Alert archive / Minnesota / Tornado Warnings in 2011
Tornado Warning 27, NWS Twin Cities, MN
NWS Twin Cities, MN issued this tornado warning at Jun 21, 2011, 2:21 PM CDT for Dakota County, Washington County, Minnesota. It was in force for 24 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 21, 2011, 2:21 PM CDT (19:21 UTC)
- Expired
- Jun 21, 2011, 2:45 PM CDT
- In force
- 24 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
Counties Dakota County, MN, Washington County, MN
The radar
The Minneapolis radar (KMPX), 38 km from the middle of the area, began a volume at 19:21 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 21, 2:11 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 7.4 hours before the alert went out and 41 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
- 629 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 316 m²/s²
- 0-3 km storm-relative helicity
- 260 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
698 WFUS53 KMPX 211921 TORMPX MNC037-163-211945- /O.NEW.KMPX.TO.W.0027.110621T1921Z-110621T1945Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 221 PM CDT TUE JUN 21 2011 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * TORNADO WARNING FOR... SOUTHWESTERN WASHINGTON COUNTY IN EAST CENTRAL MINNESOTA... NORTH CENTRAL DAKOTA COUNTY IN EAST CENTRAL MINNESOTA... * UNTIL 245 PM CDT * AT 216 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS NEAR ROSEMOUNT... OR OVER ROSEMOUNT...AND MOVING NORTH AT 30 MPH. * LOCATIONS IN THE WARNING INCLUDE... ROSEMOUNT... ST PAUL PARK... INVER GROVE HEIGHTS... EAGAN... NEWPORT... SUNFISH... PRECAUTIONARY/PREPAREDNESS ACTIONS... WHEN A TORNADO WARNING IS ISSUED BASED ON RADAR...IT MEANS THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. && LAT...LON 4485 9320 4489 9298 4474 9295 4471 9311 TIME...MOT...LOC 1921Z 161DEG 24KT 4478 9305 $$ CLF
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 9:58 PM CDT | River Flood Watch | MPX | Chippewa, Lac qui Parle, Yellow Medicine | 47 hr |
| Jun 20, 9:58 PM CDT | River Flood Watch | MPX | Le Sueur, Scott, Sibley | 24 hr |
| Jun 20, 9:58 PM CDT | River Flood Watch | MPX | Carver | 66 hr |
| Jun 20, 10:09 PM CDT | River Flood Warning | MPX | Redwood | 70 hr |
| Jun 20, 11:11 PM CDT | Special Weather Statement | MPX | Martin | 49 min |
| Jun 20, 11:57 PM CDT | Special Weather Statement | MPX | Blue Earth, Faribault, Martin | 48 min |
| Jun 21, 12:32 AM CDT | Special Weather Statement | MPX | Faribault, Freeborn, Steele, Waseca | 58 min |
| Jun 21, 2:08 AM CDT | Special Weather Statement | MPX | Rice | 52 min |
| Jun 21, 3:19 AM CDT | Areal Flood Advisory | MPX | Dakota, Goodhue, Hennepin, Ramsey, Washington | 105 min |
| Jun 21, 11:15 AM CDT | River Flood Warning | MPX | Le Sueur, Scott, Sibley | 72 hr |
| Jun 21, 11:15 AM CDT | River Flood Warning | MPX | Dakota, Hennepin, Scott | 13 days |
| Jun 21, 1:46 PM CDT | Tornado Warning | MPX | Dakota, Goodhue | 29 min |
| Jun 21, 1:50 PM CDT | Tornado Warning | MPX | Kandiyohi | 25 min |
| Jun 21, 3:13 PM CDT | Tornado Warning | MPX | Anoka, Hennepin, Ramsey | 32 min |
| Jun 21, 4:42 PM CDT | Areal Flood Advisory | MPX | Benton, Sherburne, Stearns, Wright | 3 hr |
Nearby
Tornado Warnings in Minnesota, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.