A strong gust of wind caused a building under construction to collapse in Grand Rapids, MN. A construction worker was injured in the accident.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS DLH wrote it up.
A strong gust of wind caused a building under construction to collapse in Grand Rapids, MN. A construction worker was injured in the accident. Winds were consistently gusting between 20 and 30 mph all day.
The local office's own words before the first event, 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 the first event at Jul 15, 9:06 AM CST, 3 hours 54 minutes earlier.
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE DULUTH MN 1006 AM CDT WED JUL 15 2009 .UPDATE...ADDED SOME MENTION OF SPRINKLES AND EXPANDED POPS FOR SHOWERS THIS MORNING PER CURRENT RADAR TRENDS AND OBSERVATIONS. OTHERWISE...GOING FORECAST LOOKS GOOD. && .PREV DISCUSSION... /ISSUED 336 AM CDT WED JUL 15 2009/ DISCUSSION...MSAS INDICATES INITIAL SFC BDRY...OCCLUDED FRONT...HAS SWEPT INTO NWRN WISC EARLY THIS MORNING. MOST PRECIP IS OUT OF CWA WITH SOME PARTIAL CLEARING BEHIND FRONT. THIS HAS ALLOWED SOME FOG TO FORM HOWEVER 20-25KTS JUST ABOVE SFC IS FAVORING MORE OF A STRATUS DECK THAN PERSISTENT FOG DUE TO TURBULENT KINETIC ENERGY. ALTHOUGH VISIBILITIES WILL BE LOWERING THIS MORNING IT APPEARS THE STRATUS DECK WILL BE THE MAIN ELEMENT SO WILL CANCEL DFA. NEXT SWATH OF CLOUDS IS WELL CORRELATED WITH SFC PRESS RISES AND WIND SHIFT FROM SW TO WEST/NORTHWEST. TODAY...SECONDARY BDRY WILL SWING ACROSS CWA AS MID LVL LOW LIFTS NE INTO WRN ONT. EXPECT LARGE SWATH OF STRATUS OVER ERN NDAK/NWRN MN TO ADVECT EAST INTO CWA TODAY. A FEW RW POSSIBLE OVER NRN CWA. BRISK WNW WINDS AS MOMENTUM TRANSFER OCCURS IN BDRY LYR WITH MIXING HEIGHT REACHING 3K TO 5K ACROSS CWA. TONIGHT...CLEARING IN MOST OF THE CWA EXCEPT THE NORTHERN TIER OF ZONES. NAM12 COND PRESS DEFICITS AND MULTI MODEL RH SIGNATURES SUGGEST LOW STRATUS WILL LINGER. TOMORROW...OVERALL....MODELS IN STRONG AGREEMENT THAT SIGNIFICANT LOBE OF MID LVL LOW WILL SAG SOUTHWARD INTO GT LAKES. COND PRESS DEFICITS WITHIN DEEPLY CYCLONIC MOIST CIRCULATION SUGGEST AN INVASION OF LOW CLOUDS ONCE AGAIN. MDLS DIFFER ON SRN EXTENT OF POPS. HAVE KEPT INHERITED FCST WHICH LINES UP MORE WITH AGGRESSIVE EC. CONFIDENCE A BIT LOWERED BY MAJORITY OF MDLS KEEPING POPS A BIT FARTHER NORTH. EXTENDED...FRIDAY THROUGH TUESDAY THE EXTENDED MODELS ARE IN DECENT AGREEMENT EARLY IN THE EXTENDED PERIOD WITH THE UPPER LOW. BELOW NORMAL TEMPERATURES WILL OCCUR EARLY IN THE EXTENDED WITH COOL NORTHERLY FLOW. MORE CLOUDS WILL ALSO OCCUR EARLY ALONG WITH A CHANCE FOR SOME SHOWERS. THE UPPER LOW WILL MIGRATE EAST AND ALTHOUGH WE WILL REMAIN IN NORTHERLY FLOW ALOFT THROUGH MONDAY...THE LOW LEVEL FLOW WILL BECOME INCREASINGLY SOUTHERLY THROUGH THE EXTENDED...ALLOWING TEMPERATURES TO WARM BACK TO AROUND NORMAL BY SUNDAY-MONDAY. ANOTHER WAVE IS EXPECTED TO AFFECT