Alert archive / Colorado / Flash Flood Warnings in 2000
Flash Flood Warning 11, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this flash flood warning at Aug 17, 2000, 5:25 PM MDT for Adams County, Denver County, Weld County, Colorado. It was in force for 65 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Aug 17, 2000, 5:25 PM MDT (23:25 UTC)
- Expired
- Aug 17, 2000, 6:30 PM MDT
- In force
- 65 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Adams County, CO, Denver County, CO, Weld County, CO
The radar
The Denver radar (KFTG), 31 km from the middle of the area, began a volume at 23:28 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, 11.4 hours before the alert went out and 141 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
- 75 J/kg
- Mixed-layer CIN
- -106 J/kg
- Mixed-layer LCL
- 1272 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 42 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 172324 FFWBOU COC001-031-123-180030- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DENVER CO 525 PM MDT THU AUG 17 2000 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * FLASH FLOOD WARNING FOR...NORTHEAST METRO DENVER INCLUDING... WESTERN ADAMS COUNTY IN NORTHEAST COLORADO NORTHERN DENVER COUNTY IN NORTHEAST COLORADO EXTREME SOUTHWESTERN WELD COUNTY IN NORTHEAST COLORADO * UNTIL 630 PM MDT * AT 520 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN OVER COMMERCE CITY...OR ABOUT 6 MILES NORTHEAST OF DENVER. THE STORM PRODUCING THE HEAVY RAIN WAS MOVING NORTHEAST AT 10 MPH. LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO... THORNTON...NORTHGLENN...WESTERN DENVER INTERNATIONAL AIRPORT... NORTHERN DENVER...COMMERCE CITY...NORTHWESTERN AURORA...LOCHBUIE... FREDERICK...DACONO...BRIGHTON AND BARR LAKE. 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. DOPPLER RADAR ESTIMATES UP TO 3 INCHES OF RAINFALL IN AN HOUR. EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS. THIS FLASH FLOOD WARNING REPLACES THE EARLIER WARNING FOR METRO DENVER. RAIN HAS DECRZEASED OVER SOUTHERN METRO DENVER. LAT...LON 3976 10503 3972 10485 4000 10457 4012 10496 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 17, 3:45 PM MDT | Flash Flood Warning | BOU | Jefferson | 90 min |
| Aug 17, 4:37 PM MDT | Flash Flood Warning | BOU | Adams, Arapahoe, Denver, Douglas, Jefferson | 83 min |
Nearby
Flash Flood Warnings in Colorado, 2000Every flash flood warning in 2000
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.