Alert archive / Minnesota / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 87, NWS Twin Cities, MN

June 21, 2013Hennepin County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 21, 2013, 7:13 PM CDT for Hennepin County, Minnesota. It was in force for 62 min. 26 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 21, 2013, 7:13 PM CDT (00:13 UTC)
Expired: Jun 21, 2013, 8:15 PM CDT
In force: 62 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Hennepin County, MN

The radar

The Minneapolis radar (KMPX), 23 km from the middle of the area, began a volume at 00:16 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 21, 7:32 PM CDT	TSTM WND DMG	Medina, MN	A LOT OF LARGE TREE DAMAGE...2-3 FOOT DIAMETER TREES DOWN WITH PROPERTY DAMAGE
Jun 21, 7:35 PM CDT	TSTM WND DMG	1 Ene Maple Plain, MN	25 INCH DIAMETER TREE DOWN.
Jun 21, 7:35 PM CDT	TSTM WND DMG	2 S Loretto, MN	20 INCH DIAMETER TREE DOWN. POWER LINES DOWN.
Jun 21, 7:35 PM CDT	TSTM WND DMG	3 Nnw Excelsior, MN	TWO 25 INCH DIAMETER TREES DOWN IN LONG LAKE ALONG WATERTOWN ROAD...ONE NEAR CYGNET PLACE AND THE OTHER NEAR BROWN ROAD N.
Jun 21, 7:35 PM CDT	TSTM WND DMG	Loretto, MN	10 INCH TO 15 INCH DIAMETER TREES DOWN NEAR BAKER PARK.
Jun 21, 7:35 PM CDT	TSTM WND GST 52	Medina, MN	MEASURED AT HENNEPIN COUNTY EMERGENCY MANAGEMENT CENTER
Jun 21, 7:35 PM CDT	TSTM WND GST 57	Medina, MN	WIND GUST ORIGINALLY REPORTED AS 52 ACTUAL WAS 57 MPH AT HENNEPIN COUNTY EMERGENCY MANAGEMENT CENTER
Jun 21, 7:39 PM CDT	TSTM WND GST 52	Medina, MN	MEASURED AT HENNEPIN COUNTY EM CENTER.
Jun 21, 7:40 PM CDT	TSTM WND DMG	1 Wsw Plymouth, MN	28 IN DIAMETER TREE COVERING TIMBER CREST DR AND CREST DRIVE N.
Jun 21, 7:40 PM CDT	TSTM WND DMG	2 S Maple Grove, MN	28 INCH TREE DOWN BLOCKING TIMBER CREST DRIVE JUST SOUTH OF CREST DR N.
Jun 21, 7:40 PM CDT	TSTM WND DMG	Medina, MN	10 INCH AND 30 INCH TREES DOWN.
Jun 21, 7:40 PM CDT	TSTM WND GST 50	3 Wsw Maple Grove, MN	MEASURED BY ROOF TOP INSPEED SETUP.
Jun 21, 7:45 PM CDT	TSTM WND DMG	2 Nw Medicine Lake, MN	MULTIPLE 2 FOOT TO 3 FOOT DIAMETER TREES AND POWER LINES DOWN WEST SIDE OF MEDICINE LAKE.
Jun 21, 7:45 PM CDT	TSTM WND DMG	3 Ne Plymouth, MN	24 INCH TREE DOWN
Jun 21, 7:45 PM CDT	TSTM WND DMG	Crystal, MN	SHED AND GAZEBO BLOWN
Jun 21, 7:45 PM CDT	TSTM WND DMG	Maple Grove, MN	16 IN UPROOTED TREE AT JUNO LANE AND 65TH PLACE N
Jun 21, 7:45 PM CDT	TSTM WND DMG	Plymouth, MN	NEW POWER OUTAGES IN PLYMOUTH
Jun 21, 7:50 PM CDT	TSTM WND DMG	1 E Robbinsdale, MN	40FT TREE DOWN
Jun 21, 7:53 PM CDT	TSTM WND GST 69	Crystal, MN	GUST AT THE CRYSTAL AIRPORT
Jun 21, 7:55 PM CDT	TSTM WND DMG	1 W Crystal, MN	12 INCH TREE DOWN.
Jun 21, 7:55 PM CDT	TSTM WND DMG	3 Ene Minneapolis, MN	SCATTERED TREES DOWN ON POWER LINES AT THE U OF M CAMPUS.
Jun 21, 8:00 PM CDT	TSTM WND DMG	1 N St Louis Park, MN	18 INCH TREE DOWN.
Jun 21, 8:00 PM CDT	TSTM WND DMG	3 Nnw Minneapolis, MN	SEVERAL 12 INCH BRANCHES DOWN. SOME ON HOUSE.
Jun 21, 8:00 PM CDT	TSTM WND DMG	5 Sw Minneapolis, MN	20 INCH TREE DOWN 52ND AND DREW AVE S.
Jun 21, 8:02 PM CDT	TSTM WND GST 61	Minneapolis, MN	AT THE MSP AIRPORT
Jun 21, 8:03 PM CDT	TSTM WND GST 61	Minneapolis, MN	AT THE MSP AIRPORT

