Alert archive / Colorado / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 107, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 27, 1997, 5:30 PM MDT for Lincoln County, Colorado. It was in force for 45 min. 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 27, 1997, 5:30 PM MDT (23:30 UTC)
- Expired
- Jul 27, 1997, 6:15 PM MDT
- In force
- 45 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Lincoln County, CO
The radar
The Denver radar (KFTG), 111 km from the middle of the area, began a volume at 23:33 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, 11.5 hours before the alert went out and 60 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.
269
WUUS1 KDEN 272328 RRA
SVRDEN
COC073-280015-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
530 PM MDT SUN JUL 27 1997
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 615 PM MDT FOR PEOPLE IN THE
FOLLOWING COUNTIES...
IN EAST CENTRAL COLORADO
NORTHEASTERN LINCOLN
INCLUDING THE FOLLOWING LOCATIONS
ARRIBA AND GENOA
AT 527 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM 6 MILES NORTHWEST OF GENOA...OR ABOUT 8 MILES
NORTHEAST OF LIMON.
AT 516 PM MDT THE PUBLIC REPORTED WINDOWS BLOWN OUT IN LIMON.
THE STORM WAS MOVING EAST AT 15 TO 20 MILES AN HOUR.
SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH
LITTLE OR NO ADVANCE WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN
A STURDY STRUCTURE SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A
TORNADO IS SPOTTED.
REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN DENVER.
GARD...WSFO DENVER
&
LAT...LON 3949 10317 3908 10319 3925 10369 3942 10369What forecasters said that day
The local office's own words before this severe thunderstorm 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, 3:06 PM MDT, 2 hours 24 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, 2 hours 8 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, 1 hour 31 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, 1 hour 30 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, 5:15 PM MDT, 15 minutes before
COZ035-038-272345- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 515 PM MDT SUN JUL 27 1997 ...THUNDERSTORMS WITH HEAVY RAIN IN EAST CENTRAL LARIMER COUNTY... AT 515 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM WITH HEAVY RAIN 2 MILES SOUTHWEST OF TEDS PLACE...OR ABOUT 8 MILES NORTHWEST OF FORT COLLINS. THE STORM WAS MOVING WEST AT 15 MILES PER HOUR. PERSONS IN OR NEAR FORT COLLINS...BELLVUE...BUCKHORN MOUNTAIN... POUDRE PARK...TEDS PLACE AND WELLINGTON SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER. AND MOVE TO A PLACE OF SAFETY IF BAD WEATHER APPROACHES. WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES...UNLESS IN AN EMERGENCY...UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS. RTG
Special weather statement, Jul 27, 5:16 PM MDT, 14 minutes before
COZ035-038-272345- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 515 PM MDT SUN JUL 27 1997 ...THUNDERSTORMS WITH HEAVY RAIN IN EAST CENTRAL LARIMER COUNTY... AT 515 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A THUNDERSTORM WITH HEAVY RAIN 2 MILES SOUTHWEST OF TEDS PLACE...OR ABOUT 8 MILES NORTHWEST OF FORT COLLINS. THE STORM WAS MOVING WEST AT 15 MILES PER HOUR. PERSONS IN OR NEAR FORT COLLINS...BELLVUE...BUCKHORN MOUNTAIN... POUDRE PARK...TEDS PLACE AND WELLINGTON SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER. AND MOVE TO A PLACE OF SAFETY IF BAD WEATHER APPROACHES. WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES...UNLESS IN AN EMERGENCY...UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS. RTG
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 4:35 PM MDT | Flash Flood Warning | BOU | Jefferson | 85 min |
| Jul 27, 4:57 PM MDT | Tornado Warning | BOU | Elbert, Lincoln | 33 min |
Nearby
Severe Thunderstorm Warnings in Colorado, 1997Every severe thunderstorm 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.