Alert archive / Minnesota / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 83, NWS Duluth, MN

June 7, 2011Carlton County, Saint Louis County, Minnesota; Douglas County, Wisconsin

NWS Duluth, MN issued this severe thunderstorm warning at Jun 7, 2011, 2:23 AM CDT for Carlton County, Saint Louis County, Minnesota; Douglas County, Wisconsin. 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: Jun 7, 2011, 2:23 AM CDT (07:23 UTC)
Expired: Jun 7, 2011, 3:15 AM CDT
In force: 52 min
Issued by: NWS Duluth, MN
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

Counties Carlton County, MN, Saint Louis County, MN, Douglas County, WI

The radar

The Duluth radar (KDLH), 15 km from the middle of the area, began a volume at 07:25 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
Jun 7, 2:55 AM CDT	HAIL 1	6 Nnw Duluth, MN	LARGEST STONES QUARTER SIZE. HAIL FELL FOR 5 MINUTES.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 32 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 7.4 hours before the alert went out and 219 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: 17 J/kg
Mixed-layer CIN: -168 J/kg
Mixed-layer LCL: 1618 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 100 m²/s²
0-3 km storm-relative helicity: 232 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.

162 
WUUS53 KDLH 070723
SVRDLH
MNC017-137-WIC031-070815-
/O.NEW.KDLH.SV.W.0083.110607T0723Z-110607T0815Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DULUTH MN
223 AM CDT TUE JUN 7 2011

THE NATIONAL WEATHER SERVICE IN DULUTH MN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN CARLTON COUNTY IN NORTHEAST MINNESOTA...
  SOUTHEASTERN ST. LOUIS COUNTY IN NORTHEAST MINNESOTA...
  NORTHEASTERN DOUGLAS COUNTY IN NORTHWEST WISCONSIN...

* UNTIL 315 AM CDT

* AT 220 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
  LOCATED NEAR INDEPENDENCE...OR 22 MILES NORTHWEST OF DULUTH...AND
  MOVING EAST AT 50 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  FISH LAKE AND TWIG AROUND 230 AM CDT.
  FREDENBERG AND ISLAND LAKE AROUND 235 AM.
  WILD RICE LAKE AROUND 240 AM.
  ARNOLD AROUND 245 AM.
  DULUTH...PROCTOR AND HERMANTOWN AROUND 250 AM.
  FRENCH RIVER AND PALMERS AROUND 255 AM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4671 9233 4685 9268 4718 9240 4700 9180
      4691 9180 4690 9187 4678 9208 4675 9208
      4671 9203 4669 9192 4670 9179 4676 9157
      4654 9169
TIME...MOT...LOC 0722Z 286DEG 43KT 4698 9244
WIND...HAIL 60MPH 1.50IN

$$

MELDE

2 follow-up statements

979 
WWUS53 KDLH 070746
SVSDLH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
246 AM CDT TUE JUN 7 2011

MNC017-137-WIC031-070815-
/O.CON.KDLH.SV.W.0083.000000T0000Z-110607T0815Z/
CARLTON MN-DOUGLAS WI-ST. LOUIS MN-
246 AM CDT TUE JUN 7 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
ST. LOUIS...NORTHEASTERN DOUGLAS AND NORTHEASTERN CARLTON COUNTIES
UNTIL 315 AM CDT...

AT 243 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
HERMANTOWN...OR 9 MILES NORTHWEST OF DULUTH...MOVING SOUTHEAST AT 35 
MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  HERMANTOWN AROUND 245 AM CDT.
  DULUTH...ARNOLD...PROCTOR AND WEST DULUTH AROUND 250 AM.
  SUPERIOR AROUND 305 AM.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4671 9233 4685 9268 4718 9240 4700 9180
      4691 9180 4690 9187 4678 9208 4675 9208
      4671 9203 4669 9192 4670 9179 4676 9157
      4654 9169
TIME...MOT...LOC 0745Z 300DEG 32KT 4686 9224
WIND...HAIL 60MPH 1.00IN

