Alert archive / Colorado / Tornado Warnings in 2008

Tornado Warning 28, NWS Denver/Boulder, CO

June 4, 2008Washington County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at Jun 4, 2008, 5:11 PM MDT for Washington County, Colorado. It was in force for 34 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: Jun 4, 2008, 5:11 PM MDT (23:11 UTC)
Expired: Jun 4, 2008, 5:45 PM MDT
In force: 34 min
Issued by: NWS Denver/Boulder, CO
Area: Storm-based polygon

County Washington County, CO

The radar

The Goodland radar (KGLD), 132 km from the middle of the area, began a volume at 22:58 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
Jun 4, 12:42 PM MDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 11.2 hours before the alert went out and 38 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: 266 J/kg
Mixed-layer CIN: -122 J/kg
Mixed-layer LCL: 675 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 91 m²/s²
0-3 km storm-relative helicity: 185 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

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

000 
WFUS55 KBOU 042311
TORBOU
COC121-042345-
/O.NEW.KBOU.TO.W.0028.080604T2311Z-080604T2345Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
511 PM MDT WED JUN 4 2008

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* TORNADO WARNING FOR...
  EAST CENTRAL WASHINGTON COUNTY IN NORTHEAST COLORADO

* UNTIL 545 PM MDT

* AT 511 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES
  SOUTHEAST OF OTIS...OR 19 MILES EAST OF AKRON. THIS STORM WAS
  MOVING EAST AT 37 MPH.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO OTIS.

AT 510 PM A TRAINED SPOTTER REPORTED LARGE HAIL IN OTIS.

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 4001 10290 4012 10306 4027 10299 4027 10280
      3998 10280
TIME...MOT...LOC 2311Z 273DEG 32KT 4011 10281

$$
GIMMESTAD

2 follow-up statements

000 
WWUS55 KBOU 042326
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
526 PM MDT WED JUN 4 2008

COC121-042345-
/O.CON.KBOU.TO.W.0028.000000T0000Z-080604T2345Z/
WASHINGTON CO-
525 PM MDT WED JUN 4 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM MDT FOR EAST
CENTRAL WASHINGTON COUNTY...

AT 525 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
STORM WAS LOCATED 2 MILES NORTHEAST OF HYDE...OR 22 MILES EAST OF 
AKRON. THIS STORM WAS MOVING EAST AT 27 MPH. ANOTHER STORM WAS 
DEVELOPING OVER PLATNER MOVING EAST.

LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
OTIS.

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 AND DESTRUCTIVE STRAIGHT LINE WINDS.

LAT...LON 4001 10290 4012 10306 4027 10299 4027 10280
      3998 10280
TIME...MOT...LOC 2325Z 262DEG 23KT 4016 10274

$$
GIMMESTAD

000 
WWUS55 KBOU 042337
SVSBOU

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
537 PM MDT WED JUN 4 2008

COC121-042345-
/O.CON.KBOU.TO.W.0028.000000T0000Z-080604T2345Z/
WASHINGTON CO-
537 PM MDT WED JUN 4 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM MDT FOR EAST
CENTRAL WASHINGTON COUNTY...

AT 537 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
STORM WAS LOCATED NEAR HYDE...OR 22 MILES EAST OF AKRON. THIS STORM 
WAS MOVING EAST AT 15 MPH. ANOTHER SEVERE THUNDERSTORM WAS 4 MILES 
SOUTHWEST OF OTIS MOVING EAST.

LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
OTIS.

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 AND DESTRUCTIVE STRAIGHT LINE WINDS.

LAT...LON 4001 10280 4001 10290 4012 10306 4015 10304
      4016 10304 4017 10303 4025 10300 4023 10280
TIME...MOT...LOC 2337Z 276DEG 13KT 4014 10279

$$
GIMMESTAD

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 4, 2:11 PM MDT	Tornado Warning	BOU	Washington	35 min
Jun 4, 2:38 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Morgan, Weld	37 min
Jun 4, 2:48 PM MDT	Tornado Warning	BOU	Adams, Morgan, Weld	42 min
Jun 4, 2:58 PM MDT	Severe Thunderstorm Warning	BOU	Adams, Boulder, Broomfield, Jefferson, Weld	47 min
Jun 4, 3:26 PM MDT	Tornado Warning	BOU	Adams, Morgan, Washington	35 min
Jun 4, 3:59 PM MDT	Tornado Warning	BOU	Morgan, Washington	46 min
Jun 4, 4:36 PM MDT	Tornado Warning	BOU	Washington	39 min
Jun 4, 5:17 PM MDT	Flash Flood Warning	BOU	Morgan, Washington	2 hr
Jun 4, 5:46 PM MDT	Tornado Warning	BOU	Washington	29 min

Nearby

Tornado Warnings in Colorado, 2008 Every tornado warning in 2008 Tornadoes in 2008

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.