Alert archive / Colorado / Tornado Warnings in 2008

Tornado Warning 24, NWS Denver/Boulder, CO

June 4, 2008Adams County, Morgan County, Weld County, Colorado

NWS Denver/Boulder, CO issued this tornado warning at Jun 4, 2008, 2:48 PM MDT for Adams County, Morgan County, Weld County, Colorado. It was in force for 42 min. 4 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, 2008, 2:48 PM MDT (20:48 UTC)
Expired: Jun 4, 2008, 3:30 PM MDT
In force: 42 min
Issued by: NWS Denver/Boulder, CO
Area: Storm-based polygon

Counties Adams County, CO, Morgan County, CO, Weld County, CO

The radar

The Denver radar (KFTG), 45 km from the middle of the area, began a volume at 20:51 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, 2:50 PM MDT	HAIL 1	12 N Strasburg, CO
Jun 4, 2:58 PM MDT	HAIL 1.5	13 N Strasburg, CO
Jun 4, 3:04 PM MDT	TORNADO	2 S Hoyt, CO
Jun 4, 3:05 PM MDT	HAIL 1.75	2 W Hoyt, 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, 12:42 PM MDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 8.8 hours before the alert went out and 81 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 042048
TORBOU
COC001-087-123-042130-
/O.NEW.KBOU.TO.W.0024.080604T2048Z-080604T2130Z/

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

THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHWESTERN MORGAN COUNTY IN NORTHEAST COLORADO
  NORTH CENTRAL ADAMS COUNTY IN NORTHEAST COLORADO
  SOUTH CENTRAL WELD COUNTY IN NORTHEAST COLORADO

* UNTIL 330 PM MDT

* AT 247 PM MDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD 14
  MILES WEST OF LEADER...OR 35 MILES SOUTHWEST OF FORT MORGAN. THE
  FUNNEL CLOUD WAS NEAR 72ND AVENUE AND STRASBURG ROAD. THIS
  STORM WAS MOVING NORTHEAST AT 21 MPH.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LEADER...
  HOYT AND ADENA.

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.

THIS WARNING REPLACES THE EARLIER SEVERE THUNDERSTORM WARNING.

LAT...LON 4017 10426 4026 10396 4000 10382 3982 10423
      3989 10438
TIME...MOT...LOC 2047Z 215DEG 18KT 3996 10430

$$
GIMMESTAD

1 follow-up statement

000 
WWUS55 KBOU 042114
SVSBOU

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

COC001-087-123-042130-
/O.CON.KBOU.TO.W.0024.000000T0000Z-080604T2130Z/
MORGAN CO-ADAMS CO-WELD CO-
313 PM MDT WED JUN 4 2008

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM MDT FOR SOUTH
CENTRAL WELD...NORTH CENTRAL ADAMS AND SOUTHWESTERN MORGAN
COUNTIES...

AT 313 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS
STORM WAS LOCATED 3 MILES SOUTH OF HOYT...OR 25 MILES SOUTHWEST OF
FORT MORGAN. THIS STORM WAS MOVING NORTHEAST AT 21 MPH.

LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
HOYT AND ADENA.

SPOTTERS HAVE REPORTED FUNNEL CLOUDS AND A POSSIBLE TORNADO WITH 
THIS STORM SOUTH OF HOYT IN ADAMS COUNTY. HAIL UP TO GOLF BALL SIZE 
HAS ALSO BEEN REPORTED NEAR HOYT.

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 4000 10382 3988 10410 4003 10423 4021 10415
      4020 10414 4023 10410 4022 10408 4024 10405
      4026 10396
TIME...MOT...LOC 2113Z 215DEG 18KT 4000 10406

$$
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, 2:58 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, 5:11 PM MDT	Tornado Warning	BOU	Washington	34 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.