Alert archive / Minnesota / Special Weather Statements in 2015

Special Weather Statement, NWS Twin Cities, MN

April 7, 2015Freeborn County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Apr 7, 2015, 2:08 PM CDT for Freeborn County, Minnesota. It was in force for 52 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
Apr 7, 2015, 2:08 PM CDT (19:08 UTC)
Expired
Apr 7, 2015, 3:00 PM CDT
In force
52 min
Issued by
NWS Twin Cities, MN

County Freeborn County, MN

The radar

The Minneapolis radar (KMPX), 118 km from the middle of the area, began a volume at 19:09 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 7, 2:25 PM CDTHAIL 1Hartland, MNPHOTO OF QUARTER SIZE HAIL RECEIVED VIA TWITTER. TIME OF EVENT 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 12:00Z, 7.1 hours before the alert went out and 118 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 12:00Z on 2015-04-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 joules per kilogram.LCLEL10008507005003002001001 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 12:00Z on 2015-04-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 126 square meters per square second.1939587897Sfc1 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
546 m above ground
0-6 km bulk shear
45 kt
0-1 km storm-relative helicity
126 m²/s²
0-3 km storm-relative helicity
239 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.

165 
WWUS83 KMPX 071908
SPSMPX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
208 PM CDT TUE APR 7 2015
 
MNZ083>085-092-093-072000-
FARIBAULT-WASECA-BLUE EARTH-FREEBORN-STEELE-
208 PM CDT TUE APR 7 2015

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWESTERN STEELE...
SOUTHEASTERN BLUE EARTH...NORTHEASTERN FARIBAULT...NORTHERN FREEBORN
AND SOUTHERN WASECA COUNTIES THROUGH 3 PM CDT...

AT 208 PM CDT...A STRONG THUNDERSTORM WAS OVER BARODA...OR 14 MILES
WEST OF ALBERT LEA...MOVING NORTHEAST AT 35 MPH.

HALF INCH HAIL IS POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
WELLS...NEW RICHLAND...CLARKS GROVE...ELLENDALE...MINNESOTA LAKE...
ALDEN...GENEVA...HARTLAND...FREEBORN...WALDORF...OTISCO AND LEMOND.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY CAN RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
OFFICE IN THE TWIN CITIES.

LAT...LON 4361 9370 4369 9380 4377 9384 4386 9391
      4395 9377 4399 9334 4384 9305
TIME...MOT...LOC 1908Z 217DEG 29KT 4370 9365 
$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 7, 1:12 PM CDTSpecial Weather StatementMPXBlue Earth, Brown, Faribault, Martin, Watonwan63 min
Apr 7, 1:26 PM CDTSevere Thunderstorm WarningMPXMartin34 min
Apr 7, 1:59 PM CDTSpecial Weather StatementMPXBlue Earth46 min
Apr 7, 2:49 PM CDTSpecial Weather StatementMPXSteele26 min

Nearby

Special Weather Statements in Minnesota, 2015Every special weather statement 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.