Alert archive / Wyoming / Flash Flood Warnings in 2004
Flash Flood Warning 2, NWS Cheyenne, WY
NWS Cheyenne, WY issued this flash flood warning at Jun 30, 2004, 5:39 PM MDT for Laramie County, Wyoming. It was in force for 111 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 30, 2004, 5:39 PM MDT (23:39 UTC)
- Expired
- Jun 30, 2004, 7:30 PM MDT
- In force
- 111 min
- Issued by
- NWS Cheyenne, WY
- Area
- Counties, with a storm outline in the text
County Laramie County, WY
The radar
The Cheyenne radar (KCYS), 2 km from the middle of the area, began a volume at 23:41 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
Denver, CO (KDNR), launched 12:00Z, 11.7 hours before the alert went out and 196 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
- 1452 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -20 m²/s²
- 0-3 km storm-relative helicity
- 8 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 302339 FFWCYS WYC021-010130- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 539 PM MDT WED JUN 30 2004 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * FLASH FLOOD WARNING FOR... CENTRAL LARAMIE COUNTY IN SOUTHEAST WYOMING THIS INCLUDES THE CITY OF CHEYENNE * UNTIL 730 PM MDT * AT 539 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED FLASH FLOODING FROM A THUNDERSTORM NEAR CHEYENNE...MOVING NORTHWEST AT 5 MPH. * THE THUNDERSTORM PRODUCING FLASH FLOODING WILL BE NEAR... CHEYENNE AND WARREN AIR FORCE BASE THROUGH 730 PM. ADDITIONAL RAINFALL AMOUNTS OF ONE INCH PER HOUR WILL OCCUR WITH THE THUNDERSTORMS. 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. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES. 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. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND. 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. LAT...LON 4105 10492 4107 10459 4131 10467 4125 10505 $$ SR
3 follow-up statements
000 WGUS75 KCYS 302359 FFSCYS WYC021-010130- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 559 PM MDT WED JUN 30 2004 ...A FLASH FLOOD WARNING CONTINUES UNTIL 730 PM MDT FOR CENTRAL LARAMIE COUNTY... AT 559 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL OVER CHEYENNE...MOVING NORTHEAST AT 5 MPH. NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED RAINFALL AMOUNTS OF ONE TO TWO INCHES HAD FALLEN ACROSS SOUTHERN SECTIONS OF CHEYENNE. SLOW MOVING THUNDERSTORMS ARE PRODUCING VERY HEAVY RAINFALL IN THE WARNED AREA. EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...CHEYENNE... WARREN AF BASE...NORTH CHEYENNE...HIGHWAY 85 AT LODGEPOLE CREEK... AND SOUTH GREELEY HIGHWAY. MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. IF YOUR VEHICLE STALLS...ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND. TO REPORT SEVERE WEATHER...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE. $$ RUBIN
000 WGUS75 KCYS 010045 FFSCYS WYC021-010130- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 644 PM MDT WED JUN 30 2004 ...A FLASH FLOOD WARNING CONTINUES UNTIL 730 PM MDT FOR CENTRAL LARAMIE COUNTY INCLUDING THE CITY OF CHEYENNE... WIDESPREAD FLOODING HAS BEEN REPORTED IN SOUTHERN SECTIONS OF CHEYENNE. LAW ENFORCEMENT HAVE RESCUED PEOPLE FROM FLOODED BASEMENTS AND VEHICLES IN SOUTHERN SECTIONS OF CHEYENNE. AT 644 PM MDT...THUNDERSTORMS WITH MODERATE RAINFALL WERE IN CHEYENNE...MOVING NORTH AT 5 MPH. THE RAINFALL RATES CONTINUE TO DECREASE...BUT THE THREAT OF FLOODING CONTINUES. SLOW MOVING THUNDERSTORMS HAVE PRODUCED VERY HEAVY RAINFALL IN THE WARNED AREA. DOPPLER RADAR INDICATED THAT UP TO TWO AND ONE HALF INCHES OF RAIN HAD FALLEN IN SOUTHERN CHEYENNE...NEAR THE SOUTH GREELEY HIGHWAY. EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR. SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE CENTRAL AND SOUTHERN PORTIONS OF CHEYENNE. MOST DEATHS IN FLASH FLOODING OCCUR IN AUTOMOBILES. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. 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. IF YOUR VEHICLE STALLS...ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND. TO REPORT SEVERE WEATHER...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE. $$ RUBIN
000 WGUS75 KCYS 010138 FFSCYS WYC021-010230- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 737 PM MDT WED JUN 30 2004 ...THE FLASH FLOOD WARNING WHICH WAS IN EFFECT FOR CENTRAL LARAMIE COUNTY IN SOUTHEAST WYOMING EXPIRED AT 730 PM MDT... AT 737 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LARGE AREA OF SHOWERS AND THUNDERSTORMS ACROSS WESTERN AND CENTRAL LARAMIE COUNTY. THE SHOWERS AND THUNDERSTORMS WERE PRODUCING LIGHT TO MODERATE RAIN. THE HEAVY RAIN HAS ENDED OVER THE WARNED AREA. WATER ON ROADWAYS...STREAMS AND CREEKS IN THE WARNED AREA HAVE RECEDED OR WERE BEGINNING TO RECEDE...ENDING THE FLASH FLOODING THREAT. AT 735 PM MDT...FLOODING WAS STILL REPORTED ACROSS PORTIONS OF SOUTHERN CHEYENNE...IN THE ORCHARD VALLEY AREA...AND THE AREA WEST OF COLLEGE AVENUE AND SOUTH OF INTERSTATE 80 NEAR ROSSMAN ELEMENTARY SCHOOL AND JOHNSON JUNIOR HIGH SCHOOL. EIGHT INCHES OR WATER COVERED THE ROAD AT COLLEGE DRIVE AND WALTERSCHEID BOULEVARD. ALTHOUGH THE FLASH FLOOD WARNING HAS ENDED...ROADWAYS AND LOW LYING AREAS WILL STILL BE FLOODED. DO NOT DRIVE ACROSS AREAS WHERE WATER COVERS THE ROADS TO UNKNOWN DEPTHS. $$ RUBIN
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 7:42 PM MDT | Flash Flood Warning | CYS | Albany | 2 hr |
| Jun 30, 5:22 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 53 min |
Nearby
Flash Flood Warnings in Wyoming, 2004Every flash flood warning in 2004
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.