Alert archive / Minnesota / Special Weather Statements in 2016

Special Weather Statement, NWS Duluth, MN

July 12, 2016

NWS Duluth, MN issued this special weather statement at Jul 12, 2016, 10:10 PM CDT. It was in force for 35 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 12, 2016, 10:10 PM CDT (03:10 UTC)
Expired: Jul 12, 2016, 10:45 PM CDT
In force: 35 min
Issued by: NWS Duluth, MN

The radar

The Duluth radar (KDLH), 168 km from the middle of the area, began a volume at 03:10 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 nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 3.2 hours before the alert went out and 73 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: 294 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 1275 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 160 m²/s²
0-3 km storm-relative helicity: 174 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

As transmitted.

062 
WWUS83 KDLH 130310
SPSDLH

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
1010 PM CDT TUE JUL 12 2016
 
MNZ011-130345-
NORTH ST. LOUIS-
1010 PM CDT TUE JUL 12 2016

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN ST. LOUIS COUNTY...

AT 1010 PM CDT...A STRONG THUNDERSTORM WAS 7 MILES NORTHEAST OF ASH
LAKE...OR 10 MILES SOUTH OF VOYAGEURS NATIONAL PARK...MOVING EAST AT
55 MPH.

WIND GUSTS UP TO 45 MPH...DIME SIZE HAIL...AND OCCASIONAL CLOUD TO
GROUND LIGHTNING CAN BE EXPECTED WITH THIS STORM.

THIS STORM WILL BE NEAR...
  NORTHWESTERN BOUNDARY WATERS CANOE AREA WILDERNESS AROUND 1045 PM 
  CDT. 

OTHER LOCATIONS IMPACTED BY THIS STORM INCLUDE SAND POINT LAKE AND
LAC LA CROIX.

SEEK SHELTER INSIDE A STURDY BUILDING AND AWAY FROM WINDOWS UNTIL
THIS STORM PASSES.

LAT...LON 4841 9245 4837 9248 4835 9247 4829 9241
      4831 9231 4836 9226 4834 9221 4835 9220
      4835 9218 4836 9215 4836 9214 4835 9211
      4833 9209 4820 9293 4834 9296 4842 9247
TIME...MOT...LOC 0310Z 252DEG 48KT 4831 9286 
$$

DAP

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 12, 9:29 PM CDT	Special Weather Statement	DLH		31 min
Jul 12, 9:43 PM CDT	Severe Thunderstorm Warning	DLH	Koochiching, Saint Louis	32 min
Jul 13, 3:26 AM CDT	Small Craft Advisory	DLH		19 hr
Jul 12, 11:22 PM CDT	Areal Flood Advisory	DLH	Douglas	24 hr
Jul 12, 11:39 PM CDT	Areal Flood Advisory	DLH	Ashland	24 hr
Jul 13, 12:14 PM CDT	Special Weather Statement	DLH	Price	31 min
Jul 13, 1:00 PM CDT	Special Weather Statement	DLH	Iron	15 min

Nearby

Special Weather Statements in Minnesota, 2016 Every special weather statement in 2016

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.