Alert archive / Colorado / Flash Flood Warnings in 2004
Flash Flood Warning 8, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this flash flood warning at Jun 27, 2004, 3:55 PM MDT for Douglas County, Jefferson County, Colorado. It was in force for 3 hr. 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 27, 2004, 3:55 PM MDT (21:55 UTC)
- Expired
- Jun 27, 2004, 6:45 PM MDT
- In force
- 3 hr
- Issued by
- NWS Denver/Boulder, CO
- Area
- Counties, with a storm outline in the text
Counties Douglas County, CO, Jefferson County, CO
The radar
The Denver radar (KFTG), 57 km from the middle of the area, began a volume at 21:55 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, 9.9 hours before the alert went out and 169 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
- 9 J/kg
- Mixed-layer CIN
- -131 J/kg
- Mixed-layer LCL
- 1188 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 3 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 KBOU 272155 FFWBOU COC035-059-280045- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DENVER CO 355 PM MDT SUN JUN 27 2004 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHWESTERN DOUGLAS COUNTY IN NORTHEAST COLORADO NORTHEASTERN JEFFERSON COUNTY IN NORTHEAST COLORADO * UNTIL 645 PM MDT * AT 348 PM MDT...THE PUBLIC REPORTED VERY HEAVY RAIN OVER KEN CARYL RANCH. THE STORM PRODUCING THE HEAVY RAIN WAS MOVING SOUTH AT 5 MPH. HEAVY RAIN SHOWERS ARE OCCURRING ALL ALONG THE JEFFERSON COUNTY FOOTHILLS. LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...WEST CENTRAL ARVADA...GOLDEN...WESTERN LAKEWOOD...IDLEDALE...INDIAN HILLS...MORRISON...RED ROCKS PARK...ROCKY FLATS...ROXBOROUGH PARK... SOUTH PLATTE...TINY TOWN AND WHITE RANCH OPEN SPACE. 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. A NATIONAL WEATHER SERVICE SPOTTER 7 MILES EAST OF CONIFER HAS REPORTED 2.2 INCHES OF RAIN IN THE LAST HOUR. ANORTHER NATIONAL WEATHER SERVICE SPOTTER IN KEN CARYL RANCH HAS REPORTED AN INCH AND A HALF OF RAIN SINCE 3 PM. STREET FLOODING HAS BEEN REPORTED IN THE KEN CARYL RANCH AREA. EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING. ROCKSLIDES WILL ALSO BE POSSIBLE IN STEEP TERRAIN. SLOW MOVING RAIN SHOWERS AND THUNDERSTORMS ARE EXPECTED TO CONTINUE ALL ALONG THE JEFFERSON COUNTY FOOTHILLS THROUGH 5 PM WITH RUNOFF CONTINUING FROM THESE SHOWERS THROUGH 7 PM. 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. LAT...LON 3991 10522 3990 10533 3939 10519 3941 10504 $$ DANKERS
3 follow-up statements
000 WGUS75 KBOU 272251 FFSBOU COC035-059-280045- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DENVER CO 450 PM MDT SUN JUN 27 2004 A FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHWESTERN DOUGLAS COUNTY NORTHEASTERN JEFFERSON COUNTY UNTIL 645 PM MDT. AT 435 PM MDT...THE NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE HEAVY RAIN SHOWERS OVER THE JEFFERSON COUNTY FOOTHILLS HAD MOVED EASTWARD...OVER THE WESTERN SUBURBS OF DENVER. NUMEROUS REPORTS OF FLOODING HAVE BEEN RECEIVED FROM SPOTTERS IN GOLDEN AND THE KEN CARYL RANCH AREA. A SPOTTER ON THE NORTHWEST SIDE OF GOLDEN REPORTED 3.60 INCHES OF RAIN IN AN HOUR AND A HALF PERIOD. A SPOTTER IN KEN CARYL RANCH REPORTED 2.37 INCHES OF RAIN IN THE SAME AMOUNT OF TIME. HIGHWAY 93 HAS BEEN CLOSED BETWEEN BOULDER AND GOLDEN. OTHER REPORTS OF STANDING WATER AND STREAMS WELL OUT OF THEIR BANKS HAVE ALSO BEEN RECEIVED. ROADS WERE REPORTED TO BE IMPASSABLE IN THE KEN CARYL AREA. THE HEAVIEST RAINS HAVE FALLEN OVER THE VAN BIBBER CREEK DRAINAGE AND TO THE NORTH OF CHATFIELD RESERVOIR. ADDITIONAL RAIN SHOWERS ARE POSSIBLE THROUGH THE EARLY EVENING. THE THREAT OF ADDITIONAL FLOODING WILL CONTINUE FOR THE NEXT COUPLE HOURS. LOCATIONS REMAINING IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...WEST CENTRAL ARVADA...GOLDEN...WESTERN LAKEWOOD...IDLEDALE... INDIAN HILLS...MORRISON...RED ROCKS PARK...ROCKY FLATS...ROXBOROUGH PARK...SOUTH PLATTE...TINY TOWN AND WHITE RANCH OPEN SPACE. 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. EXCESSIVE RUNOFF FROM THESE STORMS WILL CAUSE FLASH FLOODING OF SMALL CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING. THE HEAVY RAINS COULD ALSO TRIGGER ROCK AND MUDSLIDES IN STEEP TERRAIN. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND. LAT...LON 3991 10522 3990 10533 3939 10519 3941 10504 $$ DANKERS
