4 thunderstorm wind, 1 tornado, as filed by the National Weather Service.
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 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 25, 3:00 PM EST, 1 hour 46 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND RAPIDS MI 400 PM EDT WED AUG 25 2004 .SHORT TERM... MAIN CONCERN IS HEAVY RAIN AND SVR WX POTENTIAL NEXT COUPLE DAYS. LOW LEVEL JET APPEARS TO BE STRENGTHENING AND NEW AREA OF CONVECTION HAS BLOSSOMED OVER SOUTHERN LAKE MICHIGAN. LATEST GUIDANCE HAS THE LLJ INCREASING TO GREATER THAN 40 KNOTS THIS EVENING... THEN PULLING OUT OF THE AREA ON THURSDAY MORNING. SINCE MOST OF THE UPSTREAM CONVECTION OVER THE LAST 24-36 HOURS HAS BEEN CLOSELY LINKED WITH THE LOW LEVEL JET... IT APPEARS SW MI WILL GET A MORE WIDESPREAD COVERAGE OF SHOWERS AND TSTMS THAN WEVE SEEN TODAY AND LAST NIGHT. BEST PVA TONIGHT IS OVER THE NW PORTION OF THE CWFA SO WILL HAVE HIGHEST POPS THERE. LOCALLY HEAVY RAIN IS STILL A CONCERN CONSIDERING THAT MID 70 DEWPOINTS ARE BEING ADVECTED NORTH AND PRECIPITABLE WATERS ARE AROUND 1.8 INCHES. THE LINE OF STORMS SW OF GRR WILL NEED TO BE CLOSELY WATCHED SINCE CAPES HAVE SUDDENLY JUMPED TO 3000 J/KG AROUND JXN WHERE SFC HEATING HAS BEEN TAKING PLACE. ON THURSDAY IT APPEARS THAT THE ZONE OF ACTIVE WEATHER WHICH IS BEEN DOWN ACROSS MO/IA/IL SHIFTS NE TOWARD SW MI. ALTHOUGH MODELS SHOW DEEPER MOISTURE PULLING AWAY WITH PASSAGE OF A SHORTWAVE IN THE MORNING... THE HIGHEST H8 THETA-E AIR WILL BE NOSING IN FROM THE SW. PRONOUNCED THERMAL RIDGE OF 20C AT H8 WILL ALSO BE POINTED INTO THE AREA. LOW TO MID 70 DEW POINTS ARE PROGGED OVER THE AREA... SO WITH ANY HEATING... INSTABILITY COULD SOAR. HOWEVER MODELS SHOW BEST INSTABILITY (LI/S TO MINUS 10 AND CAPES TO 4000 J/KG OUT TO OUR WEST. SPC HAS WI IN THE MDT RISK OF SVR WX AND PARTS OF OUR AREA IN A SLIGHT... SO IT COULD BE A RATHER ACTIVE DAY. ONE POSSIBILITY THOUGH IS THAT THE ATMOSPHERE COULD BECOME CAPPED AS ALL THE WARM AIR ALOFT COMES IN... AND THIS COULD DELAY ANY TSTM DEVELOPMENT UNTIL LATE THURSDAY NIGHT AS THE COLD FRONT APPROACHES. WILL CARRY CHANCE POPS FOR BOTH THURSDAY AND THURSDAY NIGHT... ALTHOUGH LIKELY POPS IN THE NW LATE THURS NIGHT WHERE THE COLD FRONT WILL BE COMING IN AFTER 06Z. ON FRIDAY THE COLD FRONT WILL BE SLIPPING SLOWLY SE THROUGH AND WILL NEED TO MAINTAIN CHC POPS FOR SHOWERS AND TSTMS. THINGS DRY OUT ON FRIDAY NIGHT AS A SURFACE HIGH BUILDS INTO THE REGION...THEN ON SATURDAY THE FRONT SHOULD BE STALLED JUST TO OUR SOUTH AND WILL FEATURE A DRY BUT COOLER FCST. .LONG TERM... LATEST GLOBAL CANADIAN, GFS AND ECMWF GUIDANCE IS NOW IN REASONABLY GOOD AGREEMENT IN SUGGESTING THAT THE SFC HIGH PRESSURE RIDGE WILL BE SITUATED TO OUR NORTH SATURDAY NIGHT WITH THE FRONTAL BOUNDARY HUNG