This event was mostly a marginally severe wind event with one significant wind event covering a two block area in Flushing. The wind gusts in Flushing were estimated at speeds of 80 MPH.
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 DTX wrote it up.
This event was mostly a marginally severe wind event with one significant wind event covering a two block area in Flushing. The wind gusts in Flushing were estimated at speeds of 80 MPH. Numerous trees were blown down with only minor property damage reported.
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 Detroit, MI wrote its last area forecast discussion before the first event at Sep 25, 3:30 PM EST, 2 hours 51 minutes earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
430 PM EDT TUE SEP 25 2007
.SHORT TERM...THIS AFTERNOON AND TONIGHT
CONVECTIVE TEMPERATURES ARE BEGINNING TO BE REACHED HERE THIS
AFTERNOON WITH READINGS RISING INTO THE MID 80S. COPIOUS AMOUNTS OF
MOISTURE BOTH ALOFT AND AT THE SURFACE IS FIRMLY ENTRENCHED ACROSS
THE FORECAST AREA. THE MOISTURE IS CHARACTERIZED BY SURFACE
DEWPOINTS OF UP TO 70 DEGREES FOR MOST EVERYONE AND PWATS OF UP TO
1.75 INCHES (BOTH HIGHLY IMPRESSIVE FOR THIS TIME OF THE YEAR). A
LITTLE WRINKLE TO THE PREVIOUS THINKING HAS BEEN THE DEVELOPMENT OF
A PREFRONTAL TROUGH OVER SOUTHERN MICHIGAN WITH A FAIRLY IMPRESSIVE
TEMPERATURE GRADIENT ACROSS THIS PARTICULAR INTERFACE (NOT EVEN THE
SHARP SURFACE FRONT). LOCALIZED CONVERGENCE ON THE TROUGH HAS BEEN
ENOUGH LIFT TO FIRE SOME STORMS MAINLY NORTH OF THE SAGINAW BAY TO
THE GRAND RAPIDS VICINITY. THIS ACTIVITY WILL TRACK SOUTHWEST TO
NORTHEAST AT 30 KNOTS AND CLIP PORTIONS OF OUR FAR NORTHERN CWA THIS
AFTERNOON AND EVENING. FARTHER SOUTHWEST ACTIVITY ALONG THE COLD
FRONT IN THE CHICAGO VICINITY HAS INCREASED IN STRENGTH THE PAST
COUPLE OF HOURS...AND WILL ARRIVE IN OUR COUNTIES LATER THIS
EVENING. THE ACTIVITY ACROSS THE CWA HERE EARLY HAS BEEN BUBBLING
(IN A WEAKLY CAPPED ENVIRONMENT) ALONG ANY FILAMENTS OF MIDLEVEL
CONVERGENCE WORKING THROUGH THE SOUTHWEST FLOW.
INSTABILITY IS SUFFICIENT FOR SEVERE CRITERIA WINDS WITH SB/ML CAPES
IN EXCESS OF 2000 J/KG AND SURFACE LI/S OF LESS THAN -5C. MAIN MODE
OF CONVECTION WILL BE LINE SEGMENTS/SMALL BOWS WITH LINEAR FORCING
COMBINED WITH A STRONG UNIDIRECTIONAL WIND PROFILE. A SUPERCELLULAR
STORM OR TWO IS NOT OUT OF QUESTION WITH 0-6KM SHEAR OF AROUND 40
KNOTS MAINLY ACROSS THE NORTH. SO...GREATEST THREATS TONIGHT WILL BE
STRONG WINDS OF UP TO 70 MPH AND HEAVY RAINFALL.
PERIODS OF RAIN SHOWERS AND SCATTERED THUNDERSTORMS WILL CONTINUE
OVERNIGHT UNTIL THE COLD FRONT SWEEPS THROUGH AND BEGINS SCOURING
THE AIRMASS. THIS WILL HAPPEN FOR THE SAGINAW AREA AROUND 8Z
TONIGHT AND FOR THE DETROIT VICINITY AT 13Z. LOWS WILL BE SLOW TO
FALL ACROSS THE SOUTH RANGING FROM THE UPPER 50S NORTH TO THE MID
60S SOUTH AND THE HEAT ISLAND.