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 21, 5:16 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 0.2 hours before the alert went out and 24 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: 971 J/kg
Mixed-layer CIN: -76 J/kg
Mixed-layer LCL: 973 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 16 m²/s²
0-3 km storm-relative helicity: 68 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 2.8

Open this sounding in Storm Lab

The text

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

865 
WUUS53 KMPX 220013
SVRMPX
MNC053-220115-
/O.NEW.KMPX.SV.W.0087.130622T0013Z-130622T0115Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
713 PM CDT FRI JUN 21 2013

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HENNEPIN COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 815 PM CDT

* AT 711 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 7 MILES NORTHWEST OF BUFFALO TO 7 MILES NORTHWEST OF
  WACONIA...AND MOVING EAST AT 40 MPH.

  HAZARD...60 MPH WIND GUSTS AND PENNY SIZE HAIL.

  SOURCE...RADAR INDICATED.

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.

* LOCATIONS IMPACTED INCLUDE...
  MINNEAPOLIS...EXCELSIOR...MINNETONKA...THE LAKE MINNETONKA AREA...
  EDEN PRAIRIE...PLYMOUTH...MAPLE GROVE...ST LOUIS PARK...
  BLOOMINGTON...BROOKLYN PARK...TWIN CITIES AIRPORT...ST
  BONIFACIUS...MINNETRISTA...INDEPENDENCE...MOUND...MAPLE PLAIN...
  GREENFIELD...ORONO...LORETTO AND SHOREWOOD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

IF ON OR NEAR LAKE MINNETONKA OR OTHER NEARBY LAKES...GET AWAY FROM 
THE WATER AND MOVE TO SHELTER. IF YOU CAN HEAR THUNDER...YOU ARE 
CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. BOATS CAN BE SWAMPED BY 
LARGE CAPSIZING WAVES...EVEN ON SMALL BODIES OF WATER. MOVE INTO 
DOCK AND SEEK SAFE SHELTER NOW.

&&

LAT...LON 4525 9352 4515 9331 4504 9328 4503 9321
      4491 9320 4489 9317 4481 9326 4486 9353
      4489 9353 4490 9377 4508 9377 4508 9374
      4513 9370 4517 9363 4520 9364 4522 9353
TIME...MOT...LOC 0013Z 273DEG 34KT 4522 9396 4492 9385

HAIL...0.75IN
WIND...60MPH

$$

3 follow-up statements

945 
WWUS53 KMPX 220025
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
725 PM CDT FRI JUN 21 2013

MNC053-220115-
/O.CON.KMPX.SV.W.0087.000000T0000Z-130622T0115Z/
HENNEPIN MN-
725 PM CDT FRI JUN 21 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR HENNEPIN
COUNTY UNTIL 815 PM CDT...