UP JUST TO OUR SOUTH ACROSS IN/OH. WELL BE IN CLOSE ENOUGH PROXIMITY TO THE BOUNDARY TO MENTION LOW CHC POPS FOR SATURDAY NIGHT (BEST CHANCE OVER OUR SOUTHERN CWA). THEN ON SUNDAY IT APPEARS A LOW PRESSURE WAVE WILL DEVELOP AND TRACK NE ALONG THE BOUNDARY AND A PRETTY STRONG SHORTWAVE WILL MOVE THROUGH OUR REGION TOO. THEREFORE, WE WILL HAVE TO KEEP A MENTION OF SHOWERS AND STORMS IN THE FORECAST SUNDAY (SHOULD BE MAINLY SHOWERS IN COOL NE FLOW NORTH OF THE BOUNDARY AND LOW PRESSURE WAVE TRACK). BEHIND THAT DEPARTING LOW PRESSURE WAVE AND SHORTWAVE IT APPEARS A SFC HIGH PRESSURE RIDGE WILL TAKE CONTROL OF OUR WX PATTERN EARLY NEXT WEEK. IT WILL PRODUCE DRY WX WITH SEASONABLE TEMPS. SIGNIFICANT COOLING TREND IS NOTED IN MEX NUMERICAL GUIDANCE FOR SATURDAY NIGHT THROUGH SUNDAY NIGHT SO WE BUMPED DOWN THE MAX/MIN TEMP FORECAST IN THAT PERIOD A BIT MORE. && .GRR WATCHES/WARNINGS/ADVISORIES...SMALL CRAFT ADVISORY HOLLAND NORTH TO MANISTEE. MEADE LAURENS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND RAPIDS MI 500 PM EDT WED AUG 25 2004 LMZ843>849-260831- 500 PM EDT WED AUG 25 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER MICHIGAN. .DAY ONE...TONIGHT WHILE NOT WIDESPREAD...AREAS OF DENSE FOG ON LAKE MICHIGAN WILL POSE A THREAT TO MARINERS THIS EVENING INTO TONIGHT. WAVES OF 3 TO 5 FEET CAN BE EXPECTED FROM HOLLAND NORTH TO MANISTEE...CREATING HAZARDOUS CONDITIONS FOR SMALL CRAFT. ALSO...SCATTERED THUNDERSTORMS MAY PRODUCE DANGEROUS CLOUD TO WATER LIGHTNING STRIKES AND TORRENTIAL DOWNPOURS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY SMALL CRAFT ADVISORIES MAY BE NEEDED THURSDAY NIGHT FOR WAVES 3 TO 5 FEET...ALONG WITH 15 TO 25 KNOT WINDS. SCATTERED THUNDERSTORMS WILL POSE A THREAT TO MARINERS THROUGH FRIDAY. SOME THUNDERSTORMS THURSDAY NIGHT MAY PRODUCE WINDS IN EXCESS OF 35 KNOTS. MIZ037>040-043>046-050>052-056>059-064>067-071>074-260831- ALLEGAN MI-BARRY MI-CALHOUN MI-CLARE MI-CLINTON MI-EATON MI- GRATIOT MI-INGHAM MI-IONIA MI-ISABELLA MI-JACKSON MI-KALAMAZOO MI- KENT MI-LAKE MI-MASON MI-MECOSTA MI-MONTCALM MI-MUSKEGON MI- NEWAYGO MI-OCEANA MI-OSCEOLA MI-OTTAWA MI-VAN BUREN MI- INCLUDING THE CITIES OF...ALBION...ALLEGAN...ALMA...BALDWIN... BATTLE CREEK...BELDING...BIG RAPIDS...CHARLOTTE...CLARE...EASTWOOD... EATON RAPIDS...EVART...GRAND HAVEN...GRAND RAPIDS...GREENVILLE... HART...HASLETT...HASTINGS...HOLLAND...IONIA...ITHACA...JACKSON... KALAMAZOO...LANSING...LOWELL...LUDINGTON...MARSHALL...MASON... MOUNT PLEASANT...MUSKEGON...NEWAYGO...PAW PAW...PLAINWELL... PORTAGE...PORTLAND...SOUTH HAVEN...ST. JOHNS...STANTON... VANDERCOOK LAKE...WESTWOOD AND WHITE CLOUD 1210 PM EDT WED AUG 25 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST LOWER MICHIGAN. .DAY ONE...TONIGHT THUNDERSTORMS ARE POSSIBLE