Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 207, NWS Twin Cities, MN

July 3, 2012Mille Lacs County, Morrison County, Todd County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 3, 2012, 12:55 AM CDT for Mille Lacs County, Morrison County, Todd County, Minnesota. It was in force for 65 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 3, 2012, 12:55 AM CDT (05:55 UTC)
Expired
Jul 3, 2012, 2:00 AM CDT
In force
65 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

Counties Mille Lacs County, MN, Morrison County, MN, Todd County, MN

The radar

The Minneapolis radar (KMPX), 157 km from the middle of the area, began a volume at 05:55 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 2, 6:54 PM CDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 00:00Z, 5.9 hours before the alert went out and 156 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 2012-07-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2216 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 2012-07-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 square meters per square second.1939Sfc1 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
2216 J/kg
Mixed-layer CIN
-59 J/kg
Mixed-layer LCL
2064 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
116 m²/s²
Significant tornado parameter
0.0
Supercell composite
5.5

Open this sounding in Storm Lab

The text

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

197 
WUUS53 KMPX 030555
SVRMPX
MNC095-097-153-030700-
/O.NEW.KMPX.SV.W.0207.120703T0555Z-120703T0700Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1255 AM CDT TUE JUL 3 2012

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

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

* UNTIL 200 AM CDT

* AT 1250 AM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...
  CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL AND DAMAGING WINDS OF 60
  MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM PILLAGER
  TO 6 MILES NORTHEAST OF BROWERVILLE...AND MOVING EAST AT 50 MPH.

LOCATIONS IN THE WARNING INCLUDE...
  LITTLE FALLS...
  PHILBROOK...
  MOTLEY...
  BROWERVILLE...
  CLARISSA...
  EAGLE BEND...
  CUSHING...
  RANDALL...
  SOBIESKI...
  HARDING...
  LASTRUP...
  PIERZ...
  VINELAND...
  GENOLA...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS IN EXCESS OF 60 MPH AND LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

LAT...LON 4631 9454 4634 9442 4630 9435 4626 9434
      4623 9439 4616 9436 4616 9383 4625 9381
      4626 9344 4616 9342 4610 9343 4586 9367
      4586 9451 4602 9490 4620 9514 4636 9473
TIME...MOT...LOC 0555Z 292DEG 42KT 4636 9438 4614 9474
WIND...HAIL 60MPH 1.25IN

$$

JPC
2 follow-up statements
775 
WWUS53 KMPX 030620
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
120 AM CDT TUE JUL 3 2012

MNC153-030634-
/O.CAN.KMPX.SV.W.0207.000000T0000Z-120703T0700Z/
TODD MN-
120 AM CDT TUE JUL 3 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN TODD COUNTY IS
CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE 
WARNED AREA. THEREFORE...THE SEVERE THUNDERSTORM WARNING FOR 
NORTHERN TODD COUNTY HAS BEEN CANCELLED.

LAT...LON 4630 9435 4626 9434 4623 9439 4616 9436
      4616 9383 4625 9381 4626 9344 4616 9342
      4610 9343 4586 9367 4586 9451 4592 9465
      4634 9465 4631 9454 4634 9442
TIME...MOT...LOC 0619Z 290DEG 41KT 4630 9350 4608 9443

$$

MNC095-097-030700-
/O.CON.KMPX.SV.W.0207.000000T0000Z-120703T0700Z/
MILLE LACS MN-MORRISON MN-
120 AM CDT TUE JUL 3 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR MORRISON AND
NORTHERN MILLE LACS COUNTIES UNTIL 200 AM CDT...

AT 117 AM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL...AND
DAMAGING WINDS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM MALMO TO RANDALL...MOVING EAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
  LITTLE FALLS...SOBIESKI...VINELAND...HARDING...LASTRUP...BAYVIEW...
  ISLE...GENOLA...PIERZ...WAHKON...BUCKMAN...ONAMIA AND HILLMAN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.

&&

LAT...LON 4630 9435 4626 9434 4623 9439 4616 9436
      4616 9383 4625 9381 4626 9344 4616 9342
      4610 9343 4586 9367 4586 9451 4592 9465
      4634 9465 4631 9454 4634 9442
TIME...MOT...LOC 0619Z 290DEG 41KT 4630 9350 4608 9443
WIND...HAIL 60MPH 1.25IN

$$

JPC
964 
WWUS53 KMPX 030637
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
137 AM CDT TUE JUL 3 2012

MNC095-097-030700-
/O.CON.KMPX.SV.W.0207.000000T0000Z-120703T0700Z/
MILLE LACS MN-MORRISON MN-
137 AM CDT TUE JUL 3 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL
MORRISON AND NORTHERN MILLE LACS COUNTIES UNTIL 200 AM CDT...

AT 136 AM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL...AND
DAMAGING WINDS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 6 MILES SOUTHWEST OF MCGRATH TO 5 MILES EAST OF LITTLE
FALLS...MOVING SOUTHEAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
  GENOLA...ONAMIA...HILLMAN AND BUCKMAN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.

&&

LAT...LON 4626 9344 4616 9342 4610 9343 4586 9367
      4586 9451 4616 9436 4616 9383 4625 9381
TIME...MOT...LOC 0638Z 296DEG 39KT 4616 9330 4595 9423
WIND...HAIL 60MPH 1.25IN

$$

JPC

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 3, 12:12 AM CDTSpecial Weather StatementMPXTodd48 min
Jul 3, 12:22 AM CDTSevere Thunderstorm WarningMPXTodd38 min
Jul 3, 1:46 AM CDTSpecial Weather StatementMPXRedwood, Renville44 min
Jul 3, 2:02 AM CDTSevere Thunderstorm WarningMPXBenton, Mille Lacs, Morrison, Stearns28 min
Jul 3, 2:15 AM CDTTornado WarningMPXSherburne30 min
Jul 3, 2:36 AM CDTSpecial Weather StatementMPXWright39 min
Jul 3, 2:42 AM CDTSpecial Weather StatementMPXAnoka, Chisago, Ramsey48 min
Jul 3, 2:53 AM CDTSpecial Weather StatementMPXHennepin37 min
Jul 3, 3:25 AM CDTSevere Thunderstorm WarningMPXAnoka, Dakota, Hennepin, Ramsey, Washington50 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2012Every severe thunderstorm warning in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.