The far northern end of a weakening bow echo clipped Van Buren county before diminishing, resulting in localized wind damage near Paw Paw, where three trees were blown down and blocked area roads. The storm weakened to below severe levels as it moved further east into Kalamazoo county.
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.
The far northern end of a weakening bow echo clipped Van Buren county before diminishing, resulting in localized wind damage near Paw Paw, where three trees were blown down and blocked area roads. The storm weakened to below severe levels as it moved further east into Kalamazoo county.
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 4, 8:05 AM EST, 55 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND RAPIDS MI 905 AM EDT WED AUG 4 2010 LATEST UPDATE...SYNOPSIS/SHORT TERM/AVIATION... .SYNOPSIS...(905 AM EDT WED AUG 4 2010) WARM AND HUMID CONDITIONS WILL STICK AROUND FOR ANOTHER DAY BEFORE DRIER AIR ARRIVES THURSDAY AFTERNOON WITH THE PASSAGE OF A COLD FRONT. STRONG WINDS AND HEAVY RAINS WILL MOVE ACROSS THE INTERSTATE 94 CORRIDOR THIS MORNING. SCATTERED SHOWERS AND THUNDERSTORMS WILL ALSO ATTEND THE PASSAGE OF THE COLD FRONT ON THURSDAY. COMFORTABLE TEMPERATURE AND HUMIDITY READINGS WILL ARRIVE BEHIND THE FRONT FOR THURSDAY NIGHT AND FRIDAY. && .SHORT TERM...(905 AM EDT WED AUG 4 2010) (TODAY THROUGH FRIDAY) BUMPED UP POPS ACROSS THE SOUTHERN FORECAST AREA TO ACCOUNT FOR LONG LIVED BOW ECHO HOLDING TOGETHER AND PUSHING ACROSS THE I-94 CORRIDOR WITH HIGH WINDS AND HEAVY RAINS. REST OF PREVIOUS DISCUSSION FOLLOWS. THE MAIN PLAYER TODAY AND TONIGHT WILL BE A STATIONARY FRONT ACROSS NORTHERN INDIANA WHICH HAS...AND SHOULD CONTINUE TO BE...A FOCUS FOR SHOWERS AND STORMS. DEWPOINTS WILL CONTINUE TO INCH UPWARD INTO THE LOW AND MID 70S ACROSS SOUTHERN LOWER MICHIGAN NORTH OF THIS FRONT AND AS A RESULT THE INSTABILITY WILL BE GREATER OVER THE NEXT 24 HOURS. THE STRONGEST INSTABILITY REMAINS ALONG AND SOUTH OF I-96. GENERALLY DRY WEATHER IS EXPECTED ACROSS THE NORTHERN HALF OF THE CWA WHERE THE DEWPOINTS AND INSTABILITY WILL BE LOWER. A COLD FRONT WILL COME THROUGH ON THURSDAY AND MAY COME THROUGH WITHOUT MUCH FAN FARE. THE JET STRUCTURE IS NOT FAVORABLE AND WITH THE INDIANA STATIONARY FRONT SAGGING SOUTH IT WILL TAP MUCH OF THE MOISTURE AWAY FROM THE COLD FRONT. THEREFORE SLGT CHANCE POPS WERE ONLY CONTINUED FOR THE NORTHERN CWA THURSDAY AFTERNOON. A LONG WAVE UPPER THROUGH PASSES OVER THE REGION THURSDAY EVENING BRINGING A CHANGE FROM THE ZONAL FLOW TO A MORE NW FLOW. AS A RESULT THURSDAY NIGHT AND FRIDAY WILL SEE DRY WEATHER WITH COMFORTABLE TEMPS AND HUMIDITY. && .LONG TERM...(408 AM EDT WED AUG 4 2010) (FRIDAY NIGHT THROUGH TUESDAY) NO SIGNIFICANT CHANGES MADE TO THE GOING FORECAST. LOOKS LIKE HIGH PRESSURE WILL HOLD ON THROUGH SATURDAY...BUT WARM AIR ADVECTION PATTERN BEGINS SATURDAY NIGHT AND EXPECT SLIGHT CHANCE POPS BY SUNDAY IN INCREASINGLY MOIST SOUTHWEST FLOW. MODELS DIVERGE EARLY NEXT WEEK WITH THE EURO HAVING MORE UPPER AND SFC RIDGING WHILE THE GFS IS MORE ZONAL. GOING FORECAST OF SLIGHT CHANCE POPS WILL HAVE TO DO FOR NOW. && .AVIATION...(905 AM EDT WED AUG 4 2010) INCLUDED THUNDER ACROSS AZO AND BTL TO ACCOUNT FOR THE LINE OF STORMS MOVING ACROSS LAKE MICHIGAN ATTM. SOME MVFR AND IFR IS POSSIBLE UNTIL NOON AS THE STORMS MOVE THROUGH. OTHERWISE...FOG AND HAZE SHOULD BE LIFTING THIS MORNING WITH VFR EXPECTED LATER TODAY. && .MARINE...