THIS EVENING OVER THE ENTIRE AREA. HOWEVER...THE STRONGEST STORMS WILL LIKELY STAY ALONG AND SOUTH OF INTERSTATE 94 INTO LATE THIS EVENING. THERE IS A SLIGHT RISK SOME OF THE STORMS COULD BE SEVERE NEAR AND SOUTH OF INTERSTATE 94. WIND GUSTS TO 60 MPH ARE THE MOST LIKELY SEVERE WEATHER THREAT THIS EVENING. AN ISOLATED TORNADO WOULD NOT BE OUT OF THE QUESTION EITHER. VERY HEAVY RAINFALL AND FREQUENT CLOUD TO GROUND LIGHTING ARE ALSO EXPECTED WITH THOSE STORMS. HOURLY RAINFALL AMOUNTS COULD APPROACH 2 INCHES IN SOME OF THE STRONGER THUNDERSTORMS THIS EVENING. NORTH OF INTERSTATE 94...SEVERE THUNDERSTORMS ARE NOT EXPECTED BUT A FEW STRONG THUNDERSTORMS WITH WIND GUSTS TO 40 MPH ARE POSSIBLE THIS EVENING EAST OF GRAND RAPIDS. HOURLY RAINFALL AMOUNTS NORTH OF INTERSTATE 94 AND EAST OF GRAND RAPIDS COULD REACH 1 INCH PER HOUR. NORTH AND WEST OF GRAND RAPIDS AN ISOLATED THUNDERSTORM IS POSSIBLE TILL MIDNIGHT BUT HOURLY RAINFALL AMOUNTS WILL BE LESS THAN A HALF INCH EVEN IN THOSE ISOLATED HEAVY THUNDERSTORMS. BY MIDNIGHT THE STORMS WILL HAVE EITHER WEAKENED OR MOVED NORTHEAST OUT OF SOUTHWEST MICHIGAN. MEANWHILE...ALL STORMS WILL MOVE NORTHEAST BETWEEN 25 AND 30 MPH. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY A SLIGHT RISK FOR SEVERE THUNDERSTORMS EXISTS ALONG AND NORTH OF A LINE FROM KALAMAZOO TO SAINT JOHNS FOR THURSDAY EVENING...AND THURSDAY NIGHT. DAMAGING WINDS AND LARGE HAIL ARE THE PRIMARY THREATS. RAINFALL WILL BE LOCALLY TORRENTIAL...WITH AN INCH OR TWO OF RAIN IN AN HOUR POSSIBLE WITH THE STRONGER STORMS THURSDAY INTO FRIDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED THURSDAY EVENING INTO THURSDAY NIGHT. MJS BDM WDM
The Grand Rapids radar (KGRR), 50 km away, was scanning. The volume nearest the first event began at 21:44 UTC.
4 thunderstorm wind, 1 tornado. Local standard time, as filed.
An emergency manager in Nashville reported that five trees were blow down there.
The Maple Valley High School in Vermontville suffered significant damage including a roof which was partially torn off and sections of windows which were blown in.
A very brief touchdown of a F0 tornado occurred in Vermontville. There were no injuries and fatalities. However, a tin roof was blown off of a house on First Street in Vermontville.
Several trees were blown down two miles southwest of Saranac and also in Portland.
An emergency manager three miles east of Ithaca reported that several trees and limbs as well as power lines were blown down.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Michigan in 2004Every state in 2004This day in weather historyThe tornado archive for Michigan, 2004Warnings in Michigan, August 2004
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: 5419528, 5419530, 5419529, 5419531, 5419532.