Alert archive / Minnesota / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 19, NWS Twin Cities, MN

June 7, 2015Mille Lacs County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 7, 2015, 8:58 PM CDT for Mille Lacs County, Minnesota. It was in force for 32 min. 1 report 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 7, 2015, 8:58 PM CDT (01:58 UTC)
Expired
Jun 7, 2015, 9:30 PM CDT
In force
32 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Mille Lacs County, MN

The radar

The Minneapolis radar (KMPX), 129 km from the middle of the area, began a volume at 02:01 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

TimeReportWhereRemark
Jun 7, 9:00 PM CDTHAIL 0.88Onamia, MNNICKEL SIZE HAIL THAT LASTED A WHILE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 2.0 hours before the alert went out and 129 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 00:00Z on 2015-06-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 79 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 00:00Z on 2015-06-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 square meters per square second.19395878Sfc1 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
79 J/kg
Mixed-layer CIN
-84 J/kg
Mixed-layer LCL
1746 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
50 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

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

246 
WUUS53 KMPX 080158
SVRMPX
MNC095-080230-
/O.NEW.KMPX.SV.W.0019.150608T0158Z-150608T0230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
858 PM CDT SUN JUN 7 2015

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN MILLE LACS COUNTY IN EAST CENTRAL MINNESOTA...

* UNTIL 930 PM CDT

* AT 858 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER ONAMIA...OR
  32 MILES SOUTHEAST OF BRAINERD...MOVING SOUTHEAST AT 35 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 REMAIN OVER MAINLY RURAL AREAS OF
  NORTHERN MILLE LACS COUNTY...INCLUDING THE FOLLOWING LOCATIONS...
  BAYVIEW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS. PEOPLE OUTSIDE
SHOULD MOVE TO A SHELTER...INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.

&&

LAT...LON 4604 9343 4599 9343 4598 9345 4598 9352
      4593 9352 4589 9359 4610 9377 4615 9366
TIME...MOT...LOC 0158Z 315DEG 31KT 4607 9366 

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

ADL
1 follow-up statement
796 
WWUS53 KMPX 080216
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
916 PM CDT SUN JUN 7 2015

MNC095-080230-
/O.CON.KMPX.SV.W.0019.000000T0000Z-150608T0230Z/
MILLE LACS MN-
916 PM CDT SUN JUN 7 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 930 PM CDT
FOR NORTHEASTERN MILLE LACS COUNTY...

AT 916 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 9 MILES NORTHWEST
OF OGILVIE...OR 27 MILES WEST OF HINCKLEY...MOVING SOUTHEAST AT 35
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 REMAIN OVER MAINLY RURAL AREAS OF
NORTHEASTERN MILLE LACS COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS. PEOPLE OUTSIDE
SHOULD MOVE TO A SHELTER...INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.

&&

LAT...LON 4604 9343 4599 9343 4598 9345 4598 9352
      4593 9352 4589 9359 4600 9368 4610 9355
TIME...MOT...LOC 0216Z 315DEG 31KT 4596 9350 

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

ADL

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 7, 7:00 PM CDTSpecial Weather StatementMPXDakota30 min
Jun 7, 7:25 PM CDTSpecial Weather StatementMPXBlue Earth35 min
Jun 7, 8:20 PM CDTSpecial Weather StatementMPXMille Lacs40 min
Jun 7, 8:25 PM CDTSevere Thunderstorm WarningMPXMorrison35 min
Jun 7, 8:51 PM CDTSpecial Weather StatementMPXMorrison24 min
Jun 7, 9:14 PM CDTSpecial Weather StatementMPXBenton31 min
Jun 7, 9:19 PM CDTSpecial Weather StatementMPXKanabec26 min
Jun 7, 9:35 PM CDTSpecial Weather StatementMPXMille Lacs25 min
Jun 7, 9:58 PM CDTSpecial Weather StatementMPXIsanti, Sherburne32 min
Jun 7, 10:18 PM CDTSpecial Weather StatementMPXAnoka, Chisago42 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.