Alert archive / Colorado / Tornado Warnings in 2009
Tornado Warning 7, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jun 7, 2009, 2:24 PM MDT for Arapahoe County, Elbert County, Colorado. It was in force for 51 min. 2 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 7, 2009, 2:24 PM MDT (20:24 UTC)
- Expired
- Jun 7, 2009, 3:15 PM MDT
- In force
- 51 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
Counties Arapahoe County, CO, Elbert County, CO
The radar
The Denver radar (KFTG), 29 km from the middle of the area, began a volume at 20:24 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 7, 2:25 PM MDT | HAIL 1 | 9 Ne Ponderosa Park, CO | |
| Jun 7, 3:01 PM MDT | TSTM WND DMG | 14 W Agate, CO | STRONG OUTFLOW WINDS OF 50 TO 60 MPH. SNAPPED 2 PINE TREES ABOUT 25 TO 30 FEET TALL NEAR THE BASE. |
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 7, 11:02 AM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 8.4 hours before the alert went out and 104 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2464 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 23 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 072024 TORBOU COC005-039-072115- /O.NEW.KBOU.TO.W.0007.090607T2024Z-090607T2115Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DENVER CO 224 PM MDT SUN JUN 7 2009 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * TORNADO WARNING FOR... NORTHWESTERN ELBERT COUNTY IN EAST CENTRAL COLORADO CENTRAL ARAPAHOE COUNTY IN NORTHEAST COLORADO * UNTIL 315 PM MDT * AT 223 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 14 MILES NORTH OF PONDEROSA PARK...OR 24 MILES SOUTHEAST OF DENVER. THIS STORM WAS MOVING SOUTHEAST AT 15 MPH. ANOTHER SEVERE THUNDERSTORM WITH A POSSIBLE TORNADO WAS DEVELOPING 5 MILES NORTH OF ELIZABETH. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PONDEROSA PARK. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 3967 10419 3940 10419 3940 10465 3966 10467 TIME...MOT...LOC 2023Z 267DEG 12KT 3958 10455 $$ RPK
3 follow-up statements
000 WWUS55 KBOU 072034 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 234 PM MDT SUN JUN 7 2009 COC005-039-072115- /O.CON.KBOU.TO.W.0007.000000T0000Z-090607T2115Z/ ELBERT CO-ARAPAHOE CO- 234 PM MDT SUN JUN 7 2009 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 PM MDT FOR CENTRAL ARAPAHOE AND NORTHWESTERN ELBERT COUNTIES... AT 232 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A TORNADO 10 MILES NORTHEAST OF ELIZABETH. THIS STORM WAS MOVING SOUTHEAST AT 15 MPH. PERSONS IN NORTHWEST ELBERT COUNTY TO THE NORTH AND EAST OF ELIZABETH SHOULD TAKE COVER IMMEDIATELY. PRECAUTIONARY/PREPAREDNESS ACTIONS... THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. && LAT...LON 3967 10419 3940 10419 3940 10465 3966 10467 TIME...MOT...LOC 2032Z 286DEG 16KT 3955 10448 $$ RPK
000 WWUS55 KBOU 072049 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 249 PM MDT SUN JUN 7 2009 COC005-039-072115- /O.CON.KBOU.TO.W.0007.000000T0000Z-090607T2115Z/ ELBERT CO-ARAPAHOE CO- 249 PM MDT SUN JUN 7 2009 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 315 PM MDT FOR CENTRAL ARAPAHOE AND NORTHWESTERN ELBERT COUNTIES... AT 249 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS LOCATED 19 MILES SOUTHEAST OF OEA BUILDING...OR 35 MILES NORTHWEST OF LIMON. THIS STORM WAS MOVING EAST AT 20 MPH. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 3967 10419 3940 10419 3940 10465 3966 10467 TIME...MOT...LOC 2049Z 285DEG 26KT 3951 10426 $$
000 WWUS55 KBOU 072114 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 314 PM MDT SUN JUN 7 2009 COC005-039-072124- /O.EXP.KBOU.TO.W.0007.000000T0000Z-090607T2115Z/ ELBERT CO-ARAPAHOE CO- 314 PM MDT SUN JUN 7 2009 ...THE TORNADO WARNING FOR CENTRAL ARAPAHOE AND NORTHWESTERN ELBERT COUNTIES WILL EXPIRE AT 315 PM MDT... THE THUNDERSTORM THAT PROMPTED THE WARNING HAS EXITED THE AREA. LAT...LON 3967 10419 3940 10419 3940 10465 3966 10467 TIME...MOT...LOC 2114Z 285DEG 26KT 3946 10404 $$
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 6, 7:48 PM MDT | Special Weather Statement | BOU | Sedgwick | 27 min |
| Jun 6, 8:18 PM MDT | Severe Thunderstorm Warning | BOU | Sedgwick | 42 min |
| Jun 6, 11:27 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 48 min |
| Jun 7, 12:08 AM MDT | Severe Thunderstorm Warning | BOU | Logan, Sedgwick | 38 min |
| Jun 7, 12:01 PM MDT | Severe Thunderstorm Warning | BOU | Larimer, Weld | 59 min |
| Jun 7, 12:55 PM MDT | Areal Flood Advisory | BOU | Larimer, Weld | 55 min |
| Jun 7, 1:16 PM MDT | Tornado Warning | BOU | Adams, Broomfield, Weld | 19 min |
| Jun 7, 1:28 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver | 62 min |
| Jun 7, 1:40 PM MDT | Tornado Warning | BOU | Arapahoe, Denver | 35 min |
| Jun 7, 1:53 PM MDT | Tornado Warning | BOU | Arapahoe, Douglas, Elbert | 37 min |
| Jun 7, 2:12 PM MDT | Severe Thunderstorm Warning | BOU | Boulder, Larimer, Weld | 20 min |
| Jun 7, 3:12 PM MDT | Tornado Warning | BOU | Arapahoe, Elbert | 33 min |
| Jun 7, 3:24 PM MDT | Tornado Warning | BOU | Adams | 31 min |
| Jun 7, 3:43 PM MDT | Tornado Warning | BOU | Lincoln, Washington | 47 min |
| Jun 7, 4:05 PM MDT | Tornado Warning | BOU | Washington | 40 min |
Nearby
Tornado Warnings in Colorado, 2009Every tornado warning in 2009Tornadoes in 2009
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.