Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 172, NWS Twin Cities, MN

June 17, 20126 counties in Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 17, 2012, 9:50 PM CDT for 6 counties in Minnesota. It was in force for 40 min. 9 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 17, 2012, 9:50 PM CDT (02:50 UTC)
Expired: Jun 17, 2012, 10:30 PM CDT
In force: 40 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 65.0 mph

Counties Carver County, MN, Hennepin County, MN, McLeod County, MN, Meeker County, MN, Sibley County, MN, Wright County, MN

The radar

The Minneapolis radar (KMPX), 37 km from the middle of the area, began a volume at 02:53 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 17, 10:00 PM CDT	TSTM WND DMG	Stewart, MN	POWER OUTAGE TO A FEW HOMES.
Jun 17, 10:20 PM CDT	TSTM WND GST 72	Lester Prairie, MN
Jun 17, 10:25 PM CDT	TSTM WND DMG	Glencoe, MN	TWENTY TO TWENTY FIVE INCH DIAMETER TREES FELLED.
Jun 17, 10:30 PM CDT	TSTM WND DMG	Lester Prairie, MN	TWENTY TO TWENTY FIVE INCH DIAMETER TREES TOPPLED.
Jun 17, 10:34 PM CDT	TSTM WND DMG	2 Nw New Germany, MN	EMPTY GRAIN BIN PUSHED IN AND PARTIALLY REMOVED FROM FOUNDATION. DAMAGE OCCURRED ON YALE AVE. DAMAGE TIME ESTIMATED FROM RADAR.
Jun 17, 10:34 PM CDT	TSTM WND DMG	3 Nw New Germany, MN	TWO THREE FOOT DIAMETER TREES TORN FROM THE GROUND. RESIDENTS HEARD A LARGE ROAR BEFORE DAMAGED OCCURRED ON YALE AVE. DAMAGE TIME ESTIMATED FROM RADAR.
Jun 17, 10:35 PM CDT	TSTM WND DMG	2 Ne New Germany, MN	FIVE SHEDS DAMAGED..WITH TWO DESTROYED. THREE CORN BINS DAMAGED...ONE TURNED OVER...ONE WRAPPED AROUND TREE...BOTH UNFILLED. PARTIALLY FILLED THIRD BIN DAMAGED BY ONE OF OTHER BINS. TIME OF DAMAGE ESTIMATED BY RADAR SINGATURE.
Jun 17, 10:36 PM CDT	TSTM WND DMG	3 Ne New Germany, MN	HOUSE LOST FIFTY PERCENT OF ITS ROOF. DAMAGE OCCURRED ON COUNTY ROAD 21. TIME ESTIMATED BY RADAR.
Jun 17, 10:40 PM CDT	TSTM WND DMG	Lester Prairie, MN	POWER OUT THROUGH MUCH OF CITY.

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 17, 3:45 PM CDT	Tornado Watch	SPC	6 hr
Jun 17, 7:57 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 2.8 hours before the alert went out and 34 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: 1837 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 492 m²/s²
0-3 km storm-relative helicity: 747 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

Open this sounding in Storm Lab

The text

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

043 
WUUS53 KMPX 180250
SVRMPX
MNC019-053-085-093-143-171-180330-
/O.NEW.KMPX.SV.W.0172.120618T0250Z-120618T0330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
950 PM CDT SUN JUN 17 2012

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CARVER COUNTY IN EAST CENTRAL MINNESOTA...
  WEST CENTRAL HENNEPIN COUNTY IN EAST CENTRAL MINNESOTA...
  MCLEOD COUNTY IN CENTRAL MINNESOTA...
  SOUTHEASTERN MEEKER COUNTY IN CENTRAL MINNESOTA...
  NORTHEASTERN SIBLEY COUNTY IN CENTRAL MINNESOTA...
  SOUTHWESTERN WRIGHT COUNTY IN CENTRAL MINNESOTA...

* UNTIL 1030 PM CDT

* AT 948 PM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...
  CAPABLE OF PRODUCING DAMAGING WINDS OF 65 MPH. THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM DASSEL TO HUTCHINSON TO BUFFALO
  LAKE...AND MOVING EAST AT 45 MPH.  PENNY SIZE HAIL MAY ALSO
  ACCOMPANY THESE DAMAGING WINDS.

LOCATIONS IN THE WARNING INCLUDE...
  HUTCHINSON...
  DARWIN...
  DASSEL...
  STEWART...
  COKATO...
  SILVER LAKE...
  BISCAY...
  BROWNTON...
  HOWARD LAKE...
  WINSTED...
  LESTER PRAIRIE...
  GLENCOE...
  NEW AUBURN...
  NEW GERMANY...

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT SUNDAY EVENING
FOR SOUTHWESTERN MINNESOTA.

