Alert archive / Colorado / Flash Flood Warnings in 1997
Flash Flood Warning 11, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this flash flood warning at Jul 28, 1997, 4:57 PM MDT for Weld 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
- Jul 28, 1997, 4:57 PM MDT (22:57 UTC)
- Expired
- Jul 28, 1997, 7:00 PM MDT
- In force
- 2 hr
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Weld County, CO
The radar
The Denver radar (KFTG), 39 km from the middle of the area, began a volume at 22:56 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, 11.0 hours before the alert went out and 128 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
- 49 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 819 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 78 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 282313
FFWDEN
COC123-290100-
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING...CORRECTED
NATIONAL WEATHER SERVICE DENVER CO
457 PM MDT MON JUL 28 1997
CORRECTED HEADER
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A FLASH FLOOD
WARNING EFFECTIVE UNTIL 700 PM MDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN NORTHEAST COLORADO
SOUTHWESTERN WELD
INCLUDING THE FOLLOWING LOCATIONS
FORT LUPTON AND LOCHBUIE
AT 457 PM MDT WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN
OVER SOUTHWESTERN WELD COUNTY. THE HEAVIEST RAIN WAS OCCURRING
ABOUT 4 MILES NORTHWEST OF HUDSON...OR ABOUT 25 MILES NORTHEAST OF
DENVER. UP TO 4 INCHES OF RAIN HAD ALREADY FALLEN...AND ADDITIONAL
RAIN WILL FALL AT THE RATE OF 2 INCHES IN 45 MINUTES OR LESS.
EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER
LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING.
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.
LAT...LON 4021 10457 4012 10458 4001 10471 4000 10497 4016 10478
BARJENBRUCHWhat 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, Jul 28, 11:01 AM MDT, 5 hours 56 minutes before
COZ030-032>050-290600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 1115 AM MDT DAY MON JUL 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 MOIST AND RELATIVELY UNSTABLE AIRMASS WILL CONTINUE OVER THE REGION TODAY. WIDESPREAD SHOWERS AND SCATTERED THUNDERSTORMS WILL DEVELOP BY MID AFTERNOON...ESPECIALLY IN AN NEAR THE FOOTHILLS AND OVER THE PALMER DIVIDE AREA. AS A RESULT LOCALLY HEAVY RAINFALL WILL AGAIN CAUSE SOME FLOODING PROBLEMS. RADAR ESTIMATED UP TO 4 INCHES OF RAINFALL SINCE 6 AM THIS MORNING SOUTHWEST OF POUDRE PARK IN EASTERN LARIMER COUNTY. AS A RESULT MINOR FLOODING PROBLEMS BEEN REPORTED IN THIS AREA. LOW LEVEL UPSLOPE WILL CONTINUE OVER THE AREA THROUGH THE AFTERNOON. EXTENSIVE CLOUD COVER WILL LIMIT THE AMOUT OF HEATING WE RECIEVE THIS AFTERNOON. SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY BUT ANY RAINFALL AND ANY REPORTS OF FLOODING WOULD BE GREATLY APPRECIATED. CONTINUE TO MONITOR NOAA RADIO OR YOUR LOCAL NEW MEDIA FOR THE POSSIBLE ISSUANCE OF A FLASH FLOOD WATCH LATER TODAY. FMC
Special weather statement, Jul 28, 11:02 AM MDT, 5 hours 55 minutes before
COZ030-032>050-290600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 1115 AM MDT MON JUL 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 MOIST AND RELATIVELY UNSTABLE AIRMASS WILL CONTINUE OVER THE REGION TODAY. WIDESPREAD SHOWERS AND SCATTERED THUNDERSTORMS WILL DEVELOP BY MID AFTERNOON...ESPECIALLY IN AN NEAR THE FOOTHILLS AND OVER THE PALMER DIVIDE AREA. AS A RESULT LOCALLY HEAVY RAINFALL WILL AGAIN CAUSE SOME FLOODING PROBLEMS. RADAR ESTIMATED UP TO 4 INCHES OF RAINFALL SINCE 6 AM THIS MORNING SOUTHWEST OF POUDRE PARK IN EASTERN LARIMER COUNTY. AS A RESULT MINOR FLOODING PROBLEMS BEEN REPORTED IN THIS AREA. LOW LEVEL UPSLOPE WILL CONTINUE OVER THE AREA THROUGH THE AFTERNOON. EXTENSIVE CLOUD COVER WILL LIMIT THE AMOUT OF HEATING WE RECIEVE THIS AFTERNOON. SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY BUT ANY RAINFALL AND ANY REPORTS OF FLOODING WOULD BE GREATLY APPRECIATED. CONTINUE TO MONITOR NOAA RADIO OR YOUR LOCAL NEW MEDIA FOR THE POSSIBLE ISSUANCE OF A FLASH FLOOD WATCH LATER TODAY. FMC
Special weather statement, Jul 28, 11:15 AM MDT, 5 hours 42 minutes before
