Alert archive / Colorado / Tornado Warnings in 2001

Tornado Warning 20, NWS Denver/Boulder, CO

June 9, 2001Lincoln County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at Jun 9, 2001, 2:31 PM MDT for Lincoln County, Colorado. It was in force for 44 min. 1 report came from 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, with what was reported inside it.

The facts

Issued: Jun 9, 2001, 2:31 PM MDT (20:31 UTC)
Expired: Jun 9, 2001, 3:15 PM MDT
In force: 44 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), 93 km from the middle of the area, began a volume at 20:34 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.

What was reported inside it

Time	Report	Where	Remark
Jun 9, 2:32 PM MDT	Tornado F0	Genoa, CO	A large tornado, approximately 1/2 mile wide, touched down briefly. The tornado took out about 200 yards of fencing and windbreaks. One windmill was destroyed and a corn crop was damaged.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 8.5 hours before the alert went out and 57 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: 47 J/kg
Mixed-layer CIN: -424 J/kg
Mixed-layer LCL: 2745 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 72 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 
WFUS55 KBOU 092033
TORDEN

COC073-092115-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
231 PM MDT SAT JUN 9 2001

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* TORNADO WARNING FOR...
  NORTH CENTRAL LINCOLN COUNTY IN EAST CENTRAL COLORADO

* UNTIL 315 PM MDT

* AT 231 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM WITH A POSSIBLE TORNADO OVER NORTH CENTRAL LINCOLN
  COUNTY...OR ABOUT 13 MILES NORTHEAST OF LIMON...MOVING SOUTH AT 15
  MPH.

THIS WARNING REPLACES THE EARLIER TORNADO WARNING.

SEVERAL TORNADOES HAVE BEEN REPORTED WITH THIS DANGEROUS STORM...THE 
LATEST SIGHTING ABOUT 6 MILES NORTH OF GENOA. 

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.


LAT...LON 3951 10365 3930 10367 3930 10343 3951 10343

SWE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 8, 8:27 PM MDT	Severe Thunderstorm Warning	BOU	Douglas, Jefferson	33 min
Jun 9, 2:14 PM MDT	Tornado Warning	BOU	Lincoln	46 min
Jun 9, 3:17 PM MDT	Tornado Warning	BOU	Lincoln	43 min
Jun 9, 4:01 PM MDT	Tornado Warning	BOU	Elbert, Lincoln	39 min
Jun 9, 4:39 PM MDT	Tornado Warning	BOU	Elbert, Lincoln	36 min

Nearby

Tornado Warnings in Colorado, 2001 Every tornado warning in 2001 Tornadoes in 2001

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.