Alert archive / Minnesota / Tornado Warnings in 2012

Tornado Warning 4, NWS Duluth, MN

June 18, 2012Saint Louis County, Minnesota

NWS Duluth, MN issued this tornado warning at Jun 18, 2012, 1:59 PM CDT for Saint Louis County, Minnesota. It was in force for 13 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
Jun 18, 2012, 1:59 PM CDT (18:59 UTC)
Expired
Jun 18, 2012, 2:12 PM CDT
In force
13 min
Issued by
NWS Duluth, MN
Area
Storm-based polygon

County Saint Louis County, MN

The radar

The Duluth radar (KDLH), 166 km from the middle of the area, began a volume at 18:59 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 12:00Z, 7.0 hours before the alert went out and 90 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, International Fa, MN at 12:00Z on 2012-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 520 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, International Fa, MN at 12:00Z on 2012-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 97 square meters per square second.1939587897117Sfc1 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
520 J/kg
Mixed-layer CIN
-56 J/kg
Mixed-layer LCL
521 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
97 m²/s²
0-3 km storm-relative helicity
49 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.4

Open this sounding in Storm Lab

The text

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

375 
WFUS53 KDLH 181859
TORDLH
MNC137-181915-
/O.NEW.KDLH.TO.W.0004.120618T1859Z-120618T1915Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DULUTH MN
159 PM CDT MON JUN 18 2012

THE NATIONAL WEATHER SERVICE IN DULUTH MN HAS ISSUED A

* TORNADO WARNING FOR...
  NORTH CENTRAL ST. LOUIS COUNTY IN NORTHEAST MINNESOTA...

* UNTIL 215 PM CDT

* AT 156 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED
  A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR LAC
  LA CROIX...OR 34 MILES NORTHWEST OF ELY...MOVING EAST AT 30 MPH.

* THE MOST DANGEROUS PORTION OF THIS STORM WILL AFFECT AREAS
  OF THE BOUNDARY WATERS CANOE AREA NEAR LAC LA CROIX.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO
COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

&&

LAT...LON 4835 9212 4836 9211 4836 9205 4832 9199
      4828 9200 4825 9195 4825 9229 4832 9232
      4835 9230 4836 9225 4835 9220 4837 9215
TIME...MOT...LOC 1856Z 268DEG 27KT 4833 9219

$$
 MILLER
2 follow-up statements
376 
WWUS53 KDLH 181903
SVSDLH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
203 PM CDT MON JUN 18 2012

MNC137-181915-
/O.CON.KDLH.TO.W.0004.000000T0000Z-120618T1915Z/
ST. LOUIS MN-
203 PM CDT MON JUN 18 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR FAR NORTHERN ST. LOUIS 
COUNTY UNTIL 215 PM CDT...

AT 202 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS 
STORM WAS LOCATED OVER THE FAR NORTHWEST PORTION OF THE BOUNDARY 
WATERS CANOE AREA...NEAR BOULDER BAY AND KELSEY LAKE...OR 29 
MILES NORTH OF ELY...MOVING EAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  TOE LAKE
  BOULDER BAY
  KELSEY LAKE.

LAT...LON 4825 9216 4835 9216 4835 9212 4836 9211
      4836 9205 4832 9199 4828 9200 4825 9195
TIME...MOT...LOC 1902Z 273DEG 43KT 4829 9201

$$
 MILLER
012 
WWUS53 KDLH 181912
SVSDLH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
212 PM CDT MON JUN 18 2012

MNC137-181920-
/O.CAN.KDLH.TO.W.0004.000000T0000Z-120618T1915Z/
ST. LOUIS MN-
212 PM CDT MON JUN 18 2012

...THE TORNADO WARNING FOR EXTREME NORTHERN ST. LOUIS COUNTY IS 
CANCELLED...

THE SEVERE STORM WHICH PROMPTED THE WARNING HAS MOVED EAST INTO 
EXTREME SOUTHERN ONTARIO TO THE EAST OF LAC LA CROIX AND BOULDER BAY.

SHOWERS AND THUNDERSTORMS WILL PERSIST ACROSS FAR NORTHERN ST. LOUIS 
COUNTY THROUGH AT LEAST 230 PM CDT...BUT ADDITIONAL SEVERE STORMS 
ARE NOT IMMINENT AT THE PRESENT TIME.

LAT...LON 4825 9216 4835 9216 4835 9212 4836 9211
      4836 9205 4832 9199 4828 9200 4825 9195
TIME...MOT...LOC 1910Z 268DEG 27KT 4832 9203

$$
 MILLER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 17, 7:10 PM CDTSpecial Weather StatementDLHAitkin, Crow Wing35 min
Jun 17, 7:32 PM CDTSpecial Weather StatementDLHCass28 min
Jun 17, 7:42 PM CDTSpecial Weather StatementDLHCarlton18 min
Jun 17, 7:59 PM CDTSpecial Weather StatementDLHAitkin31 min
Jun 17, 8:04 PM CDTSpecial Weather StatementDLHCass26 min
Jun 17, 8:07 PM CDTSpecial Weather StatementDLHCarlton23 min
Jun 17, 8:38 PM CDTSpecial Weather StatementDLHCarlton22 min
Jun 17, 8:39 PM CDTSpecial Weather StatementDLHItasca36 min
Jun 17, 8:46 PM CDTSpecial Weather StatementDLHItasca29 min
Jun 17, 10:51 PM CDTSpecial Weather StatementDLHPine39 min
Jun 18, 11:02 AM CDTSpecial Weather StatementDLH28 min
Jun 18, 12:28 PM CDTSpecial Weather StatementDLHKoochiching32 min
Jun 18, 12:40 PM CDTSpecial Weather StatementDLHKoochiching20 min
Jun 18, 12:44 PM CDTSevere Thunderstorm WarningDLHSaint Louis31 min
Jun 18, 1:16 PM CDTSevere Thunderstorm WarningDLHSaint Louis29 min
Jun 18, 1:34 PM CDTRiver Flood WatchDLHAitkin6 days
Jun 18, 1:50 PM CDTSevere Thunderstorm WarningDLHSaint Louis25 min
Jun 18, 1:52 PM CDTSevere Thunderstorm WarningDLHSaint Louis23 min
Jun 18, 2:28 PM CDTSpecial Weather StatementDLHCook17 min
Jun 18, 2:55 PM CDTSevere Thunderstorm WarningDLHCook, Lake33 min
Jun 18, 3:26 PM CDTSpecial Weather StatementDLHCook19 min
Jun 18, 3:33 PM CDTFlash Flood WatchDLHAitkin, Carlton, Cass, Cook, Crow Wing, Itasca and 3 more45 hr
Jun 18, 4:19 PM CDTSpecial Weather StatementDLH26 min
Jun 18, 4:56 PM CDTSpecial Weather StatementDLHCook49 min
Jun 18, 4:58 PM CDTSpecial Weather StatementDLHCook47 min

Nearby

Tornado Warnings in Minnesota, 2012Every tornado warning in 2012Tornadoes 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.