Alert archive / Colorado / Tornado Warnings in 2008
Tornado Warning 35, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jun 20, 2008, 6:03 PM MDT for Adams County, Colorado. It was in force for 42 min. 1 report 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 20, 2008, 6:03 PM MDT (00:03 UTC)
- Expired
- Jun 20, 2008, 6:45 PM MDT
- In force
- 42 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
County Adams County, CO
The radar
The Denver radar (KFTG), 58 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 20, 6:30 PM MDT | TORNADO | 20 Ene Strasburg, 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 19, 6:22 PM MDT | Severe Thunderstorm Watch | SPC | 27 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 0.1 hours before the alert went out and 55 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
- 515 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 2747 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.6
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS55 KBOU 210003 TORBOU COC001-210045- /O.NEW.KBOU.TO.W.0035.080621T0003Z-080621T0045Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DENVER CO 603 PM MDT FRI JUN 20 2008 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * TORNADO WARNING FOR... EASTERN ADAMS COUNTY IN NORTHEAST COLORADO * UNTIL 645 PM MDT * AT 603 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 11 MILES NORTH OF LEADER...OR 18 MILES SOUTHWEST OF FORT MORGAN. THIS STORM WAS MOVING SOUTHEAST AT 30 MPH. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SHAMROCK AND LEADER. 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 3975 10372 3975 10408 4000 10413 4000 10372 TIME...MOT...LOC 0003Z 308DEG 19KT 4004 10397 $$ RPK
3 follow-up statements
000 WWUS55 KBOU 210011 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 611 PM MDT FRI JUN 20 2008 COC001-210045- /O.CON.KBOU.TO.W.0035.000000T0000Z-080621T0045Z/ ADAMS CO- 611 PM MDT FRI JUN 20 2008 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM MDT FOR EASTERN ADAMS COUNTY... AT 611 PM MDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED A TORNADO NEAR ADENA. THIS STORM WAS LOCATED 8 MILES NORTHEAST OF LEADER...OR 22 MILES SOUTH OF FORT MORGAN. THIS STORM WAS MOVING SOUTH AT 30 MPH. LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SHAMROCK AND LEADER. THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. LAT...LON 3975 10372 3975 10408 4000 10413 4000 10372 TIME...MOT...LOC 0011Z 308DEG 19KT 3996 10392 $$ RPK
000 WWUS55 KBOU 210020 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 620 PM MDT FRI JUN 20 2008 COC001-210045- /O.CON.KBOU.TO.W.0035.000000T0000Z-080621T0045Z/ ADAMS CO- 620 PM MDT FRI JUN 20 2008 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM MDT FOR EASTERN ADAMS COUNTY... AT 620 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS LOCATED 4 MILES WEST OF SHAMROCK...OR 25 MILES SOUTH OF FORT MORGAN. THIS STORM WAS MOVING SOUTH AT 30 MPH. LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SHAMROCK AND LEADER. 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 10372 3975 10408 4000 10413 4000 10372 TIME...MOT...LOC 0020Z 308DEG 19KT 3990 10386 $$ RPK
000 WWUS55 KBOU 210030 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 630 PM MDT FRI JUN 20 2008 COC001-210045- /O.CON.KBOU.TO.W.0035.000000T0000Z-080621T0045Z/ ADAMS CO- 630 PM MDT FRI JUN 20 2008 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 645 PM MDT FOR EASTERN ADAMS COUNTY... AT 630 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS LOCATED 6 MILES WEST OF SHAMROCK...OR 27 MILES SOUTH OF FORT MORGAN. THIS STORM WAS MOVING SOUTH AT 30 MPH. LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SHAMROCK AND LEADER. THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING LARGE DAMAGING HAIL UP TO BASEBALL SIZE AND DESTRUCTIVE STRAIGHT LINE WINDS IN EXCESS OF 70 MPH. LAT...LON 3975 10372 3975 10408 4000 10413 4000 10372 TIME...MOT...LOC 0030Z 308DEG 19KT 3987 10391 $$
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 6:43 PM MDT | Tornado Warning | BOU | Adams, Arapahoe | 38 min |
| Jun 20, 7:03 PM MDT | Tornado Warning | BOU | Elbert, Lincoln, Washington | 42 min |
| Jun 20, 7:37 PM MDT | Tornado Warning | BOU | Lincoln | 38 min |
| Jun 20, 7:43 PM MDT | Severe Thunderstorm Warning | BOU | Weld | 37 min |
| Jun 20, 8:16 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 44 min |
| Jun 20, 8:26 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe | 49 min |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.