Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 93, NWS Twin Cities, MN

May 26, 2012Dakota County, Ramsey County, Washington County, Minnesota; Saint Croix County, Wisconsin

NWS Twin Cities, MN issued this severe thunderstorm warning at May 26, 2012, 3:33 PM CDT for Dakota County, Ramsey County, Washington County, Minnesota; Saint Croix County, Wisconsin. It was in force for 57 min. 6 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 26, 2012, 3:33 PM CDT (20:33 UTC)
Expired: May 26, 2012, 4:30 PM CDT
In force: 57 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

Counties Dakota County, MN, Ramsey County, MN, Washington County, MN, Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 43 km from the middle of the area, began a volume at 20:34 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 26, 3:40 PM CDT	HAIL 1.5	2 Wnw St Paul Park, MN
May 26, 3:41 PM CDT	HAIL 1.5	Inver Grove Heights, MN
May 26, 3:47 PM CDT	HAIL 1.75	2 Ne Newport, MN	PUBLIC REPORTED GOLF BALL SIZED HAIL NEAR INTERSECTION OF BAILEY RD AND WOODLANE IN WOODBURY.
May 26, 3:50 PM CDT	HAIL 0.5	Woodbury, MN	VAIRED BETWEEN 1/2 AND 1 1/2 INCH LASTED 20 MINUTES
May 26, 3:50 PM CDT	HAIL 1.5	Woodbury, MN	VARIED BETWEEN 1/2 AND 1 1/2 INCH LASTED 20 MINUTES
May 26, 4:00 PM CDT	HAIL 1	5 Ssw Hudson, MN	1 INCH HAIL REPORTED AT AFTON MARINA.

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, 8.6 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.

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: 858 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 268 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.

830 
WUUS53 KMPX 262033
SVRMPX
MNC037-123-163-WIC109-262130-
/O.NEW.KMPX.SV.W.0093.120526T2033Z-120526T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
333 PM CDT SAT MAY 26 2012

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL DAKOTA COUNTY IN EAST CENTRAL MINNESOTA...
  SOUTHEASTERN RAMSEY COUNTY IN EAST CENTRAL MINNESOTA...
  CENTRAL WASHINGTON COUNTY IN EAST CENTRAL MINNESOTA...
  WEST CENTRAL ST. CROIX COUNTY IN WEST CENTRAL WISCONSIN...

* UNTIL 430 PM CDT

* AT 329 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
  PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR EAGAN...OR
  ABOUT 9 MILES SOUTH OF ST PAUL...AND MOVING NORTHEAST AT 30 MPH.

LOCATIONS IN THE WARNING INCLUDE...
  MENDOTA HEIGHTS...
  EAGAN...
  INVER GROVE HEIGHTS...
  LILYDALE...
  WEST ST PAUL...
  ST PAUL PARK...
  SOUTH ST PAUL...
  NEWPORT...
  MAPLEWOOD...
  WOODBURY...
  NORTH ST PAUL...
  OAKDALE...
  LAKE ELMO...
  MAHTOMEDI...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.

&&

LAT...LON 4476 9311 4483 9323 4484 9320 4486 9320
      4489 9319 4518 9280 4508 9234
TIME...MOT...LOC 2033Z 232DEG 28KT 4484 9309
WIND...HAIL <50MPH 1.00IN

$$

JPC

3 follow-up statements

193 
WWUS53 KMPX 262050
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
350 PM CDT SAT MAY 26 2012

MNC037-123-262105-
/O.CAN.KMPX.SV.W.0093.000000T0000Z-120526T2130Z/
DAKOTA MN-RAMSEY MN-
350 PM CDT SAT MAY 26 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN RAMSEY AND NORTH
CENTRAL DAKOTA COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 4508 9234 4480 9301 4488 9301 4489 9298
      4505 9298 4518 9280
TIME...MOT...LOC 2050Z 246DEG 30KT 4490 9289

$$

MNC163-WIC109-262130-
/O.CON.KMPX.SV.W.0093.000000T0000Z-120526T2130Z/
WASHINGTON MN-ST. CROIX WI-
350 PM CDT SAT MAY 26 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WEST CENTRAL
ST. CROIX AND CENTRAL WASHINGTON COUNTIES UNTIL 430 PM CDT...

AT 347 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL.  THIS STORM
WAS LOCATED NEAR WOODBURY...OR 10 MILES SOUTHEAST OF ST PAUL...MOVING
NORTHEAST AT 35 MPH.

SEVERAL REPORTS OF ONE TO ONE AND HALF INCH DIAMETER HAIL HAVE COME 
FROM THIS STORM.

LOCATIONS IMPACTED INCLUDE...
  MAHTOMEDI...WILLERNIE...LAKE ELMO...LAKELAND...STILLWATER...
  BAYPORT...HUDSON...BURKHARDT...SOMERSET...HOULTON...AFTON...OAK
  PARK HEIGHTS...NORTH HUDSON AND BOARDMAN.

