Alert archive / Colorado / Tornado Warnings in 2011
Tornado Warning 9, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at May 28, 2011, 8:54 PM MDT for Lincoln County, Colorado. It was in force for 51 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
- May 28, 2011, 8:54 PM MDT (02:54 UTC)
- Expired
- May 28, 2011, 9:45 PM MDT
- In force
- 51 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
County Lincoln County, CO
The radar
The Pueblo radar (KPUX), 76 km from the middle of the area, began a volume at 02:55 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 |
|---|---|---|---|
| May 28, 8:57 PM MDT | HAIL 1 | 5 Ne Punkin Center, 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, 2.9 hours before the alert went out and 112 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
- 1444 m above ground
- 0-6 km bulk shear
- 73 kt
- 0-1 km storm-relative helicity
- 144 m²/s²
- 0-3 km storm-relative helicity
- 429 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
360
WFUS55 KBOU 290254
TORBOU
COC073-290345-
/O.NEW.KBOU.TO.W.0009.110529T0254Z-110529T0345Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
854 PM MDT SAT MAY 28 2011
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A
* TORNADO WARNING FOR...
CENTRAL LINCOLN COUNTY IN EAST CENTRAL COLORADO
* UNTIL 945 PM MDT
* AT 853 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 18 MILES WEST OF
BOYERO...OR 28 MILES SOUTH OF LIMON. THIS STORM WAS MOVING EAST
AT 35 MPH. A TRAINED WEATHER SPOTTER ALSO REPORTED A POSSIBLE
TORNADO WITH THIS STORM.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BOYERO.
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 3881 10370 3887 10369 3897 10363 3908 10316
3879 10316
TIME...MOT...LOC 0253Z 277DEG 29KT 3887 10357
$$
BARJENBRUCH2 follow-up statements
186
WWUS55 KBOU 290311
SVSBOU
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
911 PM MDT SAT MAY 28 2011
COC073-290345-
/O.CON.KBOU.TO.W.0009.000000T0000Z-110529T0345Z/
LINCOLN CO-
911 PM MDT SAT MAY 28 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 945 PM MDT FOR EAST
CENTRAL LINCOLN COUNTY...
AT 910 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS STORM WAS
LOCATED 11 MILES SOUTHWEST OF BOYERO...OR 30 MILES SOUTHEAST OF
LIMON. THIS STORM WAS MOVING EAST AT 30 MPH.
LOCATIONS REMAINING IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
BOYERO.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING
1 INCH HAIL AND DAMAGING WINDS UP TO 60 MPH.
&&
LAT...LON 3880 10351 3886 10351 3900 10349 3908 10316
3879 10316
TIME...MOT...LOC 0310Z 273DEG 27KT 3886 10341
$$
BARJENBRUCH118
WWUS55 KBOU 290337
SVSBOU
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
937 PM MDT SAT MAY 28 2011
COC073-290346-
/O.EXP.KBOU.TO.W.0009.000000T0000Z-110529T0345Z/
LINCOLN CO-
937 PM MDT SAT MAY 28 2011
...THE TORNADO WARNING FOR EAST CENTRAL LINCOLN COUNTY WILL EXPIRE AT
945 PM MDT...
THE THUNDERSTORM THAT PROMPTED THE WARNING HAS WEAKENED AND WILL BE
MOVING OUT OF EXTREME EASTERN LINCOLN COUNTY BY 945 PM.
LAT...LON 3880 10351 3886 10351 3900 10349 3908 10316
3879 10316
TIME...MOT...LOC 0336Z 273DEG 27KT 3885 10316
$$
BARJENBRUCHThe office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 8:04 PM MDT | Severe Thunderstorm Warning | BOU | Elbert, Lincoln | 41 min |
| May 28, 8:45 PM MDT | Severe Thunderstorm Warning | BOU | Lincoln | 45 min |
| May 28, 10:23 PM MDT | Special Weather Statement | BOU | Elbert | 37 min |
| May 28, 11:41 PM MDT | Special Weather Statement | BOU | Elbert | 34 min |
| May 29, 3:35 PM MDT | High Wind Watch | BOU | Adams, Arapahoe, Boulder, Broomfield, Clear Creek, Denver and 7 more | 14 hr |
Nearby
Tornado Warnings in Colorado, 2011Every tornado warning in 2011Tornadoes in 2011
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.