&&
.LONG TERM...WEDNESDAY THROUGH TUESDAY
COLD FRONT WILL BE SETTLING SOUTHEAST OF THE REGION ON WEDNESDAY
MORNING. WILL MAINTAIN THE CHANCE OF SHOWERS DURING THE MORNING WITH
DRY WEATHER EXPECTED DURING THE AFTERNOON. WILL HAVE TO MAINTAIN A
CHANCE OF SHOWERS WEDNESDAY NIGHT AS GFS CONTINUES TO DRAW THE WAVE
OVER EAST TX/ARKANSAS NORTHEAST INTO THE AREA IN ADVANCE OF THE
SHORTWAVE DIGGING OUT OF NORTHWEST CANADA AND ON THROUGH THE UPPER
MIDWEST. TIMING WITH THE EVERYTHING...AND THE UPPER TROUGH AXIS MAY
VERY WELL PROGRESS FAR ENOUGH EAST TO SHUNT THIS MOISTURE THROUGH
OHIO INTO LAKE ERIE/ONTARIO.
AS THIS NORTHERN STREAM SHORTWAVE (AND ANOTHER SWEEPING IN BEHIND
IT)TRACKS THROUGH THE NORTHERN GREAT LAKES...SCATTERED LIGHT SHOWERS
WILL BE POSSIBLE INTO PARTS OF THE AREA THURSDAY/THURSDAY NIGHT AND
WILL MAINTAIN THE MENTION FROM ABOUT I 69 NORTH.
DRY WEATHER WILL THEN ENSUE FRIDAY THROUGH SUNDAY AS HIGH PRESSURE
SETTLES SOUTHEAST THROUGH THE REGION. THE NEXT WEATHER-MAKER WITH
THEN ENCROACH ON THE GREAT LAKES...AND BRING A CHANCE OF SHOWERS
AND/OR THUNDERSTORMS TO THE AREA SUNDAY NIGHT AS A STRONG NEGATIVELY
TILTED SYSTEM WELL TO THE NORTHWEST PUSHES AN AGGRESSIVE COLD FRONT
FROM WEST TO EAST ACROSS THE REGION.
AFTER THE PASSAGE OF THE COLD FRONT ON WEDNESDAY MORNING...EXPECT
TEMPERATURES TO EDGE BACK TO NEAR NORMAL...WITH HIGHS IN THE UPPER
60S TO LOWER 70S THROUGH THE REST OF THE WEEK INTO THE WEEKEND. LOW
TEMPERATURES WILL EBB DOWN INTO THE 40S/50S...WITH 40S BECOME MORE
PREDOMINANT LATE IN THE WEEK AS THE AFOREMENTIONED HIGH PRESSURE
SYSTEM CROSSES THE CENTRAL LAKES REGION.
&&
.MARINE...
THUNDERSTORMS WILL INCREASE IN COVERAGE/INTENSITY THIS EVENING AS A
COLD FRONT APPROACHES THE AREA. A FEW STORMS MAY BE SEVERE WITH SOME
GUSTY WINDS. THIS ACTIVITY WILL FADE STEADILY LATER THIS EVENING
WITH THE LOSS OF DAYTIME HEATING.
SOUTHWESTERLY WINDS WILL GUST TO 25 KNOTS AT TIMES TONIGHT OVER LAKE
HURON...WITH SMALL CRAFT ADVISORIES CONTINUING. THESE WINDS WILL
COME DOWN QUICKLY ON WEDNESDAY AS HIGH PRESSURE BUILDS INTO THE AREA
SO THE EXPIRATION OF THIS ADVISORY HAS BEEN PULLED BACK TO 11 AM.
