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As the low reached its peak intensity over north central Minnesota late in the day on October 26th, the pressure gradient increased across the southern and eastern parts of our area. Winds are driven by differences in air pressure. Therefore, strong winds - generally from a westerly direction - developed in the afternoon and evening of October 26th. Some of the gusts were very strong. We had 15 different sites report wind gusts in excess of 50 mph. The strongest gust was 65 mph on the Blatnik Bridge that connects Duluth and Superior. It should be noted that the bridge rises about 100 feet above the water, and the increased elevation of the instrument likely contributed to stronger winds at that particular location.

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
1125 AM CDT WED OCT 27 2010

...MAXIMUM WIND GUSTS FROM ACROSS THE AREA OCT 26-27...

A VERY POWERFUL LOW AFFECTED THE NORTHLAND ON TUESDAY AND WEDNESDAY
OCTOBER 26-27. THIS LOW HAD A STRONG PRESSURE GRADIENT SURROUNDING
IT AND THIS CONTRIBUTED TO VERY STRONG WIND GUSTS. THERE WERE A FEW
AREAS IN WHICH THE GUSTS GOT STRONG ENOUGH TO CAUSE DAMAGE...NOTABLY
IN COOK COUNTY MINNESOTA AND IN PRICE COUNTY WISCONSIN WHERE TREES
AND POWER LINES WERE DOWNED. IN FACT...BETWEEN MIDNIGHT AND 7 AM
GRAND MARAIS MN WAS MEASURING WIND GUSTS REGULARLY IN EXCESS OF 50
MPH.

ALTHOUGH IT IS NOT EXPLICITLY LISTED BELOW...A SHIP REPORTED A 53
KNOT WIND OVER WESTERN LAKE SUPERIOR. THAT CONVERTS TO 61 MPH.

**NOTE THAT THE BLATNIK BRIDGE OBSERVATION IS ABOUT 100 FEET ABOVE
THE WATER LEVEL...SO THE WINDS ARE LIKELY STRONGER THAN WOULD HAVE
BEEN REPORTED AS A 10 METER WIND AT MOST OBSERVING STATIONS**


...GUST...       ...LOCATION...                 ...TYPE...

GUSTS IN MINNESOTA

 **65 MPH**      BLATNIK BRIDGE                 MN DOT
   60 MPH        SILVER BAY MARINE OB           MARINE
   59 MPH        GRAND MARAIS  /GNA/            ASOS
   54 MPH        MCGRATH                        MN DOT
   54 MPH        PINE CITY                      SCHOOL NET
   52 MPH        GRAND PORTAGE HWY 61           MN DOT
   52 MPH        SKY HARBOR ARPT  /DYT/         AWOS
   52 MPH        PARK POINT                     PRIVATE
   51 MPH        DULUTH MARINE OBSERVATION      MARINE
   51 MPH        EMILY HWY 6                    MN DOT
   49 MPH        DULUTH  /DLH/                  ASOS
   49 MPH        HINCKLEY  /04W/                AWOS
   48 MPH        BRAINERD                       RAWS
   47 MPH        BRAINERD  /BRD/                ASOS
   46 MPH        BREEZY POINT                   PRIVATE
   45 MPH        13 NE DULUTH                   PRIVATE
   45 MPH        TWO HARBORS                    PRIVATE
   44 MPH        KABETOGAMA                     RAWS
   44 MPH        AITKIN  /AIT/                  AWOS
   44 MPH        HERMANTOWN                     PRIVATE
   43 MPH        MCGREGOR  /HZX/                AWOS
   43 MPH        MOOSE LAKE  /MZH/              AWOS
   42 MPH        DULUTH I-35 AND GARFIELD AVE   MN DOT
   42 MPH        HERMANTOWN MIDDLE SCHOOL       SCHOOL NET
   41 MPH        MERRIFIELD                     PRIVATE
   41 MPH        14 NE DULUTH                   PRIVATE
   41 MPH        TWO HARBORS  /TWM/             AWOS
   40 MPH        CLOQUET  /COQ/                 AWOS
   40 MPH        MOOSE LAKE                     RAWS



...GUST...       ...LOCATION...                 ...TYPE...

GUSTS IN WISCONSIN

   61 MPH        DEVILS ISLAND                  CMAN / MARINE
   58 MPH        PHILLIPS  /PBH/                AWOS
   57 MPH        5 SW PHILLIPS                  SPOTTER
   53 MPH        PORT WING                      MARINE
   52 MPH        ASHLAND   /ASX/                ASOS
   51 MPH        13 E PARK FALLS                RAWS
   49 MPH        SIREN  /RZN/                   AWOS
   49 MPH        WASHBURN                       RAWS
   46 MPH        SEELEY                         PRIVATE
   46 MPH        AMNICON HWY 53                 WI DOT
   46 MPH        SUPERIOR  /SUW/                AWOS
   46 MPH        MAPLE                          PRIVATE
   46 MPH        DRUMMOND                       SCHOOL NET
   46 MPH        GLIDDEN                        SCHOOL NET
   45 MPH        SPOONER                        SCHOOL NET
   45 MPH        SAXON HARBOR                   MARINE
   45 MPH        CLAM LAKE                      PRIVATE
   45 MPH        HIGH BRIDGE                    PRIVATE
   44 MPH        HAUGEN HWY 53                  WI DOT
   43 MPH        MINONG                         RAWS
   41 MPH        BARNES                         RAWS
   41 MPH        HAYWARD  /HYR/                 ASOS
   40 MPH        HAYWARD                        RAWS

$$

Regional Wind Gust Graphic
Image courtesy of Matt Friedlein at NWS WFO Chanhassen, MN

PDF Version of this map


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