Scattered thunderstorms developed across southern portions of Central Indiana during the afternoon of August 12th. Reports of a funnel cloud near Vincennes came in from multiple sources as a storm passed overhead.
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 IND wrote it up.
Scattered thunderstorms developed across southern portions of Central Indiana during the afternoon of August 12th. Reports of a funnel cloud near Vincennes came in from multiple sources as a storm passed overhead. Also, a tree was struck by lightning over on the east side of Vincennes.
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 Indianapolis, IN wrote its last area forecast discussion before the first event at Aug 12, 1:25 PM EST, 2 hours 14 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE INDIANAPOLIS IN 225 PM EDT THU AUG 12 2010 .UPDATE... THE SYNOPSIS...NEAR TERM...SHORT TERM AND LONG TERM SECTIONS HAVE BEEN UPDATED BELOW && .SYNOPSIS... AN LARGE DOME OF UPPER LEVEL HIGH PRESSURE ACROSS THE MISSISSIPPI VALLEY WILL SETTLE SLOWLY EASTWARD ACROSS THE OHIO VALLEY EARLY THIS WEEKEND ALLOWING THE DANGEROUS HEAT AND HUMIDITY TO CONTINUE THROUGH SATURDAY. MEANWHILE...A COLD FRONT WILL SLIDE SOUTHEAST ACROSS CENTRAL INDIANA ON SUNDAY BRINGING A CHANCE OF THUNDERSTORMS STARTING FRIDAY NIGHT AND CONTINUING THROUGH SUNDAY. IN THE FRONT'S WAKE...TEMPERATURES AND HUMIDITY LEVELS WILL NOT BE QUITE AS HIGH NEXT WEEK. && .NEAR TERM /TONIGHT/... AFOREMENTIONED UPPER RIDGE ACROSS THE MISSISSIPPI VALLEY WAS KEEPING IT HOT AND HUMID ACROSS CENTRAL INDIANA THIS AFTERNOON WITH WITH 1 PM EDT TEMPERATURES ALREADY IN THE LOWER 90S EXCEPT ACROSS NORTHEASTERN PARTS OF THE FORECAST AREA. HEAT INDICES WERE ALSO BEGINNING TO EXCEED 100 WITH DEW POINTS STILL IN THE LOWER TO MID 70S. FINALLY...THUNDERSTORMS WERE GOING UP ALONG A BOUNDARY AND IN THE VICINITY OF A WEAK SHORT WAVE RIDING UNDERNEATH THE RIDGE ACROSS SOUTHERN ILLINOIS. THIS ACTIVITY LOOKS LIKE IT WIL NOT MOVE ACROSS SOUTHERN PARTS OF CENTRAL INDIANA ESPECIALLY THIS EVENING. SO...WILL KEEP THE FORECAST DRY TONIGHT. FAVOR GOING WITH PERSISTANCE REGARDING OVERNIGHT LOW TEMPERATURES BASED THE UNCHANGED AIRMASS AND ON CONTINUED TRENDS OF THE MODELS TO UNDERESTIMATE BOTH TEMPERATURES AND DEW POINTS. WILL ALSO GO WITH LITTLE CLOUD COVER WITH A FAIRLY DRY COLUMN AND HIGH PRESSURE. FINALLY...FOG HAS BEEN VERY ISOLATED AND BRIEF THE PAST FEW DAYS AND WITH LACK OF RAINFALL TODAY...DONT SEE IT BEING ENOUGH OF A PROBLEM TO MENTION IN THE GRIDS. && .SHORT TERM /SATURDAY THROUGH SUNDAY/... MAIN FOCUS TO THE SHORT TERM FORECAST WILL CONTINUE TO BE THE HEAT AND HUMIDITY AS MISSISSIPPI VALLEY UPPER RIDGE SETTLES EAST ACROSS THE OHIO VALLEY LATE THIS WEEK AND INTO THE WEEKEND. SECONDAY ISSUE WILL BE TIMING AND THUNDERSTORM CHANCES AHEAD OF AN APPROACHING COLD FRONT. PREFER THE 00Z EUROPEAN MODEL WITH REGARDS TO TIMING OF THE COLD FRONT ACROSS CENTRAL INDIANA ON SUNDAY AS IT SPLIT THE DIFFERENCE BETWEEN THE FASTER 12Z OPERATIONAL GFS AND HEMISPHERIC CANADIAN WITH THE SLOWER 12Z NAM AND IS GENERALLY THE BEST MODEL HANDLING SYNOPTIC SYSTEMS THAST FAR OUT. THE 00Z EUROPEAN ALSO IS PRETTY CLOSE TO THE 09Z SREF REGARING FRONTAL POSITION. WITH THAT IN MIND...EXPECT THE FRONT TO BE NEAR A FORT WAYNE TO INDIANAPOLIS TO TERRE HAUTE LINE BY 18Z SUNDAY AND EAST OF THE