Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 11, NWS Twin Cities, MN

May 1, 2012Chippewa County, Lac qui Parle County, Yellow Medicine County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at May 1, 2012, 5:08 PM CDT for Chippewa County, Lac qui Parle County, Yellow Medicine County, Minnesota. It was in force for 67 min. 1 report 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 1, 2012, 5:08 PM CDT (22:08 UTC)
Expired: May 1, 2012, 6:15 PM CDT
In force: 67 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Chippewa County, MN, Lac qui Parle County, MN, Yellow Medicine County, MN

The radar

The Minneapolis radar (KMPX), 169 km from the middle of the area, began a volume at 22:08 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 1, 5:30 PM CDT	HAIL 1	10 N Montevideo, 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 1, 2:59 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.1 hours before the alert went out and 166 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1291 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 163 m²/s²
0-3 km storm-relative helicity: 196 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

191 
WUUS53 KMPX 012208
SVRMPX
MNC023-073-173-012315-
/O.NEW.KMPX.SV.W.0011.120501T2208Z-120501T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
508 PM CDT TUE MAY 1 2012

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL CHIPPEWA COUNTY IN WEST CENTRAL MINNESOTA...
  SOUTHEASTERN LAC QUI PARLE COUNTY IN WEST CENTRAL MINNESOTA...
  NORTH CENTRAL YELLOW MEDICINE COUNTY IN WEST CENTRAL MINNESOTA...

* UNTIL 615 PM CDT

* AT 504 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
  PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS OF 60 MPH. THIS
  STORM WAS LOCATED 6 MILES NORTH OF BOYD...OR ABOUT 9 MILES WEST OF 
  MONTEVIDEO...AND MOVING NORTHEAST AT 25 MPH.  ONE INCH HAIL WAS
  REPORTED AT 501 PM 6 MILES EAST OF DAWSON FROM THIS STORM.
  

LOCATIONS IN THE WARNING INCLUDE...
  MONTEVIDEO...
  BOYD...
  CLARKFIELD...
  PROVIDENCE...
  SPRING CREEK...
  ST LEO...
  WATSON...
  MAYNARD...
  GLUEK...
  CLARA CITY...

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.

SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE
WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE
SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED.

&&

LAT...LON 4515 9561 4498 9527 4489 9549 4466 9593
      4483 9632
TIME...MOT...LOC 2208Z 242DEG 23KT 4495 9587
WIND...HAIL 60MPH 1.00IN

$$

3 follow-up statements

483 
WWUS53 KMPX 012228
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
528 PM CDT TUE MAY 1 2012

MNC023-073-173-012315-
/O.CON.KMPX.SV.W.0011.000000T0000Z-120501T2315Z/
LAC QUI PARLE MN-CHIPPEWA MN-YELLOW MEDICINE MN-
528 PM CDT TUE MAY 1 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTH CENTRAL
YELLOW MEDICINE...CHIPPEWA AND SOUTHEASTERN LAC QUI PARLE COUNTIES IN
WEST CENTRAL MINNESOTA UNTIL 615 PM CDT...

AT 526 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS STORM WAS
LOCATED NEAR MONTEVIDEO...MOVING NORTHEAST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
  MAYNARD...GLUEK...CLARA CITY AND ASBURY.

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.

THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS!

&&

LAT...LON 4490 9616 4515 9561 4498 9527 4489 9549
      4466 9593
TIME...MOT...LOC 2228Z 242DEG 23KT 4501 9571
WIND...HAIL <50MPH 1.00IN

$$

723 
WWUS53 KMPX 012252
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
552 PM CDT TUE MAY 1 2012

MNC023-073-173-012315-
/O.CON.KMPX.SV.W.0011.000000T0000Z-120501T2315Z/
LAC QUI PARLE MN-CHIPPEWA MN-YELLOW MEDICINE MN-
552 PM CDT TUE MAY 1 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTH CENTRAL
YELLOW MEDICINE...CHIPPEWA AND SOUTHEASTERN LAC QUI PARLE COUNTIES IN
WEST CENTRAL MINNESOTA UNTIL 615 PM CDT...

AT 547 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS STORM WAS
LOCATED 6 MILES SOUTHEAST OF MONTEVIDEO...MOVING NORTHEAST AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
  MAYNARD...GLUEK...CLARA CITY AND ASBURY.

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.

THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS!

&&

LAT...LON 4490 9594 4512 9555 4498 9527 4489 9549
      4470 9586
TIME...MOT...LOC 2252Z 242DEG 23KT 4489 9562
WIND...HAIL <50MPH 1.00IN

$$

967 
WWUS53 KMPX 012309
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
609 PM CDT TUE MAY 1 2012

MNC023-073-173-012324-
/O.EXP.KMPX.SV.W.0011.000000T0000Z-120501T2315Z/
LAC QUI PARLE MN-CHIPPEWA MN-YELLOW MEDICINE MN-
609 PM CDT TUE MAY 1 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL YELLOW
MEDICINE...CHIPPEWA AND SOUTHEASTERN LAC QUI PARLE COUNTIES IN WEST
CENTRAL MINNESOTA WILL EXPIRE AT 615 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY...HOWEVER SMALL HAIL IS STILL POSSIBLE WITH THIS
THUNDERSTORM.

LAT...LON 4490 9594 4512 9555 4498 9527 4489 9549
      4470 9586
TIME...MOT...LOC 2309Z 242DEG 23KT 4494 9548

$$

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 1, 4:41 AM CDT	Special Weather Statement	MPX	Douglas, Morrison, Pope, Stevens, Todd	79 min
May 1, 4:12 PM CDT	Severe Thunderstorm Warning	MPX	Pope, Stearns	33 min
May 1, 4:40 PM CDT	Severe Thunderstorm Warning	MPX	Sherburne, Stearns, Wright	35 min
May 1, 4:43 PM CDT	Severe Thunderstorm Warning	MPX	Pope, Stearns	47 min
May 1, 4:46 PM CDT	Tornado Warning	MPX	Pope, Stearns	44 min
May 1, 5:07 PM CDT	Tornado Warning	MPX	Sherburne, Stearns, Wright	38 min
May 1, 5:09 PM CDT	Tornado Warning	MPX	Stearns	36 min
May 1, 5:17 PM CDT	Severe Thunderstorm Warning	MPX	Redwood, Yellow Medicine	32 min
May 1, 5:23 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Morrison, Stearns	37 min
May 1, 5:38 PM CDT	Tornado Warning	MPX	Sherburne	37 min
May 1, 5:44 PM CDT	Tornado Warning	MPX	Benton, Sherburne, Stearns	46 min
May 1, 6:08 PM CDT	Severe Thunderstorm Warning	MPX	Redwood	52 min
May 1, 6:14 PM CDT	Severe Thunderstorm Warning	MPX	Isanti, Sherburne	46 min
May 1, 6:25 PM CDT	Tornado Warning	MPX	Benton, Sherburne	35 min
May 1, 6:43 PM CDT	Severe Thunderstorm Warning	MPX	Brown, Redwood	62 min
May 1, 6:56 PM CDT	Severe Thunderstorm Warning	MPX	Benton, Mille Lacs, Sherburne	34 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2012 Every 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.