Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 206, NWS Twin Cities, MN

July 3, 2012Todd County, Minnesota

NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 3, 2012, 12:22 AM CDT for Todd County, Minnesota. It was in force for 38 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, 12:22 AM CDT (05:22 UTC)
Expired
Jul 3, 2012, 1:00 AM CDT
In force
38 min
Issued by
NWS Twin Cities, MN
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

County Todd County, MN

The radar

The Minneapolis radar (KMPX), 190 km from the middle of the area, began a volume at 05:23 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, 5.4 hours before the alert went out and 188 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°0°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.

820 
WUUS53 KMPX 030522
SVRMPX
MNC153-030600-
/O.NEW.KMPX.SV.W.0206.120703T0522Z-120703T0600Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1222 AM CDT TUE JUL 3 2012

THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN TODD COUNTY IN CENTRAL MINNESOTA...

* UNTIL 100 AM CDT

* AT 1218 AM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
  PRODUCING HALF DOLLAR SIZE HAIL AND DAMAGING WINDS OF 60 MPH. THIS
  STORM WAS LOCATED 6 MILES SOUTHWEST OF WADENA...OR ABOUT 18 MILES
  WEST OF STAPLES...AND MOVING EAST AT 45 MPH.

LOCATIONS IN THE WARNING INCLUDE...
  STAPLES...
  HEWITT...
  BERTHA...
  PHILBROOK...

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 4636 9471 4636 9466 4635 9465 4613 9465
      4612 9466 4629 9517 4636 9516 4637 9515
      4638 9473
TIME...MOT...LOC 0521Z 284DEG 38KT 4636 9515
WIND...HAIL 60MPH 1.25IN

$$

JPC
1 follow-up statement
877 
WWUS53 KMPX 030545
SVSMPX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1245 AM CDT TUE JUL 3 2012

MNC153-030600-
/O.CON.KMPX.SV.W.0206.000000T0000Z-120703T0600Z/
TODD MN-
1245 AM CDT TUE JUL 3 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
TODD COUNTY UNTIL 100 AM CDT...

AT 1241 AM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL...AND
DAMAGING WINDS OF 60 MPH.  THIS STORM WAS LOCATED 7 MILES SOUTHWEST
OF STAPLES...MOVING EAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
  PHILBROOK.

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 4636 9471 4636 9466 4635 9465 4613 9465
      4612 9466 4613 9471 4623 9498 4638 9497
      4638 9474
TIME...MOT...LOC 0545Z 288DEG 37KT 4627 9484
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, 12:55 AM CDTSevere Thunderstorm WarningMPXMille Lacs, Morrison, Todd65 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.