Alert archive / Minnesota / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 18, NWS Twin Cities, MN

June 7, 2015Morrison County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 7, 2015, 8:25 PM CDT for Morrison County, Minnesota. It was in force for 35 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, 8:25 PM CDT (01:25 UTC)
Expired
Jun 7, 2015, 9:00 PM CDT
In force
35 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Morrison County, MN

The radar

The Minneapolis radar (KMPX), 163 km from the middle of the area, began a volume at 01:25 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, 8:35 PM CDTHAIL 1.752 N Randall, MNPUBLIC REPORT OF GOLF BALL HAIL. TIME ESTIMATED FROM RADAR.

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, 1.4 hours before the alert went out and 162 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.

936 
WUUS53 KMPX 080125
SVRMPX
MNC097-080200-
/O.NEW.KMPX.SV.W.0018.150608T0125Z-150608T0200Z/

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

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL MORRISON COUNTY IN CENTRAL MINNESOTA...

* UNTIL 900 PM CDT

* AT 825 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER CUSHING...OR
  19 MILES NORTHWEST OF LITTLE FALLS...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 BE NEAR...
  RANDALL AROUND 845 PM CDT.
  CAMP RIPLEY AROUND 850 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE CUSHING.

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 4612 9427 4600 9449 4618 9466 4619 9464
      4624 9464 4627 9460
TIME...MOT...LOC 0125Z 309DEG 29KT 4619 9462 

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

ADL
1 follow-up statement
644 
WWUS53 KMPX 080143
SVSMPX

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

MNC097-080200-
/O.CON.KMPX.SV.W.0018.000000T0000Z-150608T0200Z/
MORRISON MN-
843 PM CDT SUN JUN 7 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM CDT
FOR WEST CENTRAL MORRISON COUNTY...

AT 842 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER RANDALL...OR 9
MILES NORTHWEST OF LITTLE FALLS...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 STORM WILL BE NEAR...
  CAMP RIPLEY AROUND 850 PM CDT.

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 4602 9446 4614 9457 4620 9446 4612 9427
TIME...MOT...LOC 0142Z 309DEG 29KT 4610 9446 

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, 8:51 PM CDTSpecial Weather StatementMPXMorrison24 min
Jun 7, 8:58 PM CDTSevere Thunderstorm WarningMPXMille Lacs32 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.