High Winds:
July 10, 2007

A deep low pressure area centered over Thunder Bay on July 10 dragged a strong cold front across Minnesota. Behind this front were some very gusty non-thunderstorm winds, more typical for April or may than July. Some peak wind gusts were 43 mph at both the Twin Cities and St. Cloud, 60 mph at the Duluth Airport, and 61mph at Fargo. Moorhead had one of the highest wind gusts in Minnesota with 66mph. There were 20,000 power outages in Duluth, sending many flocking to restaurants in town that still had their lights on. Just about all the outages were caused by trees falling on power lines. Falling trees also cut power in Fargo as well. Along with the winds, much cooler and drier air swept across Minnesota and put an end to the muggy 80's and 90's.

Listed below are reports from this high wind event courtesy the National Weather Service.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
1029 AM CDT WED JUL 11 2007

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

0930 AM     NON-TSTM WND DMG BREEZY POINT            46.60N 94.22W
07/10/2007                   CROW WING          MN   TRAINED SPOTTER

            TREES DOWN AND BLOCKING ROADWAYS.

0308 PM     NON-TSTM WND DMG COLERAINE               47.31N 93.42W
07/10/2007                   SOUTHERN ITASCA    MN   TRAINED SPOTTER

            NUMEROUS TREES AND POWERLINES DOWN.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
623 PM CDT TUE JUL 10 2007

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

0620 PM     NON-TSTM WND GST DULUTH                  46.78N 92.12W
07/10/2007  M60 MPH          ST. LOUIS          MN   ASOS

            1156 AM.

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
620 PM CDT TUE JUL 10 2007

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

0500 PM     NON-TSTM WND DMG 2 S BAYFIELD            46.78N 90.82W
07/10/2007                   LSZ121             WI   TRAINED SPOTTER

            FISH HATCHERY...ONE QUARTER OF STEEL ROOF TORN OFF. MANY
            LARGE TREES DOWN.

0600 PM     NON-TSTM WND DMG DULUTH                  46.78N 92.12W
07/10/2007                   ST. LOUIS          MN   NWS EMPLOYEE

            MANY LARGE TREES DOWN...AND POWER LINES THROUGH OUT CITY
            AREA.


PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE DULUTH MN
518 PM CDT TUE JUL 10 2007

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

1010 AM     NON-TSTM WND DMG 1 SW GRAND RAPIDS       47.22N 93.54W
07/10/2007                   ITASCA             MN   TRAINED SPOTTER

            SEVERAL 6-8 INCH DIAMETER POPLAR AND ASPEN TREES DOWN

1030 AM     NON-TSTM WND DMG 1 SE GRAND RAPIDS       47.22N 93.51W
07/10/2007                   ITASCA             MN   PUBLIC

            1 TO 2 INCH DIAMETER TREE BRANCHES DOWN

1100 AM     NON-TSTM WND DMG 3 N SWAN RIVER          47.13N 93.20W
07/10/2007                   ITASCA             MN   TRAINED SPOTTER

            TEN INCH DIAMETER TREES DOWN

1130 AM     NON-TSTM WND DMG JACOBSON                47.00N 93.26W
07/10/2007                   NORTHERN AITKIN    MN   LAW ENFORCEMENT

            TREES DOWN ON POWER LINES AND POWER OUTAGE

0255 PM     NON-TSTM WND GST DULUTH                  46.78N 92.12W
07/10/2007  M56.00 MPH       ST. LOUIS          MN   ASOS

            SKY HARBOR KDYT OBSERVATION

0435 PM     NON-TSTM WND DMG ASHLAND                 46.58N 90.87W
07/10/2007                   ASHLAND            WI   TRAINED SPOTTER

            TWELEVE INCH DIAMETER TREE DOWN ON POWER LINES

0440 PM     NON-TSTM WND DMG WEST DULUTH             46.74N 92.19W
07/10/2007                   SOUTHEAST ST. LOUI MN   PUBLIC

            TREE DOWN ACROSS GRAND AVENUE

PUBLIC INFORMATION STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE GRAND FORKS ND
1235 PM CDT TUE JUL 10 2007

...STRONG WINDS HIT THE AREA EARLY TUESDAY MORNING...
HERE ARE SOME WIND GUSTS REPORTED BY WIND MEASURING EQUIPMENT 
DURING THE MORNING HOURS OF TUESDAY.  ALL TIMES IN CDT.  
FOR ALL BUT SHEYENNE ND...THESE WIND GUSTS WERE NON-THUNDERSTORM 
ASSOCIATED AND DUE TO A TIGHT PRESSURE GRADIENT BETWEEN A DEEPENING 
LOW IN NORTHWEST MINNESOTA AND A HIGH OVER MONTANA.

