-WYC021-020100- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 507 PM MDT SUN JUL 1 2007 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHWESTERN BANNER COUNTY IN THE PANHANDLE OF NEBRASKA... EXTREME NORTHEASTERN LARAMIE COUNTY IN SOUTHEAST WYOMING... * UNTIL 700 PM MDT * AT 503 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 COUNTIES. ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO INCHES PER HOUR ARE POSSIBLE IN THE WARNED AREA. DOPPLER RADAR INDICATED THAT ONE TO TWO INCHES OF RAIN HAS ALREADY FALLEN IN A LOCATION 2 TO 7 MILES NORTHEAST OF ALBIN. HEAVY RAIN WILL FALL ACROSS THIS AREA THROUGH AT LEAST 600 PM MDT. STORMS ARE MOVING EAST AT ONLY 5 MPH. SOME ROADS INCLUDED IN THE FLASH FLOOD WARNING ARE... ALBIN-LA GRANGE ROAD HOLGERSON ROAD ROAD 231 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. 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 4140 10413 4140 10385 4157 10385 4152 10412 $$ RUBIN
1 follow-up statement
000 WGUS75 KCYS 020021 FFSCYS FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 618 PM MDT SUN JUL 1 2007 NEC007-WYC021-020100- BANNER NE-LARAMIE WY- 618 PM MDT SUN JUL 1 2007 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 PM MDT FOR EXTREME NORTHEASTERN LARAMIE AND SOUTHWESTERN BANNER COUNTIES... AT 615 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE ONLY LIGHT SHOWERS IN THE FLASH FLOOD WARNING AREA. DOPPLER RADAR ESTIMATES THAT 1.5 TO 2.5 INCHES OF RAIN HAD FALLEN IN AN AREA 1 TO 7 MILES NORTHEAST OF ALBIN. SOME ROADS THAT MAY BE FLOODED INCLUDE... HOLGERSON ROAD ALBIN-LA GRANGE ROAD NORTH OF ALBIN ROADS IN SOUTHWEST BANNER COUNTY A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM MDT SUNDAY EVENING FOR CENTRAL NEBRASKA. LAT...LON 4140 10413 4140 10385 4157 10385 4152 10412 $$ 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, 4:31 PM MDT | Flash Flood Warning | CYS | Laramie | 119 min |
| Jul 1, 4:38 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 67 min |
Nearby
Flash Flood Warnings in Wyoming, 2007Flash Flood Warnings in Nebraska, 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.