A Line of thunderstorms stretched from southern Illinois to southwest Arkansas before pushing northeast into west-central and southwest Indiana during the early morning hours of the 1st of May. A few high wind and severe wind reports were received in west-central Indiana and pea sized hail was also observed in Terre Haute.
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.
A Line of thunderstorms stretched from southern Illinois to southwest Arkansas before pushing northeast into west-central and southwest Indiana during the early morning hours of the 1st of May. A few high wind and severe wind reports were received in west-central Indiana and pea sized hail was also observed in Terre Haute.
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 Apr 30, 11:30 PM EST, 1 hour 50 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE INDIANAPOLIS IN 1230 AM EDT SAT MAY 1 2010 .UPDATE...FORECAST LOOKING GOOD REGARDING THE TIMING OF THUNDERSTORMS ACROSS CENTRAL INDIANA OVERNIGHT...SO WILL NOT MAKE ANY CHANGES. THE HRRR RADID REFRESH LOOKS A TAD FAST COMPARED TO THE CURRENT RADAR LOOP WAS HAS THE STORMS STILL WELL TO THE WEST FROM AROUND CHICAGO TO JUST EAST OF ST. LOUIS. EXPECT THE STORMS TO APPROACH LAFAYETTE AROUND 1 AM EDT AND THE METRO AREA AROUND 4 AM. WILL ALSO UPDATE FLASH FLOOD WATCH WITH NO CHANGES WITH 00Z MODEL DATA NOT IN YET. && .SYNOPSIS... A COLD FRONT WILL MOVE INTO CENTRAL INDIANA TONIGHT...EVENTUALLY STALLING NEAR THE OHIO RIVER ON SATURDAY. THE FRONT WILL BE THE FOCUS FOR SHOWERS AND THUNDERSTORMS TONIGHT CONTINUING INTO SATURDAY. ADDITIONAL SHOWERS AND THUNDERSTORMS WILL ARRIVE AS THE BOUNDARY MOVES BACK NORTH SATURDAY NIGHT AND SUNDAY. STRONG TO SEVERE THUNDERSTORMS WITH HEAVY RAINFALL WILL BE POSSIBLE THROUGHOUT THE WEEKEND. && .SHORT TERM.../TONIGHT THROUGH SUNDAY NIGHT/. RAPID INFLUX OF LOW LEVEL MOISTURE AHEAD OF THE APPROACHING FRONT BOUNDARY HAD BROUGHT A FAIR AMOUNT OF LOWER CLOUDS INTO THE FORECAST AREA THIS AFTERNOON. THIS HAD HELD TEMPERATURES AND WIND GUSTS DOWN TO SOME DEGREE...WITH CURRENT TEMPS GENERALLY IN THE LOWER AND MIDDLE 70S. FORECAST CHALLENGES FOCUS ON POTENTIAL FOR HEAVY RAINFALL AND STRONG TO SEVERE STORMS WITH FRONTAL BOUNDARY IN THE REGION FOR MUCH OF THE WEEKEND. MOST OF THE MODEL GUIDANCE IN FAIRLY GOOD AGREEMENT THROUGH THE WEEKEND...BUT HAVE LEANED TOWARDS GFS ENSEMBLES/SREF/ECMWF WITH RESPECT TO LOCATION OF THE FRONT AND RESPECTIVE TRACK OF THE LOW PRESSURE WAVES MOVING ALONG IT. WHILE CURRENT VIS SATELLITE IMAGERY WOULD INDICATE POTENTIAL FOR A FEW ADDITIONAL BREAKS IN THE CLOUDS THIS AFTERNOON...LIKELY TO REMAIN MOSTLY CLOUDY WEST OF I-65 INTO THE EVENING. MONITORING