$$

MELDE

814 
WWUS53 KDLH 070811
SVSDLH

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
311 AM CDT TUE JUN 7 2011

MNC017-137-WIC031-070821-
/O.EXP.KDLH.SV.W.0083.000000T0000Z-110607T0815Z/
CARLTON MN-DOUGLAS WI-ST. LOUIS MN-
311 AM CDT TUE JUN 7 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ST. LOUIS...
NORTHEASTERN DOUGLAS AND NORTHEASTERN CARLTON COUNTIES WILL EXPIRE AT
315 AM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

LAT...LON 4671 9233 4685 9268 4718 9240 4700 9180
      4691 9180 4690 9187 4678 9208 4675 9208
      4671 9203 4669 9192 4670 9179 4676 9157
      4654 9169
TIME...MOT...LOC 0811Z 300DEG 32KT 4679 9182

$$

MELDE

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Duluth, MN wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 7, 12:42 AM CDT, 1 hour 41 minutes earlier.

Area forecast discussion, Jun 7, 12:42 AM CDT, 1 hour 41 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DULUTH MN
1242 AM CDT TUE JUN 7 2011

.AVIATION...06/07/06Z ISSUANCE...
MAINLY VFR CONDITIONS ARE EXPECTED THROUGH THE PERIOD. THE
EXCEPTIONS WILL CONTINUE TO BE SOME LOCAL IFR/MVFR CONDITIONS WITH
ANY THUNDERSTORMS...AND SOME FOG AROUND LAKE SUPERIOR TONIGHT.

SCATTERED SHOWERS AND THUNDERSTORMS WILL OCCUR TONIGHT...AND SOME
MAY BE SEVERE PRODUCING LARGE HAIL AND DAMAGING WINDS. A WARM FRONT
WILL BE LIFTING NORTH TONIGHT...AND WILL CONTINUE NORTH ON TUESDAY.
MUCH OF THE NORTHLAND MAY BE CAPPED ON TUESDAY INTO THE EVENING...
WITH FAR NORTHERN MINNESOTA MOST LIKELY TO SEE STORMS TUESDAY
AFTERNOON/EVENING.

&&

.PREV DISCUSSION... /ISSUED 831 PM CDT MON JUN 6 2011/

DISCUSSION...

THUNDERSTORMS HAVE ENDED FOR THE TIME BEING. THERE ARE SEVERAL
SURFACE FEATURES OF NOTE...ONE IS A WEAKENING COOL FRONT FROM FAR
NORTHEAST MINNESOTA SOUTHWEST INTO SOUTHEAST SOUTH DAKOTA...WITH
THE OTHER A WARM FRONT/STATIONARY FRONT THAT EXTENDS FROM SOUTHERN
MINNESOTA BACK INTO SOUTH DAKOTA. THE SURFACE FLOW AROUND THE WARM
FRONT IN SOUTHERN MINNESOTA HAS SHARPENED OVER THE LAST FEW
HOURS...WITH MUCH OF SOUTHERN MINNESOTA STILL 90-95F WITH SOUTHERLY
WINDS...AND EAST-NORTHEAST WINDS AT KAQP/KBDH/KLJH/KCFE NORTH OF
THE FRONT.

THERE IS STILL A LARGE AREA OF MUCAPE OF 2000-4000J/KG OVER
MINNESOTA/WISCONSIN THIS EVENING...WITH 40-50KT OF DEEP LAYER
SHEAR. CONDITIONS SUPPORT SEVERE STORMS OVERNIGHT...GIVEN WE GET
STRONGER LIFT INTO OUR CWA WHICH SHOULD HAPPEN. BOTH THE
KINL/KMPX SOUNDINGS HAD AROUND 100J/KG OF CIN AT 00Z...BUT A
MODIFIED SOUNDING AT KINL FOR WARMER AND MOISTURE LOW LEVEL
CONDITIONS SHOWED LITTLE CIN AND THAT WAS OBVIOUSLY SUPPORTED BY
THE SEVERE STORM THAT TRACKED ACROSS CASS/NORTHERN CROW WING
COUNTIES EARLIER THIS EVENING.

