Alert archive / Colorado / Flash Flood Warnings in 2004
Flash Flood Warning 40, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this flash flood warning at Aug 18, 2004, 5:33 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 18, 2004, 5:33 PM MDT (23:33 UTC)
- Expired
- Aug 18, 2004, 8:30 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), 53 km from the middle of the area, began a volume at 23:33 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, 11.6 hours before the alert went out and 151 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
- 2142 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- 18 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 182333 FFWBOU COC035-190230- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DENVER CO 533 PM MDT WED AUG 18 2004 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * FLASH FLOOD WARNING FOR... CENTRAL DOUGLAS COUNTY IN NORTHEAST COLORADO * UNTIL 830 PM MDT * AT 529 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN ACROSS MUCH OF THE CENTRAL PORTIONS OF DOUGLAS COUNTY. THE STORMS HAVE BEEN EXPANDING...BUT REMAIN NEARLY STATIONARY. LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...BEVERLY HILLS...CASTLE PINES...CASTLE ROCK...FRANKTOWN...LOUVIERS...PERRY PARK AND SEDALIA. A SPOTTER REPORTED 2 INCH PER HOUR RAINFALL RATE BUT NO REPORTS OF FLOODING YET. 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 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. LAT...LON 3948 10476 3948 10508 3925 10508 3924 10473 $$ ENTREKIN
2 follow-up statements
000 WGUS75 KBOU 190050 FFSBOU COC035-190230- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DENVER CO 640 PM MDT WED AUG 18 2004 A FLASH FLOOD WARNING REMAINS IN EFFECT FOR CENTRAL DOUGLAS COUNTY UNTIL 830 PM MDT. AT 640 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED MODERATE RAIN CONTINUES ACROSS MUCH OF CENTRAL DOUGLAS COUNTY. THE STORMS ARE MOVING VERY SLOWLY EAST AT 5 MPH. LOCATIONS REMAINING IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...BEVERLY HILLS...CASTLE PINES...CASTLE ROCK...FRANKTOWN... LOUVIERS...PERRY PARK...ROXBOROUGH PARK AND SEDALIA. AUTOMATED RAIN GAUGES REPORTED UPWARDS OF 2 INCHES OF RAIN IN CASTLE ROCK. COUNTY OFFICIALS HAVE NOT REPORTED ANY FLOODING PROBLEMS AT THIS TIME. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. IF YOUR VEHICLE STALLS ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND. LAT...LON 3948 10476 3948 10508 3925 10508 3924 10473 $$ ENTREKIN
000 WGUS75 KBOU 190139 FFSBOU COC035-190155- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE DENVER CO 740 PM MDT WED AUG 18 2004 THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR CENTRAL DOUGLAS COUNTY UNTIL 830 PM MDT HAS BEEN CANCELLED. AT 732 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED MODERATE RAIN OVER CENTRAL DOUGLAS COUNTY. THE SHOWERS ARE MOVING SLOWLY NORTHEAST AT 5 MPH. THE TREAT FOR MAJOR FLASH FLOODING HAS ENDED. HOWEVER...SATURATED SOILS AND ADDITIONAL RAINFALL TONIGHT MAY RESULT IN SOME MINOR FLOODING OF LOW LYING AREAS AND CREEKS. PERSONS IN AND NEAR BEVERLY HILLS...CASTLE PINES...CASTLE ROCK... LOUVIERS...PERRY PARK...ROXBOROUGH PARK AND SEDALIA SHOULD REMAIN ALERT TO CHANGING WEATHER CONDITIONS. LAT...LON 3948 10476 3948 10508 3925 10508 3924 10473 $$ ENTREKIN
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 1:02 PM MDT | Flash Flood Warning | BOU | Larimer | 3 hr |
| Aug 18, 1:42 PM MDT | Flash Flood Warning | BOU | Douglas | 3 hr |
| Aug 18, 3:08 PM MDT | Flash Flood Warning | BOU | Boulder | 3 hr |
| Aug 18, 3:32 PM MDT | Flash Flood Warning | BOU | Jefferson | 4 hr |
| Aug 18, 4:01 PM MDT | Flash Flood Warning | BOU | Larimer | 3 hr |
| Aug 18, 4:12 PM MDT | Flash Flood Warning | BOU | Denver | 3 hr |
| Aug 18, 4:30 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 45 min |
| Aug 18, 4:57 PM MDT | Flash Flood Warning | BOU | Arapahoe, Douglas | 3 hr |
| Aug 18, 5:15 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 45 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.