ALSO...WINDS/WAVES WILL LIKELY REMAIN BELOW CRITERIA ON LAKE ERIE
AND LAKE ST CLAIR SO THE ADVISORY HAS BEEN DROPPED THERE.
&&
.PREV DISCUSSION...ISSUED 152 PM EDT TUE SEP 25 2007
AVIATION...
WINDS HAVE BEEN ON THE INCREASE THIS AFTERNOON AS MIXING HAS
ALLOWED FOR SOME GUSTS IN THE LOWER 20 KNOT RANGE. EXPECTING
PREDOMINATE VFR CEILINGS WITH THE CONVECTIVE DEBRIS AND MIDLEVEL
CLOUDINESS PASSING THROUGH THE STATE. HOWEVER...BROKEN MVFR
CEILINGS AT 15KFT MAY BE POSSIBLE THIS AFTERNOON WITH ANY STRONGER
THUNDERSTORM ACTIVITY...TEMPO GROUPINGS FOR KFNT AND KMBS. DID NOT
INCLUDE AT KDTW/KDET WITH UNCERTAINTY TO TIMING AND COVERAGE
ACROSS THE SOUTH. HAVE INCLUDED SOME TIMING WITH THE SURFACE FRONT
PASSAGE AND NORTHWEST WINDS(AROUND 11Z AT THE DETROIT SITES).
&&
.DTX WATCHES/WARNINGS/ADVISORIES...
MI...NONE.
LAKE HURON...
SMALL CRAFT ADVISORY...NEARSHORE WATERS FROM PORT AUSTIN TO PORT
HURON INCLUDING SAGINAW BAY...UNTIL 11 AM WEDNESDAY.
LAKE ST CLAIR...NONE.
MI WATERS OF LAKE ERIE...NONE.
&&
SHORT TERM...CB
LONG TERM....DG
MARINE.......DG
AVIATION.....CB
YOU CAN OBTAIN YOUR LATEST NATIONAL WEATHER SERVICE FORECASTS ONLINE
AT WWW.WEATHER.GOV/DETROIT (ALL LOWER CASE).HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 434 PM EDT TUE SEP 2007 MIZ047>049-053>055-060>063-068>070-075-076-082-083-260915- MIDLAND COUNTY-BAY COUNTY-HURON COUNTY-SAGINAW COUNTY-TUSCOLA COUNTY- SANILAC COUNTY-SHIAWASSEE COUNTY-GENESEE COUNTY-LAPEER COUNTY- ST. CLAIR COUNTY-LIVINGSTON COUNTY-OAKLAND COUNTY-MACOMB COUNTY- WASHTENAW COUNTY-WAYNE COUNTY-LENAWEE COUNTY-MONROE COUNTY- 434 PM EDT TUE SEP 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST MICHIGAN. .DAY ONE...TODAY AND TONIGHT NUMEROUS THUNDERSTORMS WILL BE POSSIBLE THIS EVENING AHEAD OF AN APPROACHING COLD FRONT. THERE IS A SLIGHT CHANCE OF SEVERE WEATHER FROM LATE THIS AFTERNOON INTO TONIGHT WITH WIND GUSTS TO 70 MPH AND LOCALIZED HEAVY RAINFALL BEING THE MAIN THREATS. STORM MOTION WILL BE TO THE NORTHEAST AT 30 MPH. AN UNSEASONABLY WARM AND MOIST AIRMASS WILL SPREAD OVER THE REGION TODAY. SHOWERS AND THUNDERSTORMS WILL INCREASE IN COVERAGE BY THIS EVENING AHEAD OF AN APPROACHING COLD FRONT THAT WILL MOVE SOUTHEAST ACROSS LOWER MICHIGAN OVERNIGHT. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY THERE IS A CHANCE OF THUNDERSTORMS FROM SUNDAY NIGHT INTO MONDAY AS THE NEXT COLD FRONT MOVES THROUGH THE REGION. .SPOTTER INFORMATION STATEMENT... DISPATCHERS PLEASE NOTIFY YOUR EMERGENCY MANAGERS IMMEDIATELY...SPOTTER ACTIVATION IS NEEDED LATE THIS AFTERNOON AND EVENING. LCZ422-423-460-LEZ444-LHZ421-422-441>443-462>464-260915- ST. CLAIR RIVER-DETROIT RIVER- LAKE ST. CLAIR OPEN LAKE (U.S. PORTION)- MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI- OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER SAGINAW BAY-INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI- PORT AUSTIN TO HARBOR BEACH MI-HARBOR BEACH TO PORT SANILAC MI- PORT SANILAC TO PORT HURON MI- LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE- LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE- LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE- 434 PM EDT TUE SEP 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE ERIE...LAKE HURON AND LC. .DAY ONE...TODAY AND TONIGHT A SMALL CRAFT ADVISORY IS IN EFFECT FOR THE NEARSHORE WATERS OF LAKE HURON. PLEASE SEE THE LATEST MARINE PRODUCTS /NSHDTX/ AND /MWWDTX/ FOR FURTHER DETAILS. NUMEROUS THUNDERSTORMS WILL BE POSSIBLE THIS EVENING AHEAD OF AN APPROACHING COLD FRONT. THERE IS A SLIGHT CHANCE OF SEVERE WEATHER FROM LATE THIS AFTERNOON INTO TONIGHT WITH WIND GUSTS TO 60 KNOTS BEING THE MAIN THREAT. STORM MOTION WILL BE TO THE NORTHEAST AT 30 KNOTS. FREQUENT CLOUD TO GROUND LIGHTNING CAN ALSO BE EXPECTED WITH THE STRONGER STORMS. AN UNSEASONABLY WARM AND MOIST AIRMASS WILL SPREAD OVER THE REGION TODAY. SHOWERS AND THUNDERSTORMS WILL INCREASE IN COVERAGE BY THIS EVENING AHEAD OF AN APPROACHING COLD FRONT THAT WILL MOVE SOUTHEAST ACROSS LOWER MICHIGAN OVERNIGHT. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY SMALL CRAFT ADVISORIES WILL CONTINUE INTO WEDNESDAY FOR THE NEARSHORE WATERS OF LAKE HURON. PLEASE SEE THE LATEST MARINE FORECASTS FOR DETAILS. THERE IS A CHANCE OF THUNDERSTORMS FROM SUNDAY NIGHT INTO MONDAY AS THE NEXT COLD FRONT MOVES THROUGH THE REGION. .SPOTTER INFORMATION STATEMENT... DISPATCHERS PLEASE NOTIFY YOUR EMERGENCY MANAGERS IMMEDIATELY...SPOTTER ACTIVATION IS NEEDED LATE THIS AFTERNOON AND EVENING. CB/KEC YOU CAN OBTAIN YOUR LATEST NATIONAL WEATHER SERVICE FORECASTS ONLINE AT WWW.WEATHER.GOV/DETROIT (ALL LOWER CASE).
The Detroit radar (KDTX), 60 km away, was scanning. The volume nearest the first event began at 23:21 UTC.
6 thunderstorm wind. Local standard time, as filed.
Trained spotters reported two trees down across M-13 in Lennon.
A National Weather Service storm survey revealed a classic downburst/straight-line wind event in Flushing. Total damage included over a dozen trees uprooted, a dozen more snapped off at the trunk, widespread large tree branches down, and one garage door blown inward. Wind speeds were estimated at 80 MPH.
A trained spotter estimated the wind gusts at 60 MPH.
A trained spotter reported several trees down.
A trained spotter estimated the wind gusts at 60 MPH.
A trained spotter reported a small tree down.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Michigan in 2007Every state in 2007This day in weather historyWarnings in Michigan, 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: 61273, 61279, 61283, 61280, 61284, 61281.