THE CHANCE FOR SEVERE STORMS LOOKS TO INCREASE LATER TONIGHT AS
THE LOW LEVEL JET DEVELOPS AND PUSHES THE WARM FRONT FURTHER
NORTH. NAM SHOWS NOSE OF LLJ AFFECTING OUR SOUTHERN CWA BETWEEN
08-10Z...WITH A TIGHTENING THERMAL GRADIENT ALONG THE WARM FRONT.
AS DISCUSSED IN THE SWODY1...MCS WILL BE POSSIBLE LATE
TONIGHT...QUESTION IS WHAT AREA WILL GET HIT. WE HAVE THE HIGHEST
POPS ALONG THE SOUTH HALF OF THE CWA...AND WE WILL LEAVE THEM AS
IS FOR NOW...AND UPDATE LATE TONIGHT AS NEEDED TO ADJUST POPS.

PREV DISCUSSION... /ISSUED 650 PM CDT MON JUN 6 2011/

DISCUSSION...

ONE MAIN STORM WAS AFFECTING OUR CWA AS OF 645 PM CDT...AND THAT
WAS OVER CASS COUNTY AND HAS PRODUCED HALF DOLLAR SIZE HAIL AROUND
630 PM. IT'S IN AN AREA OF 2000J/KG CAPE AND 40-45KT DEEP LAYER
SHEAR...AND WAS FORCED BY WEAK LOW LEVEL CONVERGENCE ALONG A COLD
FRONT. STORM COVERAGE WILL BE A QUESTION MARK THIS EVENING WITH
FORCING RATHER WEAK UNTIL LOW LEVEL JET INCREASES LATER TONIGHT.
OVERALL...THE NAM DECREASES THE SURFACE CONVERGENCE AS IT VEERS
WINDS AROUND TO MORE EASTERLY OVERNIGHT WITH BETTER CONVERGENCE
SOUTH OF OUR CWA. HOWEVER...INCREASING LOW LEVEL JET OVER
ADVANCING WARM FRONT SHOULD INCREASE STORM COVERAGE OVERNIGHT.

PREV DISCUSSION... /ISSUED 342 PM CDT MON JUN 6 2011/

DISCUSSION...

WARM FRONTAL BOUNDARY OVER CENTRAL MINNESOTA AND NORTHERN
WISCONSIN WILL BE INITIAL FOCUS FOR THE SHOWER AND THUNDERSTORM
CHANCES THIS EVENING. ONGOING CONVECTION OVER THE WESTERN UPPER
PENINSULA OF MICHIGAN COULD FORM WESTWARD ALONG AND NORTH OF THE
WARM FRONT LATE THIS AFTERNOON AFFECTING IRON AND PRICE COUNTIES
LATE THIS AFTERNOON INTO THIS EVENING. FOCUS THEN SHIFTS TO LOW
PRESSURE OVER THE NORTHERN ROCKIES THAT WILL TRY TO ADVANCE THE
WARM FRONT FURTHER NORTH. PROJECTED RADAR REFLECTIVITIES FROM THE
HRRR AND THE 4KM WRF DEVELOP AN AREA OF SHOWERS AND THUNDERSTORMS
EARLY THIS OVER EAST CENTRAL SOUTH DAKOTA. THE STORMS ARE EXPECTED
TO ORGANIZE AND EXPAND IN COVERAGE ALONG THE WARM FRONT AFTER
MIDNIGHT ACROSS THE SOUTHERN THIRD OF THE CWA.

