Alert archive / Minnesota / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 52, NWS Twin Cities, MN

June 29, 2015Polk County, Wisconsin; Chisago County, Isanti County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 29, 2015, 5:00 PM CDT for Polk County, Wisconsin; Chisago County, Isanti County, Minnesota. It was in force for 60 min. 5 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 29, 2015, 5:00 PM CDT (22:00 UTC)
Expired: Jun 29, 2015, 6:00 PM CDT
In force: 60 min
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 50.0 mph

Counties Chisago County, MN, Isanti County, MN, Polk County, WI

The radar

The Minneapolis radar (KMPX), 96 km from the middle of the area, began a volume at 22:01 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 29, 5:00 PM CDT	HAIL 2	4 W Rush City, MN	OCCURRED ON SHOREWOOD CIRCLE E.
Jun 29, 5:01 PM CDT	HAIL 3	Rush City, MN	REPORTED VIA TWITTER.
Jun 29, 5:20 PM CDT	HAIL 1.75	1 Ne North Branch, MN
Jun 29, 5:31 PM CDT	HAIL 1.5	North Branch, MN
Jun 29, 5:31 PM CDT	HAIL 2.5	2 Sse North Branch, MN	MEASURED AFTER HAIL HAD ENDED

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 29, 1:57 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.0 hours before the alert went out and 97 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: 160 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 1297 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 86 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

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

325 
WUUS53 KMPX 292200
SVRMPX
MNC025-059-WIC095-292300-
/O.NEW.KMPX.SV.W.0052.150629T2200Z-150629T2300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
500 PM CDT MON JUN 29 2015

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CHISAGO COUNTY IN EAST CENTRAL MINNESOTA...
  SOUTHEASTERN ISANTI COUNTY IN EAST CENTRAL MINNESOTA...
  NORTHWESTERN POLK COUNTY IN NORTHWESTERN WISCONSIN...

* UNTIL 600 PM CDT

* AT 500 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR RUSH CITY...
  OR 13 MILES NORTHEAST OF CAMBRIDGE...MOVING SOUTH AT 20 MPH.

  HAZARD...QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  NORTH BRANCH AROUND 525 PM CDT.
  CHISAGO CITY AROUND 550 PM CDT.
  LINDSTROM AROUND 600 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE SPRING
LAKE...WEBER...BRANCH...RUSH CITY AIRPORT...WILD RIVER STATE PARK AND
HARRIS.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 141 AND 162.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMAIN ALERT FOR A POSSIBLE TORNADO! TORNADOES CAN DEVELOP QUICKLY
FROM SEVERE THUNDERSTORMS. IF YOU SPOT A TORNADO GO AT ONCE INTO THE
BASEMENT OR SMALL CENTRAL ROOM IN A STURDY STRUCTURE.

&&

LAT...LON 4572 9287 4565 9289 4564 9277 4542 9271
      4541 9302 4541 9314 4572 9314
TIME...MOT...LOC 2200Z 351DEG 19KT 4567 9303 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...<50MPH
 
$$

BORGHOFF

3 follow-up statements

886 
WWUS53 KMPX 292216 RRA
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
516 PM CDT MON JUN 29 2015

WIC095-292226-
/O.CAN.KMPX.SV.W.0052.000000T0000Z-150629T2300Z/
POLK WI-
516 PM CDT MON JUN 29 2015

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN POLK COUNTY IS
CANCELLED...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF 
THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CDT FOR
EAST CENTRAL MINNESOTA AND NORTHWESTERN WISCONSIN.

LAT...LON 4561 9288 4557 9287 4557 9277 4542 9271
      4541 9314 4564 9311
TIME...MOT...LOC 2216Z 345DEG 25KT 4557 9296 

$$

MNC025-059-292300-
/O.CON.KMPX.SV.W.0052.000000T0000Z-150629T2300Z/
CHISAGO MN-ISANTI MN-
516 PM CDT MON JUN 29 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR CENTRAL CHISAGO AND SOUTHEASTERN ISANTI COUNTIES...

AT 516 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER HARRIS...OR 13
MILES EAST OF CAMBRIDGE...MOVING SOUTH AT 30 MPH.

HAZARD...GOLF BALL SIZE HAIL AND 60 MPH WIND GUSTS. 

SOURCE...RADAR INDICATED. 

IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT HAIL 
         DAMAGE TO ROOFS...SIDING...WINDOWS AND VEHICLES. EXPECT 
         WIND DAMAGE TO ROOFS...SIDING AND TREES. 

