Alert archive / Colorado / Tornado Warnings in 2009
Tornado Warning 8, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jun 7, 2009, 3:12 PM MDT for Arapahoe County, Elbert County, Colorado. It was in force for 33 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
- Jun 7, 2009, 3:12 PM MDT (21:12 UTC)
- Expired
- Jun 7, 2009, 3:45 PM MDT
- In force
- 33 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
Counties Arapahoe County, CO, Elbert County, CO
The radar
The Denver radar (KFTG), 59 km from the middle of the area, began a volume at 21:12 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 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, 9.2 hours before the alert went out and 65 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 072112 TORBOU COC005-039-072145- /O.NEW.KBOU.TO.W.0008.090607T2112Z-090607T2145Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DENVER CO 312 PM MDT SUN JUN 7 2009 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * TORNADO WARNING FOR... NORTHEASTERN ELBERT COUNTY IN EAST CENTRAL COLORADO EASTERN ARAPAHOE COUNTY IN NORTHEAST COLORADO * UNTIL 345 PM MDT * AT 313 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 6 MILES SOUTHWEST OF DEER TRAIL...OR 28 MILES NORTHWEST OF LIMON. THIS STORM WAS MOVING EAST AT 20 MPH. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO JOLLY RANCH...DEER TRAIL AND AGATE. 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 3973 10372 3938 10373 3939 10417 3974 10418 TIME...MOT...LOC 2113Z 245DEG 15KT 3955 10407 $$ RPK
2 follow-up statements
000 WWUS55 KBOU 072122 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 322 PM MDT SUN JUN 7 2009 COC005-039-072145- /O.CON.KBOU.TO.W.0008.000000T0000Z-090607T2145Z/ ELBERT CO-ARAPAHOE CO- 322 PM MDT SUN JUN 7 2009 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 345 PM MDT FOR EASTERN ARAPAHOE AND NORTHEASTERN ELBERT COUNTIES... AT 321 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS LOCATED NEAR AGATE...OR 20 MILES NORTHWEST OF LIMON. THIS STORM WAS MOVING EAST AT 20 MPH. IN ADDITION WINDS IN EXCESS OF 60 MPH HAVE BEEN REPORTED NEAR AGATE. LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO JOLLY RANCH...DEER TRAIL AND AGATE. PRECAUTIONARY/PREPAREDNESS ACTIONS... THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. && LAT...LON 3973 10372 3938 10373 3939 10417 3974 10418 TIME...MOT...LOC 2121Z 245DEG 15KT 3948 10395 $$
000 WWUS55 KBOU 072131 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 331 PM MDT SUN JUN 7 2009 COC005-039-072145- /O.CON.KBOU.TO.W.0008.000000T0000Z-090607T2145Z/ ELBERT CO-ARAPAHOE CO- 331 PM MDT SUN JUN 7 2009 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 345 PM MDT FOR EASTERN ARAPAHOE AND NORTHEASTERN ELBERT COUNTIES... AT 330 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS LOCATED 5 MILES NORTHWEST OF JOLLY RANCH...OR 31 MILES NORTH OF LIMON. THIS STORM WAS MOVING EAST AT 20 MPH. ANOTHER SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO WAS NEAR AGATE MOVING EAST AT 20 MPH. LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO JOLLY RANCH...DEER TRAIL AND AGATE. 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 3973 10372 3938 10373 3939 10417 3974 10418 TIME...MOT...LOC 2130Z 215DEG 36KT 3971 10382 $$
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, 2:24 PM MDT | Tornado Warning | BOU | Arapahoe, Elbert | 51 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.