CONVECTION WILL EXIT THE NORTHWESTERN WISCONSIN COUNTIES TUESDAY
MORNING. LARGE RANGE IN TEMPERATURES AS OUR SOUTHERN TIER
COUNTIES...SOUTH OF THE WARM FRONT...WILL HAVE HIGH TEMPERATURES
IN THE LOWER 90S. HIGHS ALONG THE NORTH SHORE WILL ONLY BE IN 60S
WITH A STRONG EAST WIND. A COLD FRONT WILL DROP SOUTH FROM CANADA
AND WILL BE THE FOCUS FOR SHOWER AND THUNDERSTORM DEVELOPMENT
TUESDAY MORNING FOR OUR FAR NORTHWESTERN ZONES. QUESTION REMAINS
IF THUNDERSTORMS COULD BREAK THE CAP THAT WILL BE IN PLACE SOUTH
OF THE WARM FRONT. MODELS TRENDING ON THE CAP HOLDING FIRM. DID
KEEP A SLIGHT CHANCE OF THUNDERSTORMS FOR THE THE SOUTHEASTERN TWO
THIRDS OF THE CWA AS STORMS MAY FIRE AT THE BOUNDARY OF THE
EASTERLY WINDS IN THE AFTERNOON. ANY STORMS THAT DO
FORM MIGHT BE SEVERE...ESPECIALLY OVER NORTHWESTERN WISCONSIN WITH
SOME 4000 J/KG TO WORK WITH. MOST OF THE CWA IS UNDER A SLIGHT
RISK FOR THE DAY ONE CONVECTIVE OUTLOOK FROM SPC.

LOW PRESSURE LIFTS INTO EXTREME SOUTHERN ONTARIO BY WEDNESDAY MORNING.
FRONTAL BOUNDARY STALLS OVER CENTRAL WISCONSIN AND WILL CONTINUE
THE SHOWER AND THUNDERSTORM CHANCES FOR PRICE AND IRON COUNTIES.
RAIN SHOWERS ON THE BACK SIDE OF THIS LOW WILL MOVE INTO THE
BORDERLAND ON WEDNESDAY. MUCH COOLER AND DRIER CONDITIONS ON TAP
FOR ALL OF THE NORTHLAND ON THURSDAY AS A WEAK RIDGE OF HIGH
PRESSURE BUILDS IN FROM THE NORTHERN PLAINS.

EXTENDED...THURSDAY NIGHT THROUGH MONDAY

WESTERLIES WILL STRETCH ACROSS NRN ROCKIES AND INTO GT LAKES THIS
PERIOD WITH INCREASING CHANCE OF RW/TRW DEVELOPING BY END OF WEEK.
ALL MDLS TAKE A MIGRATORY SHORTWAVE TROF EAST FROM NRN PLAINS INTO
CWA FRIDAY NIGHT/SATURDAY. HAVE RESHAPED/ADJUSTED COVERAGE OF
PREVIOUS POPS TO ACCOUNT FOR LATEST MDL CONSENSUS. HIGHEST POPS
OCCUR FRI NIGHT/EARLY SAT OVER SOUTH/EASTERN CWA IN AREA OF BETTER
LOW LEVEL CONVERGENCE IN BDRY LYR. USED ISO TRW IN GRIDS AS LATEST
MDL FCSTS ARE NOT VERY SIGNIFICANT WITH RESPECT TO DEEP LAYER
SHEAR/SBCAPE/MUCAPE. MAX TEMPS NEAR/SLIGHTLY BELOW NORMAL IN MOST
OF CWA FRI/SAT BEFORE WARMING DEVELOPS UNDERNEATH BUILDING MID LVL
RIDGE. ONSHORE FLOW IN LOW LEVELS WILL KEEP NEAR LAKE COMMUNITIES
COOLER THROUGH THE PERIOD.

