Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 19, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at May 10, 2011, 7:43 PM CDT for 6 counties in Minnesota. It was in force for 62 min. 11 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
- May 10, 2011, 7:43 PM CDT (00:43 UTC)
- Expired
- May 10, 2011, 8:45 PM CDT
- In force
- 62 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Anoka County, MN, Hennepin County, MN, Isanti County, MN, Mille Lacs County, MN, Sherburne County, MN, Wright County, MN
The radar
The Minneapolis radar (KMPX), 65 km from the middle of the area, began a volume at 00:47 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 10, 7:43 PM CDT | HAIL 1.75 | 3 W St Michael, MN | |
| May 10, 7:54 PM CDT | TORNADO | 2 Wnw Hanover, MN | AN NWS STORM SURVEY ASSESSED AN EF-1 TORNADO WITH MAXIMUM WINDS NEAR 90 MPH TRACKED FOR APPROXIMATELY THREE MILES TO THE NORTHEAST ENDING ONE MILE WEST OF ST. MICHAEL. A GARAGE WAS HEAVILY DAMAGED AT A HOUSEHOLD NEAR THE END OF THE TRACK WHICH WAS DETERMINED T |
| May 10, 7:58 PM CDT | HAIL 1 | St Michael, MN | |
| May 10, 7:58 PM CDT | TORNADO | 1 W St Michael, MN | TIME ESTIMATED. ROOF OF A HOME DAMAGED ON 42ND ST NE. |
| May 10, 7:59 PM CDT | TORNADO | 1 E St Michael, MN | DEBRIS VISIBLE CR 118 AND CR 35 |
| May 10, 8:10 PM CDT | HAIL 1 | 2 W Elk River, MN | |
| May 10, 8:13 PM CDT | HAIL 0.75 | Otsego, MN | |
| May 10, 8:15 PM CDT | HAIL 2 | Albertville, MN | |
| May 10, 8:19 PM CDT | HAIL 2.75 | Albertville, MN | |
| May 10, 8:24 PM CDT | HAIL 1.75 | Elk River, MN | |
| May 10, 8:25 PM CDT | HAIL 1 | Elk River, MN |
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 |
|---|---|---|---|
| May 10, 5:53 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 0.7 hours before the alert went out and 65 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
- 4330 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 1463 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 183 m²/s²
- 0-3 km storm-relative helicity
- 292 m²/s²
- Significant tornado parameter
- 3.0
- Supercell composite
- 33.9
The text
As transmitted, in the capitals the NWS used until 2016.
226 WUUS53 KMPX 110043 SVRMPX MNC003-053-059-095-141-171-110145- /O.NEW.KMPX.SV.W.0019.110511T0043Z-110511T0145Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 743 PM CDT TUE MAY 10 2011 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN ANOKA COUNTY IN EAST CENTRAL MINNESOTA... NORTHWESTERN HENNEPIN COUNTY IN EAST CENTRAL MINNESOTA... SOUTHWESTERN ISANTI COUNTY IN EAST CENTRAL MINNESOTA... SOUTH CENTRAL MILLE LACS COUNTY IN EAST CENTRAL MINNESOTA... EASTERN SHERBURNE COUNTY IN CENTRAL MINNESOTA... NORTHEASTERN WRIGHT COUNTY IN CENTRAL MINNESOTA... * UNTIL 845 PM CDT * AT 738 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR ALBERTVILLE...OR ABOUT 8 MILES NORTHEAST OF BUFFALO...AND MOVING NORTHEAST AT 25 MPH. LOCATIONS IN THE WARNING INCLUDE... PRINCETON... BECKER... BIG LAKE... OTSEGO... ELK RIVER... ZIMMERMAN... ST FRANCIS... PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR DAMAGING WINDS IN EXCESS OF 60 MPH AND LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT WEDNESDAY MORNING FOR EAST CENTRAL MINNESOTA. && LAT...LON 4562 9352 4543 9319 4514 9369 4536 9390 TIME...MOT...LOC 0043Z 215DEG 21KT 4527 9372 WIND...HAIL 60MPH 1.00IN $$
1 follow-up statement
793
WWUS53 KMPX 110133
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
833 PM CDT TUE MAY 10 2011
MNC171-110142-
/O.CAN.KMPX.SV.W.0019.000000T0000Z-110511T0145Z/
WRIGHT MN-
833 PM CDT TUE MAY 10 2011
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WRIGHT COUNTY IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 4552 9334 4544 9321 4526 9351 4535 9371
4556 9354 4556 9341
TIME...MOT...LOC 0132Z 215DEG 21KT 4538 9356
$$
MNC003-059-141-110145-
/O.CON.KMPX.SV.W.0019.000000T0000Z-110511T0145Z/
ISANTI MN-SHERBURNE MN-ANOKA MN-
833 PM CDT TUE MAY 10 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
ANOKA...EASTERN SHERBURNE AND SOUTHWESTERN ISANTI COUNTIES UNTIL 845
PM CDT...