FORECAST AREA BY 00Z MONDAY. SO...WILL KEEP SLIGHT CHANCE OF THUNDERSTORMS IN ON FRIDAY NIGHT AHEAD OF THE FRONT...AND CHANCES WILL BE INCREASING SATURDAY AND SATURDAY NIGHT AS DEEPER MOISTURE ARRIVES ALONG WITH UPPER LEVEL DIFFLUENCE. ACTIVITY SHOULD BE ENDING FROM NORTHWEST TO SOUTHEAST BEHIND THE FRONT DURING THE DAY SUNDAY. NORTHWESTERN PARTS ARE IN THE DAY 3 SLIGHT RISK WHICH APPEARS REASONABLE BASED ON BULK OF THE STORM ACTIVITY SHOULD BE THERE PRIOR TO SUNSET BASED ON MORE INSTABILITY AND IN CLOSER PROXIMITY TO BETTER UPPER LEVEL FORCING. AFTERNOON MODEL MIXED LAYER CAPE FORECASTS ARE AROUND 3000 J/KG THERE AND AROUND 1000 J/KG ACROSS OUT SOUTHEAST. PREFER TO GO WITH HIGHER DAYIME AND NIGHTTIME TEMPERATURES THAN THE WARMER GFS MOS BASED ON MOS TRENDS OF UNDERESTIMATING TEMPERATURES AND DEW POINTS LATELY AND THROUGH MOST OF THE SUMMER AND AIRMASS TO REMAIN VIRTUALY UNCHANGED. MODEL LOW LEVEL THICKNESSES AND 850 MILLIBAR TEMPERAURES REMAIN RELATIVLY CHANGED THROUGH SATURDAY. THUS WITH LITTLE CHANGES EXPECTED... WILL KEEP HEAT WARNING GOING THROUGH 00Z SATURDAY ACROSS ALL BUT FAR NORTHEASTERN ZONES WHERE A HEAT ADVISORY WILL CONTINUE. && .LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/... LOOKS LIKE A RELATIVELY DRIER AND LESS HOT PERIOD NEXT WEEK AS CANADIAN TROFFFING SETUPS UPPER NORTHWEST FLOW ACROSS THE OHIO VALLEY. && .AVIATION /DISCUSSION FOR THE 121800Z TAFS/... SCATTERED CU CAN BE EXPECTED THROUGH 00Z UNTIL THEY DISSIPATE WITH LOSS OF HEATING. WITH CLEAR SKIES...LIGHT WINDS...AND LOW LEVEL MOISTURE...EXPECT MVFR FOG TO FORM AT ALL SITES BUT KIND OVERNIGHT. KIND WILL HAVE THE HEAT ISLAND AND A LIGHT EAST WIND FROM THE CITY HELPING TO KEEP THEM VFR. WOULD NOT RULE OUT PERIODS OF IFR AT THE OUTLIER SITES AS WELL...BUT CONFIDENCE ON TIMING NOT HIGH ENOUGH TO INCLUDE. ANY FOG WILL BURN OFF BY 14Z FRIDAY...AND THEN SCATTERED CU WILL FORM AGAIN. BEST CHANCES FOR ANY THUNDER LOOK TO BE SOUTH OF THE TAF SITES THROUGH THE PERIOD. && .IND WATCHES/WARNINGS/ADVISORIES... EXCESSIVE HEAT WARNING UNTIL 8 PM EDT FRIDAY FOR INZ021-028>030- 035>037-043>048-051>057-060>065-067>072. HEAT ADVISORY UNTIL 8 PM EDT FRIDAY FOR INZ031-038>042-049. && SYNOPSIS...MK NEAR TERM...MK SHORT TERM...MK LONG TERM....MK AVIATION...50
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE INDIANAPOLIS IN 351 AM EDT THU AUG 12 2010 INZ031-038>042-049-130800- HOWARD-TIPTON-HAMILTON-MADISON-DELAWARE-RANDOLPH-HENRY- 351 AM EDT THU AUG 12 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL INDIANA. .DAY ONE...TODAY AND TONIGHT. ...A HEAT ADVISORY IS IN EFFECT UNTIL 8 PM EDT FRIDAY... HEAT INDEX VALUES WILL REACH THE 99 TO 103 DEGREE RANGE TODAY AND FRIDAY AFTERNOON...AS AIR TEMPERATURES RISE INTO THE LOW 90S. THE HEAT INDEX WILL ONLY FALL INTO THE LOW TO MID 70S DURING THE OVERNIGHT HOURS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. ...A HEAT ADVISORY IS IN EFFECT UNTIL 8 PM EDT FRIDAY... HEAT INDEX VALUES OF 99 TO 103 ARE LIKELY AGAIN FRIDAY AFTERNOON. HEAT INDEX READINGS NEAR 100 DEGREES ARE ALSO POSSIBLE SATURDAY AFTERNOON. THUNDERSTORMS ARE POSSIBLE FRIDAY NIGHT THROUGH THIS WEEKEND. IT IS TOO SOON TO DETERMINE IF THE STORMS WILL BE SEVERE...HOWEVER LIGHTNING IS A THREAT FROM ANY THUNDERSTORM. