Alert archive / Colorado / Tornado Warnings in 2009

Tornado Warning 79, NWS Denver/Boulder, CO

August 17, 2009Lincoln County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at Aug 17, 2009, 7:28 PM MDT for Lincoln County, Colorado. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 17, 2009, 7:28 PM MDT (01:28 UTC)
Expired
Aug 17, 2009, 8:00 PM MDT
In force
32 min
Issued by
NWS Denver/Boulder, CO
Area
Storm-based polygon

County Lincoln County, CO

The radar

The Pueblo radar (KPUX), 75 km from the middle of the area, began a volume at 01:28 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 00:00Z, 1.5 hours before the alert went out and 113 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-pSkew-T log-p diagram, Denver, CO at 00:00Z on 2009-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 395 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 00:00Z on 2009-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 3 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
395 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
1610 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
3 m²/s²
0-3 km storm-relative helicity
82 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

000 
WFUS55 KBOU 180128
TORBOU
COC073-180200-
/O.NEW.KBOU.TO.W.0079.090818T0128Z-090818T0200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
728 PM MDT MON AUG 17 2009

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

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

* UNTIL 800 PM MDT

* AT 729 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 2 MILES
  NORTHEAST OF PUNKIN CENTER...OR 27 MILES SOUTH OF LIMON. THIS STORM
  WAS MOVING SOUTHEAST AT 15 MPH.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PUNKIN
  CENTER AND KARVAL.

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.

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING LARGE
DAMAGING HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.

&&

LAT...LON 3896 10333 3871 10343 3876 10377 3900 10365
TIME...MOT...LOC 0129Z 288DEG 12KT 3888 10367

$$
1 follow-up statement
000 
WWUS55 KBOU 180138
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
738 PM MDT MON AUG 17 2009

COC073-180200-
/O.CON.KBOU.TO.W.0079.000000T0000Z-090818T0200Z/
LINCOLN CO-
738 PM MDT MON AUG 17 2009

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM MDT FOR SOUTHERN
LINCOLN COUNTY...

AT 738 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS STORM WAS
LOCATED 4 MILES EAST OF PUNKIN CENTER...OR 29 MILES SOUTH OF LIMON.
THIS STORM WAS MOVING SOUTHEAST AT 15 MPH.

LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
PUNKIN CENTER AND KARVAL.

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

IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING LARGE
DAMAGING HAIL UP TO BASEBALLS AND DESTRUCTIVE STRAIGHT LINE WINDS IN 
EXCESS OF 70 MPH.

&&

LAT...LON 3896 10333 3871 10343 3876 10377 3900 10365
TIME...MOT...LOC 0138Z 288DEG 12KT 3885 10363

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 17, 6:03 PM MDTSevere Thunderstorm WarningBOUArapahoe27 min
Aug 17, 6:07 PM MDTSevere Thunderstorm WarningBOUElbert38 min
Aug 17, 6:23 PM MDTTornado WarningBOUElbert37 min
Aug 17, 6:27 PM MDTSevere Thunderstorm WarningBOUAdams, Arapahoe48 min
Aug 17, 6:32 PM MDTSevere Thunderstorm WarningBOUMorgan, Washington43 min
Aug 17, 6:46 PM MDTSevere Thunderstorm WarningBOUArapahoe29 min
Aug 17, 6:59 PM MDTTornado WarningBOUElbert, Lincoln31 min
Aug 17, 7:14 PM MDTSevere Thunderstorm WarningBOULogan, Washington46 min
Aug 17, 7:45 PM MDTSevere Thunderstorm WarningBOUArapahoe, Elbert45 min
Aug 17, 7:55 PM MDTSevere Thunderstorm WarningBOULogan, Washington27 min
Aug 17, 7:59 PM MDTTornado WarningBOULincoln46 min
Aug 17, 8:15 PM MDTFlash Flood WarningBOULincoln3 hr
Aug 17, 8:44 PM MDTTornado WarningBOULincoln31 min
Aug 17, 9:15 PM MDTSevere Thunderstorm WarningBOULincoln29 min
Aug 17, 9:27 PM MDTSevere Thunderstorm WarningBOUDouglas48 min
Aug 17, 10:00 PM MDTSevere Thunderstorm WarningBOUDouglas30 min
Aug 17, 10:21 PM MDTSevere Thunderstorm WarningBOUElbert29 min
Aug 18, 2:07 AM MDTSevere Thunderstorm WarningBOULincoln53 min
Aug 18, 12:39 PM MDTSevere Thunderstorm WarningBOUDenver, Jefferson36 min
Aug 18, 1:10 PM MDTSevere Thunderstorm WarningBOUArapahoe, Denver, Douglas, Jefferson22 min
Aug 18, 1:16 PM MDTTornado WarningBOUPark24 min
Aug 18, 3:31 PM MDTSpecial Weather StatementBOUElbert44 min
Aug 18, 4:22 PM MDTSpecial Weather StatementBOULincoln53 min

Nearby

Tornado Warnings in Colorado, 2009Every tornado warning in 2009Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.