Alert archive / Colorado / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 87, NWS Denver/Boulder, CO

June 24, 1997Lincoln County, Colorado

NWS Denver/Boulder, CO issued this severe thunderstorm warning at Jun 24, 1997, 5:54 PM MDT for Lincoln County, Colorado. It was in force for 36 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: Jun 24, 1997, 5:54 PM MDT (23:54 UTC)
Expired: Jun 24, 1997, 6:30 PM MDT
In force: 36 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), 115 km from the middle of the area, began a volume at 23:57 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 24, 4:15 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 11.9 hours before the alert went out and 47 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 210 J/kg
Mixed-layer CIN: -271 J/kg
Mixed-layer LCL: 2200 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: -27 m²/s²
0-3 km storm-relative helicity: -34 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

586 
WUUS1 KDEN 242356 RRA
SVRDEN
COC073-250030-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DENVER CO
554 PM MDT TUE JUN 24 1997

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A SEVERE
THUNDERSTORM WARNING EFFECTIVE UNTIL 630 PM MDT FOR PEOPLE IN THE
FOLLOWING COUNTIES...

IN EAST CENTRAL COLORADO
     NORTHEASTERN LINCOLN

INCLUDING THE FOLLOWING LOCATIONS
     ARRIBA

AT 551 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM 15 MILES NORTH OF ARRIBA...OR ABOUT 27 MILES
NORTHEAST OF LIMON.

THE STORM WAS MOVING SOUTH AT 20 MILES PER HOUR.

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.  HAIL HALF AN INCH IN DIAMETER HAS BEEN 
REPORTED WITH THIS STORM.

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

LAT...LON 3957 10337 3956 10317 3926 10316 3927 10332

GIMMESTAD

The office that day

Everything else NWS Denver/Boulder, CO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 23, 6:59 PM MDT	Tornado Warning	BOU	Adams, Arapahoe	31 min
Jun 23, 8:14 PM MDT	Severe Thunderstorm Warning	BOU	Weld	46 min
Jun 23, 9:00 PM MDT	Severe Thunderstorm Warning	BOU	Weld	45 min
Jun 24, 3:11 PM MDT	Severe Thunderstorm Warning	BOU	Douglas, Elbert	49 min
Jun 24, 3:58 PM MDT	Severe Thunderstorm Warning	BOU	Elbert	47 min
Jun 24, 4:40 PM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	50 min
Jun 24, 4:43 PM MDT	Severe Thunderstorm Warning	BOU	Morgan, Weld	32 min
Jun 24, 5:11 PM MDT	Severe Thunderstorm Warning	BOU	Weld	49 min
Jun 24, 5:15 PM MDT	Severe Thunderstorm Warning	BOU	Morgan	30 min
Jun 24, 5:26 PM MDT	Severe Thunderstorm Warning	BOU	Washington	49 min
Jun 24, 5:36 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	39 min
Jun 24, 5:50 PM MDT	Severe Thunderstorm Warning	BOU	Morgan, Weld	40 min

Nearby

Severe Thunderstorm Warnings in Colorado, 1997 Every 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.