AT 721 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM BUFFALO TO 10 MILES NORTHWEST OF EXCELSIOR TO
WACONIA...AND MOVING EAST AT 45 MPH.

HAZARD...70 MPH WIND GUSTS AND PENNY SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...EXPECT CONSIDERABLE TREE DAMAGE. DAMAGE IS LIKELY TO MOBILE
         HOMES...ROOFS AND OUTBUILDINGS.

LOCATIONS IMPACTED INCLUDE...
MINNEAPOLIS...EXCELSIOR...MINNETONKA...PLYMOUTH...THE LAKE MINNETONKA
AREA...MAPLE GROVE...EDEN PRAIRIE...ST LOUIS PARK...BROOKLYN PARK...
BLOOMINGTON...TWIN CITIES AIRPORT...MOUND...LORETTO...ORONO...
MEDINA...LONG LAKE...CORCORAN...SHOREWOOD...HAMEL AND ROGERS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

LARGE HAIL...DAMAGING WINDS AND CONTINUOUS CLOUD TO GROUND LIGHTNING
IS OCCURRING WITH THESE STORMS. MOVE INDOORS IMMEDIATELY. LIGHTNING
KILLS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO
BE STRUCK BY LIGHTNING.

IF ON OR NEAR LAKE MINNETONKA OR OTHER NEARBY LAKES...GET AWAY FROM 
THE WATER AND MOVE TO SHELTER. IF YOU CAN HEAR THUNDER...YOU ARE 
CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. BOATS CAN BE SWAMPED BY 
LARGE CAPSIZING WAVES...EVEN ON SMALL BODIES OF WATER. MOVE INTO 
DOCK AND SEEK SAFE SHELTER NOW.

&&

LAT...LON 4525 9352 4515 9331 4504 9328 4503 9321
      4491 9320 4489 9317 4481 9326 4486 9353
      4489 9353 4490 9377 4508 9377 4508 9374
      4513 9370 4517 9363 4520 9364 4522 9353
TIME...MOT...LOC 0025Z 274DEG 40KT 4519 9372 4502 9366
          4491 9369

HAIL...0.75IN
WIND...70MPH

$$

041 
WWUS53 KMPX 220043
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
743 PM CDT FRI JUN 21 2013

MNC053-220115-
/O.CON.KMPX.SV.W.0087.000000T0000Z-130622T0115Z/
HENNEPIN MN-
743 PM CDT FRI JUN 21 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR HENNEPIN
COUNTY UNTIL 815 PM CDT...

AT 739 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 5 MILES NORTH OF MAPLE GROVE TO PLYMOUTH TO
MINNETONKA...AND MOVING EAST AT 45 MPH.

HAZARD...70 MPH WIND GUSTS AND PENNY SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...EXPECT CONSIDERABLE TREE DAMAGE. DAMAGE IS LIKELY TO MOBILE
         HOMES...ROOFS AND OUTBUILDINGS.

LOCATIONS IMPACTED INCLUDE...
MINNEAPOLIS...ST LOUIS PARK...BROOKLYN PARK...BLOOMINGTON...TWIN
CITIES AIRPORT...CRYSTAL...CHAMPLIN...ROBBINSDALE...EDINA...BROOKLYN
CENTER AND RICHFIELD.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

THESE STORMS ARE PRODUCING DESTRUCTIVE WINDS AND LARGE HAIL. SEEK 
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 4525 9352 4515 9331 4504 9328 4503 9321
      4491 9320 4489 9317 4481 9326 4486 9352
      4489 9353 4490 9372 4498 9368 4520 9364
      4522 9353
TIME...MOT...LOC 0043Z 274DEG 40KT 4517 9344 4500 9338
          4489 9341

HAIL...0.75IN
WIND...70MPH

$$

531 
WWUS53 KMPX 220057
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
757 PM CDT FRI JUN 21 2013

MNC053-220115-
/O.CON.KMPX.SV.W.0087.000000T0000Z-130622T0115Z/
HENNEPIN MN-
757 PM CDT FRI JUN 21 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN
HENNEPIN COUNTY UNTIL 815 PM CDT...

