Alert archive / Minnesota / Tornado Warnings in 2011
Tornado Warning 9, NWS Twin Cities, MN
NWS Twin Cities, MN issued this tornado warning at May 10, 2011, 8:10 PM CDT for Hennepin County, Minnesota. It was in force for 35 min. 20 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, 8:10 PM CDT (01:10 UTC)
- Expired
- May 10, 2011, 8:45 PM CDT
- In force
- 35 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
County Hennepin County, MN
The radar
The Minneapolis radar (KMPX), 18 km from the middle of the area, began a volume at 01:10 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, 8:10 PM CDT | HAIL 0.75 | 3 S Minneapolis, MN | |
| May 10, 8:10 PM CDT | HAIL 1 | Edina, MN | |
| May 10, 8:13 PM CDT | HAIL 1 | Eden Prairie, MN | |
| May 10, 8:15 PM CDT | HAIL 1.75 | Edina, MN | |
| May 10, 8:15 PM CDT | HAIL 2 | 3 Ne Eden Prairie, MN | |
| May 10, 8:20 PM CDT | HAIL 0.88 | Minneapolis, MN | NEAR TARGET FIELD |
| May 10, 8:25 PM CDT | HAIL 0.88 | Minneapolis, MN | IN UPTOWN |
| May 10, 8:28 PM CDT | HAIL 1.75 | 5 Wsw Minneapolis, MN | |
| May 10, 8:28 PM CDT | HAIL 2.5 | Golden Valley, MN | AT INTERSECTION OF 394 AND LOUISIANA AVE. |
| May 10, 8:29 PM CDT | HAIL 1.75 | Minneapolis, MN | REPORTED AT CORNER OF FRANKLIN AND LYNDALE. |
| May 10, 8:30 PM CDT | FUNNEL CLOUD | Hopkins, MN | HIGHWAY 169 AND EXCELSIOR LOOKING NORTH MOVING NORTHEAST |
| May 10, 8:30 PM CDT | HAIL 2.5 | St Louis Park, MN | |
| May 10, 8:33 PM CDT | HAIL 1.75 | Minneapolis, MN | BROADWAY AND INTERSTATE 94 |
| May 10, 8:35 PM CDT | HAIL 0.75 | Golden Valley, MN | |
| May 10, 8:35 PM CDT | HAIL 1.75 | 2 N St Louis Park, MN | |
| May 10, 8:35 PM CDT | HAIL 1.75 | Minneapolis, MN | TARGET FIELD |
| May 10, 8:35 PM CDT | HAIL 2 | Minneapolis, MN | BROADWAY AND INTERSTATE 94 |
| May 10, 8:39 PM CDT | HAIL 2 | 1 Nw Minneapolis, MN | |
| May 10, 8:40 PM CDT | HAIL 1.75 | St Louis Park, MN | |
| May 10, 8:50 PM CDT | HAIL 1.75 | Minneapolis, MN | TARGET FIELD |
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, 1.2 hours before the alert went out and 20 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.
547 WFUS53 KMPX 110110 TORMPX MNC053-110145- /O.NEW.KMPX.TO.W.0009.110511T0110Z-110511T0145Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 810 PM CDT TUE MAY 10 2011 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * TORNADO WARNING FOR... SOUTHEASTERN HENNEPIN COUNTY IN EAST CENTRAL MINNESOTA... * UNTIL 845 PM CDT * AT 805 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS NEAR EDEN PRAIRIE...AND MOVING NORTHEAST AT 25 MPH. THIS STORM WAS ALSO BECOMING BETTER ORGANIZED WITH BETTER ROTATION. * LOCATIONS IN THE WARNING INCLUDE... MINNEAPOLIS... THE LAKE MINNETONKA AREA... EDINA... HOPKINS... ST LOUIS PARK... GOLDEN VALLEY... ROBBINSDALE... 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. A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT WEDNESDAY MORNING FOR SOUTHEASTERN MINNESOTA. && LAT...LON 4504 9334 4492 9321 4481 9347 4490 9352 TIME...MOT...LOC 0109Z 222DEG 21KT 4486 9345 $$
3 follow-up statements
739 WWUS53 KMPX 110128 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 828 PM CDT TUE MAY 10 2011 MNC053-110145- /O.CON.KMPX.TO.W.0009.000000T0000Z-110511T0145Z/ HENNEPIN MN- 828 PM CDT TUE MAY 10 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL HENNEPIN COUNTY UNTIL 845 PM CDT... AT 823 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR ST LOUIS PARK...OR 6 MILES SOUTHWEST OF MINNEAPOLIS...MOVING NORTHEAST AT 25 MPH. AT 820 PM CDT...SPOTTERS REPORTED A FUNNEL CLOUD NEAR THE INTERSECTION OF HIGHWAY 169 AND VALLEY VIEW ROAD. LOCATIONS IMPACTED INCLUDE... MINNEAPOLIS...ST LOUIS PARK...GOLDEN VALLEY...EDINA...HOPKINS... AND ROBBINSDALE. LAT...LON 4504 9334 4492 9321 4484 9343 4490 9352 TIME...MOT...LOC 0125Z 220DEG 22KT 4494 9336 $$
216 WWUS53 KMPX 110135 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 835 PM CDT TUE MAY 10 2011 MNC053-110145- /O.CON.KMPX.TO.W.0009.000000T0000Z-110511T0145Z/ HENNEPIN MN- 835 PM CDT TUE MAY 10 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR EAST CENTRAL HENNEPIN COUNTY UNTIL 845 PM CDT... AT 828 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR ST LOUIS PARK...OR 5 MILES WEST OF MINNEAPOLIS... MOVING NORTHEAST AT 25 MPH. AT 830 PM CDT...SPOTTERS REPORTED A FUNNEL NEAR THE INTERSECTION OF HIGHWAY 169 AND EXCELSIOR BOULEVARD IN HOPKINS. LOCATIONS IMPACTED INCLUDE... MINNEAPOLIS...GOLDEN VALLEY...HOPKINS...ROBBINSDALE. LAT...LON 4491 9333 4496 9344 4504 9334 4492 9321 TIME...MOT...LOC 0133Z 220DEG 22KT 4497 9334 $$
369 WWUS53 KMPX 110143 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 843 PM CDT TUE MAY 10 2011 MNC053-110153- /O.EXP.KMPX.TO.W.0009.000000T0000Z-110511T0145Z/ HENNEPIN MN- 843 PM CDT TUE MAY 10 2011 ...THE TORNADO WARNING FOR EAST CENTRAL HENNEPIN COUNTY WILL EXPIRE AT 845 PM CDT... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND NO LONGER APPEARS TORNADIC. LAT...LON 4491 9333 4496 9344 4504 9334 4492 9321 TIME...MOT...LOC 0143Z 220DEG 22KT 4501 9328 $$
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, 7:43 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Hennepin, Isanti, Mille Lacs, Sherburne, Wright | 62 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, 8:27 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
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.