Alert archive / Colorado / Tornado Warnings in 2004

Tornado Warning 40, NWS Denver/Boulder, CO

August 9, 2004Elbert County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at Aug 9, 2004, 5:24 PM MDT for Elbert County, Colorado. It was in force for 51 min. 57 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
Aug 9, 2004, 5:24 PM MDT (23:24 UTC)
Expired
Aug 9, 2004, 6:15 PM MDT
In force
51 min
Issued by
NWS Denver/Boulder, CO
Area
Counties, with a storm outline in the text

County Elbert County, CO

The radar

The Denver radar (KFTG), 62 km from the middle of the area, began a volume at 23:26 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

TimeReportWhereRemark
Aug 9, 5:49 PM MDTHAIL 1.54 W Agate, CO
Aug 9, 5:49 PM MDTHAIL 1.54 W Agate, CO
Aug 9, 5:49 PM MDTHAIL 1.54 W Agate, CO
Aug 9, 5:49 PM MDTHAIL 1.54 W Agate, CO
Aug 9, 5:49 PM MDTHAIL 1.54 W Agate, CO
Aug 9, 5:49 PM MDTHAIL 1.54 W Agate, CO
Aug 9, 5:49 PM MDTHAIL 1.54 W Agate, CO
Aug 9, 5:49 PM MDTHAIL 1.54 W Agate, CO
Aug 9, 5:49 PM MDTHAIL 1.54 W Agate, CO
Aug 9, 5:49 PM MDTHAIL 1.54 W Agate, CO
Aug 9, 5:49 PM MDTHAIL 1.54 W Agate, CO
Aug 9, 5:49 PM MDTHAIL 1.54 W Agate, CO
Aug 9, 5:49 PM MDTHAIL 1.54 W Agate, CO
Aug 9, 5:49 PM MDTHAIL 1.54 W Agate, CO
Aug 9, 5:49 PM MDTHAIL 1.54 W Agate, CO
Aug 9, 5:49 PM MDTTORNADO4 W Agate, COTORNADO ON GROUND
Aug 9, 5:49 PM MDTTORNADO4 W Agate, COTORNADO ON GROUND
Aug 9, 5:49 PM MDTTORNADO4 W Agate, COTORNADO ON GROUND
Aug 9, 5:49 PM MDTTORNADO4 W Agate, COTORNADO ON GROUND
Aug 9, 5:49 PM MDTTORNADO4 W Agate, COTORNADO ON GROUND
Aug 9, 5:49 PM MDTTORNADO4 W Agate, COTORNADO ON GROUND
Aug 9, 5:49 PM MDTTORNADO4 W Agate, COTORNADO ON GROUND
Aug 9, 5:49 PM MDTTORNADO4 W Agate, COTORNADO ON GROUND
Aug 9, 5:49 PM MDTTORNADO4 W Agate, COTORNADO ON GROUND
Aug 9, 5:49 PM MDTTORNADO4 W Agate, COTORNADO ON GROUND
Aug 9, 5:49 PM MDTTORNADO4 W Agate, COTORNADO ON GROUND
Aug 9, 5:49 PM MDTTORNADO4 W Agate, COTORNADO ON GROUND
Aug 9, 5:49 PM MDTTORNADO4 W Agate, COTORNADO ON GROUND
Aug 9, 5:49 PM MDTTORNADO4 W Agate, COTORNADO ON GROUND
Aug 9, 5:49 PM MDTTORNADO4 W Agate, COTORNADO ON GROUND
Aug 9, 5:49 PM MDTTORNADO4 W Agate, COTORNADO ON GROUND
Aug 9, 6:15 PM MDTHAIL 2.755 W Agate, CO
Aug 9, 6:15 PM MDTHAIL 2.755 W Agate, CO
Aug 9, 6:15 PM MDTHAIL 2.755 W Agate, CO
Aug 9, 6:15 PM MDTHAIL 2.755 W Agate, CO
Aug 9, 6:15 PM MDTHAIL 2.755 W Agate, CO
Aug 9, 6:15 PM MDTHAIL 2.755 W Agate, CO
Aug 9, 6:15 PM MDTHAIL 2.755 W Agate, CO
Aug 9, 6:15 PM MDTHAIL 2.755 W Agate, CO
Aug 9, 6:15 PM MDTHAIL 2.755 W Agate, CO
Aug 9, 6:15 PM MDTHAIL 2.755 W Agate, CO
Aug 9, 6:15 PM MDTHAIL 2.755 W Agate, CO
Aug 9, 6:15 PM MDTHAIL 2.755 W Agate, CO
Aug 9, 6:15 PM MDTHAIL 2.755 W Agate, CO
Aug 9, 6:16 PM MDTHAIL 4.255 W Agate, CO
Aug 9, 6:16 PM MDTHAIL 4.255 W Agate, CO
Aug 9, 6:16 PM MDTHAIL 4.255 W Agate, CO
Aug 9, 6:16 PM MDTHAIL 4.255 W Agate, CO
Aug 9, 6:16 PM MDTHAIL 4.255 W Agate, CO
Aug 9, 6:16 PM MDTHAIL 4.255 W Agate, CO
Aug 9, 6:16 PM MDTHAIL 4.255 W Agate, CO
Aug 9, 6:16 PM MDTHAIL 4.255 W Agate, CO
Aug 9, 6:16 PM MDTHAIL 4.255 W Agate, CO
Aug 9, 6:16 PM MDTHAIL 4.255 W Agate, CO
Aug 9, 6:16 PM MDTHAIL 4.255 W Agate, CO
Aug 9, 6:16 PM MDTHAIL 4.255 W Agate, CO
Aug 9, 6:16 PM MDTHAIL 4.255 W Agate, CO

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Aug 9, 12:30 PM MDTTornado WatchSPC7 hr

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 11.4 hours before the alert went out and 74 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 12:00Z on 2004-08-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 218 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Denver, CO at 12:00Z on 2004-08-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.193958Sfc1 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
218 J/kg
Mixed-layer CIN
-241 J/kg
Mixed-layer LCL
1193 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
75 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 092324
TORBOU
COC039-100015-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
524 PM MDT MON AUG 9 2004

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN ELBERT COUNTY IN EAST CENTRAL COLORADO

* UNTIL 615 PM MDT

* AT 524 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  THUNDERSTORM WITH A POSSIBLE TORNADO NEAR AGATE...OR ABOUT 21 MILES
  NORTHWEST OF LIMON...MOVING EAST AT 15 MPH.

LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...AGATE.

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 3956 10406 3939 10408 3936 10375 3956 10376

$$
RTG

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 8, 9:33 PM MDTSevere Thunderstorm WarningBOUWeld57 min
Aug 9, 3:38 PM MDTSevere Thunderstorm WarningBOULincoln52 min
Aug 9, 5:18 PM MDTSevere Thunderstorm WarningBOUElbert57 min
Aug 9, 5:54 PM MDTSevere Thunderstorm WarningBOUWashington66 min

Nearby

Tornado Warnings in Colorado, 2004Every tornado warning in 2004Tornadoes in 2004

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.