...DEVILS LAKE REGION...
DEVILS LAKE AIRPORT (FAA AWOS)....72 MPH AT 255 AM
DEVILS LAKE (FIRE-RAWS STATION)...33 MPH 5E DEVILS LAKE (NDDOT-RWIS)..50 MPH AT 352 AM
CANDO (PERSONAL WX STATION).......48 MPH AT 202 AM
...SOUTHEAST NORTH DAKOTA...
5N MCLEOD (FIRE-RAWS STATION RANSOM CO)..68 MPH AT 149 AM (TSTM)
...CORRECTED THIS LOCATION AS SITE IS IN SHEYENNE NATIONAL GRASSLAND
  NOT IN SHEYENNE ND...
FARGO HECTOR ASOS........................61 MPH AT 535 AM
MOORHEAD AIRPORT (FAA AWOS)..............66 MPH AT 555 AM
N MOORHEAD (COOP WEATHER STATION)........49 MPH AT 543 AM
BUFFALO ND (NDDOT-RWIS CASS CO)..........55 MPH AT 509 AM
WAHPETON AIRPORT (FAA AWOS)..............45 MPH AT 535 AM
5W WAHPETON (NDDOT RWIS).................30 MPH AT 515 AM
DILWORTH (MNDOT RWIS ON I-94)............54 MPH AT 538 AM
FARGO (NDDOT RWIS AT RED RIVER BRIDGE)...27 MPH AT 530 AM
VALLEY CITY (PERSONAL WX STATION)........34 MPH
DAZEY NDAWN SITE (BARNES CO).............41 MPH
FINGAL NDAWN SITE (BARNES CO)............42 MPH
PROSPER NDAWN SITE (CASS CO).............46 MPH
GALESBURG NDAWN SITE (TRAILL CO).........46 MPH

...GRAND FORKS AREA AND NORTHEAST NORTH DAKOTA...
GRAND FORKS AIRPORT ASOS...............44 MPH AT 439 AM
GRAND FORKS (NDDOT RWIS MP 153 I-29)...51 MPH AT 516 AM
GRAND FORKS AIR FORCE BASE ASOS........45 MPH AT 448 AM
NWS GRAND FORKS (WEST PART OF CITY)....42 MPH AT 520 AM
BUXTON (NDDOT RWIS TRAILL CO.).........53 MPH AT 543 AM
EMERADO (PERSONAL WX STATION)..........37 MPH
FISHER MN (MNDOT RWIS POLK CO).........52 MPH AT 529 AM
REST OF AREA FROM GRAFTON NORTH TO THE BORDER HAD GUSTS 25 TO 35 MPH.
...WEST CENTRAL MINNESOTA...
DETROIT LAKES AIRPORT (FAA AWOS).......55 MPH AT 655 AM
DETROIT LAKES (FIRE-RAWS STATION)......51 MPH LAKE PARK 
(MNDOT RWIS BECKER CO).......61 MPH AT 648 AM
ROTHSAY (MNDOT RWIS WILKIN CO).........45 MPH AT 658 AM
FERGUS FALLS AIRPORT (FAA AWOS)........41 MPH AT 555 AM
PRAIRIE WETLAND CENTER FERGUS FALLS....44 MPH
OTTERTAIL (MNDOT RWIS).................45 MPH AT 747 AM
PARK RAPIDS AIRPORT ASOS...............53 MPH AT 818 AM
WADENA (FAA AWOS)......................46 MPH AT 955 AM
VERNDALE (MNDOT RWIS WADENA CO)........52 MPH AT 748 AM
STAPLES AIRPORT (WADENA/TODD CO).......49 MPH AT 955 AM

...NORTHWEST MINNESOTA...
MAHNOMEN (MNDOT RWIS)..................58 MPH AT 706 AM
CROOKSTON (FAA AWOS)...................41 MPH AT 555 AM
FOSSTON (FAA AWOS).....................41 MPH AT 735 AM
BROOKS (MNDOT RWIS POLK/RED LAKE CO)...52 MPH AT 709 AM
THIEF RIVER FALLS (FAA AWOS)...........46 MPH AT 635 AM
HALLOCK (FAA AWOS).....................36 MPH AT 355 AM
DONALDSON (MNDOT RWIS KITTSON CO)......43 MPH AT 410 AM
BEMIDJI (FAA AWOS).....................41 MPH AT 835 AM
BAUDETTE ASOS..........................44 MPH AT 847 AM
ROSEAU (FAA AWOS)......................37 MPH AT 815 AM
GATZKE (MNDOT RWIS MARSHALL CO)........38 MPH AT 649 AM

$$
RIDDLE


PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
245 PM CDT TUE JUL 10 2007

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

0149 AM     TSTM WND GST     5 N MCLEOD              46.47N 97.30W
07/10/2007  M68.00 MPH       RANSOM             ND   MESONET

            RAWS SITE AT SHEYENNE NATIONAL GRASSLAND

0255 AM     NON-TSTM WND GST DEVILS LAKE             48.11N 98.87W
07/10/2007  M72.00 MPH       RAMSEY             ND   AWOS

            MEASURED AT AIRPORT

0535 AM     NON-TSTM WND GST FARGO                   46.88N 96.82W
07/10/2007  M61.00 MPH       CASS               ND   ASOS

            PEAK WIND AT HECTOR FIELD AIRPORT

0555 AM     NON-TSTM WND GST MOORHEAD                46.86N 96.76W
07/10/2007  M66.00 MPH       CLAY               MN   AWOS

            MEASURED AT AIRPORT

0648 AM     NON-TSTM WND GST LAKE PARK               46.88N 96.10W
07/10/2007  M61.00 MPH       BECKER             MN   MESONET

            MNDOT RWIS

0706 AM     NON-TSTM WND GST MAHNOMEN                47.31N 95.97W
07/10/2007  M58.00 MPH       MAHNOMEN           MN   MESONET

            MNDOT RWIS


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URL: http://climate.umn.edu/doc/journal/wind070710.htm
Last modified: July 10, 2007