THIS SEVERE STORM WILL BE NEAR...
  NORTH BRANCH AROUND 520 PM CDT.
  CHISAGO CITY AROUND 540 PM CDT.
  LINDSTROM AROUND 550 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE SPRING
LAKE...WEBER...BRANCH...WILD RIVER STATE PARK AND HARRIS.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 142 AND 155.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMAIN ALERT FOR A POSSIBLE TORNADO! TORNADOES CAN DEVELOP QUICKLY
FROM SEVERE THUNDERSTORMS. IF YOU SPOT A TORNADO GO AT ONCE INTO THE
BASEMENT OR SMALL CENTRAL ROOM IN A STURDY STRUCTURE.

&&

LAT...LON 4561 9288 4557 9287 4557 9277 4542 9271
      4541 9314 4564 9311
TIME...MOT...LOC 2216Z 345DEG 25KT 4557 9296 

TORNADO...POSSIBLE
HAIL...1.75IN
WIND...60MPH
 
$$

BORGHOFF

748 
WWUS53 KMPX 292236
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
536 PM CDT MON JUN 29 2015

MNC025-059-292300-
/O.CON.KMPX.SV.W.0052.000000T0000Z-150629T2300Z/
CHISAGO MN-ISANTI MN-
536 PM CDT MON JUN 29 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 600 PM CDT
FOR CENTRAL CHISAGO AND SOUTHEASTERN ISANTI COUNTIES...

AT 536 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR NORTH
BRANCH...OR 14 MILES EAST OF CAMBRIDGE...MOVING SOUTH AT 20 MPH.

HAZARD...HALF DOLLAR SIZE HAIL. 

SOURCE...TRAINED WEATHER SPOTTERS. 

IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

THIS SEVERE STORM WILL BE NEAR...
  CHISAGO CITY AROUND 550 PM CDT.
  LINDSTROM AROUND 600 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE SPRING
LAKE...WILD RIVER STATE PARK AND BRANCH.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 142 AND 152.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMAIN ALERT FOR A POSSIBLE TORNADO! TORNADOES CAN DEVELOP QUICKLY
FROM SEVERE THUNDERSTORMS. IF YOU SPOT A TORNADO GO AT ONCE INTO THE
BASEMENT OR SMALL CENTRAL ROOM IN A STURDY STRUCTURE.

&&

LAT...LON 4550 9274 4542 9276 4541 9307 4541 9313
      4554 9307 4561 9291 4561 9288 4557 9287
      4557 9277
TIME...MOT...LOC 2236Z 355DEG 18KT 4547 9295 

TORNADO...POSSIBLE
HAIL...1.25IN
WIND...<50MPH
 
$$

BORGHOFF

217 
WWUS53 KMPX 292255
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
555 PM CDT MON JUN 29 2015

MNC025-059-292305-
/O.EXP.KMPX.SV.W.0052.000000T0000Z-150629T2300Z/
CHISAGO MN-ISANTI MN-
555 PM CDT MON JUN 29 2015

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CHISAGO AND
SOUTHEASTERN ISANTI COUNTIES WILL EXPIRE AT 600 PM CDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM CDT FOR
EAST CENTRAL MINNESOTA AND NORTHWESTERN WISCONSIN.

LAT...LON 4550 9274 4542 9276 4541 9307 4541 9313
      4554 9307 4561 9291 4561 9288 4557 9287
      4557 9277
TIME...MOT...LOC 2253Z 351DEG 19KT 4547 9295 

$$

BORGHOFF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 29, 3:13 AM CDT	Dense Fog Advisory	MPX	Barron, Chippewa, Dunn, Eau Claire, Pepin, Pierce and 3 more	6 hr
Jun 29, 2:52 PM CDT	Special Weather Statement	MPX	Chippewa	38 min
Jun 29, 3:24 PM CDT	Special Weather Statement	MPX	Barron	51 min
Jun 29, 3:33 PM CDT	Special Weather Statement	MPX	Eau Claire	27 min
Jun 29, 3:35 PM CDT	Special Weather Statement	MPX	Barron	25 min
Jun 29, 4:39 PM CDT	Severe Thunderstorm Warning	MPX	Dunn, Eau Claire	25 min
Jun 29, 6:28 PM CDT	Severe Thunderstorm Warning	MPX	Saint Croix	47 min
Jun 29, 1:19 PM CDT	Special Weather Statement	MPX	Mille Lacs	26 min
Jun 29, 3:12 PM CDT	Special Weather Statement	MPX	Hennepin	33 min
Jun 29, 3:19 PM CDT	Severe Thunderstorm Warning	MPX	Hennepin, Wright	56 min
Jun 29, 3:56 PM CDT	Severe Thunderstorm Warning	MPX	Hennepin	64 min
Jun 29, 4:28 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Scott	47 min
Jun 29, 5:32 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Chisago, Washington	58 min
Jun 29, 6:02 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Isanti	43 min
Jun 29, 6:48 PM CDT	Severe Thunderstorm Warning	MPX	Anoka, Ramsey	42 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2015 Severe Thunderstorm Warnings in Wisconsin, 2015 Every severe thunderstorm warning in 2015

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.