AT 753 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM COON RAPIDS TO MINNEAPOLIS TO TWIN CITIES AIRPORT...
AND MOVING EAST AT 45 MPH.

HAZARD...70 MPH WIND GUSTS AND PENNY SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...EXPECT CONSIDERABLE TREE DAMAGE. DAMAGE IS LIKELY TO MOBILE
         HOMES...ROOFS AND OUTBUILDINGS.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EXTREME SOUTHEASTERN HENNEPIN COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE STORMS ARE PRODUCING DESTRUCTIVE WINDS AND LARGE HAIL. SEEK 
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 4525 9352 4515 9331 4504 9328 4503 9321
      4491 9320 4489 9317 4481 9326 4486 9352
      4491 9347 4506 9346 4522 9353
TIME...MOT...LOC 0057Z 274DEG 38KT 4516 9324 4499 9319
          4488 9322

HAIL...0.75IN
WIND...70MPH

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 7:37 PM CDT	Flash Flood Warning	MPX	Anoka, Dakota, Hennepin, Ramsey	3 hr
Jun 21, 7:48 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Dakota, Ramsey, Washington	42 min
Jun 21, 8:04 PM CDT	Severe Thunderstorm Warning	MPX	Nicollet	41 min
Jun 21, 8:25 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Washington	20 min
Jun 21, 8:27 PM CDT	Flash Flood Warning	MPX	Washington	4 hr
Jun 21, 8:38 PM CDT	Special Weather Statement	MPX	Goodhue	67 min
Jun 21, 8:38 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Nicollet	52 min
Jun 21, 8:58 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Scott, Sibley	47 min
Jun 21, 9:05 PM CDT	Severe Thunderstorm Warning	MPX	Carver, McLeod, Wright	40 min
Jun 21, 9:32 PM CDT	Severe Thunderstorm Warning	MPX	Le Sueur, Rice	43 min
Jun 21, 9:37 PM CDT	Severe Thunderstorm Warning	MPX	Redwood, Renville	53 min
Jun 21, 9:51 PM CDT	Flash Flood Warning	MPX	Kandiyohi, Redwood, Renville, Yellow Medicine	6 hr
Jun 21, 10:33 PM CDT	Flash Flood Warning	MPX	Anoka, Dakota, Hennepin, Ramsey	6 hr
Jun 21, 10:51 PM CDT	Severe Thunderstorm Warning	MPX	McLeod, Sibley	39 min
Jun 21, 10:56 PM CDT	Flash Flood Warning	MPX	Brown, McLeod, Nicollet, Redwood, Renville, Sibley	6 hr
Jun 21, 11:09 PM CDT	Severe Thunderstorm Warning	MPX	Carver, McLeod, Scott, Sibley	51 min
Jun 21, 11:35 PM CDT	Flash Flood Warning	MPX	Brown, Martin, Watonwan	6 hr
Jun 21, 11:40 PM CDT	Flash Flood Warning	MPX	Faribault, Freeborn	6 hr
Jun 22, 12:46 AM CDT	Severe Thunderstorm Warning	MPX	Faribault, Freeborn, Martin	44 min
Jun 22, 1:29 AM CDT	Severe Thunderstorm Warning	MPX	Faribault, Freeborn	61 min
Jun 22, 5:11 PM CDT	Special Weather Statement	MPX	Rice	49 min
Jun 22, 6:12 PM CDT	Flash Flood Watch	MPX	Anoka, Blue Earth, Brown, Carver, Chippewa, Douglas and 22 more	16 hr

Nearby

Severe Thunderstorm Warnings in Minnesota, 2013 Every severe thunderstorm warning in 2013

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.