Alert archive / Minnesota / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 48, NWS Twin Cities, MN

June 29, 2015Hennepin County, Wright County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 29, 2015, 3:19 PM CDT for Hennepin County, Wright County, Minnesota. It was in force for 56 min. 8 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, 3:19 PM CDT (20:19 UTC)
Expired
Jun 29, 2015, 4:15 PM CDT
In force
56 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Hennepin County, MN, Wright County, MN

The radar

The Minneapolis radar (KMPX), 40 km from the middle of the area, began a volume at 20:21 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

TimeReportWhereRemark
Jun 29, 3:20 PM CDTHAIL 0.752 Nne Rogers, MN
Jun 29, 3:20 PM CDTHAIL 1.754 Ssw Elk River, MN
Jun 29, 3:33 PM CDTHAIL 1Rogers, MNREPORTED VIA TWITTER.
Jun 29, 3:45 PM CDTHAIL 0.5Maple Grove, MNREPORTED VIA TWITTER.
Jun 29, 3:50 PM CDTHAIL 1.25Maple Grove, MNREPORTED VIA TWITTER.
Jun 29, 3:53 PM CDTHAIL 1.25Maple Grove, MNALSO REPORTED 3 TO 4 INCH DIAMETER BRANCHES DOWN. HAIL AND BRANCHES DOWN NEAR DALLAS AND BERKSHIRE ROADS.
Jun 29, 3:54 PM CDTHAIL 0.88Maple Grove, MN
Jun 29, 3:55 PM CDTHAIL 25 Nnw Plymouth, MN

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.

IssuedProductOfficeLasted
Jun 29, 1:57 PM CDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 8.3 hours before the alert went out and 40 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-pSkew-T log-p diagram, Minneapolis, MN at 12:00Z on 2015-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 160 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2015-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 55 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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.

797 
WUUS53 KMPX 292019
SVRMPX
MNC053-171-292115-
/O.NEW.KMPX.SV.W.0048.150629T2019Z-150629T2115Z/

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

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

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

* UNTIL 415 PM CDT

* AT 318 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER OTSEGO...OR
  15 MILES NORTHEAST OF BUFFALO...MOVING SOUTH AT 20 MPH.

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

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING AND TREES. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  RAMSEY AROUND 325 PM CDT.
  ST. MICHAEL AROUND 330 PM CDT.
  ROGERS AROUND 335 PM CDT.
  MAPLE GROVE AND CORCORAN AROUND 345 PM CDT.
  BROOKLYN PARK AROUND 350 PM CDT.
  MEDINA AND INDEPENDENCE AROUND 400 PM CDT.
  PLYMOUTH AROUND 405 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
LORETTO...DAYTON...HAMEL...NEW HOPE...CRYSTAL...OSSEO...HANOVER AND
GREENFIELD.

THIS INCLUDES INTERSTATE 94 IN MINNESOTA BETWEEN MILE MARKERS 202 AND
220.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4527 9355 4523 9349 4523 9347 4504 9336
      4502 9365 4528 9365 4529 9355
TIME...MOT...LOC 2018Z 347DEG 18KT 4528 9358 

HAIL...1.00IN
WIND...60MPH
 
$$

BORGHOFF
2 follow-up statements
322 
WWUS53 KMPX 292034
SVSMPX

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

MNC171-292044-
/O.CAN.KMPX.SV.W.0048.000000T0000Z-150629T2115Z/
WRIGHT MN-
334 PM CDT MON JUN 29 2015

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL WRIGHT 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.

LAT...LON 4522 9347 4504 9336 4502 9359 4521 9358
      4522 9357 4524 9350
TIME...MOT...LOC 2034Z 332DEG 25KT 4516 9350 

$$

MNC053-292115-
/O.CON.KMPX.SV.W.0048.000000T0000Z-150629T2115Z/
HENNEPIN MN-
334 PM CDT MON JUN 29 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM CDT
FOR NORTH CENTRAL HENNEPIN COUNTY...

AT 334 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER DAYTON...OR 17
MILES EAST OF BUFFALO...MOVING SOUTHEAST AT 30 MPH.

HAZARD...QUARTER SIZE HAIL. 

SOURCE...TRAINED WEATHER SPOTTERS. 

IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

THIS SEVERE STORM WILL BE NEAR...
  BROOKLYN PARK...MAPLE GROVE AND MEDINA AROUND 340 PM CDT.
  PLYMOUTH AROUND 345 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
DAYTON...HAMEL...NEW HOPE...CRYSTAL AND OSSEO.

THIS INCLUDES INTERSTATE 94 IN MINNESOTA BETWEEN MILE MARKERS 207 AND
219.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4522 9347 4504 9336 4502 9359 4521 9358
      4522 9357 4524 9350
TIME...MOT...LOC 2034Z 332DEG 25KT 4516 9350 

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

BORGHOFF
341 
WWUS53 KMPX 292057
SVSMPX

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

MNC053-292115-
/O.CON.KMPX.SV.W.0048.000000T0000Z-150629T2115Z/
HENNEPIN MN-
357 PM CDT MON JUN 29 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 415 PM CDT
FOR CENTRAL HENNEPIN COUNTY...

AT 357 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER PLYMOUTH...OR
12 MILES NORTHWEST OF MINNEAPOLIS...MOVING SOUTH AT 20 MPH.

HAZARD...QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

THIS SEVERE STORM WILL BE NEAR...
  PLYMOUTH AROUND 400 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE NEW HOPE
AND CRYSTAL.

THIS INCLUDES INTERSTATE 94 IN MINNESOTA BETWEEN MILE MARKERS 216 AND
219.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4511 9341 4504 9336 4502 9357 4510 9353
TIME...MOT...LOC 2057Z 350DEG 17KT 4506 9348 

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

BORGHOFF

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 1:19 PM CDTSpecial Weather StatementMPXMille Lacs26 min
Jun 29, 3:12 PM CDTSpecial Weather StatementMPXHennepin33 min
Jun 29, 3:56 PM CDTSevere Thunderstorm WarningMPXHennepin64 min
Jun 29, 4:28 PM CDTSevere Thunderstorm WarningMPXDakota, Scott47 min
Jun 29, 5:00 PM CDTSevere Thunderstorm WarningMPXChisago, Isanti60 min
Jun 29, 5:32 PM CDTSevere Thunderstorm WarningMPXAnoka, Chisago, Washington58 min
Jun 29, 6:02 PM CDTSevere Thunderstorm WarningMPXAnoka, Isanti43 min
Jun 29, 6:28 PM CDTSevere Thunderstorm WarningMPXAnoka, Ramsey, Washington47 min
Jun 29, 6:48 PM CDTSevere Thunderstorm WarningMPXAnoka, Ramsey42 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2015Every 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.