Alert archive / Colorado / Flash Flood Warnings in 1997
Flash Flood Warning 10, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this flash flood warning at Jul 27, 1997, 4:35 PM MDT for Jefferson County, Colorado. It was in force for 85 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 27, 1997, 4:35 PM MDT (22:35 UTC)
- Expired
- Jul 27, 1997, 6:00 PM MDT
- In force
- 85 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties
County Jefferson County, CO
The radar
The Denver radar (KFTG), 64 km from the middle of the area, began a volume at 22:39 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, 10.6 hours before the alert went out and 176 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1981 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- -24 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 272234
FFWDEN
COC059-280000-
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE DENVER CO
435 PM MDT SUN JUL 27 1997
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A FLASH FLOOD
WARNING UNTIL 600 PM MDT FOR PEOPLE IN THE FOLLOWING COUNTIES
IN NORTHEAST COLORADO
CENTRAL JEFFERSON
INCLUDING THE FOLLOWING LOCATIONS
GOLDEN...PLEASANT VIEW...AND IDLEDALE
AT 433 PM MDT...THE JEFFERSON COUNTY SHERIFF REPORTED THAT LENA
GULCH WAS ALREADY 2 FEET ABOVE BANKFULL LEVELS. PERSONS LIVING
ALONG LENA GULCH AND OTHER SMALL STREAMS SHOULD MOVE TO HIGHER
GROUND IMMEDIATELY!
AT 435 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY
HEAVY RAIN OCCURRING JUST SOUTHEAST OF DOWNTOWN GOLDEN. THIS STORM
WAS MOVING NORTH AT JUST 5 MPH.
RADAR AND SURFACE REPORTS ALREADY INDICATED ABOUT 1.6 INCHES OF RAIN
JUST SOUTHEAST OF GOLDEN. ADDITIONAL HEAVY RAINFALL WILL CAUSE
FLOODING OF SMALL CREEKS AND STREAMS...URBAN AREAS...STREETS AND6
UNDERPASSES...AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.
DO NOT DRIVE THROUGH FLOODED AREAS.
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 27, 2:51 PM MDT, 1 hour 44 minutes before
COZ040-272145- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 248 PM MDT SUN JUL 27 1997 ...THUNDERSTORM MOVING INTO SOUTHERN AND EASTERN SECTIONS OF DENVER... AT 245 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM NEAR LOUVIERS...OR ABOUT 15 MILES SOUTH OF DOWNTOWN DENVER. THE STORM WAS MOVING NORTH/NORTHEAST AT 15 MILES PER HOUR. PERSONS IN OR NEAR AURORA...CHERRY CREEK RESERVOIR... DENVER... ENGLEWOOD...LITTLETON... ARAPAHOE PARK...BEVERLY HILLS...GREENWOOD VILLAGE...HIGHLANDS RANCH...LOUVIERS...PARKER...AND SURREY RIDGE SHOULD BE ON THE LOOKOUT FOR VERY HEAVY RAIN AS THESE STORMS MOVE THROUGH YOUR AREA. BETWEEN 1 AND 2 INCHES OF RAIN CAN BE EXPECTED IN 30 MINUTES OR LESS. 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. SMALL HAIL AND GUSTY WINDS UP TO 40 MPH CAN ALSO BE EXPECTED WITH THE STORMS. BARJENBRUCH
Special weather statement, Jul 27, 3:03 PM MDT, 1 hour 32 minutes before
COZ041-272200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 303 PM MDT SUN JUL 27 1997 ...STRONG THUNDERSTORM IN WESTERN ELBERT COUNTY... AT 303 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER KIOWA...OR ABOUT 39 MILES SOUTHEAST OF DENVER. THE STORM WAS MOVING NORTHEAST AT 15 MILES PER HOUR. PERSONS FROM KIOWA AND POINTS NORTH AND EAST SHOULD BE ON THE LOOKOUT FOR VERY HEAVY RAIN. UP TO 2 INCHES OF RAIN CAN BE EXPECTED IN 30 MINUTES OR LESS. A BRIEF WEAK TORNADO IS ALSO POSSIBLE WITH THIS STORM. IF THREATENING WEATHER APPROACHES...MOVE TO A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. SMALL HAIL AND GUSTY WINDS UP TO 40 MPH CAN ALSO BE EXPECTED WITH THIS STORM. 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 27, 3:06 PM MDT, 1 hour 29 minutes before
