Alert archive / Colorado / Flash Flood Warnings in 1997
Flash Flood Warning 43, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this flash flood warning at Aug 28, 1997, 2:00 PM MDT for Elbert County, Lincoln 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 28, 1997, 2:00 PM MDT (20:00 UTC)
- Expired
- Aug 28, 1997, 4:00 PM MDT
- In force
- 2 hr
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Elbert County, CO, Lincoln County, CO
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 8.0 hours before the alert went out and 94 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
- 70 J/kg
- Mixed-layer CIN
- -227 J/kg
- Mixed-layer LCL
- 2137 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 36 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 282000
FFWDEN
COC039-073-282200-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING AND SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
200 PM MDT THU AUG 28 1997
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A FLASH FLOOD
WARNING AND SEVERE THUNDERSTORM EFFECTIVE UNTIL 400 PM MDT FOR
PEOPLE IN THE FOLLOWING COUNTIES
IN EAST CENTRAL COLORADO
SOUTHEASTERN ELBERT AND CENTRAL LINCOLN
INCLUDING THE FOLLOWING LOCATIONS
HUGO
AT 155 PM MDT WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN
CAPABLE OF PRODUCING UP TO 2 TO 3 INCHES IN AN HOUR ABOUT 20 MILES
SOUTH SOUTHEAST OF LIMON. IN ADDITION...THIS STORM HAS A HISTORY OF
PRODUCING GOLF BALL SIZE HAIL.
PERSONS IN OR NEAR SMALL CREEKS AND STREAMS...INCLUDING RUSH CREEK
SHOULD BE ON THE LOOKOUT FOR RAPID RISES IN WATER LEVELS.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY.
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.
HERRALD
LAT...LON 3911 10332 3896 10343 3894 10370 3901 10381
3915 10364 3913 10349What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Aug 28, 11:30 AM MDT, 2 hours 30 minutes before
COZ030-032>050-290600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 1130 AM MDT THU AUG 28 1997 THIS OUTLOOK PERTAINS TO THE FOLLOWING COLORADO COUNTIES ADAMS ARAPAHOE BOULDER CLEAR CREEK DENVER DOUGLAS ELBERT GILPIN GRAND JACKSON JEFFERSON LARIMER LINCOLN LOGAN MORGAN PARK PHILLIPS SEDGWICK SUMMIT WASHINGTON WELD SYNOPSIS: A NARROW STREAM OF MONSOONAL MOISTURE CONTINUES TO MOVE OVER COLORADO TODAY AS AN UPPER LEVEL HIGH PRESSURE AREA REMAINS ENTRENCHED OVER THE REGION. A WEAK UPPER LEVEL WEATHER DISTURBANCE IS ROTATING AROUND THE HIGH PRESSURE RIDGE THIS MORNING AND WAS LOCATED OVER SOUTHERN WYOMING. THIS SYSTEM WILL MOVE EASTWARD THROUGH THE EVENING AND MAY ASSIST SHOWER AND THUNDERSTORM DEVELOPMENT ON THE PLAINS BY THIS EVENING. SURFACE WINDS ON THE NORTHEAST COLORADO PLAINS ARE GENERALLY WEAK TODAY WHICH MEANS THERE ARE NO FAVORED AREAS FOR THUNDERSTORM DEVELOPMENT LATER THIS AFTERNOON. EXCEPT FOR A LINE OF SHOWERS DEVELOPING OVER A BOUNDARY IN CENTRAL LINCOLN COUNTY LATE THIS MORNING...OTHER SHOWERS THAT DEVELOP SHOULD BE CAUSED BY AFTERNOON HEATING OVER THE FOOTHILLS. THUNDERSTORMS WILL THEN PROGRESS EASTWARD THROUGH THE LATE AFTERNOON AND EVENING. WITH THE WEAK UPPER LEVEL DISTURBANCE MOVING ACROSS WYOMING...THE STORMS WITH THE BEST CHANCE OF BECOMING STRONGER THAN NORMAL WILL BE IN LARIMER...WELD AND LOGAN COUNTIES. WINDS ALOFT WILL BE STRONG ENOUGH TO KEEP STORMS MOVING...WHICH WILL MINIMIZE THE THREAT OF HEAVY RAINS. STORMS WILL HAVE THE POTENTIAL TO PRODUCE SMALL HAIL. STORMS ARE NOT EXPECTED TO REACH SEVERE LIMITS AND SPOTTER ACTIVATION IS NOT EXPECTED. DANKERS
Special weather statement, Aug 28, 11:32 AM MDT, 2 hours 28 minutes before
COZ030-032>050-290600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 1130 AM MDT THU AUG 28 1997 THIS OUTLOOK PERTAINS TO THE FOLLOWING COLORADO COUNTIES ADAMS ARAPAHOE BOULDER CLEAR CREEK DENVER DOUGLAS ELBERT GILPIN GRAND JACKSON JEFFERSON LARIMER LINCOLN LOGAN MORGAN PARK PHILLIPS SEDGWICK SUMMIT WASHINGTON WELD SYNOPSIS: A NARROW STREAM OF MONSOONAL MOISTURE CONTINUES TO MOVE OVER COLORADO TODAY AS AN UPPER LEVEL HIGH PRESSURE AREA REMAINS ENTRENCHED OVER THE REGION. A WEAK UPPER LEVEL WEATHER DISTURBANCE IS ROTATING AROUND THE HIGH PRESSURE RIDGE THIS MORNING AND WAS LOCATED OVER SOUTHERN WYOMING. THIS SYSTEM WILL MOVE EASTWARD THROUGH THE EVENING AND MAY ASSIST SHOWER AND THUNDERSTORM DEVELOPMENT ON THE PLAINS BY THIS EVENING. SURFACE WINDS ON THE NORTHEAST COLORADO PLAINS ARE GENERALLY WEAK TODAY WHICH MEANS THERE ARE NO FAVORED AREAS FOR THUNDERSTORM DEVELOPMENT LATER THIS AFTERNOON. EXCEPT FOR A LINE OF SHOWERS DEVELOPING OVER A BOUNDARY IN CENTRAL LINCOLN COUNTY LATE THIS MORNING...OTHER SHOWERS THAT DEVELOP SHOULD BE CAUSED BY AFTERNOON HEATING OVER THE FOOTHILLS. THUNDERSTORMS WILL THEN PROGRESS EASTWARD THROUGH THE LATE AFTERNOON AND EVENING. WITH THE WEAK UPPER LEVEL DISTURBANCE MOVING ACROSS WYOMING...THE STORMS WITH THE BEST CHANCE OF BECOMING STRONGER THAN NORMAL WILL BE IN LARIMER...WELD AND LOGAN COUNTIES. WINDS ALOFT WILL BE STRONG ENOUGH TO KEEP STORMS MOVING...WHICH WILL MINIMIZE THE THREAT OF HEAVY RAINS. STORMS WILL HAVE THE POTENTIAL TO PRODUCE SMALL HAIL. STORMS ARE NOT EXPECTED TO REACH SEVERE LIMITS AND SPOTTER ACTIVATION IS NOT EXPECTED. DANKERS
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 12:25 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 65 min |
| Aug 28, 2:00 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 2 hr |
| Aug 28, 4:58 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Elbert | 47 min |
| Aug 28, 5:34 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 41 min |
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.