THE REGION BY TUESDAY...WITH A FRONT MOVING THROUGH AS WELL. WE KEPT THE SMALL POPS IN OUR WESTERN ZONES FOR MONDAY. BETTER CHANCE FOR THUNDERSTORMS WILL OCCUR MONDAY NIGHT INTO TUESDAY EVENING AS THE FRONT AND UPPER WAVE MOVE OVER THE REGION. THE GFS AND ECMWF ARE IN PRETTY GOOD AGREEMENT WITH THE SURFACE FRONT POSITION AND UPPER WAVE FOR THAT FAR IN THE EXTENDED. AVIATION...AREAS OF FOG...SOME DENSE WERE OCCURRING OVER PARTS OF NORTHERN MINNESOTA...AROUND KINL/KFOZ/KPWC. MORE FOG WILL BE POSSIBLE THIS MORNING OVER MUCH OF NORTHEAST MINNESOTA INTO PORTIONS OF NORTHWEST WISCONSIN DUE TO HIGH LOW LEVEL MOISTURE. WIDESPREAD MVFR CEILINGS...WITH AREAS OF IFR CEILINGS...COVERED THE IRON RANGE...ARROWHEAD...AND MUCH OF NORTHWEST WISCONSIN AT 08Z...WITH ANOTHER LARGE AREA OF MVFR CEILINGS MOVING EAST INTO WESTERN AND CENTRAL MINNESOTA. WIDESPREAD MVFR WITH POCKETS OF IFR CEILINGS WILL OCCUR THIS MORNING...GRADUALLY DIMINISHING FROM SOUTH TO NORTH DURING THE AFTERNOON AND EARLY EVENING. THERE WILL BE A CHANCE FOR A FEW SHOWERS...MAINLY OVER FAR NORTHERN MINNESOTA. && POINT TEMPS/POPS... DLH 75 51 62 46 / 20 10 30 20 INL 65 47 56 43 / 20 10 40 30 BRD 71 51 67 48 / 10 10 20 10 HYR 74 49 69 44 / 10 10 20 20 ASX 74 49 66 47 / 20 10 20 30 && .DLH WATCHES/WARNINGS/ADVISORIES... MN...NONE. WI...NONE. LS...NONE. HENRY
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE DULUTH MN 1136 AM CDT WED JUL 15 2009 MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-161030- 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- 1136 AM CDT WED JUL 15 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST MINNESOTA AND NORTHWEST WISCONSIN. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THUNDERSTORMS ARE POSSIBLE ON MONDAY...MAINLY WEST OF A LINE FROM AITKIN TO INTERNATIONAL FALLS. THUNDERSTORMS MAY DEVELOP OVER MOST OF THE NORTHLAND TUESDAY. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY OR TONIGHT. LSZ121-140>148-161030- 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- 1136 AM CDT WED JUL 15 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE NEARSHORE WATERS OF WESTERN LAKE SUPERIOR. .DAY ONE...TODAY AND TONIGHT A SMALL CRAFT ADVISORY IS IN EFFECT THROUGH EARLY EVENING FOR THE NEARSHORE WATERS AT THE HEAD OF LAKE SUPERIOR...DUE TO STRONG AND GUSTY WESTERLY WINDS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY INCREASING NORTHWEST WINDS ARE EXPECTED THURSDAY AND THURSDAY NIGHT. BUILDING WAVES MAY POSE A THREAT TO SMALL CRAFT ALONG THE SOUTH SHORE. HENRY MORE INFORMATION MAY BE OBTAINED AT THE FOLLOWING WEB ADDRESS: HTTP://WWW.WEATHER.GOV/DULUTH (ALL LOWER CASE)
The national radar mosaic for the moment the first event began.
1 strong wind. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Minnesota in 2009Every state in 2009This day in weather historyWarnings in Minnesota, July 2009
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 189261.