Alert archive / Colorado / Tornado Warnings in 2005

Tornado Warning 28, NWS Denver/Boulder, CO

July 5, 2005Logan County, Weld County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at Jul 5, 2005, 6:00 PM MDT for Logan County, Weld County, Colorado. It was in force for 45 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: Jul 5, 2005, 6:00 PM MDT (00:00 UTC)
Expired: Jul 5, 2005, 6:45 PM MDT
In force: 45 min
Issued by: NWS Denver/Boulder, CO
Area: Counties, with a storm outline in the text

Counties Logan County, CO, Weld County, CO

The radar

The Cheyenne radar (KCYS), 113 km from the middle of the area, began a volume at 00:03 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 watch it was issued in

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

Issued	Product	Office	Lasted
Jul 5, 1:10 PM MDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Denver, CO (KDNR), launched 00:00Z, 0.0 hours before the alert went out and 112 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: 3915 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: -12 m²/s²
0-3 km storm-relative helicity: 47 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 060000
TORBOU
COC075-123-060045-
/O.NEW.KBOU.TO.W.0028.050706T0000Z-050706T0045Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
600 PM MDT TUE JUL 5 2005

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN LOGAN COUNTY IN NORTHEAST COLORADO
  NORTHEASTERN WELD COUNTY IN NORTHEAST COLORADO

* UNTIL 645 PM MDT

* AT 558 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 10 MILES WEST OF
  WESTPLAINS...OR ABOUT 31 MILES NORTHWEST OF STERLING. THIS STORM
  WAS MOVING SOUTHEAST AT 15 MPH.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  WESTPLAINS...STONEHAM AND NEW RAYMER.

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 4099 10326 4100 10394 4060 10378 4068 10334

$$
BAKER

1 follow-up statement

000 
WWUS55 KBOU 060017
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
613 PM MDT TUE JUL 5 2005

COC075-123-060045-
/O.CON.KBOU.TO.W.0028.000000T0000Z-050706T0045Z/
LOGAN CO-WELD CO-
613 PM MDT TUE JUL 5 2005

...A TORNADO WARNING CONTINUES UNTIL 645 PM MDT FOR NORTHEASTERN WELD
AND NORTHWESTERN LOGAN COUNTIES...

AT 610 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUES TO 
INDICATE A POSSIBLE TORNADO WITH A SEVERE THUNDERSTORM LOCATED 8 
MILES WEST OF WESTPLAINS...OR ABOUT 27 MILES NORTHWEST OF STERLING. 
THIS STORM WAS MOVING SOUTHEAST AT 15 MPH.

LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
WESTPLAINS...STONEHAM AND NEW RAYMER.

AT 608 PM MDT...A TRAINED WEATHER SPOTTER REPORTED CONSIDERABLE 
DAMAGE TO STRUCTURES AND CROPS CAUSED BY HAIL STONES RANGING FROM 
QUARTER TO SOFTBALL SIZE. THE SPOTTER WAS LOCATED 12 MILES 
WEST-NORTHWEST OF WEST PLAINS IN RURAL NORTHEAST WELD COUNTY. 

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 4099 10326 4100 10394 4060 10378 4068 10334

$$
BAKER

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 5, 6:39 PM MDT	Tornado Warning	BOU	Logan	31 min
Jul 5, 7:03 PM MDT	Severe Thunderstorm Warning	BOU	Logan, Washington	48 min
Jul 6, 5:07 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln, Washington	23 min
Jul 6, 5:29 PM MDT	Severe Thunderstorm Warning	BOU	Lincoln, Washington	46 min

Nearby

Tornado Warnings in Colorado, 2005 Every tornado warning in 2005 Tornadoes in 2005

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.