Severe thunderstorm wind gusts brought down numerous trees across the area.
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 GRR wrote it up.
Severe thunderstorm wind gusts brought down numerous trees across the area.
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 Grand Rapids, MI wrote its last area forecast discussion before the first event at Aug 22, 5:40 PM EST, 1 hour 30 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND RAPIDS MI 640 PM EDT WED AUG 22 2007 LATEST UPDATE...SHORT TERM... .SYNOPSIS...(403 PM EDT WED AUG 22 2007) A FRONTAL BOUNDARY IS EXPECTED TO OSCILLATE NORTH AND SOUTH THROUGH THE REGION THE NEXT SEVERAL DAYS. ADDITIONAL SHOWERS AND THUNDERSTORMS CAN BE EXPECTED AT TIMES THROUGH SATURDAY...AT WHICH TIME A COLD FRONT WILL SWEEP THROUGH BRINGING DRY HIGH PRESSURE INTO THE AREA. SEVERE WEATHER IS ALSO POSSIBLE THE NEXT FEW DAYS...WHERE STORMS MAY CONTAIN HEAVY RAIN...DAMAGING WINDS AND HAIL. && .SHORT TERM... (640 PM EDT WED AUG 22 2007) A LINE OF STRONG TO SEVERE STORMS STRETCHING FROM IOWA THROUGH EASTERN WISCONSIN CONTINUES TO MOVE NORTHEAST AND IS CROSSING THE LAKE ATTM. THESE STORMS ARE DEVELOPING ALONG A FRONTAL BOUNDARY AND IN ADVANCE OF SEVERAL SHORT WAVES MOVING THROUGH THE UPPER MIDWEST. THE STORMS ARE MOVING INTO AN ENVIRONMENT THAT HAS SOME CINH AND AWAY FROM A MORE FAVORABLE ENVIRONMENT. THUS THEY SHOULD WEAKEN A BIT...BUT WON/T DISSIPATE. WE INCREASED POPS TO REFLECT HIGHER POPS OVER THE NW CWA. MORE STORMS WILL ARRIVE OVERNIGHT AS CONVECTION NEAR THE MISSISSIPPI MOVES EASTWARD. THURSDAY AND THURSDAY NIGHT A HEALTHY LOW LEVEL JET IS PROGD TO REMAIN IN THE AREA. NAM HAS A 55 KNOT LLJ MOVING INTO WEST CENTRAL LOWER MICHIGAN AT 00Z IN THE EVENING. THIS MAY BE A BIT OVERDONE...BUT THE GFS HAS A 50 KNOT LLJ OVER THE LAKE AT THE SAME TIME WHICH LENDS CREDENCE TO IT. IF THIS MATERIALIZES AND WE CAN DEVELOP INSTABILITY IN THE WAKE OF AN OVERNIGHT/THURSDAY MORNING MCS THINGS COULD GET INTERESTING. A SIGNIFICANT WIND THREAT WOULD BE IN THE OFFING. WITH SOME UNCERTAINTY IN THE STRENGTH OF THE LLJ AND THE EVOLUTION OF CONVECTION/DEVELOPING INSTABILITY NOT READY TO GET TOO EXCITED JUST YET. WILL BE INTERESTED TO SEE HOW THE LLJ IS HANDLED IN UPCOMING MODEL RUNS. FRIDAY AND FRIDAY NIGHT MUCH THE SAME SCENARIO IS IN PLACE WITH A WAVE RIDING THROUGH THE FORECAST AREA ALONG THE BOUNDARY. && .LONG TERM... (327 PM EDT WED AUG 22 2007) THE EXTENDED PERIOD LOOKS DRY FOR THE MOST PART. A SFC LOW AND COLD FRONT WILL BE MOVING THROUGH LOWER MICHIGAN EARLY SATURDAY. MODEL TIMING DIFFERENCES...THE GFS BEING QUICKER...PRECLUDE REMOVING POPS TOTALLY FROM THE GRIDS DURING THE AFTERNOON. ALTHOUGH SREF POPS DECREASE SIGNIFICANTLY DURING THE AFTERNOON HOURS. THE FRONT SHOULD CLEAR THE CWA BY SATURDAY EVENING AFTER WHICH HIGH PRESSURE WILL BUILD SOUTH INTO THE REGION AND PROVIDE DRY WX UNTIL TUESDAY NIGHT AND WEDNESDAY WHEN THE NEXT FRONT APPROACHES. && .AVIATION...