Alert archive / Minnesota / Special Weather Statements in 2012

Special Weather Statement, NWS Twin Cities, MN

April 2, 2012Dakota County, Scott County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Apr 2, 2012, 10:09 PM CDT for Dakota County, Scott County, Minnesota. It was in force for 51 min. 2 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
Apr 2, 2012, 10:09 PM CDT (03:09 UTC)
Expired
Apr 2, 2012, 11:00 PM CDT
In force
51 min
Issued by
NWS Twin Cities, MN

Counties Dakota County, MN, Scott County, MN

The radar

The Minneapolis radar (KMPX), 25 km from the middle of the area, began a volume at 03:11 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
Apr 2, 10:35 PM CDTHAIL 0.752 Sse Prior Lake, MN
Apr 2, 10:53 PM CDTHAIL 1Burnsville, MN

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, 3.2 hours before the alert went out and 27 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 2012-04-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2012-04-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 136 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1598 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
136 m²/s²
0-3 km storm-relative helicity
330 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

906 
WWUS83 KMPX 030309
SPSMPX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1009 PM CDT MON APR 2 2012

MNZ060-063-067>070-076>078-030400-
CARVER-DAKOTA-GOODHUE-HENNEPIN-LE SUEUR-RICE-SCOTT-SIBLEY-WASHINGTON-
1009 PM CDT MON APR 2 2012

AT 1006 PM CDT...WEATHER SERVICE RADAR WAS TRACKING SEVERAL STRONG 
THUNDERSTORMS ACROSS THE SOUTHERN TWIN CITIES METRO. THEY WERE 
MOVING EAST TO NORTHEAST AT 25 MPH.

ONE HALF INCH DIAMETER HAIL IS EXPECTED WITH THESE STORMS.

* LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  BELLE PLAINE.
  JORDAN.
  CARVER.
  FARMINGTON.
  SHAKOPEE.
  SAVAGE.

LAT...LON 4489 9303 4450 9293 4454 9376 4471 9389
TIME...MOT...LOC 0308Z 238DEG 23KT 4468 9371

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 2, 9:50 PM CDTSpecial Weather StatementMPXSibley40 min
Apr 2, 11:03 PM CDTSpecial Weather StatementMPXCarver, Dakota, Scott42 min
Apr 3, 12:09 AM CDTSpecial Weather StatementMPXRamsey, Washington36 min
Apr 3, 1:42 AM CDTSpecial Weather StatementMPXSaint Croix48 min

Nearby

Special Weather Statements in Minnesota, 2012Every special weather statement 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.