Alert archive / Colorado / Tornado Warnings in 2012
Tornado Warning 22, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jun 15, 2012, 3:02 PM MDT for Adams County, Colorado. It was in force for 28 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 15, 2012, 3:02 PM MDT (21:02 UTC)
- Expired
- Jun 15, 2012, 3:30 PM MDT
- In force
- 28 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
County Adams County, CO
The radar
The Denver radar (KFTG), 7 km from the middle of the area, began a volume at 21:02 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 15, 3:06 PM MDT | TORNADO | 1 N Bennett, CO | WEAK TORNADO IN OPEN FIELD ON GROUND FOR 10 MINUTES. NO DAMAGE REPORTED. |
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 15, 1:35 PM MDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 9.0 hours before the alert went out and 106 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
- 7 J/kg
- Mixed-layer CIN
- -278 J/kg
- Mixed-layer LCL
- 1830 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -227 m²/s²
- 0-3 km storm-relative helicity
- 9 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
660 WFUS55 KBOU 152102 TORBOU COC001-152130- /O.NEW.KBOU.TO.W.0022.120615T2102Z-120615T2130Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE DENVER CO 302 PM MDT FRI JUN 15 2012 THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A * TORNADO WARNING FOR... SOUTH CENTRAL ADAMS COUNTY IN NORTHEAST COLORADO * UNTIL 330 PM MDT * AT 302 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 2 MILES NORTH OF MANILA VILLAGE...OR 23 MILES EAST OF DENVER. THIS STORM WAS MOVING NORTHEAST AT 15 MPH. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO MANILA VILLAGE...BENNETT AND NORTHEASTERN AURORA. 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 3986 10440 3974 10442 3974 10458 3986 10456 TIME...MOT...LOC 2102Z 241DEG 14KT 3980 10451 $$
2 follow-up statements
384 WWUS55 KBOU 152107 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 307 PM MDT FRI JUN 15 2012 COC001-152130- /O.CON.KBOU.TO.W.0022.000000T0000Z-120615T2130Z/ ADAMS CO- 307 PM MDT FRI JUN 15 2012 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM MDT FOR SOUTH CENTRAL ADAMS COUNTY... AT 307 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A TORNADO. THIS STORM WAS LOCATED 3 MILES NORTHEAST OF MANILA VILLAGE...OR 25 MILES EAST OF DENVER. THIS STORM WAS MOVING EAST AT 10 MPH. LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO MANILA VILLAGE...BENNETT AND NORTHEASTERN AURORA. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. && LAT...LON 3986 10440 3974 10442 3974 10458 3986 10456 TIME...MOT...LOC 2107Z 256DEG 7KT 3979 10449 $$
865 WWUS55 KBOU 152126 SVSBOU SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE DENVER CO 326 PM MDT FRI JUN 15 2012 COC001-152136- /O.EXP.KBOU.TO.W.0022.000000T0000Z-120615T2130Z/ ADAMS CO- 326 PM MDT FRI JUN 15 2012 ...THE TORNADO WARNING FOR SOUTH CENTRAL ADAMS COUNTY WILL EXPIRE AT 330 PM MDT... THE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED AND IS NO LONGER EXPECTED TO PRODUCE SEVERE WEATHER. LAT...LON 3986 10440 3974 10442 3974 10458 3986 10456 TIME...MOT...LOC 2126Z 256DEG 7KT 3980 10444 $$
The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 14, 8:40 PM MDT | Special Weather Statement | BOU | Lincoln | 35 min |
| Jun 14, 9:08 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 37 min |
| Jun 14, 9:41 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 34 min |
| Jun 14, 10:11 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 49 min |
| Jun 15, 2:50 AM MDT | Special Weather Statement | BOU | Arapahoe | 40 min |
| Jun 15, 1:49 PM MDT | Special Weather Statement | BOU | Jefferson | 26 min |
| Jun 15, 2:14 PM MDT | Special Weather Statement | BOU | Douglas | 31 min |
| Jun 15, 2:20 PM MDT | Severe Thunderstorm Warning | BOU | Arapahoe, Douglas | 40 min |
| Jun 15, 2:33 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Denver | 42 min |
| Jun 15, 3:27 PM MDT | Special Weather Statement | BOU | Adams, Arapahoe | 33 min |
| Jun 15, 3:52 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe | 38 min |
| Jun 15, 4:31 PM MDT | Special Weather Statement | BOU | Arapahoe | 29 min |
| Jun 15, 5:21 PM MDT | Special Weather Statement | BOU | Lincoln | 24 min |
| Jun 15, 5:41 PM MDT | Special Weather Statement | BOU | Washington | 34 min |
| Jun 15, 5:59 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 31 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.