Alert archive / Colorado / Tornado Warnings in 2005
Tornado Warning 35, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Sep 7, 2005, 6:44 PM MDT for Washington County, Colorado. It was in force for 31 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
- Sep 7, 2005, 6:44 PM MDT (00:44 UTC)
- Expired
- Sep 7, 2005, 7:15 PM MDT
- In force
- 31 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), 130 km from the middle of the area, began a volume at 00:47 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 7, 7:05 PM MDT | HAIL 1 | 18 Sw Otis, CO |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 0.7 hours before the alert went out and 21 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
- 37 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 3326 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 24 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 080044 TORBOU COC121-080115- /O.NEW.KBOU.TO.W.0035.050908T0044Z-050908T0115Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DENVER CO 644 PM MDT WED SEP 7 2005 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * TORNADO WARNING FOR... CENTRAL WASHINGTON COUNTY IN NORTHEAST COLORADO * UNTIL 715 PM MDT * AT 637 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 9 MILES NORTH OF ELBA...OR ABOUT 9 MILES SOUTHEAST OF AKRON. THIS STORM WAS MOVING SOUTH AT 20 MPH. IN ADDITION THIS STORM MAY PRODUCE DESTRUCTIVE HAIL UP TO THE SIZE OF BASEBALLS. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ELBA. 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 4013 10292 4013 10324 3977 10325 3978 10289 $$ RPK
2 follow-up statements
000 WWUS55 KBOU 080056 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 655 PM MDT WED SEP 7 2005 COC121-080115- /O.CON.KBOU.TO.W.0035.000000T0000Z-050908T0115Z/ WASHINGTON CO- 655 PM MDT WED SEP 7 2005 ...A TORNADO WARNING CONTINUES UNTIL 715 PM MDT FOR CENTRAL WASHINGTON COUNTY... AT 652 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS LOCATED 5 MILES NORTHEAST OF ELBA...OR ABOUT 15 MILES SOUTHEAST OF AKRON. THIS STORM WAS MOVING SOUTH AT 20 MPH. IN ADDITION THIS STORM WILL PRODUCE DESTRUCTIVE HAIL UP TO THE SIZE OF BASEBALLS. PERSONS LIVING IN AND TO THE EAST OF ELBA SHOULD TAKE COVER IMMEDIATELY LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ELBA. THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. LAT...LON 4013 10292 4013 10324 3977 10325 3978 10289 $$ RPK
000 WWUS55 KBOU 080120 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 719 PM MDT WED SEP 7 2005 COC121-080129- /O.EXP.KBOU.TO.W.0035.000000T0000Z-050908T0115Z/ WASHINGTON CO- 719 PM MDT WED SEP 7 2005 ...THE TORNADO WARNING FOR CENTRAL WASHINGTON COUNTY EXPIRED AT 715 PM MDT... THE THUNDERSTORM THAT PROMPTED THE WARNING HAD EXITED THE CENTRAL PORTIONS OF WASHINGTON COUNTY AND WAS MOVING INTO SOUTHEASTERN WASHINGTON COUNTY. LAT...LON 4013 10292 4013 10324 3977 10325 3978 10289 $$ RPK
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 6:00 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 45 min |
| Sep 7, 6:16 PM MDT | Tornado Warning | BOU | Washington | 29 min |
| Sep 7, 7:15 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 45 min |
| Sep 7, 8:01 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 44 min |
| Sep 7, 8:48 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 42 min |
Nearby
Tornado Warnings in Colorado, 2005Every tornado warning in 2005Tornadoes in 2005
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.