&&

.POINT TEMPS/POPS...
DLH  60  71  41  53 /  30  10  10  10
INL  57  60  35  63 /  40  30  10  10
BRD  63  71  46  66 /  10  10  10  10
HYR  68  83  42  67 /  20  10  10  10
ASX  66  80  43  62 /  20  10  10  10

&&

.DLH WATCHES/WARNINGS/ADVISORIES...
MN...NONE.
WI...NONE.
LS...NONE.
&&

SHORT TERM...BERDES
EXTENDED....EOM
AVIATION...EOM

Hazardous weather outlook, Jun 6, 4:01 PM CDT, 10 hours 22 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DULUTH MN
401 PM CDT MON JUN 6 2011

MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-071030-
KOOCHICHING-NORTHERN ST. LOUIS-NORTHERN COOK/NORTHERN LAKE-
NORTHERN ITASCA-CENTRAL ST. LOUIS-SOUTHERN LAKE/LAKESHORE-
SOUTHERN COOK/LAKESHORE-NORTHERN CASS-SOUTHERN ITASCA-
SOUTHERN CASS-CROW WING-NORTHERN AITKIN-SOUTHERN AITKIN-
CARLTON/SOUTHERN ST. LOUIS-PINE-DOUGLAS-BAYFIELD-ASHLAND-IRON-
BURNETT-WASHBURN-SAWYER-PRICE-
401 PM CDT MON JUN 6 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST MINNESOTA AND
NORTHWEST WISCONSIN.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THERE IS A CHANCE OF THUNDERSTORMS TONIGHT OVER THE ENTIRE NORTHLAND.
SOME THUNDERSTORMS MAY BECOME SEVERE...ESPECIALLY AFTER MIDNIGHT
ACROSS THE BRAINERD LAKES REGION THROUGH THE ST. CROIX RIVER
VALLEY. THE MAIN THREAT WILL BE LARGE HAIL...DAMAGING WINDS AND
LOCALLY HEAVY RAINS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THERE IS A CHANCE OF THUNDERSTORMS TUESDAY AND TUESDAY NIGHT. SOME
THUNDERSTORMS MAY BECOME SEVERE. THE MAIN SEVERE WEATHER THREAT
WILL BE LARGE HAIL...DAMAGING WINDS...LOCALLY HEAVY RAINS AND
ISOLATED TORNADOES.

.SPOTTER INFORMATION STATEMENT...

SKYWARN SPOTTER ACTIVATION MAY BE NEEDED LATE TONIGHT.

LSZ121-140>148-071030-
BAYFIELD TO OAK POINT WI-GRAND PORTAGE TO GRAND MARAIS MN-
GRAND MARAIS TO TACONITE HARBOR MN-
TACONITE HARBOR TO SILVER BAY HARBOR MN-
SILVER BAY HARBOR TO TWO HARBORS MN-TWO HARBORS TO DULUTH MN-
DULUTH MN TO PORT WING WI-PORT WING TO SAND ISLAND WI-
SAND ISLAND TO BAYFIELD WI-OAK POINT TO SAXON HARBOR WI-
401 PM CDT MON JUN 6 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE NEARSHORE WATERS OF
WESTERN LAKE SUPERIOR.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THERE IS A CHANCE OF THUNDERSTORMS LATE TONIGHT OVER WESTERN LAKE
SUPERIOR. SOME OF THE THUNDERSTORMS MAY BECOME SEVERE.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THERE IS A CHANCE OF THUNDERSTORMS TUESDAY AND TUESDAY NIGHT OVER
WESTERN LAKE SUPERIOR. SOME OF THE THUNDERSTORMS MAY AGAIN BECOME
SEVERE.

KK

MORE INFORMATION MAY BE OBTAINED AT THE FOLLOWING WEB ADDRESS:
HTTP://WWW.WEATHER.GOV/DULUTH (ALL LOWER CASE)

In the hours before

Special weather statement, Jun 7, 1:30 AM CDT, 53 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
130 AM CDT TUE JUN 7 2011

WIZ002-070650-
BAYFIELD-
130 AM CDT TUE JUN 7 2011

...STRONG THUNDERSTORM IN THE BAYFIELD PENINSULA...

AT 125 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 10 MILES NORTHWEST OF BARKSDALE...MOVING EAST AT
40 MPH.

