Warm frontal boundary induced severe thunderstorms.
Every event with a place to put it. Tap one for its entry below.
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 MPX wrote it up.
Warm frontal boundary induced severe thunderstorms.
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 Twin Cities, MN wrote its last area forecast discussion before the first event at Sep 24, 11:39 AM CST, 1 hour 58 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 1239 PM CDT MON SEP 24 2007 .AVIATION... /18Z TAF ISSUANCE/ VERY MOIST CONDITIONS ACROSS THE TAF SITES ATTM. COLD FRONT CURRENTLY ALONG THE SD/MN BORDER WITH SHOWERS AND THUNDERSTORMS INCREASING RAPIDLY OVER FAR WESTERN MN. ANOTHER AREA OF SHOWERS AND ISOLATED THUNDERSTORMS FROM ALBERT LEA TO NEW RICHMOND. THESE ARE ASSOCIATED WITH SHEARING VORT/TROPICAL MOISTURE THAT BEGAN BACK ALONG THE TX/LA BORDER DURING THE WEEKEND. NEEDLESS TO SAY...A WET AFTERNOON/EVENING IN STORE. MVFR CEILINGS WILL DETERIORATE AS THE SHOWERS MOVE IN. KEPT CEILINGS IN THE 1000-1500 FOOT RANGE TUESDAY MORNING IN THE WAKE OF THE FRONT ALONG WITH INCREASING NW WINDS. && .PREV DISCUSSION... /ISSUED 412 AM CDT MON SEP 24 2007/ SLOW MOVING TROUGH WILL BE PUSHING THROUGH AN AIRMASS WITH EXCEPTIONALLY HIGH PWAT VALUES FOR THIS TIME OF YEAR. LAST EVENINGS 40KM NAM SHOWS A SHARP BUILDUP IN PWAT VALUES OVER OUT MINNESOTA COUNTIES AFTER SUNRISE WITH VALUES SURGING TO NEAR 2.0 INCHES BY 00Z TUESDAY OVER EAST CENTRAL MINNESOTA. PRECIPITATION TIMING APPEARS TO COINCIDE BEST WITH HIGHER VALUES (I.E. 0.50 INCH/6 HOUR) OF PWAT TRENDS AND WE HAVE USED THESE BANDS TO WORK THE PRECIPITATION EASTWARD WITH TIME. IN THAT REGARD...IT APPEARS THAT PRECIPITATION ONSET NEEDED TO BE SLOWED DOWN SOME OVER WHAT WE HAD ADVERTISED IN PREVIOUS GRIDS. HOWEVER...THE HEAVY RAINFALL WORDING IS STILL SEEN AS APPROPRIATE AND IS CARRIED WITH THIS FORECAST PACKAGE. THE HEAVIEST RAINFALL RATES FOR EAST CENTRAL MINNESOTA NOW WILL LIKELY OCCUR THIS EVENING WITH PRECIPITATION NOW LINGERING IN OUR WISCONSIN COUNTIES THROUGH TUESDAY EVENING. && .MPX WATCHES/WARNINGS/ADVISORIES... MN...NONE. WI...NONE. && RAH/WET
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 924 AM CDT MON SEP 24 2007 MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028- 251430- DOUGLAS-TODD-MORRISON-MILLE LACS-KANABEC-STEVENS-POPE-STEARNS- BENTON-SHERBURNE-ISANTI-CHISAGO-LAC QUI PARLE-SWIFT-CHIPPEWA- KANDIYOHI-MEEKER-WRIGHT-HENNEPIN-ANOKA-RAMSEY-WASHINGTON- YELLOW MEDICINE-RENVILLE-MCLEOD-SIBLEY-CARVER-SCOTT-DAKOTA- REDWOOD-BROWN-NICOLLET-LE SUEUR-RICE-GOODHUE-WATONWAN-BLUE EARTH- WASECA-STEELE-MARTIN-FARIBAULT-FREEBORN-POLK-BARRON-RUSK- ST. CROIX-PIERCE-DUNN-PEPIN-EAU CLAIRE- 924 AM CDT MON SEP 24 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL AND SOUTH CENTRAL MINNESOTA...AND WEST CENTRAL WISCONSIN. .DAY ONE...TODAY AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER PORTIONS OF EAST CENTRAL AND SOUTH CENTRAL MINNESOTA ALONG WITH MUCH OF WEST CENTRAL WISCONSIN THIS AFTERNOON AND EVENING. THE PRIMARY SEVERE WEATHER RISK IS LIKELY TO BE LOCALLY DAMAGING WINDS FROM A FEW OF THE STORMS. THE SEVERE WEATHER RISK AREA IS MAINLY ALONG AND SOUTH OF A LINE FROM REDWOOD FALLS THROUGH THE NORTHERN SUBURBS OF THE TWIN CITIES TO BARRON AND STANLEY IN WEST CENTRAL WISCONSIN. A FEW COMMUNITIES INCLUDED IN THE SEVERE WEATHER RISK AREA INCLUDE ST. JAMES... GLENCOE...THE TWIN CITIES...ALBERT LEA...RED WING...NEW RICHMOND... MENOMONIE AND EAU CLARIE. IN ADDITION TO THE SEVERE WEATHER THREAT...AS SHOWERS AND THUNDERSTORMS MOVE ACROSS MINNESOTA AND WESTERN WISCONSIN FROM THIS AFTERNOON THROUGH TONIGHT...THERE IS LIKELY TO BE A PERIOD OF SEVERAL HOURS WHERE THE HOURLY RAINFALL RATE WILL BECOME EXCESSIVE. WHERE THERE IS ANY URBANIZATION...THERE WILL LIKELY BE A STREET FLOODING PROBLEM AS STORM SEWERS WILL NOT BE ABLE TO KEEP UP WITH THE RAPID RUNOFF. HEAVY RAINFALL RATES WILL LIKELY BECOME A PROBLEM FOR ST. CLOUD...WILLMAR...LITCHFIELD...HUTCHINSON...REDWOOD FALLS AND NEW ULM SOMETIME BETWEEN 11 AM AND 4 PM CDT. BETWEEN 4 PM AND 10 PM...THE HEAVY RAINFALL RATE PROBLEM WILL LIKELY OCCUR FROM CAMBRIDGE ACROSS THE TWIN CITIES METRO AREA ON SOUTH INTO ALBERT LEA AND OWATONNA. WESTERN WISCONSIN...INCLUDING RICE LAKE...LADYSMITH AND EAU CLAIRE WILL BE PLAGUED BY THESE PROBLEMS FROM LATE THIS EVENING INTO EARLY TUESDAY MORNING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTER ACTIVATION MAY BE NEEDED. RAH
The Minneapolis radar (KMPX), 141 km away, was scanning. The volume nearest the first event began at 19:37 UTC.
7 thunderstorm wind. Local standard time, as filed.
Two trees down in and near spotter residence. Additional trees and power lines down on the west side of town.
Winds measured by MNDOT sensor.
Large tree limb down. Small hail also reported.
Tree down on power pole.
Measured at North Intermediate School, where a light pole was toppled. Shingles were ripped off a few roofs in town.
Tree down across County Road 45.
Tree toppled onto power line along East Lower 167th Street.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Minnesota in 2007Every state in 2007This day in weather historyWarnings in Minnesota, September 2007
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: 59767, 59814, 59769, 59768, 59770, 59812, 59813.