Alert archive / Minnesota / Special Weather Statements in 2012

Special Weather Statement, NWS Twin Cities, MN

May 6, 2012Carver County, McLeod County, Minnesota

NWS Twin Cities, MN issued this special weather statement at May 6, 2012, 12:39 AM CDT for Carver County, McLeod County, Minnesota. It was in force for 66 min. 3 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: May 6, 2012, 12:39 AM CDT (05:39 UTC)
Expired: May 6, 2012, 1:45 AM CDT
In force: 66 min
Issued by: NWS Twin Cities, MN

Counties Carver County, MN, McLeod County, MN

The radar

The Minneapolis radar (KMPX), 28 km from the middle of the area, began a volume at 05:42 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

Time	Report	Where	Remark
May 6, 1:35 AM CDT	HAIL 0.88	Cologne, MN	WINDS ESTIMATED AT SLIGHTLY OVER 50 MPH.
May 6, 1:39 AM CDT	HAIL 0.75	Waconia, MN	DIME SIZE HAIL REPORTED WITH PLENTY OF PEA SIZE HAIL AND TORRENTIAL RAINFALL.
May 6, 1:47 AM CDT	HAIL 0.75	Victoria, MN	DIME SIZE HAIL

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, 5.7 hours before the alert went out and 26 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 850 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: -28 m²/s²
0-3 km storm-relative helicity: 180 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

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

000 
WWUS83 KMPX 060539
SPSMPX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1239 AM CDT SUN MAY 6 2012

MNZ066-068-060645-
CARVER-MCLEOD-
1239 AM CDT SUN MAY 6 2012

AT 1238 AM CDT...WEATHER SERVICE RADAR WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 4 MILES NORTH OF LAKESIDE
TO 5 MILES NORTHWEST OF BROWNTON TO 5 MILES SOUTH OF BROWNTON. THESE
STORMS WERE MOVING EAST AT 45 MPH.

HAIL UP TO NICKEL SIZE AND WINDS UP TO 50 MPH ARE EXPECTED WITH THESE
STORMS.

* LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  FERNANDO.
  SUMTER.
  BISCAY.
  GLENCOE.
  SILVER LAKE.
  LESTER PRAIRIE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

RAINFALL AMOUNTS OF ONE TO TWO INCHES ARE POSSIBLE FROM THE 
THUNDERSTORM. THIS MAY RESULT IN BRIEF RUNOFF PROBLEMS AND PONDING 
OF WATER ON AREA ROADWAYS.

&&

LAT...LON 4497 9450 4498 9377 4489 9377 4489 9360
      4484 9356 4480 9355 4474 9363 4471 9361
      4470 9367 4463 9376 4468 9377 4468 9388
      4472 9389 4472 9425 4463 9426 4463 9449
TIME...MOT...LOC 0539Z 262DEG 39KT 4489 9452 4479 9440
          4466 9436

$$

JLT

The office that day

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

Issued	Product	Office	Counties	Lasted
May 5, 7:58 PM CDT	Special Weather Statement	MPX	Anoka, Chisago, Isanti, Sherburne	47 min
May 5, 8:35 PM CDT	River Flood Watch	MPX	Todd	15 hr
May 5, 8:48 PM CDT	Special Weather Statement	MPX	Lac qui Parle	27 min
May 5, 9:01 PM CDT	Severe Thunderstorm Warning	MPX	Lac qui Parle	14 min
May 5, 9:24 PM CDT	Severe Thunderstorm Warning	MPX	Stevens	41 min
May 5, 9:27 PM CDT	Severe Thunderstorm Warning	MPX	Lac qui Parle, Yellow Medicine	63 min
May 5, 11:24 PM CDT	Special Weather Statement	MPX	Renville	66 min
May 5, 11:52 PM CDT	Severe Thunderstorm Warning	MPX	Renville	42 min
May 6, 1:35 AM CDT	Special Weather Statement	MPX	Carver, Hennepin, Scott	40 min
May 6, 1:44 AM CDT	Severe Thunderstorm Warning	MPX	Carver, Dakota, Hennepin, Ramsey, Scott	46 min
May 6, 2:14 AM CDT	Special Weather Statement	MPX	Dakota	46 min
May 6, 2:24 AM CDT	Severe Thunderstorm Warning	MPX	Dakota, Goodhue, Washington	36 min
May 6, 10:54 AM CDT	River Flood Warning	MPX	Redwood	22 hr
May 6, 10:54 AM CDT	River Flood Warning	MPX	Brown	33 hr
May 6, 3:21 AM CDT	Special Weather Statement	MPX	Pepin	39 min

Nearby

Special Weather Statements in Minnesota, 2012 Every 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.