THIS STORM IS CAPABLE OF PRODUCING UP TO PENNY SIZE HAIL...WIND GUSTS
UP TO 40 MPH...OCCASIONAL CLOUD TO GROUND LIGHTNING...BRIEF HEAVY
DOWNPOURS...

* THE THUNDERSTORM WILL BE NEAR...
  WASHBURN AND BARKSDALE BY 140 AM...

STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS TREES. SEEK SHELTER IN
A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED.

LAT...LON 4664 9123 4677 9122 4686 9077 4679 9080
      4675 9086 4672 9084 4666 9087 4665 9089
      4660 9090

LAMERS

Special weather statement, Jun 7, 1:34 AM CDT, 49 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
134 AM CDT TUE JUN 7 2011

MNZ019-020-026-037-070715-
CARLTON/SOUTH ST. LOUIS-CENTRAL ST. LOUIS-SOUTH ITASCA-SOUTHERN
LAKE/NORTH SHORE-
134 AM CDT TUE JUN 7 2011

...LINE OF STRONG THUNDERSTORMS BETWEEN GRAND RAPIDS AND FRENCH
RIVER...

AT 130 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM WARBA TO FRENCH
RIVER...MOVING EAST AT 35 MPH.

A FEW OF THE STORMS WILL BE CAPABLE OF PRODUCING UP TO PENNY SIZE
HAIL...AND WIND GUSTS UP TO 40 MPH. ALL OF THE STORMS WILL PRODUCE
FREQUENT LIGHTNING AND TORRENTIAL RAIN.

THESE STORMS WERE MOVING CONTINUOUSLY OVER THE SAME AREAS...WHICH
MAY CONTRIBUTE TO SOME MINOR FLOODING OF URBAN AREAS AND LOW LYING
AREAS.

LOCATIONS IMPACTED INCLUDE...
  ELMER...              SILICA...             CANYON...
  PALMERS...            TOIVOLA...            PAYNE...
  ISLAND LAKE...        BOULDER LAKE...       TWO HARBORS...
  SHAW...               LARSMONT...           KNIFE RIVER...
  KELSEY...             COTTON...

STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS TREES. SEEK SHELTER IN
A STURDY STRUCTURE UNTIL THESE STORMS HAVE PASSED.

LAT...LON 4710 9342 4737 9317 4703 9161 4701 9163
      4699 9169 4691 9180 4690 9187 4686 9192
      4682 9202

LAMERS

Local storm report, Jun 7, 1:50 AM CDT, 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
150 AM CDT TUE JUN 07 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0140 AM     HAIL             6 W GRAND RAPIDS        47.23N 93.65W
06/07/2011  E0.88 INCH       ITASCA             MN   PUBLIC

&&

LAMERS

Local storm report, Jun 7, 1:52 AM CDT, 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
152 AM CDT TUE JUN 07 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0142 AM     HAIL             COHASSET                47.26N 93.62W
06/07/2011  M1.25 INCH       ITASCA             MN   TRAINED SPOTTER

            MEASURED LARGEST STONE TO BE HALF DOLLAR SIZE.

&&

LAMERS

Local storm report, Jun 7, 1:59 AM CDT, 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
159 AM CDT TUE JUN 07 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0150 AM     HAIL             GRAND RAPIDS            47.23N 93.52W
06/07/2011  E0.75 INCH       ITASCA             MN   TRAINED SPOTTER

&&

LAMERS

Special weather statement, Jun 7, 2:08 AM CDT, 15 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
208 AM CDT TUE JUN 7 2011

WIZ002-070745-
BAYFIELD-
208 AM CDT TUE JUN 7 2011

...MORE STRONG STORMS MOVING ACROSS NORTHERN BAYFIELD COUNTY...

AT 207 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR PORT WING...MOVING EAST AT 45 MPH.