COZ041-272200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 303 PM MDT SUN JUL 27 1997 ...STRONG THUNDERSTORM IN WESTERN ELBERT COUNTY... AT 303 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER KIOWA...OR ABOUT 39 MILES SOUTHEAST OF DENVER. THE STORM WAS MOVING NORTHEAST AT 15 MILES PER HOUR. PERSONS FROM KIOWA AND POINTS NORTH AND EAST SHOULD BE ON THE LOOKOUT FOR VERY HEAVY RAIN. UP TO 2 INCHES OF RAIN CAN BE EXPECTED IN 30 MINUTES OR LESS. A BRIEF WEAK TORNADO IS ALSO POSSIBLE WITH THIS STORM. IF THREATENING WEATHER APPROACHES...MOVE TO A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. SMALL HAIL AND GUSTY WINDS UP TO 40 MPH CAN ALSO BE EXPECTED WITH THIS STORM. 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 27, 3:22 PM MDT, 1 hour 13 minutes before
COZ046-049-272215- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 322 PM MDT SUN JUL 27 1997 ...STRONG THUNDERSTORM WITH VERY HEAVY RAIN IN EXTREME NORTHEASTERN LINCOLN COUNTY... AT 319 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM 4 MILES SOUTH OF THURMAN...OR ABOUT 30 MILES NORTHEAST OF LIMON. THE STORM WAS MOVING NORTHEAST AT JUST 5 MILES PER HOUR. PERSONS IN OR NEAR ANTON...ARICKAREE SCHOOL AND THURMAN SHOULD BE ON THE LOOKOUT FOR VERY HEAVY RAIN. BETWEEN 2 AND 3 INCHES OF RAIN CAN BE EXPECTED WITH THIS STORM IN AN HOUR OR LESS. HEAVY RAINS MAY FLOOD LOW LYING AREAS SUCH AS DITCHES LOW SPOTS IN ROADS. 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 27, 3:59 PM MDT, 36 minutes before
COZ041-045-046-272300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 400 PM MDT SUN JUL 27 1997 ...STRONG THUNDERSTORM IN SOUTHEASTERN ARAPAHOE AND NORTHEASTERN ELBERT COUNTIES OF COLORADO... AT 400 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM 16 MILES SOUTHWEST OF AGATE...OR ABOUT 24 MILES WEST OF LIMON. THE STORM WAS MOVING NORTHEAST AT 10 TO 15 MILES AN HOUR. PERSONS IN OR NEAR AGATE AND DEER TRAIL SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND MOVE TO A PLACE OF SAFETY IF BAD WEATHER APPROACHES. DANGEROUS LIGHTNING...SMALL HAIL...BRIEF HEAVY RAIN...AND GUSTY WINDS WILL OCCUR WITH THIS STORM UNTIL 500 PM MDT THIS AFTERNOON. HEAVY RAINS...UP TO 2.00 INCHES AN HOUR...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. GARD...WSFO DENVER
Special weather statement, Jul 27, 4:00 PM MDT, 35 minutes before
COZ041-045-046-272300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 400 PM MDT SUN JUL 27 1997 ...STRONG THUNDERSTORM IN SOUTHEASTERN ARAPAHOE AND NORTHEASTERN ELBERT COUNTIES OF COLORADO... AT 400 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM 16 MILES SOUTHWEST OF AGATE...OR ABOUT 24 MILES WEST OF LIMON. THE STORM WAS MOVING NORTHEAST AT 10 TO 15 MILES AN HOUR. PERSONS IN OR NEAR AGATE AND DEER TRAIL SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER AND MOVE TO A PLACE OF SAFETY IF BAD WEATHER APPROACHES. DANGEROUS LIGHTNING...SMALL HAIL...BRIEF HEAVY RAIN...AND GUSTY WINDS WILL OCCUR WITH THIS STORM UNTIL 500 PM MDT THIS AFTERNOON. HEAVY RAINS...UP TO 2.00 INCHES AN HOUR...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. GARD...WSFO DENVER
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 4:57 PM MDT | Tornado Warning | BOU | Elbert, Lincoln | 33 min |
| Jul 27, 5:30 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 45 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; radar from the NEXRAD Level II archive.