Alert archive / Colorado / Tornado Warnings in 2007
Tornado Warning 46, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jun 22, 2007, 4:51 PM MDT for Arapahoe County, Colorado. It was in force for 24 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 22, 2007, 4:51 PM MDT (22:51 UTC)
- Expired
- Jun 22, 2007, 5:15 PM MDT
- In force
- 24 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Counties, with a storm outline in the text
County Arapahoe County, CO
The radar
The Denver radar (KFTG), 40 km from the middle of the area, began a volume at 22:51 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 22, 4:55 PM MDT | HAIL 1 | 5 Se Byers, CO | COVERING THE GROUND |
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 22, 2:22 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 10.9 hours before the alert went out and 79 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
- 119 J/kg
- Mixed-layer CIN
- -458 J/kg
- Mixed-layer LCL
- 1669 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -1 m²/s²
- 0-3 km storm-relative helicity
- 27 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 222251 TORBOU COC005-222315- /O.NEW.KBOU.TO.W.0046.070622T2251Z-070622T2315Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DENVER CO 451 PM MDT FRI JUN 22 2007 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * TORNADO WARNING FOR... EASTERN ARAPAHOE COUNTY IN NORTHEAST COLORADO * UNTIL 515 PM MDT * AT 451 PM MDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD 4 MILES EAST OF BYERS...OR ABOUT 38 MILES NORTHWEST OF LIMON. THIS STORM WAS MOVING SOUTH AT 10 MPH. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DEER TRAIL AND BYERS. SPOTTERS HAVE ALSO REPORTED ONE INCH HAIL IN THE TOWN OF BYERS. 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 AND DESTRUCTIVE STRAIGHT LINE WINDS. LAT...LON 3973 10424 3957 10427 3957 10392 3973 10388 $$ DANKERS
2 follow-up statements
000 WWUS55 KBOU 222305 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 501 PM MDT FRI JUN 22 2007 COC005-222315- /O.CON.KBOU.TO.W.0046.000000T0000Z-070622T2315Z/ ARAPAHOE CO- 501 PM MDT FRI JUN 22 2007 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM MDT FOR EASTERN ARAPAHOE COUNTY... AT 501 PM MDT...A STRONG THUNDERSTORM WAS LOCATED 7 MILES WEST OF DEER TRAIL...OR ABOUT 35 MILES NORTHWEST OF LIMON. THIS STORM WAS MOVING SOUTH AT 20 MPH. LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DEER TRAIL AND BYERS. SPOTTERS HAVE REPORTED FUNNEL CLOUDS WITH THIS THUNDERSTORM AND HAIL UP TO THE SIZE OF QUARTERS HAS BEEN REPORTED IN THE TOWN OF BYERS. THE THUNDERSTORM WILL BE MOVING INTO NORTH-CENTRAL ELBERT COUNTY BY 515 PM. SPOTTERS CONTINUE TO REPORT SOME ROTATION IN THE STORM CLOUDS...SO A TORNADO IS STILL POSSIBLE OVER SOUTHEASTERN ARAPAHOE COUNTY. THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING LARGE DAMAGING HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. LAT...LON 3973 10424 3957 10427 3957 10392 3973 10388 $$ DANKERS
000 WWUS55 KBOU 222315 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 514 PM MDT FRI JUN 22 2007 COC005-222324- /O.EXP.KBOU.TO.W.0046.000000T0000Z-070622T2315Z/ ARAPAHOE CO- 514 PM MDT FRI JUN 22 2007 ...THE TORNADO WARNING FOR EASTERN ARAPAHOE COUNTY EXPIRED AT 515 PM MDT... THE THUNDERSTORM THAT PROMPTED THE WARNING HAS EXITED THE AREA. THE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED AND IS NO LONGER EXPECTED TO PRODUCE SEVERE WEATHER. PERIODS OF HEAVY RAIN...SMALL HAIL AND DANGEROUS LIGHTNING WILL CONTINUE OVER EASTERN ARAPAHOE AND NORTHEASTERN ELBERT COUNTIES THROUGH 530 PM. LAT...LON 3973 10424 3957 10427 3957 10392 3973 10388 $$ DANKERS
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 2:33 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 33 min |
| Jun 22, 3:40 PM MDT | Severe Thunderstorm Warning | BOU | Elbert | 35 min |
| Jun 22, 3:47 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 43 min |
Nearby
Tornado Warnings in Colorado, 2007Every tornado warning in 2007Tornadoes in 2007
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.