Alert archive / Minnesota / Tornado Warnings in 2011
Tornado Warning 28, NWS Twin Cities, MN
NWS Twin Cities, MN issued this tornado warning at Jun 21, 2011, 3:13 PM CDT for Anoka County, Hennepin County, Ramsey County, Minnesota. It was in force for 32 min. 4 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 21, 2011, 3:13 PM CDT (20:13 UTC)
- Expired
- Jun 21, 2011, 3:45 PM CDT
- In force
- 32 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
Counties Anoka County, MN, Hennepin County, MN, Ramsey County, MN
The radar
The Minneapolis radar (KMPX), 45 km from the middle of the area, began a volume at 20:16 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 21, 3:15 PM CDT | TORNADO | Coon Rapids, MN | TORNADO REPORTED NEAR THE INTERSECTION OF HANSON AND MAIN ST. TREES AND POWER LINES DOWN IN COON RAPIDS. |
| Jun 21, 3:17 PM CDT | FUNNEL CLOUD | Blaine, MN | AT HWY 65 AND HWY 10. |
| Jun 21, 3:29 PM CDT | FUNNEL CLOUD | Andover, MN | AT THE INTERSECTION OF BUNKER LAKE AND HANSON BLVD. |
| Jun 21, 3:32 PM CDT | TORNADO | Coon Rapids, MN | TORNADO REPORTED NEAR THE INTERSECTION OF HANSON AND MAINE. |
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 21, 2:11 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 8.2 hours before the alert went out and 46 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.
751 WFUS53 KMPX 212013 TORMPX MNC003-053-123-212045- /O.NEW.KMPX.TO.W.0028.110621T2013Z-110621T2045Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 313 PM CDT TUE JUN 21 2011 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * TORNADO WARNING FOR... CENTRAL ANOKA COUNTY IN EAST CENTRAL MINNESOTA... NORTHEASTERN HENNEPIN COUNTY IN EAST CENTRAL MINNESOTA... EXTREME NORTHWESTERN RAMSEY COUNTY IN EAST CENTRAL MINNESOTA... * UNTIL 345 PM CDT * AT 312 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS NEAR SPRING LAKE PARK...OR OVER SPRING LAKE PARK...AND MOVING NORTH AT 30 MPH. * LOCATIONS IN THE WARNING INCLUDE... SPRING LAKE PARK... MOUNDS VIEW... BLAINE... OAK PARK... COON RAPIDS... ANDOVER... 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 4526 9341 4533 9324 4511 9316 4508 9326 TIME...MOT...LOC 2013Z 159DEG 25KT 4514 9325 $$ CLF
1 follow-up statement
336 WWUS53 KMPX 212021 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 321 PM CDT TUE JUN 21 2011 MNC053-123-212035- /O.CAN.KMPX.TO.W.0028.000000T0000Z-110621T2045Z/ HENNEPIN MN-RAMSEY MN- 321 PM CDT TUE JUN 21 2011 ...THE TORNADO WARNING FOR NORTHWESTERN RAMSEY AND NORTHEASTERN HENNEPIN COUNTIES IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. LAT...LON 4515 9318 4512 9327 4526 9341 4533 9324 TIME...MOT...LOC 2020Z 159DEG 25KT 4519 9327 $$ MNC003-212045- /O.CON.KMPX.TO.W.0028.000000T0000Z-110621T2045Z/ ANOKA MN- 321 PM CDT TUE JUN 21 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL ANOKA COUNTY UNTIL 345 PM CDT... AT 316 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR OAK PARK...MOVING NORTH AT 30 MPH. NUMEROUS SPOTTERS HAVE BEEN REPORTING FUNNEL CLOUDS IN THE BLAINE AREA. LOCATIONS IMPACTED INCLUDE... ANDOVER. LAT...LON 4515 9318 4512 9327 4526 9341 4533 9324 TIME...MOT...LOC 2020Z 159DEG 25KT 4519 9327 $$ 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, 2:21 PM CDT | Tornado Warning | MPX | Dakota, Washington | 24 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.