THE RAPIDLY DEVELOPING CONVECTION OVER THE MID/UPPER MISSISSIPPI VALLEYS THIS AFTERNOON AS WELL. EXTRAPOLATION AND WRF/SREF ANALYSIS TRACKING BULK OF THE CURRENT ACTIVITY TO THE NORTHWEST OF THE FORECAST AREA THROUGH 00Z. CONVECTION SHOULD BECOME BETTER ORGANIZED TO THE SOUTHWEST OF THE REGION THIS EVENING AS LOW LEVEL JET STRENGTHENS. THE JET WILL ROTATE ACROSS THE FORECAST AREA AFTER 06Z WITH DEEP CONVERGENCE AXIS THROUGH 700MB DEVELOPING THROUGH SATURDAY MORNING. HAVE INTRODUCED CHANCE POPS IN THE WEST AFTER 00Z...SPREADING EAST OF I-65 AFTER 06Z AS THE STRONG LOW LEVEL CONVERGENCE COMBINES WITH ZONE OF UPPER DIFFLUENCE AS SPLIT JET FLOW DEVELOPS. POTENTIAL FOR A FEW STRONG TO SEVERE STORMS REMAINS POSSIBLE LATE TONIGHT AS BL SHEAR VALUES REMAIN FAVORABLE AND DEEP LOW LEVEL MOISTURE PUMPS INTO THE OHIO VALLEY. AVAILABLE INSTABILITY REMAINS A BIG QUESTION MARK...WITH LESS THAN 1000 J/KG ANTICIPATED DURING THE EARLY MORNING HOURS. WILL CONTINUE TO HIGHLIGHT THREAT IN THE HWO. CONVECTION LIKELY TO BE HEAVIEST LATE TONIGHT AND EARLY SATURDAY SOUTH OF I-70...AND HAVE PLACED HIGHEST POPS IN THESE AREAS. 0.50-1 INCH VERY LIKELY OVER MUCH OF THE FORECAST AREA THROUGH MIDDAY SATURDAY WITH LOCALLY HIGHER AMOUNTS OVER SOUTHERN COUNTIES. MUCH OF THE FORECAST AREA SHOULD GET A BREAK THROUGH THE AFTERNOON SATURDAY AS THE BOUNDARY SETTLES NEAR THE OHIO RIVER AND DRIER AIR ALOFT BRIEFLY FILTERS ACROSS THE REGION. FOCUS THEN SHIFTS TO SECONDARY WAVE OF LOW PRESSURE LIFTING OUT OF THE LOWER MISSISSIPPI VALLEY SATURDAY NIGHT. MODEL CONSENSUS HAS SHIFTED THE TRACK OF THE LOW FURTHER NORTH AND WEST SATURDAY NIGHT...WITH WIDESPREAD HEAVY RAINFALL IMPACTING THE ENTIRE FORECAST AREA. CONCERNS FOR EXCESSIVE RAINFALL CONTINUE ACROSS SOUTHERN HALF OF THE FORECAST AREA WHERE COMBINATION OF 60+KT LOW LEVEL JET...PWATS IN EXCESS OF 2 INCHES AND DEEP LOW LEVEL CONVERGENCE AXIS WILL CONTRIBUTE TO PERSISTENT HEAVY CONVECTION FOR MUCH OF THE NIGHT INTO SUNDAY MORNING. WITH ADDITIONAL QPF VALUES OF 1 TO 3 INCHES POSSIBLE OVER SOUTHERN COUNTIES...WILL BE HOISTING A FLASH FLOOD WATCH SOUTH OF I-70 FROM SATURDAY EVENING TO SUNDAY EVENING. WHILE MODEL GUIDANCE DIFFERS TO SOME DEGREE WITH REGARDS TO TRACK AND STRENGTH OF THE SECOND WAVE...GREATEST CONCERN FOR WATER PROBLEMS SOUTH OF INDY METRO. COMBINATION OF IDEAL BL SHEAR VALUES AND IMPRESSIVE DYNAMICS WARRANTS A CONTINUED MENTION OF ISOLATED SEVERE STORMS AS THE WAVE MOVES THROUGH SATURDAY NIGHT AND SUNDAY DESPITE QUESTION MARKS WITH INSTABILITY AVAILABLE ONCE AGAIN. FRONT WILL SLOWLY SHIFT EAST SUNDAY AFTERNOON AND EVENING WITH PRECIPITATION COMING TO AN END. TEMPS...NEAR MAVMOS GUIDANCE THROUGH