(408 AM EDT WED AUG 4 2010) LIGHT WINDS AND WAVES ARE EXPECTED THROUGH THURSDAY. HOWEVER BY THURSDAY NIGHT WEST WINDS AND COLD ADVECTION COULD BEGIN TO CAUSE CHOPPY CONDITIONS. IT APPEARS IT WILL BE BELOW SCA CRITERIA... HOWEVER WAVES WILL PROBABLY BUILD TO 2-4 FEET. && .HYDROLOGY...(408 AM EDT WED AUG 4 2010) LOCALLY HEAVY RAIN IS POSSIBLE SOUTH OF I-96 TODAY AND TONIGHT AS PWAT VALUES WILL BE 1.5 TO 2 INCHES AND ANY CELLS WILL BE MOVING SLOWLY...AROUND 20 MPH. HOWEVER ONLY WIDELY SCATTERED STORMS ARE EXPECTED SO RIVER BASIN AVERAGE QPF WILL BE TOO LOW TO CAUSE RISES ON AREA RIVERS. && .GRR WATCHES/WARNINGS/ADVISORIES... MI....NONE. LM....NONE. && SYNOPSIS: OSTUNO SHORT TERM: JK/OSTUNO LONG TERM: OSTUNO AVIATION: OSTUNO MARINE: JK HYDROLOGY: JK
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND RAPIDS MI 841 AM EDT WED AUG 4 2010 MIZ037>040-043>046-050>052-056>059-064>067-071>074-051245- MASON-LAKE-OSCEOLA-CLARE-OCEANA-NEWAYGO-MECOSTA-ISABELLA-MUSKEGON- MONTCALM-GRATIOT-OTTAWA-KENT-IONIA-CLINTON-ALLEGAN-BARRY-EATON- INGHAM-VAN BUREN-KALAMAZOO-CALHOUN-JACKSON- 841 AM EDT WED AUG 4 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER MICHIGAN. .DAY ONE...TODAY AND TONIGHT SOME STRONG THUNDERSTORM WINDS AND HEAVY RAIN ARE POSSIBLE THIS MORNING ALONG THE INTERSTATE 94 CORRIDOR. OTHERWISE...SCATTERED THUNDERSTORMS WILL BRING ISOLATED STRONG WIND GUSTS AND HEAVY RAIN. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THUNDERSTORMS ARE POSSIBLE ON THURSDAY AS A COLD FRONT MOVES THROUGH. THESE STORMS ARE NOT EXPECTED TO BE SEVERE BUT AN ISOLATED STORM MAY PRODUCE STRONG WIND GUSTS AND LARGE HAIL. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. LMZ844>849-051245- ST JOSEPH TO SOUTH HAVEN MI-SOUTH HAVEN TO HOLLAND MI- HOLLAND TO GRAND HAVEN MI-GRAND HAVEN TO WHITEHALL MI- WHITEHALL TO PENTWATER MI-PENTWATER TO MANISTEE MI- 841 AM EDT WED AUG 4 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER MICHIGAN. .DAY ONE...TODAY AND TONIGHT STRONG WINDS...LIGHTNING AND HEAVY RAIN ARE EXPECTED THIS MORNING SOUTH OF HOLLAND. THE LINE OF THUNDERSTORMS MAY ALSO PRODUCE A SEICHE OR RIP CURRENTS SOUTH OF PENTWATER. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THUNDERSTORMS ARE POSSIBLE ON THURSDAY AS A COLD FRONT MOVES THROUGH. THESE STORMS ARE NOT EXPECTED TO BE SEVERE BUT AN ISOLATED STORM MAY PRODUCE STRONG WIND GUSTS AND LARGE HAIL. WAVES MAY BE BUILDING TO 4 FEET BY THURSDAY AS NORTHWEST WINDS INCREASE BEHIND A COLD FRONT. OSTUNO
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS MI
954 AM EDT WED AUG 04 2010
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0945 AM TSTM WND GST W SOUTH HAVEN 42.40N 86.28W
08/04/2010 M43 MPH VAN BUREN MI CO-OP OBSERVER
MEASURED AT WATER FILTRATION PLANT
&&
CSCHOLTENThe Grand Rapids radar (KGRR), 80 km away, was scanning. The volume nearest the first event began at 13:57 UTC.
1 thunderstorm wind. Local standard time, as filed.
Three trees were blown down one mile east southeast of Paw Paw, blocking roads in that area.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Michigan in 2010Every state in 2010This day in weather historyWarnings in Michigan, August 2010
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: 245454.