Alert archive / Colorado / Flash Flood Warnings in 2000

Flash Flood Warning 7, NWS Denver/Boulder, CO

August 16, 2000Larimer County, Colorado

NWS Denver/Boulder, CO issued this flash flood warning at Aug 16, 2000, 1:45 PM MDT for Larimer County, Colorado. It was in force for 2 hr. 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 16, 2000, 1:45 PM MDT (19:45 UTC)
Expired
Aug 16, 2000, 3:45 PM MDT
In force
2 hr
Issued by
NWS Denver/Boulder, CO
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Larimer County, CO

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 7.8 hours before the alert went out and 184 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.

Skew-T log-pSkew-T log-p diagram, Denver, CO at 12:00Z on 2000-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 110 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2000-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -1 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
110 J/kg
Mixed-layer CIN
-216 J/kg
Mixed-layer LCL
1743 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-1 m²/s²
0-3 km storm-relative helicity
86 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS55 KBOU 161948 COR
FFWDEN
COC069-162145-

BULLETIN - EAS ACTIVATION REQUESTED...CORRECTION...
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DENVER CO
145 PM MDT WED AUG 16 2000

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTH CENTRAL LARIMER COUNTY IN NORTH CENTRAL COLORADO

* UNTIL 345 PM MDT

* AT 141 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
VERY HEAVY RAIN OVER THE BOBCAT BURN AREA JUST NORTH OF DRAKE...OR 
ABOUT  20 MILES SOUTHWEST OF FORT COLLINS.  THE STORMS PRODUCING THE 
HEAVY RAIN WERE MOVING SLOWLY EAST AT 5 MPH.  OTHER STORMS WERE WEST 
OF THE AREA...AND WILL BE MOVING OVER THE AREA BY 3PM.  

LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED 
TO...MASONVILLE AND DRAKE.

AUTOMATED RAIN GAGES IN THE BURN AREA RECORDED 1.14 INCHES OF RAIN 
HAD FALLEN SINCE 1230 PM. 

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.

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 4047 10519 4040 10515 4041 10530 4044 10540
          4048 10534


LESZCYNSKI

The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 15, 6:00 PM MDTSevere Thunderstorm WarningBOUWeld30 min
Aug 16, 3:55 PM MDTFlash Flood WarningBOULarimer65 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.