1 flood, 1 flash flood, as filed by the National Weather Service.
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. 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, 2:00 AM EST, 11 hours 22 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORTHERN INDIANA 200 AM EST THU AUG 9 2001 FOCUS THIS FCST PERIOD WILL SHIFT FROM HEAT AND HUMIDITY TO TSRA POTENTIAL THIS AFTN/TONIGHT WITH APPROACH OF COLD FRONT. LATEST SFC ANALYSIS HAS COLD FRONT EXTENDING FROM ARROWHEAD OF MN DOWN INTO NORTHEAST NEB. WILL SEE ONE MORE HOT AND HUMID DAY TODAY ALTHOUGH EXPECT TEMPS TO BE A FEW COOLER THAN YESTERDAYS READINGS AS CLOUDS WILL BE ON THE INCREASE THIS AFTERNOON. FRONT TO MOVE DOWN INTO S LK MI BY 00Z FRI. UNSTABLE AIRMASS OVER THE AREA THIS AFTERNOON OUT AHEAD OF FRONT WITH LI TO -5 AND CAPE GT 2500J/KG. INC SW FLOW WILL TAP INTO TROPICAL MOISTURE FROM WHATS LEFT OF BARRY. THIS COMBINATION WILL BRING A CHANCE FOR TSRA THIS AFTERNOON ACROSS THE ENTIRE AREA. ANY STORMS THIS AFTERNOON WILL BE GENERAL AIRMASS TYPE AND WITH WBZ ABOVE 12KFT NOT MUCH SVR POTENTIAL THERE. BETTER CHANCE FOR STRONG/SEVERE STORMS WILL BE WITH ARRIVAL OF FRONT TONIGHT. GOOD FORCING ALONG FRONT LATE THIS AFTERNOON COMBINED WITH DESTABILIZATION OF AIRMASS SHOULD RESULT IN SQUALL LINE TYPE DEVELOPMENT TO OUR NW AND THEN MOVE ACROSS THE CWA TONIGHT. CWA WILL BE IN AREA OF UPPER LEVEL DIVERGENCE AS UPPER JET MOVES ACROSS NORTHERN GREAT LAKES REGION. DECENT VERTICAL WIND SHEAR PROFILE ALSO TAKES SHAPE SO SVR STORMS POSSIBLE TONIGHT AND WILL WORD ACCORDINGLY IN ZONES. WILL CONTINUE TOWARD HIGHER MAV POPS AND KEEP LIKELY WORDING FOR TONIGHT. MAY SEE A LINGERING SHRA IN SE FRI MORNING SO WILL ALSO KEEP SMALL CHANCE THERE AS WELL. COOL DRY AIRMASS SHOULD PROVIDE GREAT WX THIS WEEKEND. FROPA ON DAY 5 STILL LOOKING RATHER UNIMPRESSIVE BUT WILL LEAVE AS IS FOR NOW. GUIDANCE FAIRLY CLOSE ALL PERIODS AND LOOK REASONABLE. .IWX...NONE. JAL
INZ003>009-012>018-020-022>027-032>034-MIZ077>081-OHZ001-002-004-005- 015-016-024-025-092300- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE NORTHERN INDIANA 1245 PM EST THU AUG 9 2001 ...SLIGHT RISK OF SEVERE THUNDERSTORMS THIS EVENING INTO TONIGHT... AN APPROACHING COLD FRONT WILL TRIGGER THUNDERSTORMS OVER THE AREA THIS EVENING. AS THE FRONT APPROACHES IT WILL ENCOUNTER AN UNSTABLE AIRMASS ALONG WITH FAVORABLE UPPER LEVEL DYNAMICS ALLOWING SOME STORMS TO REACH SEVERE LIMITS. THE POTENTIAL FOR DAMAGING WIND GUSTS TO 60 MPH WITH A FEW OF THE STRONGER STORMS WILL BE THE PRIMARY THREAT. THE MOST LIKELY TIMING OF THE STORMS IS THAT THEY ARE EXPECTED TO MOVE INTO NORTH CENTRAL INDIANA AND EXTREME SOUTHWEST LOWER MICHIGAN AROUND SUNSET. THE STORMS WILL MOVE EAST AND ARE PROJECTED TO MOVE INTO NORTHWEST OHIO BETWEEN 10 PM EDT AND 12 MIDNIGHT. SPOTTER ACTIVATION MAY BE REQUIRED. STAY TUNED TO NOAA WEATHER RADIO AND LOCAL MEDIA FOR FURTHER UPDATES.
The national radar mosaic for the moment the first event began.
1 flood, 1 flash flood. Local standard time, as filed.
Intersections flooded at SR 15 and 22, and SR 9 and 22, and SR 22 and US 35.
US 22 and 35 at CR 400 W impassable up to 1.5 ft of water. Many other roads floodedin Jonesboro. About 10 homes with basement flooding. Factory evacuated and water beingpumped out. Vehicle rescue attempted at 10th Street in Jonesboro, occupant made it tosafety.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Indiana in 2001Every state in 2001This day in weather historyWarnings in Indiana, August 2001
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: 5261816, 5261815.