AT 828 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING LARGE DESTRUCTIVE HAIL UP TO
BASEBALL SIZE...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM
HAS A HISTORY OF PRODUCING BASEBALL SIZE HAIL IN ALBERTVILLE AT 819
PM. THIS STORM WAS LOCATED NEAR ELK RIVER...OR 14 MILES SOUTH OF
PRINCETON...MOVING NORTHEAST AT 25 MPH.
LOCATIONS IMPACTED INCLUDE...
ZIMMERMAN...ST FRANCIS AND ATHENS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS SITUATION. IF YOU ARE IN THE PATH OF THIS
STORM...PREPARE IMMEDIATELY FOR DESTRUCTIVE HAIL...WHICH CAN
SIGNIFICANTLY DAMAGE WINDOWS...SIDING AND VEHICLES. DAMAGING WINDS
ARE ALSO EXPECTED...WHICH CAN UPROOT TREES AND DOWN POWER LINES. SEEK
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.
&&
LAT...LON 4552 9334 4544 9321 4526 9351 4535 9371
4556 9354 4556 9341
TIME...MOT...LOC 0132Z 215DEG 21KT 4538 9356
WIND...HAIL 60MPH 2.75IN
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 7:00 PM CDT | Severe Thunderstorm Warning | MPX | Freeborn, Steele | 60 min |
| May 10, 7:06 PM CDT | Severe Thunderstorm Warning | MPX | Benton, Mille Lacs, Sherburne | 39 min |
| May 10, 7:21 PM CDT | Severe Thunderstorm Warning | MPX | Benton, Morrison | 54 min |
| May 10, 7:24 PM CDT | Severe Thunderstorm Warning | MPX | Carver, Dakota, Hennepin, Scott | 66 min |
| May 10, 7:46 PM CDT | Severe Thunderstorm Warning | MPX | Carver, Hennepin, Scott | 59 min |
| May 10, 7:47 PM CDT | Severe Thunderstorm Warning | MPX | Benton, Mille Lacs | 58 min |
| May 10, 7:54 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Rice, Scott | 53 min |
| May 10, 7:55 PM CDT | Tornado Warning | MPX | Anoka, Hennepin, Sherburne, Wright | 35 min |
| May 10, 8:10 PM CDT | Tornado Warning | MPX | Hennepin | 35 min |
| May 10, 8:27 PM CDT | Severe Thunderstorm Warning | MPX | Isanti, Kanabec, Mille Lacs | 63 min |
| May 10, 8:44 PM CDT | Tornado Warning | MPX | Anoka, Isanti, Sherburne | 35 min |
| May 10, 8:51 PM CDT | Tornado Warning | MPX | Isanti, Kanabec, Mille Lacs | 39 min |
| May 10, 9:19 PM CDT | Severe Thunderstorm Warning | MPX | Kanabec | 41 min |
| May 10, 9:29 PM CDT | Severe Thunderstorm Warning | MPX | Isanti, Kanabec, Mille Lacs | 46 min |
| May 10, 9:31 PM CDT | Areal Flood Advisory | MPX | Isanti, Kanabec, Mille Lacs | 3 hr |
| May 10, 10:00 PM CDT | Severe Thunderstorm Warning | MPX | Isanti | 43 min |
| May 10, 10:03 PM CDT | Severe Thunderstorm Warning | MPX | Kanabec | 36 min |
| May 10, 10:19 PM CDT | Severe Thunderstorm Warning | MPX | Chisago | 56 min |
| May 10, 10:43 PM CDT | Severe Thunderstorm Warning | MPX | Chisago | 47 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2011Every severe thunderstorm warning 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.