&&

LAT...LON 4472 9450 4490 9451 4493 9445 4516 9444
      4499 9359 4477 9360 4474 9363 4473 9362
      4463 9379 4463 9384 4460 9389 4455 9392
TIME...MOT...LOC 0250Z 288DEG 33KT 4511 9430 4490 9432
          4477 9454
WIND...HAIL 65MPH 0.75IN

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 7:06 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Pope, Swift	39 min
Jun 17, 7:12 PM CDT	Tornado Warning	MPX	Chippewa, Swift	48 min
Jun 17, 7:15 PM CDT	Tornado Warning	MPX	Pope, Swift	26 min
Jun 17, 7:21 PM CDT	Severe Thunderstorm Warning	MPX	Lac qui Parle, Pope, Stevens, Swift	39 min
Jun 17, 7:53 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Lac qui Parle, Pope, Stevens, Swift	67 min
Jun 17, 7:58 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Kandiyohi, Swift	47 min
Jun 17, 8:06 PM CDT	Tornado Warning	MPX	Chippewa, Kandiyohi, Swift	24 min
Jun 17, 8:25 PM CDT	Tornado Warning	MPX	Chippewa, Lac qui Parle, Swift	35 min
Jun 17, 8:33 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Pope, Stearns, Swift	42 min
Jun 17, 8:36 PM CDT	Areal Flood Advisory	MPX	Chippewa, Kandiyohi, Lac qui Parle, Pope, Renville, Stearns and 2 more	3 hr
Jun 17, 8:45 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Kandiyohi, Lac qui Parle, Renville, Swift, Yellow Medicine	45 min
Jun 17, 8:56 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker, Sherburne, Stearns, Wright	49 min
Jun 17, 9:06 PM CDT	Tornado Warning	MPX	Kandiyohi, McLeod, Meeker	24 min
Jun 17, 9:25 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Kandiyohi, Meeker, Renville	65 min
Jun 17, 9:25 PM CDT	Tornado Warning	MPX	Carver, McLeod, Meeker, Wright	35 min
Jun 17, 9:28 PM CDT	Severe Thunderstorm Warning	MPX	Lac qui Parle, Yellow Medicine	47 min
Jun 17, 9:45 PM CDT	Severe Thunderstorm Warning	MPX	Hennepin, Meeker, Sherburne, Stearns, Wright	45 min
Jun 17, 10:08 PM CDT	Areal Flood Advisory	MPX	Anoka, Carver, Dakota, Hennepin, McLeod, Meeker and 6 more	3 hr
Jun 17, 10:24 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Hennepin, Le Sueur, McLeod, Scott, Sibley and 1 more	51 min
Jun 17, 10:24 PM CDT	Tornado Warning	MPX	Renville	36 min
Jun 17, 10:30 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker, Renville	30 min
Jun 17, 10:41 PM CDT	Severe Thunderstorm Warning	MPX	McLeod, Meeker, Renville, Sibley	49 min
Jun 17, 10:50 PM CDT	Severe Thunderstorm Warning	MPX	Chippewa, Kandiyohi	40 min
Jun 17, 10:57 PM CDT	Severe Thunderstorm Warning	MPX	Kandiyohi, Meeker, Renville	33 min
Jun 17, 11:10 PM CDT	Special Weather Statement	MPX	Dakota, Ramsey, Scott	50 min
Jun 17, 11:22 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Nicollet, Rice, Scott, Sibley	38 min
Jun 17, 11:28 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Goodhue, Scott, Washington	32 min
Jun 17, 11:32 PM CDT	Severe Thunderstorm Warning	MPX	McLeod, Renville	43 min
Jun 17, 11:44 PM CDT	Flash Flood Warning	MPX	Dakota, Goodhue, Rice	6 hr
Jun 17, 11:50 PM CDT	Tornado Warning	MPX	Le Sueur	25 min
Jun 17, 11:53 PM CDT	Special Weather Statement	MPX	Meeker	52 min
Jun 17, 11:58 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Le Sueur, Rice	47 min
Jun 18, 12:20 AM CDT	Special Weather Statement	MPX	McLeod	40 min
Jun 18, 12:25 AM CDT	Special Weather Statement	MPX	Scott	50 min
Jun 18, 12:26 AM CDT	Special Weather Statement	MPX	Goodhue	49 min
Jun 18, 12:45 AM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Rice	45 min
Jun 18, 12:46 AM CDT	Flash Flood Warning	MPX	Dakota, Le Sueur, Rice, Scott	4 hr
Jun 18, 1:05 AM CDT	Severe Thunderstorm Warning	MPX	Dakota, Rice	40 min
Jun 18, 1:27 AM CDT	Severe Thunderstorm Warning	MPX	Goodhue, Rice	33 min
Jun 18, 1:30 AM CDT	Special Weather Statement	MPX	Scott	30 min
Jun 18, 5:33 AM CDT	Areal Flood Warning	MPX	Dakota, Goodhue, Rice	6 hr
Jun 18, 11:17 AM CDT	River Flood Warning	MPX	Carver	10 days
Jun 18, 11:33 AM CDT	Areal Flood Warning	MPX	Dakota, Goodhue	18 hr
Jun 18, 4:31 PM CDT	Flash Flood Watch	MPX	Anoka, Benton, Carver, Chippewa, Chisago, Dakota and 24 more	56 hr

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.