Alert archive / Colorado / Tornado Warnings in 2004
Tornado Warning 15, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jun 9, 2004, 4:18 PM MDT for Adams County, Colorado. It was in force for 42 min. 23 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 9, 2004, 4:18 PM MDT (22:18 UTC)
- Expired
- Jun 9, 2004, 5:00 PM MDT
- In force
- 42 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Counties, with a storm outline in the text
County Adams County, CO
The radar
The Denver radar (KFTG), 28 km from the middle of the area, began a volume at 22:19 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 | Remark |
|---|---|---|---|
| Jun 9, 4:35 PM MDT | TORNADO | 10 N Byers, CO | VERY WEAK TORNADO BUT NOT A GUSTNADO. MULTIPLE VORTICES. |
| Jun 9, 4:35 PM MDT | TORNADO | 10 N Byers, CO | VERY WEAK TORNADO BUT NOT A GUSTNADO. MULTIPLE VORTICES. |
| Jun 9, 4:35 PM MDT | TORNADO | 10 N Byers, CO | VERY WEAK TORNADO BUT NOT A GUSTNADO. MULTIPLE VORTICES. |
| Jun 9, 4:35 PM MDT | TORNADO | 10 N Byers, CO | VERY WEAK TORNADO BUT NOT A GUSTNADO. MULTIPLE VORTICES. |
| Jun 9, 4:35 PM MDT | TORNADO | 10 N Byers, CO | VERY WEAK TORNADO BUT NOT A GUSTNADO. MULTIPLE VORTICES. |
| Jun 9, 4:35 PM MDT | TORNADO | 10 N Byers, CO | VERY WEAK TORNADO BUT NOT A GUSTNADO. MULTIPLE VORTICES. |
| Jun 9, 4:35 PM MDT | TORNADO | 10 N Byers, CO | VERY WEAK TORNADO BUT NOT A GUSTNADO. MULTIPLE VORTICES. |
| Jun 9, 4:35 PM MDT | TORNADO | 10 N Byers, CO | VERY WEAK TORNADO BUT NOT A GUSTNADO. MULTIPLE VORTICES. |
| Jun 9, 4:35 PM MDT | TORNADO | 10 N Byers, CO | VERY WEAK TORNADO BUT NOT A GUSTNADO. MULTIPLE VORTICES. |
| Jun 9, 4:36 PM MDT | TORNADO | 10 Ne Strasburg, CO | REPORT RELAYED BY GOODLAND WFO |
| Jun 9, 4:36 PM MDT | TORNADO | 10 Ne Strasburg, CO | REPORT RELAYED BY GOODLAND WFO |
| Jun 9, 4:36 PM MDT | TORNADO | 10 Ne Strasburg, CO | REPORT RELAYED BY GOODLAND WFO |
| Jun 9, 4:36 PM MDT | TORNADO | 10 Ne Strasburg, CO | REPORT RELAYED BY GOODLAND WFO |
| Jun 9, 4:36 PM MDT | TORNADO | 10 Ne Strasburg, CO | REPORT RELAYED BY GOODLAND WFO |
| Jun 9, 4:36 PM MDT | TORNADO | 10 Ne Strasburg, CO | REPORT RELAYED BY GOODLAND WFO |
| Jun 9, 4:36 PM MDT | TORNADO | 10 Ne Strasburg, CO | REPORT RELAYED BY GOODLAND WFO |
| Jun 9, 4:36 PM MDT | TORNADO | 10 Ne Strasburg, CO | REPORT RELAYED BY GOODLAND WFO |
| Jun 9, 4:36 PM MDT | TORNADO | 10 Ne Strasburg, CO | REPORT RELAYED BY GOODLAND WFO |
| Jun 9, 4:36 PM MDT | TORNADO | 10 Ne Strasburg, CO | REPORT RELAYED BY GOODLAND WFO |
| Jun 9, 4:36 PM MDT | TORNADO | 10 Ne Strasburg, CO | REPORT RELAYED BY GOODLAND WFO |
| Jun 9, 4:36 PM MDT | TORNADO | 10 Ne Strasburg, CO | REPORT RELAYED BY GOODLAND WFO |
| Jun 9, 4:36 PM MDT | TORNADO | 10 Ne Strasburg, CO | REPORT RELAYED BY GOODLAND WFO |
| Jun 9, 4:36 PM MDT | TORNADO | 10 Ne Strasburg, CO | REPORT RELAYED BY GOODLAND WFO |
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 9, 1:40 PM MDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 10.3 hours before the alert went out and 85 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
- 25 J/kg
- Mixed-layer CIN
- -342 J/kg
- Mixed-layer LCL
- 1625 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 105 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 092218 TORBOU COC001-092300- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DENVER CO 417 PM MDT WED JUN 9 2004 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * TORNADO WARNING FOR... EASTERN ADAMS COUNTY IN NORTHEAST COLORADO * UNTIL 500 PM MDT * AT 417 PM MDT...A WEATHER SPOTTER REPORTED A TORNADO APPROXIMATELY 5 MILES NORTH OF BENNETT...OR ABOUT 33 MILES EAST OF DENVER... MOVING NORTHEAST AT 20 MPH. LOCATIONS IN THE WARNING INCLUDE...BUT ARE NOT LIMITED TO...LEADER. DO NOT USE YOUR CAR TO TRY TO OUTRUN A TORNADO. CARS ARE EASILY TOSSED AROUND BY TORNADO WINDS. IF YOU ARE CAUGHT IN THE PATH OF A TORNADO...LEAVE THE CAR AND GO TO A STRONG BUILDING. IF NO STRUCTURE IS NEARBY...SEEK SHELTER IN A DITCH OR LOW SPOT. 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 3975 10439 3975 10407 3999 10393 3994 10435 $$ BARJENBRUCH
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 6:07 PM MDT | Flash Flood Warning | BOU | Douglas, Jefferson | 113 min |
| Jun 8, 7:58 PM MDT | Severe Thunderstorm Warning | BOU | Jefferson | 47 min |
| Jun 8, 8:40 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Denver, Jefferson | 65 min |
| Jun 8, 8:51 PM MDT | Flash Flood Warning | BOU | Adams, Denver, Jefferson | 3 hr |
| Jun 8, 9:19 PM MDT | Severe Thunderstorm Warning | BOU | Boulder, Larimer | 56 min |
| Jun 9, 1:55 PM MDT | Severe Thunderstorm Warning | BOU | Douglas, Jefferson | 50 min |
| Jun 9, 2:34 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Denver, Douglas, Jefferson | 56 min |
| Jun 9, 2:48 PM MDT | Tornado Warning | BOU | Arapahoe, Denver, Jefferson | 42 min |
| Jun 9, 2:49 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe | 56 min |
| Jun 9, 2:51 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 54 min |
| Jun 9, 3:32 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver, Jefferson | 58 min |
| Jun 9, 3:46 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe | 59 min |
| Jun 9, 4:39 PM MDT | Flash Flood Warning | BOU | Douglas | 3 hr |
| Jun 9, 4:43 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 62 min |
| Jun 9, 4:57 PM MDT | Tornado Warning | BOU | Adams | 63 min |
| Jun 9, 5:08 PM MDT | Severe Thunderstorm Warning | BOU | Douglas | 52 min |
| Jun 9, 5:46 PM MDT | Severe Thunderstorm Warning | BOU | Morgan | 59 min |
| Jun 9, 5:52 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 53 min |
| Jun 9, 5:59 PM MDT | Tornado Warning | BOU | Morgan | 46 min |
Nearby
Tornado Warnings in Colorado, 2004Every tornado warning in 2004Tornadoes 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.