Alert archive / Colorado / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 100, NWS Denver/Boulder, CO

July 7, 1997Lincoln County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jul 7, 1997, 6:50 PM MDT for Lincoln County, Colorado. It was in force for 25 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 7, 1997, 6:50 PM MDT (00:50 UTC)
Expired
Jul 7, 1997, 7:15 PM MDT
In force
25 min
Issued by
NWS Denver/Boulder, CO
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Lincoln County, CO

The radar

The Pueblo radar (KPUX), 118 km from the middle of the area, began a volume at 00:52 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 00:00Z, 0.8 hours before the alert went out and 76 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.

Skew-T log-pSkew-T log-p diagram, Denver, CO at 00:00Z on 1997-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 135 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 00:00Z on 1997-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
135 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
3732 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
126 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KDEN 080052 RRA
SVRDEN
COC073-080115-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
650 PM MDT MON JUL 7 1997

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 715 PM MDT FOR PEOPLE IN THE
FOLLOWING COUNTY...

IN EAST CENTRAL COLORADO
     NORTHEASTERN LINCOLN 

INCLUDING THE FOLLOWING LOCATIONS
     ARRIBA 

AT 648 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM 8 MILES SOUTH OF ARRIBA...OR ABOUT 25 MILES EAST
OF LIMON.

THE STORM WAS STATIONARY.

LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. IF YOU ARE IN 
THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A 
SUBSTANTIAL SHELTER.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN DENVER.

DANKERS
LAT...LON 3919 10291 3892 10326 3919 10361 3946 10326

P

What 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 7, 5:32 PM MDT, 1 hour 18 minutes before
COZ046-047-080015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
532 PM MDT MON JUL 7 1997

...THUNDERSTORM IN CENTRAL LINCOLN COUNTY...

AT 532 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM OVER HUGO...OR ABOUT 14 MILES SOUTHEAST OF LIMON.

THE STORM WAS MOVING SOUTHEAST AT 20 MILES PER HOUR.

PERSONS IN OR NEAR BOYERO...GENOA AND HUGO SHOULD BE ON THE LOOKOUT
FOR THREATENING WEATHER AND MOVE TO A PLACE OF SAFETY IF BAD WEATHER
APPROACHES.

DANGEROUS LIGHTNING...HAIL UP TO A HALF INCH IN DIAMETER...BRIEF
HEAVY RAIN...AND GUSTY WINDS UP TO 50 MPH WILL OCCUR WITH THIS STORM.

DANKERS
Special weather statement, Jul 7, 5:34 PM MDT, 1 hour 16 minutes before
COZ046-047-080015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
532 PM MDT MON JUL 7 1997

...THUNDERSTORM IN CENTRAL LINCOLN COUNTY...

AT 532 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM OVER HUGO...OR ABOUT 14 MILES SOUTHEAST OF LIMON.

THE STORM WAS MOVING SOUTHEAST AT 20 MILES PER HOUR.

PERSONS IN OR NEAR BOYERO...GENOA AND HUGO SHOULD BE ON THE LOOKOUT
FOR THREATENING WEATHER AND MOVE TO A PLACE OF SAFETY IF BAD WEATHER
APPROACHES.

DANGEROUS LIGHTNING...HAIL UP TO A HALF INCH IN DIAMETER...BRIEF
HEAVY RAIN...AND GUSTY WINDS UP TO 50 MPH WILL OCCUR WITH THIS STORM.

DANKERS
Special weather statement, Jul 7, 5:52 PM MDT, 58 minutes before
COZ040-041-045-080045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
552 PM MDT MON JUL 7 1997

...THUNDERSTORMS IN ARAPAHOE AND NORTH-CENTRAL ELBERT COUNTIES...

AT 552 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM 8 MILES SOUTH OF COUNTRY GARDENS...OR ABOUT 12 MILES
SOUTH OF BYERS.

THE STORM WAS MOVING EAST AT 15 MILES PER HOUR.

OTHER STORMS WERE ALSO DEVELOPING ALONG A LINE STRETCHING FROM
SOUTHERN AURORA TO NEAR AGATE.

PERSONS IN OR NEAR SOUTHERN AURORA...SOUTHEASTERN DENVER...ARAPAHOE
PARK...COUNTRY GARDENS AND DEER TRAIL SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER AND MOVE TO A PLACE OF SAFETY WHILE
THUNDERSTORMS PASS OVERHEAD.

DANGEROUS LIGHTNING...HAIL UP TO A HALF INCH IN DIAMETER...BRIEF
HEAVY RAIN...AND GUSTY WINDS UP TO 50 MPH MAY OCCUR WITH THESE STORMS.

DANKERS
Special weather statement, Jul 7, 5:57 PM MDT, 53 minutes before
COZ040-041-045-080045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
552 PM MDT MON JUL 7 1997

...THUNDERSTORMS IN ARAPAHOE AND NORTH-CENTRAL ELBERT COUNTIES...

AT 552 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM 8 MILES SOUTH OF COUNTRY GARDENS...OR ABOUT 12 MILES
SOUTH OF BYERS.

THE STORM WAS MOVING EAST AT 15 MILES PER HOUR.

OTHER STORMS WERE ALSO DEVELOPING ALONG A LINE STRETCHING FROM
SOUTHERN AURORA TO NEAR AGATE.

PERSONS IN OR NEAR SOUTHERN AURORA...SOUTHEASTERN DENVER...ARAPAHOE
PARK...COUNTRY GARDENS AND DEER TRAIL SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER AND MOVE TO A PLACE OF SAFETY WHILE
THUNDERSTORMS PASS OVERHEAD.

DANGEROUS LIGHTNING...HAIL UP TO A HALF INCH IN DIAMETER...BRIEF
HEAVY RAIN...AND GUSTY WINDS UP TO 50 MPH MAY OCCUR WITH THESE STORMS.

DANKERS

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.