Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 133, NWS Twin Cities, MN

June 10, 20124 counties in Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 10, 2012, 7:54 PM CDT for 4 counties in Minnesota. It was in force for 36 min. 2 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: Jun 10, 2012, 7:54 PM CDT (00:54 UTC)
Expired: Jun 10, 2012, 8:30 PM CDT
In force: 36 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Anoka County, MN, Chisago County, MN, Hennepin County, MN, Isanti County, MN

The radar

The Minneapolis radar (KMPX), 58 km from the middle of the area, began a volume at 00:55 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
Jun 10, 8:07 PM CDT	TSTM WND DMG	5 N St Francis, MN	AT THE INTERSECTION OF HIGHWAY 47 AND COUNTY ROAD 53, FOUR 5 INCH BRANCHES DOWN.
Jun 10, 8:15 PM CDT	TSTM WND DMG	Dayton, MN	POWER LINE AND TREE DOWN ON THE ROAD AT FERNBROOK LANE AND 129TH AVE.

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
Jun 10, 3:03 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 0.9 hours before the alert went out and 59 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: 282 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 2269 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 178 m²/s²
0-3 km storm-relative helicity: 273 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.2

Open this sounding in Storm Lab

The text

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

166 
WUUS53 KMPX 110054
SVRMPX
MNC003-025-053-059-110130-
/O.NEW.KMPX.SV.W.0133.120611T0054Z-120611T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
754 PM CDT SUN JUN 10 2012

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ANOKA COUNTY IN EAST CENTRAL MINNESOTA...
  NORTHWESTERN CHISAGO COUNTY IN EAST CENTRAL MINNESOTA...
  NORTHERN HENNEPIN COUNTY IN EAST CENTRAL MINNESOTA...
  ISANTI COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 830 PM CDT

* AT 751 PM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...
  CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS OF 60
  MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 6 MILES
  WEST OF ISANTI TO PLYMOUTH...AND MOVING NORTHEAST AT 35 MPH.

LOCATIONS IN THE WARNING INCLUDE...
  CAMBRIDGE...
  MAPLE GROVE...
  RAMSEY...
  DAYTON...
  ROGERS...
  CORCORAN...
  ST FRANCIS...
  ANOKA...
  CHAMPLIN...
  OSSEO...
  BROOKLYN CENTER...
  ANDOVER...
  BROOKLYN PARK...
  CEDAR...

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.

&&

LAT...LON 4507 9326 4508 9364 4522 9358 4522 9353
      4536 9352 4563 9340 4574 9307 4574 9296
TIME...MOT...LOC 0054Z 226DEG 30KT 4550 9335 4505 9345
WIND...HAIL 60MPH 1.00IN

$$

JPC

1 follow-up statement

919 
WWUS53 KMPX 110116
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
816 PM CDT SUN JUN 10 2012

MNC003-025-053-059-110130-
/O.CON.KMPX.SV.W.0133.000000T0000Z-120611T0130Z/
ANOKA MN-CHISAGO MN-HENNEPIN MN-ISANTI MN-
816 PM CDT SUN JUN 10 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR ISANTI...
NORTHERN HENNEPIN...NORTHWESTERN CHISAGO AND WESTERN ANOKA COUNTIES
UNTIL 830 PM CDT...

AT 814 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS OF 60 MPH. 
THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM STANCHFIELD TO
BROOKLYN PARK...MOVING NORTHEAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  SPRING LAKE PARK...OAK PARK...EAST BETHEL AND HAM LAKE.

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 4507 9326 4508 9364 4522 9358 4522 9353
      4536 9352 4563 9340 4574 9307 4574 9296
TIME...MOT...LOC 0116Z 227DEG 30KT 4568 9312 4513 9330
WIND...HAIL 60MPH <.75IN

$$

JPC

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 10, 7:07 PM CDT	Special Weather Statement	MPX	Le Sueur, Nicollet, Scott, Sibley	53 min
Jun 10, 7:35 PM CDT	Special Weather Statement	MPX	Anoka, Chisago, Hennepin, Isanti, Kanabec, Ramsey	55 min
Jun 10, 7:35 PM CDT	Severe Thunderstorm Warning	MPX	Blue Earth, Le Sueur, Nicollet	40 min
Jun 10, 7:41 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Hennepin, Scott	49 min
Jun 10, 7:55 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Nicollet, Scott, Sibley	50 min
Jun 10, 7:59 PM CDT	Severe Thunderstorm Warning	MPX	Carver, McLeod, Wright	46 min
Jun 10, 8:18 PM CDT	Tornado Warning	MPX	Carver, Le Sueur, Scott, Sibley	42 min
Jun 10, 8:29 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Scott, Steele	45 min
Jun 10, 8:32 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Chisago, Hennepin, Isanti, Ramsey, Washington	58 min
Jun 10, 8:39 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Sibley	36 min
Jun 10, 8:42 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Rice	63 min
Jun 10, 8:48 PM CDT	Severe Thunderstorm Warning	MPX	Freeborn, Steele, Waseca	36 min
Jun 10, 8:50 PM CDT	Special Weather Statement	MPX	Isanti	40 min
Jun 10, 9:29 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Chisago, Isanti, Washington	61 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.