000 WGUS75 KBOU 280024 FFSBOU COC035-059-280045- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DENVER CO 625 PM MDT SUN JUN 27 2004 A FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHWESTERN DOUGLAS COUNTY NORTHEASTERN JEFFERSON COUNTY UNTIL 645 PM MDT. AT 610 PM MDT...THE NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE RAIN SHOWERS OVER EASTERN JEFFERSON COUNTY HAD DECREASED IN INTENSITY AND SPREAD EASTWARD...ACROSS THE DENVER METRO AREA. LIGHT RAIN SHOWERS ARE STILL EXPECTED TO CONTINUE THROUGH MUCH OF THIS EVENING. THE HEAVIEST FLOODING APPEARS TO HAVE BEEN IN THE GOLDEN AREA AND AROUND KEN CARYL RANCH. ROAD CLOSURES...FLOODED BASEMENTS AND SOME ROCKSLIDES HAVE ALL BEEN REPORTED AFTER THE HEAVY RAINS FELL EARLIER THIS AFTERNOON. RAINFALL AMOUNTS BETWEEN 2.00 AND 3.60 INCHES FELL ALONG AND NEAR THE FOOTHILLS OF JEFFERSON COUNTY BETWEEN 330 PM AND 530 PM. CLEAR CREEK WAS RUNNING NEAR BANKFULL LEVELS WHILE MANY CREEKS AND SMALL STREAMS HAVE MOVED OUT OF THEIR BANKS. WATER LEVELS ON CREEKS AND STREAMS WILL TAKE MOST OF THE EVENING TO RECEDE. LOCATIONS REMAINING IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...WEST CENTRAL ARVADA...GOLDEN...WESTERN LAKEWOOD...IDLEDALE... INDIAN HILLS...MORRISON...RED ROCKS PARK...ROCKY FLATS...ROXBOROUGH PARK...SOUTH PLATTE...TINY TOWN AND WHITE RANCH OPEN SPACE. 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. EXCESSIVE RUNOFF FROM THESE STORMS WILL CAUSE FLASH FLOODING OF SMALL CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY... COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING. ROCK AND MUDSLIDES MAY ALSO STILL OCCUR IN CANYONS AND STEEP TERRAIN. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS BRIDGES...DIPS...OR OTHER LOW SPOTS IF WATER COVERS THE ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND. LAT...LON 3991 10522 3990 10533 3939 10519 3941 10504 $$ DANKERS
000 WGUS75 KBOU 280049 FFSBOU COC035-059-280100- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DENVER CO 650 PM MDT SUN JUN 27 2004 THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR NORTHWESTERN DOUGLAS COUNTY NORTHEASTERN JEFFERSON COUNTY UNTIL 645 PM MDT HAS EXPIRED. AT 646 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT RAIN ALONG THE JEFFERSON COUNTY FOOTHILLS AND OVER THE WESTERN DENVER METRO AREA HAD DECREASED. AS RAINFALL HAD DIMINISHED... FLOODING PROBLEMS IN THE GOLDEN AND KEN CARYL RANCH AREAS WERE DECREASING. LIGHT RAIN SHOWERS ARE EXPECTED TO CONTINUE THIS EVENING...BUT ADDITIONAL HEAVY RAINS ARE NOT ANTICIPATED. PERSONS IN AND NEAR WEST CENTRAL ARVADA...GOLDEN...WESTERN LAKEWOOD...IDLEDALE...INDIAN HILLS...MORRISON...RED ROCKS PARK... ROCKY FLATS...ROXBOROUGH PARK...SOUTH PLATTE...TINY TOWN AND WHITE RANCH OPEN SPACE SHOULD REMAIN ALERT TO CHANGING WEATHER CONDITIONS. WATER LEVELS ON CREEKS AND STREAMS WILL REMAIN HIGH THROUGH THIS EVENING...BEFORE RECEDING OVERNIGHT. LAT...LON 3991 10522 3990 10533 3939 10519 3941 10504 $$ DANKERS
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 8:08 PM MDT | Severe Thunderstorm Warning | BOU | Morgan | 52 min |
| Jun 27, 5:44 PM MDT | Flash Flood Warning | BOU | Douglas, Jefferson | 3 hr |
Nearby
Flash Flood Warnings in Colorado, 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.