COZ030-032>050-290600- SIGNIFICANT WEATHER OUTLOOK FOR NORTHEAST AND NORTH CENTRAL COLORADO NATIONAL WEATHER SERVICE DENVER CO 1115 AM MDT MON JUL 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 MOIST AND RELATIVELY UNSTABLE AIRMASS WILL CONTINUE OVER THE REGION TODAY. WIDESPREAD SHOWERS AND SCATTERED THUNDERSTORMS WILL DEVELOP BY MID AFTERNOON...ESPECIALLY IN AN NEAR THE FOOTHILLS AND OVER THE PALMER DIVIDE AREA. AS A RESULT LOCALLY HEAVY RAINFALL WILL AGAIN CAUSE SOME FLOODING PROBLEMS. RADAR ESTIMATED UP TO 4 INCHES OF RAINFALL SINCE 6 AM THIS MORNING SOUTHWEST OF POUDRE PARK IN EASTERN LARIMER COUNTY. AS A RESULT MINOR FLOODING PROBLEMS BEEN REPORTED IN THIS AREA. LOW LEVEL UPSLOPE WILL CONTINUE OVER THE AREA THROUGH THE AFTERNOON. EXTENSIVE CLOUD COVER WILL LIMIT THE AMOUT OF HEATING WE RECIEVE THIS AFTERNOON. SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY BUT ANY RAINFALL AND ANY REPORTS OF FLOODING WOULD BE GREATLY APPRECIATED. CONTINUE TO MONITOR NOAA RADIO OR YOUR LOCAL NEW MEDIA FOR THE POSSIBLE ISSUANCE OF A FLASH FLOOD WATCH LATER TODAY. FMC
Special weather statement, Jul 28, 3:44 PM MDT, 1 hour 13 minutes before
COZ043-282245- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 344 PM MDT MON JUL 28 1997 ...STRONG THUNDERSTORM IN SOUTHERN WELD COUNTY.. AT 341 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM 5 MILES NORTHEAST OF FORT LUPTON...OR ABOUT 20 MILES SOUTH OF GREELEY. THIS STORM WAS PRODUCING A FUNNEL CLOUD. PERSONS BETWEEN FORT LUPTON AND MILTON RESERVOIR SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER. MOVE TO A PLACE OF SAFETY IF A FUNNEL CLOUD APPROACHES. THE STORM WAS MOVING NORTHEAST AT 10 MILES PER HOUR. DUE TO THE SLOW MOVEMENT...VERY HEAVY RAIN CAN ALSO BE EXPECTED WITH THE STORM. UP TO 2 INCHES WILL FALL IN LESS THAN AN HOUR. HEAVY RAINS MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS AS THEY MAY BE WASHED OUT. WATER LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE...THEREFORE SEEK HIGHER GROUND IF THREATENED BY FLOOD WATERS. BARJENBRUCH
Special weather statement, Jul 28, 3:59 PM MDT, 58 minutes before
COZ034-036-037-040-282300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 400 PM MDT MON JUL 28 1997 ...THUNDERSTORMS WITH HEAVY RAIN IN THE FOOTHILLS WEST OF DENVER... AT 400 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF THUNDERSTORMS FROM JUST WEST OF GOLDEN TO BAILEY...AND THEN INTO CENTRAL PARK COUNTY. THE STRONGEST STORM WAS OVER EVERGREEN...OR ABOUT 20 MILES SOUTHWEST OF DOWNTOWN DENVER. THE STORMS WERE MOVING VERY SLOWLY NORTHEAST AT 5 MILES PER HOUR. PERSONS IN OR NEAR GOLDEN...ANTERO RESERVOIR...ASPEN PARK...BAILEY... BERGEN PARK...COMO...CONIFER...EVERGREEN...FAIRPLAY...PARK... HARTSEL...HIGHLAND PARK...IDLEDALE...INDIAN HILLS...JEFFERSON... KITTREDGE...PINE...RED HILL PASS...SHAWNEE...TARRYALL RESERVOIR...TINY TOWN...WELLINGTON LAKE AND WHITE RANCH OPEN SPACE SHOULD BE ON THE LOOKOUT FOR VERY HEAVY RAIN. THE STRONGEST STORMS IN THIS LINE WILL PRODUCE BETWEEN 1 AND 2 INCHES OF RAIN IN AN HOUR. HEAVY RAINS MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS AS THEY MAY BE WASHED OUT. WATER LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE...THEREFOtRE SEEK HIGHER GROUND IF THREATENED BY FLOOD WATERS. BARJENBRUCH
Special weather statement, Jul 28, 4:00 PM MDT, 57 minutes before
COZ034-036-037-040-282300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 400 PM MDT MON JUL 28 1997 ...THUNDERSTORMS WITH HEAVY RAIN IN THE FOOTHILLS WEST OF DENVER... AT 400 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF THUNDERSTORMS FROM JUST WEST OF GOLDEN TO BAILEY...AND THEN INTO CENTRAL PARK COUNTY. THE STRONGEST STORM WAS OVER EVERGREEN...OR ABOUT 20 MILES SOUTHWEST OF DOWNTOWN DENVER. THE STORMS WERE MOVING VERY SLOWLY NORTHEAST AT 5 MILES PER HOUR. PERSONS IN OR NEAR GOLDEN...ANTERO RESERVOIR...ASPEN PARK...BAILEY... BERGEN PARK...COMO...CONIFER...EVERGREEN...FAIRPLAY...PARK... HARTSEL...HIGHLAND PARK...IDLEDALE...INDIAN HILLS...JEFFERSON... KITTREDGE...PINE...RED HILL PASS...SHAWNEE...TARRYALL RESERVOIR...TINY TOWN...WELLINGTON LAKE AND WHITE RANCH OPEN SPACE SHOULD BE ON THE LOOKOUT FOR VERY HEAVY RAIN. THE STRONGEST STORMS IN THIS LINE WILL PRODUCE BETWEEN 1 AND 2 INCHES OF RAIN IN AN HOUR. HEAVY RAINS MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES. AVOID THESE AREAS AND DO NOT CROSS FLOODED ROADS AS THEY MAY BE WASHED OUT. WATER LEVELS OF SMALL STREAMS AND RIVERS MAY ALSO RISE...THEREFORE SEEK HIGHER GROUND IF THREATENED BY FLOOD WATERS. BARJENBRUCH
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; radar from the NEXRAD Level II archive.