(240 PM EDT WED AUG 22 2007 ) WARM FRONT IS BASICALLY NORTH OF THE CWA ATTM. SCT CU WILL BE VISIBLE THROUGH SUNSET. AS INSTABILITY RISES THIS AFTERNOON...WE CAN/T RULE OUT A SHOWER/THUNDERSTORM. HOWEVER...WITH THE LACK OF A FOCUS CHANCE/S AREN/T HIGH. THE BETTER CHANCE OF PCPN WILL COME OVERNIGHT WHEN THE MCS OVER IOWA MOVES EAST. BASICALLY VFR CONDITIONS THIS AFTERNOON. EXPECT SOME 3-5SM BR TONIGHT DUE TO ABUNDANT LOW LEVEL MOISTURE. ALSO TSRA VCNTY IS IN THE TAFS. && .MARINE... (403 PM EDT WED AUG 22 2007) WAVES TONIGHT WILL REMAIN MANAGEABLE IN THE 1 TO 2 FOOT RANGE WITH AN INCREASING SOUTH WIND. ON THURSDAY THOUGH...SMALL CRAFT ADVISORIES MAY BE NEEDED AS WAVES PUSH INTO THE 3 TO 5 FOOT RANGE. && .HYDROLOGY... (403 PM EDT WED AUG 22 2007) A REAL CONCERN BY EARLY IN THE WEEKEND COULD BE ELEVATED RIVER LEVELS IF WE CONTINUE TO GET MCS/S ROLLING THROUGH THE CWA. RIGHT NOW...RIVERS ARE HIGHER THAN NORMAL FOR AUGUST...BUT THERE IS STILL A WAYS TO GO TO GET TO BANKFULL AT MOST SITES. WE WILL CONTINUE TO MONITOR RIVER LEVELS. A WARM...MOIST AIR MASS IN PLACE SHOULD CONTINUE TO FUEL BOUTS OF HEAVY RAIN. && .GRR WATCHES/WARNINGS/ADVISORIES... MI...NONE. LM...NONE. && SYNOPSIS: DUKE SHORT TERM: DUKE/93 LONG TERM: 93 AVIATION: 93 MARINE: DUKE HYDROLOGY: DUKE
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND RAPIDS MI 1021 AM EDT WED AUG 22 2007 MIZ037>040-043>046-050>052-056>059-064>067-071>074-230900- MASON-LAKE-OSCEOLA-CLARE-OCEANA-NEWAYGO-MECOSTA-ISABELLA-MUSKEGON- MONTCALM-GRATIOT-OTTAWA-KENT-IONIA-CLINTON-ALLEGAN-BARRY-EATON- INGHAM-VAN BUREN-KALAMAZOO-CALHOUN-JACKSON- 1021 AM EDT WED AUG 22 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER MICHIGAN. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS ARE EXPECTED TO REDEVELOP THIS AFTERNOON AND EVENING. SOME OF THESE STORMS COULD BECOME SEVERE WITH LARGE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. AN ISOLATED TORNADO IS ALSO POSSIBLE. LOCALLY HEAVY RAINFALL COULD RESULT IN SOME URBAN AND SMALL STREAM FLOODING. THUNDERSTORM MOVEMENT TODAY AND TONIGHT WILL BE EAST SOUTHEAST AT AROUND 30 MPH. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THUNDERSTORMS ARE IN THE FORECAST THURSDAY THROUGH SATURDAY AS AN ACTIVE FRONTAL BOUNDARY REMAINS STALLED OVER THE AREA. SEVERE WEATHER AND LOCALLY HEAVY RAINFALL WILL BE POSSIBLE EACH DAY. THE FRONT SHOULD CLEAR THE AREA TO THE SOUTHEAST SATURDAY NIGHT... WITH QUIET WEATHER ANTICIPATED FOR SUNDAY THROUGH TUESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED EACH DAY TODAY THROUGH SATURDAY. LMZ844>849-230900- ST JOSEPH TO SOUTH HAVEN-SOUTH HAVEN TO HOLLAND- HOLLAND TO GRAND HAVEN-GRAND HAVEN TO WHITEHALL- WHITEHALL TO PENTWATER-PENTWATER TO MANISTEE- 1021 AM EDT WED AUG 22 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER MICHIGAN. .DAY ONE...TODAY AND TONIGHT AREAS OF FOG AND HAZE WILL BE POSSIBLE TODAY AND TONIGHT ON LAKE MICHIGAN AS WARM...MOIST AIR MOVES OVER THE SOUTHERN AND CENTRAL PORTIONS OF THE LAKE FROM THE SOUTHWEST. THUNDERSTORMS ARE EXPECTED TO REDEVELOP THIS AFTERNOON AND EVENING. SOME OF THESE STORMS COULD BECOME SEVERE WITH LARGE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. THUNDERSTORM MOVEMENT TODAY AND TONIGHT WILL BE EAST SOUTHEAST AT AROUND 30 MPH. