Alert archive / Colorado / Flash Flood Warnings in 2004
Flash Flood Warning 32, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this flash flood warning at Aug 5, 2004, 3:46 PM MDT for Douglas 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
- Aug 5, 2004, 3:46 PM MDT (21:46 UTC)
- Expired
- Aug 5, 2004, 6:45 PM MDT
- In force
- 3 hr
- Issued by
- NWS Denver/Boulder, CO
- Area
- Counties, with a storm outline in the text
County Douglas County, CO
The radar
The Denver radar (KFTG), 89 km from the middle of the area, began a volume at 21:49 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, 9.8 hours before the alert went out and 187 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
- 31 J/kg
- Mixed-layer CIN
- -393 J/kg
- Mixed-layer LCL
- 1712 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- -11 m²/s²
- 0-3 km storm-relative helicity
- -17 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 052148 FFWBOU COC035-060045- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DENVER CO 346 PM MDT THU AUG 5 2004 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHWESTERN DOUGLAS COUNTY IN NORTHEAST COLORADO * UNTIL 645 PM MDT * AT 346 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN NEAR WESTCREEK...OR ABOUT 24 MILES SOUTHWEST OF CASTLE ROCK. THE STORM PRODUCING THE HEAVY RAIN WAS NEARLY STATIONARY. LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...WESTCREEK AND THE HAYMAN FIRE BURN AREA IN DOUGLAS COUNTY. 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. HEAVY RAINFALL WILL CAUSE FLASH FLOODING OF SMALL CREEKS...STREAMS... AND DITCHES IN THE HAYMAN FIRE BURN AREA. SOME DRAINAGE BASINS AFFECTED BY EXCESSIVE RUNOFF INCLUDE FOURMILE CREEK...GOOSE CREEK... SIXMILE CREEK...TRAIL CREEK...TURKEY CREEK...WEST CREEK...AND OTHER TRIBUTARIES OF THE SOUTH PLATTE RIVER. MUD AND ASH FLOWS CAN ALSO BE EXPECTED ACROSS RURAL ROADS. EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES AND ARROYOS...AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS. LAT...LON 3914 10531 3914 10516 3914 10507 3929 10519 $$ GARD...WFO BOULDER
2 follow-up statements
000 WGUS75 KBOU 052320 FFSBOU COC035-060045- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DENVER CO 515 PM MDT THU AUG 5 2004 A FLASH FLOOD WARNING REMAINS IN EFFECT FOR SOUTHWESTERN DOUGLAS COUNTY UNTIL 645 PM MDT. AT 510 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN OVER WESTCREEK...OR ABOUT 23 MILES SOUTHWEST OF CASTLE ROCK. THE STORM PRODUCING THE HEAVY RAIN WAS MOVING EAST AT 5 MPH. LOCATIONS REMAINING IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...WESTCREEK AND THE HAYMAN FIRE BURN AREA. TWO MUDSLIDES HAVE CLOSED STATE HIGHWAY 67 IN THE BURN AREA. HEAVY RAINFALL...AS MUCH AS 1.50 TO 2.00 INCHES AN HOUR...HAS WASHED MUCH ASH AND DEBRIS DOWN SMALL STREAMS AND ONTO ROADWAYS. SEVERAL PRIVATE DRIVEWAYS WERE WASHED OUT. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. IF YOUR VEHICLE STALLS ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND. HEAVY RAINFALL WILL CAUSE FLASH FLOODING OF SMALL CREEKS...STREAMS... AND DITCHES IN THE HAYMAN FIRE BURN AREA. SOME DRAINAGE BASINS AFFECTED BY EXCESSIVE RUNOFF INCLUDE FOURMILE CREEK...GOOSE CREEK... SIXMILE CREEK...TRAIL CREEK...TURKEY CREEK...WEST CREEK...AND OTHER TRIBUTARIES OF THE SOUTH PLATTE RIVER. MUD AND ASH FLOWS CAN ALSO BE EXPECTED ACROSS RURAL ROADS. EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES AND ARROYOS...AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS. LAT...LON 3914 10532 3914 10521 3915 10507 3928 10518 $$ GARD...WFO BOULDER
000 WGUS75 KBOU 060045 FFSBOU COC035-060100- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DENVER CO 645 PM MDT THU AUG 5 2004 ...FLASH FLOOD WARNING EXPIRES... THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR THE HAYMAN FIRE BURN AREA IN SOUTHWESTERN DOUGLAS COUNTY HAS BEEN ALLOWED TO EXPIRE AT 645 PM MDT THIS EVENING. AT 640 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT THE HEAVY THUNDERSTORM RAIN HAD MOVED TO THE EAST OF THE AREA. ISOLATED LIGHT RAIN SHOWERS WILL GRADUALLY DIMINISH THROUGH THE EARLY EVENING. LAT...LON 3914 10531 3914 10516 3914 10507 3929 10519 $$ GARD...WFO BOULDER
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 4, 8:10 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Washington | 65 min |
| Aug 4, 9:13 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 62 min |
| Aug 4, 10:40 PM MDT | Flash Flood Warning | BOU | Washington | 3 hr |
| Aug 5, 1:35 PM MDT | Flash Flood Warning | BOU | Clear Creek | 85 min |
| Aug 5, 3:14 PM MDT | Severe Thunderstorm Warning | BOU | Douglas | 46 min |
| Aug 5, 3:26 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe | 64 min |
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.