THIS STORM IS CAPABLE OF PRODUCING UP TO PENNY SIZE HAIL...WIND GUSTS
UP TO 40 MPH...OCCASIONAL CLOUD TO GROUND LIGHTNING...

* THE THUNDERSTORM WILL BE NEAR...
  HERBSTER BY 215 AM...
  MOQUAH BY 235 AM...
  BARKSDALE AND WASHBURN BY 240 AM...

STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS TREES. SEEK SHELTER IN
A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED.

LAT...LON 4667 9155 4677 9151 4680 9141 4680 9138
      4684 9129 4677 9084 4673 9084 4650 9100

LAMERS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 6, 10:32 PM CDT	Special Weather Statement	DLH	Pine	28 min
Jun 6, 10:54 PM CDT	Special Weather Statement	DLH	Cass	81 min
Jun 6, 10:59 PM CDT	Special Weather Statement	DLH	Pine	31 min
Jun 6, 11:31 PM CDT	Special Weather Statement	DLH	Pine	44 min
Jun 6, 11:39 PM CDT	Special Weather Statement	DLH	Itasca	96 min
Jun 6, 11:45 PM CDT	Severe Thunderstorm Warning	DLH	Pine	27 min
Jun 7, 12:06 AM CDT	Areal Flood Advisory	DLH	Cass, Itasca	3 hr
Jun 7, 1:02 AM CDT	Severe Thunderstorm Warning	DLH	Cass, Itasca	43 min
Jun 7, 1:34 AM CDT	Special Weather Statement	DLH	Saint Louis	41 min
Jun 7, 1:37 AM CDT	Severe Thunderstorm Warning	DLH	Itasca, Saint Louis	53 min
Jun 7, 1:38 AM CDT	Special Marine Warning	DLH		52 min
Jun 7, 1:54 AM CDT	Severe Thunderstorm Warning	DLH	Itasca, Saint Louis	51 min
Jun 7, 1:58 AM CDT	Severe Thunderstorm Warning	DLH	Saint Louis	47 min
Jun 7, 2:21 AM CDT	Special Marine Warning	DLH		69 min
Jun 7, 3:18 AM CDT	Small Craft Advisory	DLH		20 hr
Jun 7, 3:55 AM CDT	Severe Thunderstorm Warning	DLH	Saint Louis	20 min
Jun 7, 6:52 AM CDT	Special Weather Statement	DLH	Saint Louis	38 min
Jun 7, 7:25 AM CDT	Special Weather Statement	DLH	Lake, Saint Louis	80 min
Jun 7, 7:31 AM CDT	Special Weather Statement	DLH	Itasca, Koochiching	59 min
Jun 7, 8:04 AM CDT	Severe Thunderstorm Warning	DLH	Koochiching	41 min
Jun 7, 8:41 AM CDT	Special Weather Statement	DLH	Lake	49 min
Jun 7, 9:04 AM CDT	Special Weather Statement	DLH	Koochiching	26 min
Jun 7, 9:13 AM CDT	Special Marine Warning	DLH		62 min
Jun 7, 9:29 AM CDT	Special Weather Statement	DLH	Koochiching	31 min
Jun 7, 9:48 AM CDT	Special Weather Statement	DLH		27 min
Jun 7, 9:53 AM CDT	Special Weather Statement	DLH		22 min
Jun 7, 10:02 AM CDT	Special Weather Statement	DLH		43 min
Jun 7, 12:19 AM CDT	Special Weather Statement	DLH	Washburn	41 min
Jun 7, 1:30 AM CDT	Special Weather Statement	DLH	Bayfield	20 min
Jun 7, 1:45 AM CDT	Severe Thunderstorm Warning	DLH	Ashland, Bayfield	30 min
Jun 7, 2:08 AM CDT	Special Weather Statement	DLH	Bayfield	37 min
Jun 7, 2:59 AM CDT	Special Weather Statement	DLH	Bayfield	46 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2011 Severe Thunderstorm Warnings in Wisconsin, 2011 Every severe thunderstorm warning in 2011

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.