Alert archive / Colorado / Tornado Warnings in 2009

Tornado Warning 69, NWS Denver/Boulder, CO

July 27, 2009Elbert County, Lincoln County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at Jul 27, 2009, 5:23 PM MDT for Elbert County, Lincoln County, Colorado. It was in force for 37 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 27, 2009, 5:23 PM MDT (23:23 UTC)
Expired: Jul 27, 2009, 6:00 PM MDT
In force: 37 min
Issued by: NWS Denver/Boulder, CO
Area: Storm-based polygon

Counties Elbert County, CO, Lincoln County, CO

The radar

The Denver radar (KFTG), 100 km from the middle of the area, began a volume at 23:24 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
Jul 27, 5:25 PM MDT	TSTM WND GST 61	Cedar Point, CO
Jul 27, 5:34 PM MDT	TSTM WND GST 60	1 Ne Limon, CO

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 11.4 hours before the alert went out and 72 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: 2060 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 51 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 272323
TORBOU
COC039-073-280000-
/O.NEW.KBOU.TO.W.0069.090727T2323Z-090728T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
523 PM MDT MON JUL 27 2009

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

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

* UNTIL 600 PM MDT

* AT 522 PM MDT...THE PUBLIC REPORTED A TORNADO APPROXIMATELY 7
  MILES NORTH OF LIMON. THIS STORM WAS MOVING SOUTHEAST AT 15 MPH.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LIMON 
AND   GENOA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 SAFE SHELTER IS AVAILABLE...LIE FLAT IN
THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR
HANDS.

&&

LAT...LON 3917 10338 3919 10372 3940 10390 3947 10353
TIME...MOT...LOC 2322Z 307DEG 14KT 3936 10371

$$
BARJENBRUCH

1 follow-up statement

000 
WWUS55 KBOU 272357
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
557 PM MDT MON JUL 27 2009

COC039-073-280006-
/O.EXP.KBOU.TO.W.0069.000000T0000Z-090728T0000Z/
LINCOLN CO-ELBERT CO-
557 PM MDT MON JUL 27 2009

...THE TORNADO WARNING FOR EAST CENTRAL ELBERT AND NORTH CENTRAL
LINCOLN COUNTIES WILL EXPIRE AT 600 PM MDT...

NO FURTHER REPORTS OF TORNADOES HAVE BEEN RECEIVED...AND ROTATION WITHIN
THIS STORM HAS WEAKENED.  HOWEVER...THE STORM WILL CONTINUE TO PRODUCE 
50 TO 60 MPH STRAIGHT LINE WINDS AS IT MOVES SOUTHWARD THROUGH LINCOLN
COUNTY.

LAT...LON 3917 10338 3919 10372 3940 10390 3947 10353
TIME...MOT...LOC 2356Z 307DEG 14KT 3928 10357

$$
BARJENBRUCH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 27, 1:15 PM MDT	Special Weather Statement	BOU	Weld	30 min
Jul 27, 2:28 PM MDT	Severe Thunderstorm Warning	BOU	Weld	62 min
Jul 27, 3:28 PM MDT	Severe Thunderstorm Warning	BOU	Weld	49 min
Jul 27, 4:08 PM MDT	Severe Thunderstorm Warning	BOU	Arapahoe, Denver	45 min
Jul 27, 4:15 PM MDT	Severe Thunderstorm Warning	BOU	Douglas, Elbert	39 min
Jul 27, 5:06 PM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	54 min
Jul 27, 5:49 PM MDT	Severe Thunderstorm Warning	BOU	Elbert, Lincoln	40 min

Nearby

Tornado Warnings in Colorado, 2009 Every tornado warning in 2009 Tornadoes in 2009

Sources

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