Alert archive / Colorado / Tornado Warnings in 2007
Tornado Warning 25, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at May 4, 2007, 8:44 PM MDT for Washington County, Colorado. It was in force for 46 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
- May 4, 2007, 8:44 PM MDT (02:44 UTC)
- Expired
- May 4, 2007, 9:30 PM MDT
- In force
- 46 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Counties, with a storm outline in the text
County Washington County, CO
The radar
The Denver radar (KFTG), 122 km from the middle of the area, began a volume at 02:47 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 |
|---|---|---|---|
| May 4, 5:36 PM MDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 2.7 hours before the alert went out and 19 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
- 1202 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 201 m²/s²
- 0-3 km storm-relative helicity
- 761 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 050245 TORBOU COC121-050330- /O.NEW.KBOU.TO.W.0025.070505T0244Z-070505T0330Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DENVER CO 844 PM MDT FRI MAY 4 2007 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * TORNADO WARNING FOR... SOUTHERN WASHINGTON COUNTY IN NORTHEAST COLORADO * UNTIL 930 PM MDT * AT 844 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 10 MILES SOUTHWEST OF THURMAN...OR ABOUT 24 MILES NORTHEAST OF LIMON. THIS STORM WAS MOVING NORTHEAST AT 20 MPH. IT ALSO CONTAINED GOLF BALL SIZED HAIL. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO THURMAN... ARICKAREE SCHOOL AND ANTON. 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 3957 10340 3958 10289 3993 10280 3998 10310 $$ BARJENBRUCH
1 follow-up statement
000 WWUS55 KBOU 050318 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 917 PM MDT FRI MAY 4 2007 COC121-050330- /O.CON.KBOU.TO.W.0025.000000T0000Z-070505T0330Z/ WASHINGTON CO- 917 PM MDT FRI MAY 4 2007 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 930 PM MDT FOR SOUTHEASTERN WASHINGTON COUNTY... AT 917 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM HAD ALSO PRODUCED GOLF BALL SIZED HAIL AS IT MOVE NORTHEAST OUT OF LINCOLN COUNTY. THE STORM WAS NOW LOCATED 5 MILES EAST OF THURMAN...OR ABOUT 37 MILES NORTHEAST OF LIMON....MOVING NORTHEAST AT 25 MPH. LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO THURMAN AND ARICKAREE SCHOOL. THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM MDT SATURDAY MORNING FOR NORTHEASTERN COLORADO. LAT...LON 3957 10335 3958 10289 3983 10282 3988 10304 $$ BARJENBRUCH
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 4, 6:21 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe | 39 min |
| May 4, 6:39 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 38 min |
| May 4, 6:41 PM MDT | Tornado Warning | BOU | Arapahoe | 31 min |
| May 4, 6:58 PM MDT | Tornado Warning | BOU | Washington | 47 min |
| May 4, 8:15 PM MDT | Tornado Warning | BOU | Lincoln | 45 min |
| May 4, 8:42 PM MDT | Tornado Warning | BOU | Elbert, Lincoln | 48 min |
| May 4, 9:00 PM MDT | Tornado Warning | BOU | Lincoln | 45 min |
| May 4, 9:28 PM MDT | Tornado Warning | BOU | Lincoln | 47 min |
| May 4, 9:32 PM MDT | Tornado Warning | BOU | Washington | 43 min |
| May 4, 10:15 PM MDT | Tornado Warning | BOU | Lincoln | 30 min |
| May 4, 11:00 PM MDT | Severe Thunderstorm Warning | BOU | Phillips, Sedgwick | 60 min |
| May 4, 11:22 PM MDT | Tornado Warning | BOU | Phillips, Sedgwick | 38 min |
| May 5, 11:25 AM MDT | Severe Thunderstorm Warning | BOU | Logan | 16 min |
| May 5, 11:58 AM MDT | Tornado Warning | BOU | Logan | 47 min |
| May 5, 12:37 PM MDT | Tornado Warning | BOU | Logan | 28 min |
| May 5, 4:01 PM MDT | Tornado Warning | BOU | Adams | 29 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.