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 4508 9234 4480 9301 4488 9301 4489 9298
      4505 9298 4518 9280
TIME...MOT...LOC 2050Z 246DEG 30KT 4490 9289
WIND...HAIL <50MPH 1.25IN

$$

JPC

199 
WWUS53 KMPX 262108
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
408 PM CDT SAT MAY 26 2012

MNC163-262123-
/O.CAN.KMPX.SV.W.0093.000000T0000Z-120526T2130Z/
WASHINGTON MN-
408 PM CDT SAT MAY 26 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL WASHINGTON COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 4508 9234 4491 9276 4495 9275 4497 9277
      4501 9277 4503 9276 4505 9280 4506 9279
TIME...MOT...LOC 2108Z 246DEG 30KT 4496 9267

$$

WIC109-262130-
/O.CON.KMPX.SV.W.0093.000000T0000Z-120526T2130Z/
ST. CROIX WI-
408 PM CDT SAT MAY 26 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WEST CENTRAL
ST. CROIX COUNTY UNTIL 430 PM CDT...

AT 406 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL.  THIS STORM
WAS LOCATED NEAR HUDSON...OR 8 MILES NORTHWEST OF RIVER FALLS...
MOVING NORTHEAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  BURKHARDT...HOULTON AND BOARDMAN.

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 4508 9234 4491 9276 4495 9275 4497 9277
      4501 9277 4503 9276 4505 9280 4506 9279
TIME...MOT...LOC 2108Z 246DEG 30KT 4496 9267
WIND...HAIL <50MPH 1.25IN

$$

JPC

100 
WWUS53 KMPX 262123
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
423 PM CDT SAT MAY 26 2012

WIC109-262138-
/O.EXP.KMPX.SV.W.0093.000000T0000Z-120526T2130Z/
ST. CROIX WI-
423 PM CDT SAT MAY 26 2012

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL ST. CROIX COUNTY
WILL EXPIRE AT 430 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF
THE WARNED AREA.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN THE TWIN CITIES.

LAT...LON 4508 9234 4491 9276 4495 9275 4497 9277
      4501 9277 4503 9276 4505 9280 4506 9279
TIME...MOT...LOC 2123Z 246DEG 30KT 4501 9251

$$

JPC

The office that day

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

Issued	Product	Office	Counties	Lasted
May 26, 2:34 AM CDT	Special Weather Statement	MPX	Martin	56 min
May 26, 3:44 AM CDT	Special Weather Statement	MPX	Blue Earth, Faribault, Freeborn, Martin, Rice, Steele and 1 more	61 min
May 26, 7:14 AM CDT	Special Weather Statement	MPX	Redwood	46 min
May 26, 7:51 AM CDT	Severe Thunderstorm Warning	MPX	Redwood	54 min
May 26, 8:26 AM CDT	Special Weather Statement	MPX	Brown, McLeod, Nicollet, Renville, Sibley	64 min
May 26, 9:07 AM CDT	Special Weather Statement	MPX	Watonwan	23 min
May 26, 9:33 AM CDT	Special Weather Statement	MPX	Blue Earth, Nicollet, Watonwan	27 min
May 26, 10:07 AM CDT	Special Weather Statement	MPX	Blue Earth, Waseca	23 min
May 26, 10:34 AM CDT	Special Weather Statement	MPX	Steele, Waseca	56 min
May 26, 11:34 AM CDT	Special Weather Statement	MPX	Freeborn, Steele	26 min
May 26, 11:36 AM CDT	Severe Thunderstorm Warning	MPX	Steele	8 min
May 26, 11:47 AM CDT	Special Weather Statement	MPX	Freeborn	28 min
May 26, 11:50 AM CDT	Special Weather Statement	MPX	Brown, McLeod, Nicollet, Sibley	55 min
May 26, 1:26 PM CDT	Special Weather Statement	MPX	Goodhue	34 min
May 26, 1:30 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue, Rice	45 min
May 26, 1:40 PM CDT	Special Weather Statement	MPX	Dakota	35 min
May 26, 2:15 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	60 min
May 26, 3:09 PM CDT	Special Weather Statement	MPX	Pierce	51 min
May 26, 3:19 PM CDT	Special Weather Statement	MPX	Pepin	41 min
May 26, 4:10 PM CDT	Severe Thunderstorm Warning	MPX	Dunn, Pierce, Saint Croix	65 min
May 26, 5:09 PM CDT	Severe Thunderstorm Warning	MPX	Dunn, Eau Claire, Pepin, Pierce	50 min
May 26, 5:51 PM CDT	Severe Thunderstorm Warning	MPX	Dunn, Eau Claire, Pepin	24 min
May 26, 6:14 PM CDT	Special Weather Statement	MPX	Eau Claire	46 min
May 26, 6:45 PM CDT	Special Weather Statement	MPX	Barron	60 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2012 Severe Thunderstorm Warnings in Wisconsin, 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.