Alert archive / Colorado / Flash Flood Warnings in 1997
Flash Flood Warning 39, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this flash flood warning at Jul 31, 1997, 6:15 PM MDT for Logan County, Morgan County, Weld 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 the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Jul 31, 1997, 6:15 PM MDT (00:15 UTC)
- Expired
- Jul 31, 1997, 9:00 PM MDT
- In force
- 3 hr
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Logan County, CO, Morgan County, CO, Weld County, CO
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 0.3 hours before the alert went out and 92 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
- 335 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 854 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDEN 010019
FFWDEN
COC075-087-123-010200-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DENVER CO
615 PM MDT THU JUL 31 1997
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A FLASH FLOOD
WARNING EFFECTIVE UNTIL 900 PM MDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN NORTHEAST COLORADO
EAST CENTRAL WELD...NORTHEASTERN MORGAN AND WESTERN LOGAN
INCLUDING THE FOLLOWING LOCATIONS
STERLING...ANTELOPE SPRINGS...ILIFF...LOGAN CORNERS...NORTH
STERLING RESERVOIR...PADRONI...PAWNEE PASS...STONEHAM AND
WILLARD
AT 610 PM MDT WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN
OVER NORTHERN MORGAN...SOUTHEAST WELD AND WESTERN LOGAN COUNTIES.
ANOTHER AREA OF HEAVY RAIN WAS MOVING ACROSS WESTERN MORGAN COUNTY.
DOPPLER RADAR ESTIMATES INDICATED UP TO 1 INCH HAD FALLEN OVER
NORTHERN MORGAN COUNTY...AND 1 TO 1 1/2 INCHES HAD FALLEN OVER
WESTERN LOGAN COUNTY.
EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS SUCH AS WILDHORSE CREEK IN WELD COUNTY...WILDCAT
CREEK IN MORGAN COUNTY AND SPRING CREEK AND STERLING CANAL IN LOGAN
COUNTY. FLASH FLOODING WILL ALSO OCCUR OVER COUNTY ROADS AND OVER
WASHES AND ARROYOS...AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS
AND STREAMS.
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.
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.
TO REPORT SEVERE WEATHER HAVE THE NEAREST LAW ENFORCEMENT AGENCY
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN
DENVER.
LESZCYNSKI
LAT...LON 4094 10322 4074 10297 4030 10372 4049 10391The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 6:15 PM MDT | Flash Flood Warning | BOU | Elbert | 3 hr |
Nearby
Flash Flood Warnings in Colorado, 1997Every flash flood warning in 1997
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.