Alert archive / Colorado / Tornado Warnings in 1997

Tornado Warning 37, NWS Denver/Boulder, CO

July 29, 1997Arapahoe County, Elbert County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at Jul 29, 1997, 3:50 PM MDT for Arapahoe County, Elbert County, Colorado. It was in force for 40 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 29, 1997, 3:50 PM MDT (21:50 UTC)
Expired: Jul 29, 1997, 4:30 PM MDT
In force: 40 min
Issued by: NWS Denver/Boulder, CO
Area: Whole counties

Counties Arapahoe County, CO, Elbert County, CO

The radar

The Denver radar (KFTG), 44 km from the middle of the area, began a volume at 21:49 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, 9.8 hours before the alert went out and 97 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1052 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -20 m²/s²
0-3 km storm-relative helicity: -8 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 292152
TORDEN
COC005-039-292230-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
350 PM MDT TUE JUL 29 1997

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 430 PM MDT FOR PEOPLE IN THE FOLLOWING COUNTIES

IN NORTHEAST COLORADO
     CENTRAL AND EASTERN ARAPAHOE

IN EAST CENTRAL COLORADO
     NORTH CENTRAL ELBERT

INCLUDING THE FOLLOWING LOCATIONS
     BYERS AND DEER TRAIL

AT 350 PM MDT...SKYWARN SPOTTERS REPORTED A TORNADO 6 MILES 
SOUTHEAST OF BYERS.  ANOTHER TORNADO WAS REPORTED 1 MILE SOUTH OF 
BYERS....OR ABOUT 27 MILES EAST OF DENVER. 

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.

BARJENBRUCH 

LAT...LON 3973 10394 3929 10429 3934 10447 3961 10437           3974 
10426

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 6:41 PM MDT	Flash Flood Warning	BOU	Adams	2 hr
Jul 28, 6:58 PM MDT	Flash Flood Warning	BOU	Weld	2 hr
Jul 28, 7:55 PM MDT	Tornado Warning	BOU	Elbert	35 min
Jul 28, 9:40 PM MDT	Flash Flood Warning	BOU	Larimer	2 hr
Jul 29, 4:38 PM MDT	Flash Flood Warning	BOU	Elbert	112 min
Jul 29, 5:37 PM MDT	Flash Flood Warning	BOU	Elbert	113 min

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.