MUCH OF THE WEEKEND ON TEMPS AS IT LOOKED REASONABLE. TRENDED TOWARDS THE WARMER MET GUID SUNDAY NIGHT AS GFS APPEARS TO BRING COOLER DRIER AIRMASS IN TOO QUICKLY. && .LONG TERM.../MONDAY THROUGH FRIDAY/. RELATIVELY DRY CONDITIONS AND ABOVE NORMAL TEMPERATURES CHARACTERIZED THE EXTENDED PORTION OF THE FORECAST...AS DECENT AGREEMENT BETWEEN MODEL SOLUTIONS EXISTS WELL INTO MID-WEEK. THE EXTENDED FORECAST TRENDED MORE TOWARDS THE ECMWF...WHICH IS ALSO THE MODEL HPC STRONGLY FAVORED. BY THE BEGINNING OF THE PERIOD...OUR FORECAST AREA IS POST-FRONTAL. WEAK RIDGING ALOFT BEGINS TO TAKE PLACE BY MIDWEEK...AS ANOTHER UPPER LEVEL LOW BEGIN TO TAKE SHAPE OVER SOUTHERN SASKATCHEWAN AND MANITOBA. AS THIS UPPER LOW PROGRESSES EASTWARD...THE NEXT CHANCE FOR PRECIPITATION ACROSS THE FORECAST AREA ARRIVES ON THURSDAY MORNING...WITH THE LOW SENDING A FRONTAL BOUNDARY INTO THE AREA. THE 12Z GFS ALSO HAS THIS FRONT PUSHING INTO THE FORECAST AREA THURSDAY MORNING. THUS HAVE INTRODUCED SLIGHT POPS TO ACCOUNT FOR THIS POSSIBILITY. MODEL SOLUTIONS DIVERGE FROM HERE WITH THE 00Z ECMWF DIGGING A POTENT UPPER LEVEL WAVE INTO THE MID-MISSISSIPPI VALLEY TO END THE WORK WEEK...WHILE THE 12Z GFS ILLUSTRATES A MUCH WEAKER DISTURBANCE THAT EVENTUALLY GETS SWEPT ALONG THE AMBIENT FLOW. STUCK CLOSE TO HPC GUIDANCE AND WENT WITH SLIGHT CHANCE POPS TO HINT AT THE POSSIBILITY OF A LATE WEEK SYSTEM. && .AVIATION...DISCUSSION FOR 010600Z TAF ISSUANCE. LONG LINE OF CONVECTIVE CLUSTERS EXTENDS FROM THE GREAT LAKES SOUTHWESTWARD INTO ARKANSAS. BREAKS IN THE LINE ARE BECOMING MORE NUMEROUS OVER THE NORTHERN SECTIONS...BUT MODERATE AMOUNTS OF INSTABILITY FOR THIS TIME OF DAY REMAIN AHEAD OF THE LINE...SO EXPECTING LINE TO HOLD TOGETHER FOR THE MOST PART OVERNIGHT...AIDED BY A STRONG LOW LEVEL JET. APPEARS MAIN CONVECTIVE THREAT OVER THE TERMINALS WILL BE THROUGH ABOUT 011100Z. BRIEF IFR VISIBILITY RESTRICTIONS PROBABLE IN THE HEAVIER CELLS. 010000Z UPPER AIR AND PROFILER DATA SUGGEST 50-60KT LOW LEVEL JET ACROSS THE AREA AT 040-050. BOUNDARY LAYER SHOULD REMAIN AT PARTIALLY MIXED OVERNIGHT WITH CONVECTION AROUND...SO DON/T THINK WIND SHEAR WILL MEET CRITERIA FOR INCLUSION IN THE FORECAST. LOW LEVEL JET EXPECTED TO WEAKEN AFTER PASSAGE OF CONVECTIVE LINE. && .IND WATCHES/WARNINGS/ADVISORIES... FLASH FLOOD WATCH FROM SATURDAY EVENING THROUGH SUNDAY EVENING FOR INZ051>057-060>065-067>072. && UPDATE...KOCH SYNOPSIS...RYAN SHORT TERM...RYAN LONG TERM...MRD/RYAN AVIATION...JAS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE INDIANAPOLIS IN 344 PM EDT FRI APR 30 2010 INZ051>057-060>065-067>072-011000- VIGO-CLAY-OWEN-MORGAN-JOHNSON-SHELBY-RUSH-SULLIVAN-GREENE-MONROE- BROWN-BARTHOLOMEW-DECATUR-KNOX-DAVIESS-MARTIN-LAWRENCE-JACKSON- JENNINGS- 