Alert archive / Colorado / Tornado Warnings in 2008
Tornado Warning 50, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Aug 6, 2008, 6:59 PM MDT for Boulder County, Larimer County, Weld County, Colorado. It was in force for 31 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
- Aug 6, 2008, 6:59 PM MDT (00:59 UTC)
- Expired
- Aug 6, 2008, 7:30 PM MDT
- In force
- 31 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
Counties Boulder County, CO, Larimer County, CO, Weld County, CO
The radar
The Denver radar (KFTG), 66 km from the middle of the area, began a volume at 01:00 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 nearest sounding before it
Grand Junction, CO (KGJT), launched 00:00Z, 1.0 hours before the alert went out and 332 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.
- Mixed-layer CAPE
- 68 J/kg
- Mixed-layer CIN
- -103 J/kg
- Mixed-layer LCL
- 1760 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 47 m²/s²
- 0-3 km storm-relative helicity
- 83 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WFUS55 KBOU 070059
TORBOU
COC013-069-123-070130-
/O.NEW.KBOU.TO.W.0050.080807T0059Z-080807T0130Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
659 PM MDT WED AUG 6 2008
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHEASTERN LARIMER COUNTY IN NORTH CENTRAL COLORADO
NORTHEASTERN BOULDER COUNTY IN NORTHEAST COLORADO
WEST CENTRAL WELD COUNTY IN NORTHEAST COLORADO
* UNTIL 730 PM MDT
* AT 652 PM MDT...LAW ENFORCEMENT AND TRAINED WEATHER SPOTTERS HAVE
REPORTED SEVERAL FUNNEL CLOUDS AND BRIEF WEAK TORNADOES FROM A
LINE OF THUNDERSTORMS 5 MILES SOUTH OF GILCREST TO 8 MILES
SOUTHEAST OF WINDSOR...OR 6 MILES WEST OF GREELEY. THESE STORMS
WERE MOVING NORTH AT 6 MPH.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WINDSOR...
TIMNATH...SEVERANCE...NIWOT...MILTON RESERVOIR...MILLIKEN...MEAD...
LUCERNE...LOVELAND...LA SALLE...JOHNSTOWN...GILCREST...EVANS...
EATON...BERTHOUD...AULT...LONGMONT...GREELEY...FORT COLLINS AND
NORTHEASTERN BOULDER.
WEATHER SERVICE DOPPLER RADAR CONTINUES TO INDICATE WEAK
CIRCULATIONS OFTEN REFERRED TO AS GUSTNADOES ALONG A STRONG
THUNDERSTORM OUTFLOW BOUNDARY MOVING THROUGH SOUTHWEST 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.
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.
LAT...LON 4028 10493 4006 10506 4005 10519 4026 10522
4061 10511 4060 10471 4041 10461 4019 10462
TIME...MOT...LOC 0052Z 180DEG 5KT 4042 10488
$$
BAKER1 follow-up statement
000
WWUS55 KBOU 070136
SVSBOU
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
736 PM MDT WED AUG 6 2008
COC013-069-123-070146-
/O.EXP.KBOU.TO.W.0050.000000T0000Z-080807T0130Z/
LARIMER CO-BOULDER CO-WELD CO-
736 PM MDT WED AUG 6 2008
...THE TORNADO WARNING FOR WEST CENTRAL WELD...NORTHEASTERN BOULDER
AND SOUTHEASTERN LARIMER COUNTIES HAS EXPIRED...
THE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED AND IS NO
LONGER EXPECTED TO PRODUCE SEVERE WEATHER.
LAT...LON 4028 10493 4006 10506 4005 10519 4026 10522
4061 10511 4060 10471 4041 10461 4019 10462
TIME...MOT...LOC 0059Z 180DEG 5KT 4043 10488
$$The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 6, 6:00 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Elbert | 45 min |
| Aug 6, 6:18 PM MDT | Areal Flood Advisory | BOU | Weld | 87 min |
| Aug 6, 6:22 PM MDT | Areal Flood Advisory | BOU | Douglas, Elbert | 83 min |
| Aug 6, 6:26 PM MDT | Areal Flood Advisory | BOU | Arapahoe, Elbert | 94 min |
| Aug 6, 6:30 PM MDT | Tornado Warning | BOU | Douglas, Elbert | 30 min |
| Aug 6, 6:39 PM MDT | Tornado Warning | BOU | Adams, Broomfield, Denver, Weld | 36 min |
| Aug 6, 6:47 PM MDT | Areal Flood Advisory | BOU | Broomfield, Weld | 88 min |
| Aug 6, 7:20 PM MDT | Areal Flood Advisory | BOU | Adams, Arapahoe, Boulder, Broomfield, Denver, Jefferson and 1 more | 85 min |
| Aug 6, 7:32 PM MDT | Flash Flood Warning | BOU | Weld | 3 hr |
| Aug 6, 7:36 PM MDT | Areal Flood Advisory | BOU | Adams, Arapahoe, Denver, Elbert, Lincoln, Morgan and 2 more | 3 hr |
| Aug 6, 8:56 PM MDT | Areal Flood Advisory | BOU | Morgan, Washington | 109 min |
| Aug 6, 9:50 PM MDT | Flash Flood Warning | BOU | Morgan, Washington | 85 min |
| Aug 6, 10:30 PM MDT | Areal Flood Advisory | BOU | Washington | 90 min |
| Aug 6, 10:48 PM MDT | Areal Flood Advisory | BOU | Weld | 87 min |
| Aug 7, 11:37 AM MDT | Flash Flood Watch | BOU | Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 7 more | 8 hr |
Nearby
Tornado Warnings in Colorado, 2008Every tornado warning in 2008Tornadoes 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.