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THUNDERSTORMS ARE IN THE FORECAST THURSDAY THROUGH SATURDAY AS AN ACTIVE FRONTAL BOUNDARY REMAINS STALLED OVER THE AREA. SEVERE WEATHER AND LOCALLY HEAVY RAINFALL WILL BE POSSIBLE EACH DAY. THE FRONT SHOULD CLEAR THE AREA TO THE SOUTHEAST SATURDAY NIGHT...WITH QUIET WEATHER ANTICIPATED FOR SUNDAY THROUGH TUESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED EACH DAY TODAY THROUGH SATURDAY. MEADE/DUKE
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
313 PM EDT WED AUG 22 2007
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0703 AM TSTM WND DMG 1 SW ALAMO 42.37N 85.72W
08/22/2007 KALAMAZOO MI LAW ENFORCEMENT
TREES DOWN.
0711 AM TSTM WND DMG 1 E KALAMAZOO 42.27N 85.57W
08/22/2007 KALAMAZOO MI LAW ENFORCEMENT
SEVERAL TREES DOWN AROUND THE CITY OF KALAMAZOO.
CORRECTED FOR TIME BASED ON RADAR.
&&
BHOVINGSPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
745 PM EDT WED AUG 22 2007
MIZ037>040-043>046-050>052-056>059-230045-
CLARE-CLINTON-GRATIOT-IONIA-ISABELLA-KENT-LAKE-MASON-MECOSTA-
MONTCALM-MUSKEGON-NEWAYGO-OCEANA-OSCEOLA-OTTAWA-
745 PM EDT WED AUG 22 2007
...THUNDERSTORMS DEVELOPING OVER WEST CENTRAL LOWER MICHIGAN...
AT 744 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THUNDERSTORMS WERE RAPIDLY DEVELOPING ACROSS WEST MICHIGAN NORTH OF
A HOLLAND TO LOWELL LINE. THESE STORMS WERE MOVING NORTHEAST AT 35
MPH.
THUNDERSTORMS WILL CONTINUE DEVELOPING THIS EVENING AND MANY OF THE
STORMS WILL CONTAIN WIND GUSTS TO 40 MPH AND SMALL HAIL. A COUPLE OF
THE STORMS WILL BE CAPABLE OF BECOMING SEVERE WITH WIND GUSTS TO 60
MPH.
KEEP AN EYE TO THE SKY TONIGHT AND SEEK SHELTER IF THREATENING
WEATHER APPROACHES.
LAT...LON 4413 8639 4355 8648 4278 8616 4279 8447
4348 8465 4413 8466
93The Grand Rapids radar (KGRR), 75 km away, was scanning. The volume nearest the first event began at 00:09 UTC.
8 thunderstorm wind, 1 hail. Local standard time, as filed.
Fully grown oak trees were blown down on some houses in Fruitland and Dalton townships. Some trees were reported to be eighteen inches in diameter. Measured 63 mph wind gusts were recorded at the Muskegon GLERL site and in Norton Shores.
A few trees and power lines were blown down.
Numerous trees were blown down in the city of Hudsonville and in Georgetown townships.
Several large trees were blown down in East Grand Rapids and Ada.
Numerous trees were blown down throughout the county.
Two trees were blown down east of Maple Rapids and south of Elsie.
Several trees were blown down in Ithaca and Perrinton.
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, August 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: 56698, 56709, 56712, 56715, 56716, 56719, 56718, 56723, 56720.