Alert archive / Colorado / Flash Flood Warnings in 2000
Flash Flood Warning 4, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this flash flood warning at Jul 16, 2000, 8:24 PM MDT for Jefferson County, Colorado. It was in force for 96 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
- Jul 16, 2000, 8:24 PM MDT (02:24 UTC)
- Expired
- Jul 16, 2000, 10:00 PM MDT
- In force
- 96 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Jefferson County, CO
The radar
The Denver radar (KFTG), 55 km from the middle of the area, began a volume at 02:28 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 00:00Z, 2.4 hours before the alert went out and 168 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
- 100 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 2053 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -17 m²/s²
- 0-3 km storm-relative helicity
- -12 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 170225 FFWBOU COC059-170400- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE DENVER CO 824 PM MDT SUN JUL 16 2000 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * FLASH FLOOD WARNING FOR... NORTHEASTERN JEFFERSON COUNTY IN NORTHEAST COLORADO * UNTIL 1000 PM MDT * AT 816 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN OVER ROCKY FLATS...OR ABOUT 15 MILES NORTHWEST OF DENVER. THE STORM PRODUCING THE HEAVY RAIN WAS MOVING VERY SLOWLY. LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...WHEAT RIDGE...WESTMINSTER...NORTHWESTERN LAKEWOOD...GOLDEN...ARVADA AND ROCKY FLATS 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...UP TO 3 INCHES OF RAINFALL...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 WARNING INCLUDES LENA GULCH FROM COLFAX AVE NORTH TO CLEAR CREEK. LAT...LON 3973 10529 3974 10505 3990 10506 3990 10528 GARD...WFO BOULDER
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 9:50 PM MDT | Flash Flood Warning | BOU | Larimer | 85 min |
| Jul 17, 1:31 PM MDT | Flash Flood Warning | BOU | Jefferson | 119 min |
| Jul 17, 4:08 PM MDT | Tornado Warning | BOU | Elbert | 37 min |
| Jul 17, 4:37 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 38 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.