Alert archive / Colorado / Tornado Warnings in 2012
Tornado Warning 26, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Sep 27, 2012, 1:29 PM MDT for Elbert 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
- Sep 27, 2012, 1:29 PM MDT (19:29 UTC)
- Expired
- Sep 27, 2012, 2:00 PM MDT
- In force
- 31 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
County Elbert County, CO
The radar
The Denver radar (KFTG), 43 km from the middle of the area, began a volume at 19:29 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, 7.5 hours before the alert went out and 104 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
- 50 J/kg
- Mixed-layer CIN
- -111 J/kg
- Mixed-layer LCL
- 1041 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 81 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
332 WFUS55 KBOU 271929 TORBOU COC039-272000- /O.NEW.KBOU.TO.W.0026.120927T1929Z-120927T2000Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DENVER CO 129 PM MDT THU SEP 27 2012 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * TORNADO WARNING FOR... NORTHWESTERN ELBERT COUNTY IN EAST CENTRAL COLORADO * UNTIL 200 PM MDT * AT 127 PM MDT...TRAINED WEATHER SPOTTERS REPORTED A FUNNEL CLOUD EAST OF LARKSPUR IN WESTERN ELBERT COUNTY. BRIEF FUNNEL CLOUDS OR WEAK SHORT LIVED TORNADOES WILL BE POSSIBLE ALONG THIS LINE WHICH EXTENDS FROM 19 MILES NORTHEAST OF KIOWA TO 6 MILES SOUTH OF ELIZABETH...OR ALONG A LINE FROM 34 MILES NORTHWEST OF LIMON TO 31 MILES NORTH OF COLORADO SPRINGS. THESE STORMS WERE MOVING SOUTHEAST AT 10 MPH. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO KIOWA AND ELIZABETH. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. && LAT...LON 3956 10397 3920 10464 3934 10466 3956 10434 TIME...MOT...LOC 1927Z 306DEG 8KT 3953 10421 3928 10462 $$
2 follow-up statements
211 WWUS55 KBOU 271950 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 150 PM MDT THU SEP 27 2012 COC039-272000- /O.CON.KBOU.TO.W.0026.000000T0000Z-120927T2000Z/ ELBERT CO- 150 PM MDT THU SEP 27 2012 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 200 PM MDT FOR NORTHWESTERN ELBERT COUNTY... AT 146 PM MDT...TRAINED WEATHER SPOTTERS WERE NO LONGER REPORTINIG ANY FUNNEL CLOUDS. HOWEVER...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE THE POSSIBILITY OF SHORT-LIVED FUNNEL CLOUDS OR TORNADOS FROM A LINE OF STORMS THAT STRETCH ACROSS WESTERN ELBERT COUNTY. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 19 MILES NORTHEAST OF KIOWA TO 7 MILES SOUTH OF ELIZABETH...OR ALONG A LINE EXTENDING FROM 31 MILES NORTHWEST OF LIMON TO 30 MILES NORTHEAST OF COLORADO SPRINGS. THESE STORMS WERE MOVING SOUTHEAST AT 10 MPH. LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO KIOWA AND ELIZABETH. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. && LAT...LON 3956 10397 3920 10464 3934 10466 3956 10434 TIME...MOT...LOC 1946Z 306DEG 8KT 3950 10417 3926 10458 $$ DANKERS
933 WWUS55 KBOU 272001 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 201 PM MDT THU SEP 27 2012 COC039-272010- /O.EXP.KBOU.TO.W.0026.000000T0000Z-120927T2000Z/ ELBERT CO- 201 PM MDT THU SEP 27 2012 ...THE TORNADO WARNING FOR NORTHWESTERN ELBERT COUNTY HAS EXPIRED... THE THUNDERSTORMS THAT PROMPTED THE WARNING HAVE WEAKENED AND ARE NO LONGER EXPECTED TO PRODUCE SEVERE WEATHER. THE LINE OF THUNDERSTORMS WILL CONTINUE PRODUCING BRIEF HEAVY RAIN SHOWERS AS THEY MOVE SOUTHEAST AT ABOUT 10 MPH. LAT...LON 3956 10397 3920 10464 3934 10466 3956 10434 TIME...MOT...LOC 2000Z 306DEG 8KT 3948 10414 3924 10455 $$ DANKERS
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 26, 6:20 PM MDT | Areal Flood Advisory | BOU | Weld | 85 min |
| Sep 26, 6:48 PM MDT | Flash Flood Warning | BOU | Weld | 2 hr |
| Sep 27, 1:15 PM MDT | Tornado Warning | BOU | Douglas | 29 min |
| Sep 27, 4:40 PM MDT | Areal Flood Advisory | BOU | Washington | 80 min |
| Sep 27, 5:00 PM MDT | Special Weather Statement | BOU | Weld | 30 min |
Nearby
Tornado Warnings in Colorado, 2012Every tornado warning in 2012Tornadoes in 2012
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.