Alert archive / Colorado / Tornado Warnings in 2011
Tornado Warning 22, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this tornado warning at Jun 19, 2011, 6:13 PM MDT for Sedgwick County, Colorado. It was in force for 32 min. 2 reports 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 19, 2011, 6:13 PM MDT (00:13 UTC)
- Expired
- Jun 19, 2011, 6:45 PM MDT
- In force
- 32 min
- Issued by
- NWS Denver/Boulder, CO
- Area
- Storm-based polygon
County Sedgwick County, CO
The radar
The Goodland radar (KGLD), 174 km from the middle of the area, began a volume at 00:16 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 19, 6:20 PM MDT | HAIL 2 | 6 Se Julesburg, CO | |
| Jun 19, 6:24 PM MDT | HAIL 2 | 5 Se Julesburg, CO |
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 19, 2:04 PM MDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.2 hours before the alert went out and 140 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
- 1727 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 1157 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 121 m²/s²
- 0-3 km storm-relative helicity
- 293 m²/s²
- Significant tornado parameter
- 2.2
- Supercell composite
- 17.6
The text
As transmitted, in the capitals the NWS used until 2016.
042
WFUS55 KBOU 200013
TORBOU
COC115-200045-
/O.NEW.KBOU.TO.W.0022.110620T0013Z-110620T0045Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DENVER CO
613 PM MDT SUN JUN 19 2011
THE NATIONAL WEATHER SERVICE IN DENVER HAS ISSUED A
* TORNADO WARNING FOR...
EASTERN SEDGWICK COUNTY IN NORTHEAST COLORADO
* UNTIL 645 PM MDT
* AT 613 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 8 MILES NORTH OF
SIXTEEN-MILE CORNER...OR 8 MILES SOUTH OF JULESBURG. THIS STORM WAS
MOVING EAST AT 30 MPH.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
SIXTEEN-MILE CORNER...OVID AND JULESBURG.
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 LARGE
DAMAGING HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS.
&&
LAT...LON 4075 10205 4075 10242 4100 10242 4100 10240
4100 10204
TIME...MOT...LOC 0013Z 267DEG 27KT 4087 10224
$$The office that day
Everything else NWS Denver/Boulder, CO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 6:28 PM MDT | Tornado Warning | BOU | Logan, Phillips | 47 min |
| Jun 19, 6:44 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Washington | 61 min |
| Jun 19, 6:58 PM MDT | Tornado Warning | BOU | Phillips | 47 min |
| Jun 19, 7:39 PM MDT | Severe Thunderstorm Warning | BOU | Logan, Washington | 27 min |
| Jun 19, 7:44 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Weld | 46 min |
| Jun 19, 7:59 PM MDT | Severe Thunderstorm Warning | BOU | Adams, Arapahoe, Denver | 21 min |
| Jun 19, 8:41 PM MDT | Severe Thunderstorm Warning | BOU | Phillips | 34 min |
| Jun 19, 8:58 PM MDT | Special Weather Statement | BOU | Morgan | 32 min |
| Jun 19, 9:18 PM MDT | Areal Flood Advisory | BOU | Morgan | 87 min |
| Jun 19, 9:34 PM MDT | Areal Flood Advisory | BOU | Boulder | 86 min |
| Jun 19, 9:38 PM MDT | Special Weather Statement | BOU | Morgan | 37 min |
| Jun 19, 9:44 PM MDT | Severe Thunderstorm Warning | BOU | Morgan, Washington | 46 min |
| Jun 19, 10:29 PM MDT | Severe Thunderstorm Warning | BOU | Washington | 31 min |
| Jun 19, 11:00 PM MDT | Areal Flood Advisory | BOU | Boulder | 7 hr |
| Jun 19, 11:15 PM MDT | Special Weather Statement | BOU | Arapahoe | 30 min |
| Jun 20, 10:54 AM MDT | River Flood Advisory | BOU | Weld | 10 days |
| Jun 20, 10:54 AM MDT | River Flood Advisory | BOU | Adams | 7 hr |
| Jun 20, 10:54 AM MDT | River Flood Advisory | BOU | Weld | 30 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.