4 thunderstorm wind, 3 hail, 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 Northern Indiana wrote its last area forecast discussion before the first event at Aug 9, 2:42 PM EST, 3 hours 43 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORTHERN INDIANA 242 PM EST MON AUG 9 2004 .SHORT TERM... TODAY AND TONIGHT...MONITORING SATELLITE AND RADAR TRENDS FOR TSRA DEVELOPMENT ALONG PRE-FRONTAL TROUGH AND SURFACE COLD FRONT THIS AFTERNOON. SURFACE BASED INSTABILITY SLOWLY INCREASING BUT NOT OVERLY IMPRESSIVE WITH DEWPOINTS IN THE LOWER 60S AND TEMPS JUST REACHING THE LOWER 80S. INITIAL TROUGH AND MIXING HAVE RESULTED IN SOUTHWEST SURFACE WINDS AND THIS APPEARS TO HAVE REDUCED SURFACE CONVERGENCE ALONG SOUTHERN END OF COLD FRONT. OUR AREA ALSO IS ON THE RIGHT FRONT ENTRANCE REGION OF UPPER JET. THESE TWO FACTORS COUPLED WITH A POSSIBLE WEAK CAPPING INVERSION SEEM TO BE THE LIMITING FACTORS ON CONVECTION THIS AFTERNOON. TOWERING CUMULUS ON SATELLITE ALONG FRONT FROM WISCONSIN TO NORTHERN ILLINOIS IS STEADILY MARCHING EAST. WILL BE WATCHING TO SEE IF THIS EVENTUALLY DEVELOPS INTO LINE OF TSRA. WILL BE CONTINUING CHANCES FOR TSRA AND SVR WORDING THIS EVENING AS MID LEVEL 50KT SPEED MAX ACCOMPANIES SURFACE FRONT BRINGING SEVERE WIND THREAT WITH ANY THUNDERSTORMS. NEXT FORECAST CHALLENGE WILL BE CLOUD COVER BEHIND FRONT. COLD AIR ADVECTION BEGINS OVERNIGHT AND CONTINUES TUESDAY. WILL LIKELY SEE ONLY SCATTERED CLOUDS BEHIND FRONT TONIGHT BUT THEN SHOULD SEE RAPID CUMULUS DEVELOPMENT TUESDAY MORNING WITH COLD AIR ADVECTION AND SURFACE HEATING. BEST CHANCE FOR INSTABILITY SHOWERS APPEARS TO BE JUST NORTH OF OUR AREA TUESDAY AFTERNOON. CANNOT RULE OUT SHOWERS CLIPPING NORTHERN COUNTIES BUT CURRENT THOUGHTS ARE TO HOLD ONTO DRY FORECAST FOR NOW. GOING TEMPERATURES LOOK GOOD BUT DID DROP A FEW DEGREES GIVEN BKN-OVC CLOUD COVER EXPECTED IN AFTERNOON. && .LONG TERM... TUESDAY NIGHT THROUGH MONDAY...UNSEASONABLY COOL PATTERN SETTING UP INTO THE WEEKEND. STRONG VORT MAX UPSTREAM SHOULD TRACK ACROSS LOWER MICHIGAN LATE TUESDAY NIGHT OR EARLY WEDNESDAY. COULD BE SOME SHOWERS LATE TUESDAY NIGHT INTO FAR SW LOWER MI AND FAR N INDIANA. HOWEVER...WILL KEEP SHOWERS OUT UNTIL WEDNESDAY MORNING GIVEN PREFERENCE OF THE SLOWER GFS/NGM OVER THE ETA IN THE LOW ZONAL PATTERN WITH UPSTREAM BLOCK. THIS TIMING WOULD BRING THE SYSTEM INTO THE AREA WEDNESDAY MORNING. WEDNESDAY THROUGH FRIDAY SHOULD HAVE THE SAME BASIC PATTERN... ANY BREAKS IN THE CLOUDS THAT DEVELOP OVERNIGHT SHOULD QUICKLY FILL IN AFTER SUNRISE AS PLENTY OF MOISTURE WILL REMAIN TRAPPED BELOW THE INVERSION. HAVE LOWERED TEMPERATURES 1-5 DEGREES DURING THE SECOND HALF OF THE WEEK GIVEN NCEP MODELS STILL HOLDING ONTO VERY COLD LOW LEVEL TEMPS WITH UPSTREAM BLOCK. 850 MB TEMPS COLDEST FROM WEDNESDAY AFTERNOON INTO FRIDAY MORNING...SO HAVE LOWER TEMPS...ESPECIALLY HIGH TEMPS. HAVE GONE 1-2 DEGREES ABOVE RECORD LOWEST HIGHS FOR SBN/FWA...WHICH APPEARS REASONABLE WITH THIS PATTERN. WILL KEEP SATURDAY THROUGH MONDAY DRY WITH A GRADUAL WARMING TREND AS UPPER TROF FINALLY MOVES EAST. && .AVIATION... IN A WAITNG PATTERN AT ISSUANCE TIME WITH RESPECT TO TSRA DEVELOPMENT. A COUPLE AREAS BEING MONITORED INCLUDE A PRE-FRONTAL TROUGH MOVING ACROSS LAKE MICHIGAN AT 17Z. TSRA OCCURING ALONG NORTHERN EXTENT AND SOME CU DEVELOPMENT SOUTH. THIS FEATURE SHOULD BE THROUGH KSBN BEFORE MUCH DEVELOPMENT CAN TAKE PLACE AND KFWA PROBABLY TOO FAR SOUTH AND EAST. THUS NO MENTION OF ACTIVITY IN TAFS THIS AFTERNOON AS OF RIGHT NOW. BEST CHANCE FOR TSRA WILL OCCUR ALONG FRONT WHICH IS NOW MOVING INTO NORTHWEST ILLINOIS. LINE OF TOWERING CUMULUS DEVELOPING AND THIS AREA MOVING INTO INCREASING UNSTABLE AIRMASS ACROSS NORTHERN ILLINOIS AND SOUTHERN WISCONSIN. IF THIS LINE CAN GET GOING IT SHOULD MOVE EAST AND AFFECT KSBN AROUND 00Z AND KFWA 02Z. GIVEN UNCERTAINTY HAVE REMOVED TEMPO GROUP AND REPLACED WITH VCTS. && LASHLEY/SKIP
