Alert archive / Colorado / Tornado Warnings in 2004

Tornado Warning 13, NWS Denver/Boulder, CO

June 4, 2004Logan County, Washington County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at Jun 4, 2004, 5:34 PM MDT for Logan County, Washington County, Colorado. It was in force for 56 min. 5 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: Jun 4, 2004, 5:34 PM MDT (23:34 UTC)
Expired: Jun 4, 2004, 6:30 PM MDT
In force: 56 min
Issued by: NWS Denver/Boulder, CO
Area: Counties, with a storm outline in the text

Counties Logan County, CO, Washington County, CO

The radar

The Denver radar (KFTG), 126 km from the middle of the area, began a volume at 23:37 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
Jun 4, 6:00 PM MDT	TSTM WND GST 60	6 Nnw Otis, CO
Jun 4, 6:00 PM MDT	TSTM WND GST 60	6 Nnw Otis, CO
Jun 4, 6:00 PM MDT	TSTM WND GST 60	6 Nnw Otis, CO
Jun 4, 6:00 PM MDT	TSTM WND GST 60	6 Nnw Otis, CO
Jun 4, 6:00 PM MDT	TSTM WND GST 60	6 Nnw Otis, 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.

Issued	Product	Office	Lasted
Jun 4, 2:10 PM MDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 11.6 hours before the alert went out and 26 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: 2903 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 107 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.

292 
WFUS55 KBOU 042334
TORBOU
COC075-121-050030-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
530 PM MDT FRI JUN 4 2004

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL LOGAN COUNTY IN NORTHEAST COLORADO
  THIS INCLUDES THE CITY OF STERLING
  EASTERN WASHINGTON COUNTY IN NORTHEAST COLORADO
  THIS INCLUDES THE CITY OF AKRON

* UNTIL 630 PM MDT

* AT 525 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
LINE OF RAPIDLY DEVELOPING THUNDERSTORMS WITH POSSIBLE ROTATION 
EXTENDING NORTH TO SOUTH ALONG A NEARLY STATIONARY WIND CONVERGENCE 
BOUNDARY.       

* SINCE 515 PM MDT THE PUBLIC HAS REPORTED SEVERAL FUNNEL CLOUDS WITH 
THUNDERSTORMS IN SOUTHWEST LOGAN COUNTY AROUND MERINO AND IN NORTHERN 
WASHINGTON COUNTY EAST OF AKRON. A TRAINED WEATHER SPOTTER OBSERVED A 
WEAK LANDSPOUT TORNADO FOR 5 MINUTES 12 MILES SOUTHWEST OF OTIS IN 
NORTHERN WASHINGTON COUNTY.  

THIS LINE OF THUNDERSTORMS WAS MOVING EAST AT 12 MPH.

LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...
STERLING...AKRON...ANTON...ARICKAREE SCHOOL...ATWOOD...BURDETT...
ELBA...ILIFF...MERINO...MIDWAY...OTIS...PADRONI...PLATNER AND PREWITT
RESERVOIR.

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.

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.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN DENVER.

LAT...LON 4001 10334 3962 10332 3961 10293 3987 10282
          4081 10279 4069 10331

$$
BAKER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 3, 6:26 PM MDT	Severe Thunderstorm Warning	BOU	Washington	34 min
Jun 4, 3:00 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln	25 min
Jun 4, 3:53 PM MDT	Tornado Warning	BOU	Weld	37 min
Jun 4, 4:35 PM MDT	Tornado Warning	BOU	Washington	55 min
Jun 4, 5:56 PM MDT	Severe Thunderstorm Warning	BOU	Logan, Phillips, Sedgwick	64 min

Nearby

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