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. && MORE INFORMATION...ALONG WITH OTHER WEATHER...HYDROLOGICAL AND CLIMATE INFORMATION CAN BE FOUND...AT HTTP://WEATHER.GOV/IND (ALL LOWERCASE) INZ021-028>030-035>037-043>048-057-130800- CARROLL-WARREN-TIPPECANOE-CLINTON-FOUNTAIN-MONTGOMERY-BOONE- VERMILLION-PARKE-PUTNAM-HENDRICKS-MARION-HANCOCK-RUSH- 351 AM EDT THU AUG 12 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL INDIANA. .DAY ONE...TODAY AND TONIGHT. ...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 8 PM EDT FRIDAY... HEAT INDEX VALUES WILL REACH THE 105 TO 110 DEGREE RANGE TODAY AND FRIDAY AFTERNOON...AS AIR TEMPERATURES RISE INTO THE MID TO UPPER 90S. THE HEAT INDEX WILL ONLY FALL INTO THE MID TO UPPER 70S DURING THE OVERNIGHT HOURS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. ...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 8 PM EDT FRIDAY... HEAT INDEX VALUES OF 104 TO 110 WILL OCCUR FRIDAY AFTERNOON. HEAT INDEX READINGS IN EXCESS OF 100 DEGREES ARE ALSO LIKELY SATURDAY AFTERNOON. THUNDERSTORMS ARE POSSIBLE FRIDAY NIGHT THROUGH THIS WEEKEND. IT IS TOO SOON TO DETERMINE IF THE STORMS WILL BE SEVERE...HOWEVER LIGHTNING IS A THREAT FROM ANY THUNDERSTORM. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. && MORE INFORMATION...ALONG WITH OTHER WEATHER...HYDROLOGICAL AND CLIMATE INFORMATION CAN BE FOUND...AT HTTP://WEATHER.GOV/IND (ALL LOWERCASE) INZ051>056-060>065-067>072-130800- VIGO-CLAY-OWEN-MORGAN-JOHNSON-SHELBY-SULLIVAN-GREENE-MONROE-BROWN- BARTHOLOMEW-DECATUR-KNOX-DAVIESS-MARTIN-LAWRENCE-JACKSON-JENNINGS- 351 AM EDT THU AUG 12 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL INDIANA. .DAY ONE...TODAY AND TONIGHT. ...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 8 PM EDT FRIDAY... HEAT INDEX VALUES WILL REACH THE 105 TO 110 DEGREE RANGE TODAY AND FRIDAY AFTERNOON...AS AIR TEMPERATURES RISE INTO THE MID TO UPPER 90S. THE HEAT INDEX WILL ONLY FALL INTO THE MID TO UPPER 70S DURING THE OVERNIGHT HOURS. THERE IS A SLIGHT CHANCE OF THUNDERSTORMS TODAY. THESE STORMS ARE NOT EXPECTED TO BE SEVERE...HOWEVER LIGHTNING IS A HAZARD IN ANY THUNDERSTORM. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY. ...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 8 PM EDT FRIDAY... HEAT INDEX VALUES OF 105 TO 110 WILL OCCUR FRIDAY AFTERNOON. HEAT INDEX READINGS IN EXCESS OF 100 DEGREES ARE ALSO LIKELY SATURDAY AFTERNOON. THUNDERSTORMS ARE POSSIBLE FRIDAY NIGHT THROUGH THIS WEEKEND. IT IS TOO SOON TO DETERMINE IF THE STORMS WILL BE SEVERE...HOWEVER LIGHTNING IS A THREAT FROM ANY THUNDERSTORM. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. && MORE INFORMATION...ALONG WITH OTHER WEATHER...HYDROLOGICAL AND CLIMATE INFORMATION CAN BE FOUND...AT HTTP://WEATHER.GOV/IND (ALL LOWERCASE) SMFLECHT
The Evansville,IN radar (KVWX), 50 km away, was scanning. The volume nearest the first event began at 20:38 UTC.
1 funnel cloud, 1 lightning. Local standard time, as filed.
There were multiple reports of a funnel cloud by law enforcement and trained weather spotters.
The Vincennes Sun Commercial reported a 30 year old cedar tree being struck by lightning on Franklin Street on the east side of Vincennes.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Indiana in 2010Every state in 2010This day in weather historyWarnings in Indiana, 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: 259035, 259053.