Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 63, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at May 18, 2012, 5:28 PM CDT for 4 counties in Minnesota. It was in force for 23 min. 3 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 18, 2012, 5:28 PM CDT (22:28 UTC)
- Expired
- May 18, 2012, 5:51 PM CDT
- In force
- 23 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties McLeod County, MN, Meeker County, MN, Renville County, MN, Sibley County, MN
The radar
The Minneapolis radar (KMPX), 82 km from the middle of the area, began a volume at 22:28 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 18, 5:33 PM CDT | HAIL 0.5 | 6 Ssw Buffalo Lake, MN | ESTIMATED 50 TO 60 MPH WIND GUST...LATE REPORT. |
| May 18, 5:35 PM CDT | TSTM WND DMG | 6 S Buffalo Lake, MN | HALF DOZEN LARGE 6 TO 8 INCH DIAMETER BRANCHES. |
| May 18, 5:35 PM CDT | TSTM WND DMG | Buffalo Lake, MN | LARGE TREE DOWN IN DRIVEWAY. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 10.5 hours before the alert went out and 79 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
- 1992 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 154 m²/s²
- 0-3 km storm-relative helicity
- 274 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
108 WUUS53 KMPX 182228 SVRMPX MNC085-093-129-143-182315- /O.NEW.KMPX.SV.W.0063.120518T2228Z-120518T2315Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 528 PM CDT FRI MAY 18 2012 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN MCLEOD COUNTY IN CENTRAL MINNESOTA... SOUTH CENTRAL MEEKER COUNTY IN CENTRAL MINNESOTA... NORTHEASTERN RENVILLE COUNTY IN CENTRAL MINNESOTA... NORTHWESTERN SIBLEY COUNTY IN CENTRAL MINNESOTA... * UNTIL 615 PM CDT * AT 524 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF PRODUCING DAMAGING WINDS OF 60 MPH. THIS STORM WAS LOCATED NEAR BUFFALO LAKE...OR ABOUT 18 MILES EAST OF OLIVIA...AND MOVING NORTH AT 30 MPH. PENNY SIZE HAIL MAY ALSO ACCOMPANY THESE DAMAGING WINDS. LOCATIONS IN THE WARNING INCLUDE... HECTOR... BUFFALO LAKE... LAKESIDE... CORVUSO... CEDAR MILLS... PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR DAMAGING WINDS IN EXCESS OF 60 MPH AND HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. && LAT...LON 4499 9465 4493 9437 4462 9458 4468 9475 TIME...MOT...LOC 2228Z 201DEG 26KT 4471 9464 WIND...HAIL 60MPH 0.75IN $$ CLF
2 follow-up statements
497 WWUS53 KMPX 182247 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 547 PM CDT FRI MAY 18 2012 MNC143-182302- /O.CAN.KMPX.SV.W.0063.000000T0000Z-120518T2315Z/ SIBLEY MN- 547 PM CDT FRI MAY 18 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN SIBLEY COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. LAT...LON 4474 9452 4479 9468 4499 9465 4493 9437 TIME...MOT...LOC 2247Z 201DEG 26KT 4484 9457 $$ MNC085-093-129-182315- /O.CON.KMPX.SV.W.0063.000000T0000Z-120518T2315Z/ MCLEOD MN-MEEKER MN-RENVILLE MN- 547 PM CDT FRI MAY 18 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN RENVILLE...SOUTH CENTRAL MEEKER AND NORTHWESTERN MCLEOD COUNTIES UNTIL 615 PM CDT... AT 542 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS OF 60 MPH. THIS STORM WAS LOCATED NEAR LAKESIDE...OR 12 MILES SOUTHWEST OF HUTCHINSON...MOVING NORTH AT 30 MPH. LOCATIONS IMPACTED INCLUDE... CORVUSO AND CEDAR MILLS. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...LARGE HAIL...AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. && LAT...LON 4474 9452 4479 9468 4499 9465 4493 9437 TIME...MOT...LOC 2247Z 201DEG 26KT 4484 9457 WIND...HAIL 60MPH <.75IN $$ CLF
946 WWUS53 KMPX 182251 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 551 PM CDT FRI MAY 18 2012 MNC085-093-129-182306- /O.CAN.KMPX.SV.W.0063.000000T0000Z-120518T2315Z/ MCLEOD MN-MEEKER MN-RENVILLE MN- 551 PM CDT FRI MAY 18 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN RENVILLE...SOUTH CENTRAL MEEKER AND NORTHWESTERN MCLEOD COUNTIES IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. LAT...LON 4474 9452 4479 9468 4499 9465 4493 9437 TIME...MOT...LOC 2251Z 201DEG 26KT 4487 9455 $$ CLF
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 18, 3:52 AM CDT | Wind Advisory | MPX | Blue Earth, Brown, Chippewa, Faribault, Kandiyohi, Lac qui Parle and 10 more | 15 hr |
| May 18, 5:12 PM CDT | Special Weather Statement | MPX | Mille Lacs | 48 min |
| May 18, 5:24 PM CDT | Severe Thunderstorm Warning | MPX | Kanabec, Mille Lacs | 35 min |
| May 18, 5:37 PM CDT | Special Weather Statement | MPX | Benton | 38 min |
| May 18, 5:50 PM CDT | Special Weather Statement | MPX | Wright | 40 min |
| May 18, 5:57 PM CDT | Special Weather Statement | MPX | Morrison | 48 min |
| May 18, 6:22 PM CDT | Special Weather Statement | MPX | Sherburne, Wright | 53 min |
| May 18, 6:30 PM CDT | Special Weather Statement | MPX | Mille Lacs | 45 min |
| May 18, 6:57 PM CDT | Special Weather Statement | MPX | Brown | 48 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2012Every severe thunderstorm warning in 2012
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.