Alert archive / Colorado / Tornado Warnings in 1997

Tornado Warning 10, NWS Denver/Boulder, CO

June 9, 1997Larimer County, Weld County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at Jun 9, 1997, 4:39 PM MDT for Larimer County, Weld 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 9, 1997, 4:39 PM MDT (22:39 UTC)
Expired: Jun 9, 1997, 5:15 PM MDT
In force: 36 min
Issued by: NWS Denver/Boulder, CO
Area: Whole counties; the outline is the Mesonet’s reconstruction

Counties Larimer County, CO, Weld County, CO

The radar

The Denver radar (KFTG), 80 km from the middle of the area, began a volume at 22:40 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, 10.7 hours before the alert went out and 161 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: 7 J/kg
Mixed-layer CIN: -144 J/kg
Mixed-layer LCL: 767 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: -7 m²/s²
0-3 km storm-relative helicity: 40 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.

000 
TTAA00 KDEN 092242 RRA
TORDEN
COC069-123-092315-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
439 PM MDT MON JUN 9 1997

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 515 PM MDT FOR PEOPLE IN THE FOLLOWIN0 COUNTIES

IN NORTHEAST COLORADO
     WEST CENTRAL WELD

IN NORTH CENTRAL COLORADO
     SOUTHEASTERN LARIMER

INCLUDING THE FOLLOWING LOCATIONS
     FORT COLLINS...HARMONY...JOHNSTOWN AND TIMNATH

AT 425 PM MDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
SHOWER WITH A POSSIBLE TORNADO 7 MILES SOUTH OF TIMNATH...OR ABOUT 
12 MILES SOUTHEAST OF FORT COLLINS.

AT 425 PM MDT AMATEUR RADIO WEATHER SPOTTERS REPORTED FUNNEL CLOUDS 
OVER THE WINDSOR EXIT ALONG I-25. SEVERAL OTHER FUNNEL CLOUDS HAVE 
BEEN REPORTED JUST NORTHWEST OF LOVELAND AT BOYD LAKE.

IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED
BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW
SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

LAT...LON 4031 10489 4026 10500 4059 10513 4064 10502

ENTREKIN

Nearby

Tornado Warnings in Colorado, 1997 Every tornado warning in 1997 Tornadoes 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.