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NORTHERN INDIANA 325 AM EST MON AUG 9 2004 INZ003>009-012>018-020-022>027-032>034-MIZ077>081-OHZ001-002-004-005- 015-016-024-025-100824- ADAMS IN-ALLEN OH-ALLEN IN-BERRIEN MI-BLACKFORD IN-BRANCH MI-CASS MI- CASS IN-DE KALB IN-DEFIANCE OH-ELKHART IN-FULTON OH-FULTON IN- GRANT IN-HENRY OH-HILLSDALE MI-HUNTINGTON IN-JAY IN-KOSCIUSKO IN- LA PORTE IN-LAGRANGE IN-MARSHALL IN-MIAMI IN-NOBLE IN-PAULDING OH- PULASKI IN-PUTNAM OH-ST. JOSEPH MI-ST. JOSEPH IN-STARKE IN- STEUBEN IN-VAN WERT OH-WABASH IN-WELLS IN-WHITE IN-WHITLEY IN- WILLIAMS OH- INCLUDING THE CITIES OF...ANGOLA...ARCHBOLD...AUBURN... BENTON HARBOR...BENTON HEIGHTS...BERNE...BLUFFTON...BREMEN...BRYAN... BUCHANAN...BUTLER...COLDWATER...COLUMBIA CITY...DECATUR...DEFIANCE... DELPHOS...DOWAGIAC...DUNKIRK...DUNLAP...ELKHART...FAIR PLAIN... FAIRMOUNT...FORT SHAWNEE...FORT WAYNE...GARRETT...GAS CITY... GEORGETOWN...GOSHEN...GRANGER...GRISSOM AFB...GULIVOIRE PARK... HARTFORD CITY...HICKSVILLE...HILLSDALE...HUNTINGTON...KENDALLVILLE... KNOX...LA PORTE...LAGRANGE...LIGONIER...LIMA...LOGANSPORT...MARION... MICHIGAN CITY...MISHAWAKA...MONTICELLO...MONTPELIER...NAPOLEON... NAPPANEE...NEW HAVEN...NILES...NORTH MANCHESTER...OSSIAN...OTTAWA... PERU...PLYMOUTH...PORTLAND...ROCHESTER...SIMONTON LAKE... SOUTH BEND...ST. JOSEPH...STURGIS...SWANTON...SYRACUSE... THREE RIVERS...TRAIL CREEK...TRI-LAKES...UPLAND...VAN WERT... WABASH...WARSAW...WAUSEON...WESTVILLE...WINAMAC AND WINONA LAKE 325 AM EST MON AUG 9 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN INDIANA...NORTHWEST OHIO AND SOUTHWEST LOWER MICHIGAN. .DAY ONE...TODAY AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND THIS EVENING. THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG AND AHEAD OF A COLD FRONT WHICH WILL MOVE ACROSS NORTHERN ILLINOIS TODAY... AND ACROSS SOUTHERN MICHIGAN... NORTHERN INDIANA... AND WESTERN OHIO TONIGHT. THE STORMS WILL MOVE EAST AROUND 30 MPH AND SOME MAY CONTAIN LARGE HAIL AND DAMAGING WINDS THIS AFTERNOON AND THIS EVENING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED THIS AFTERNOON AND THIS EVENING.
The Chicago radar (KLOT), 99 km away, was scanning. The volume nearest the first event began at 23:27 UTC.
4 thunderstorm wind, 3 hail. Local standard time, as filed.
Great Lakes Environmental Research Laboratory observing sight at Michigan City recorded a wind gust to 65 MPH.
Amateur radio reported wind gusts between 60 and 70 MPH just north of the Indiana Toll Road north of South Bend.
Local television reported several very large trees down in Mishawaka with winds estimated between 70 and 80 MPH.
Emergency manager reported several trees down in Goshen.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Indiana in 2004Every state in 2004This day in weather historyWarnings in Indiana, 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: 5420663, 5420664, 5420907, 5420906, 5420665, 5420908, 5420909.