Alert archive / Colorado / Tornado Warnings in 2005
Tornado Warning 23, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jun 12, 2005, 11:29 AM MDT for Weld County, Colorado. It was in force for 31 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 12, 2005, 11:29 AM MDT (17:29 UTC)
- Expired
- Jun 12, 2005, 12:00 PM MDT
- In force
- 31 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Counties, with a storm outline in the text
County Weld County, CO
The radar
The Denver radar (KFTG), 38 km from the middle of the area, began a volume at 17:30 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 nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 5.5 hours before the alert went out and 116 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
- 160 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 715 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 28 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 121729 TORBOU COC123-121800- /O.NEW.KBOU.TO.W.0023.050612T1729Z-050612T1800Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DENVER CO 1129 AM MDT SUN JUN 12 2005 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * TORNADO WARNING FOR... SOUTH CENTRAL WELD COUNTY IN NORTHEAST COLORADO * UNTIL NOON MDT * AT 1125 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 3 MILES WEST OF KEENESBURG...OR ABOUT 24 MILES SOUTHEAST OF GREELEY. THIS STORM WAS MOVING NORTHEAST AT 10 MPH. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO KEENESBURG. 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 4015 10459 4003 10462 4009 10442 4021 10451 $$ GIMMESTAD
2 follow-up statements
000 WWUS55 KBOU 121746 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 1145 AM MDT SUN JUN 12 2005 COC123-121800- /O.CON.KBOU.TO.W.0023.000000T0000Z-050612T1800Z/ WELD CO- 1145 AM MDT SUN JUN 12 2005 ...A TORNADO WARNING CONTINUES UNTIL NOON MDT FOR SOUTH CENTRAL WELD COUNTY... AT 1140 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS LOCATED OVER KEENESBURG...OR ABOUT 24 MILES SOUTHEAST OF GREELEY. THIS STORM WAS MOVING EAST AT 5 MPH. LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO KEENESBURG. FUNNEL CLOUDS HAVE BEEN REPORTED NEAR KEENESBURG IN THE LAST 10 MINUTES. RADAR INDICATES ADDITIONAL AREAS OF ROTATION SOUTH OF KEENESBURG. TORNADOES MAY BE EMBEDDED IN RAIN IN THIS DEVELOPING THUNDERSTORM. DO NOT USE YOUR CAR TO TRY TO OUTRUN A TORNADO. CARS ARE EASILY TOSSED AROUND BY TORNADO WINDS. IF YOU ARE CAUGHT IN THE PATH OF A TORNADO...LEAVE THE CAR AND GO TO A STRONG BUILDING. IF NO SAFE STRUCTURE IS NEARBY...SEEK SHELTER IN A DITCH OR LOW SPOT AND COVER YOUR HEAD. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN DENVER. LAT...LON 4015 10459 4003 10462 4009 10442 4021 10451 $$ GIMMESTAD
000 WWUS55 KBOU 121758 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 1158 AM MDT SUN JUN 12 2005 COC123-121808- /O.EXP.KBOU.TO.W.0023.000000T0000Z-050612T1800Z/ WELD CO- 1158 AM MDT SUN JUN 12 2005 ...THE TORNADO WARNING FOR SOUTH CENTRAL WELD COUNTY EXPIRED AT NOON MDT... THE THUNDERSTORM THAT PROMPTED THE WARNING NO LONGER POSES A TORNADO THREAT. LAT...LON 4015 10459 4003 10462 4009 10442 4021 10451 $$ GIMMESTAD
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 12:21 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe | 24 min |
| Jun 12, 1:47 PM MDT | Severe Thunderstorm Warning | BOU | Logan | 37 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.