344 PM EDT FRI APR 30 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL INDIANA. .DAY ONE...THIS AFTERNOON AND TONIGHT. THUNDERSTORMS WILL MOVE INTO CENTRAL INDIANA TONIGHT. SEVERE STORMS ARE NOT EXPECTED AT THIS TIME...BUT GUSTY WINDS ARE POSSIBLE WITH THE STORMS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. THUNDERSTORMS ARE POSSIBLE AT TIMES SATURDAY AND SUNDAY. SEVERE STORMS ARE POSSIBLE MAINLY SATURDAY NIGHT INTO EARLY SUNDAY. THE PRIMARY THREAT FROM THESE STORMS WILL BE DAMAGING WINDS. LIGHTNING IS A THREAT FROM ANY THUNDERSTORM. IN ADDITION...HEAVY RAINFALL AND FLASH FLOODING WILL BE POSSIBLE...ESPECIALLY SATURDAY NIGHT AND SUNDAY. 2 TO 4 INCHES WILL BE POSSIBLE FROM TONIGHT THROUGH SUNDAY EVENING WITH LOCALLY HIGHER AMOUNTS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS WEEKEND. && MORE INFORMATION...ALONG WITH OTHER WEATHER...HYDROLOGICAL AND CLIMATE INFORMATION CAN BE FOUND...AT HTTP://WEATHER.GOV/IND (ALL LOWERCASE) INZ021-028>031-035>049-011000- CARROLL-WARREN-TIPPECANOE-CLINTON-HOWARD-FOUNTAIN-MONTGOMERY- BOONE-TIPTON-HAMILTON-MADISON-DELAWARE-RANDOLPH-VERMILLION-PARKE- PUTNAM-HENDRICKS-MARION-HANCOCK-HENRY- 344 PM EDT FRI APR 30 2010 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL INDIANA. .DAY ONE...THIS AFTERNOON AND TONIGHT. THUNDERSTORMS WILL MOVE INTO CENTRAL INDIANA TONIGHT. SEVERE STORMS ARE NOT EXPECTED AT THIS TIME...BUT GUSTY WINDS ARE POSSIBLE WITH THE STORMS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY. THUNDERSTORMS ARE POSSIBLE AT TIMES SATURDAY AND SUNDAY. SEVERE STORMS ARE POSSIBLE MAINLY SATURDAY NIGHT INTO EARLY SUNDAY. THE PRIMARY THREAT FROM THESE STORMS WILL BE DAMAGING WINDS. LIGHTNING IS A THREAT FROM ANY THUNDERSTORM. IN ADDITION...HEAVY RAINFALL AND LOCALIZED FLOODING WILL BE POSSIBLE...ESPECIALLY SATURDAY NIGHT AND SUNDAY. 1 TO 3 INCHES WILL BE POSSIBLE FROM TONIGHT THROUGH SUNDAY EVENING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED THIS WEEKEND. && MORE INFORMATION...ALONG WITH OTHER WEATHER...HYDROLOGICAL AND CLIMATE INFORMATION CAN BE FOUND...AT HTTP://WEATHER.GOV/IND (ALL LOWERCASE) RYAN
The Indianapolis radar (KIND), 98 km away, was scanning. The volume nearest the first event began at 06:21 UTC.
2 thunderstorm wind. Local standard time, as filed.
A trained spotted observed pea sized hail in addition to the 65 mph wind gust reported in Terre Haute.
Trees were reported down in the southern portion of Shakamak State Park.
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, May 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: 235649, 235678.