A collapsing, isolated air mass thunderstorm produced a wind damage report during the evening of July 4th near the Shelbyville area.
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 collapsing, isolated air mass thunderstorm produced a wind damage report during the evening of July 4th near the Shelbyville area.
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 Jul 4, 7:25 PM EST, 50 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE INDIANAPOLIS IN 825 PM EDT WED JUL 4 2012 .UPDATE... THE NEAR TERM SECTION HAS BEEN UPDATED BELOW. && .SYNOPSIS... ISSUED AT 238 PM EDT WED JUL 4 2012 HIGH PRESSURE WILL GENERALLY BE IN CONTROL THROUGH FRIDAY. A FRONTAL SYSTEM IS EXPECTED TO DROP SLOWLY SOUTH THROUGH THE AREA OVER THE WEEKEND AND INTO EARLY NEXT WEEK. HIGH PRESSURE WILL BUILD ACROSS THE GREAT LAKES IN THE WAKE OF THE FRONTAL PASSAGE. && .NEAR TERM /TONIGHT/... ISSUED AT 825 PM EDT WED JUL 4 2012 PULLED THE THUNDERSTORM CHANCES ACROSS THE SOUTH PER RADAR TRENDS. OTHERWISE...EXPECTING A DRY NIGHT UNDER SURFACE AND UPPER RIDGE. PROGGED LOW LEVEL THICKNESSES GENERALLY SUPPORT THE GFS MOS LOWS TONIGHT. && .SHORT TERM /THURSDAY THROUGH SATURDAY/... ISSUED AT 238 PM EDT WED JUL 4 2012 MODEL DATA INDICATE WEAK HEIGHT RISES OVER THE NEXT COUPLE OF DAYS AS HEAT RIDGE..CURRENTLY CENTERED OVER MISSOURI...EXPANDS INTO THE OHIO VALLEY. THIS EXPANSION APPEARS TO BE TEMPORARY...AS THE RIDGE BEGINS TO FLATTEN OUT BY THE WEEKEND IN RESPONSE TO A SIGNIFICANT SYSTEM CROSSING CANADA. MODEL DATA SUGGEST AIR MASS WILL BE CAPPED OFF FOR THE MOST PART AS HEIGHTS RISE A BIT. APPEARS POTENTIAL MCS TRACKS WILL REMAIN NORTH AND EAST OF THE LOCAL AREA...BUT IT WON/T BE TOO FAR AWAY. ALTHOUGH CAN/T RULE OUT ISOLATED CONVECTION NEAR PEAK HEATING OR AN ERRANT MCS DROPPING INTO THE AREA OVER THE NEXT FEW DAYS...NEITHER OF THESE POSSIBILITIES IS WORTH A MENTION IN THE FORECAST AT THIS TIME. THINK THE BEST CHANCES OF PRECIPITATION DURING THIS PERIOD WILL BE ON SATURDAY AFTERNOON/NIGHT AS A COLD FRONT ASSOCIATED WITH THE CANADIAN SYSTEM BEGINS SAGGING INTO THE AREA. WILL GO WITH A DRY FORECAST THROUGH FRIDAY...AND GO WITH SMALL CHANCE POPS IN THE NORTHWEST FOR SATURDAY AFTERNOON...AND OVER MOST OF THE AREA SATURDAY NIGHT. PROGGED THICKNESSES DON/T CHANGE VERY MUCH OVER THE NEXT FEW DAYS...ALTHOUGH LESS DIURNAL CLOUD COVER THURSDAY AND FRIDAY MAY RESULT IN HIGHS A LITTLE WARMER THAN TODAY. WILL GO WITH HIGHS GENERALLY IN THE 100 TO 105 RANGE THROUGH THE PERIOD...WHICH IS ABOUT 5-8 DEGREES ABOVE THE GFS MOS. THE GFS MOS LOWS LOOK REASONABLE AT THIS TIME. HEAT HEADLINES WILL CONTINUE AS IS. && .LONG TERM /SATURDAY NIGHT THROUGH WEDNESDAY/... ISSUED AT 300 PM EDT WED JUL 4 2012 BIG STORY IN THE EXTENDED PERIOD WILL BE A CHANGE IN THE PATTERN THAT WILL FINALLY BRING A WELL DESERVED BREAK TO THE HEAT WAVE OF THE LAST WEEK. LARGE UPPER LOW OVER THE CANADIAN MARITIMES WILL AMPLIFY INTO EARLY NEXT WEEK PROMPTING A LOWERING OF MID LEVEL HEIGHTS. THIS WILL ALSO FORCE THE UPPER RIDGE WHICH HAS DOMINATED THE WEATHER OVER THE MIDWEST TO RETROGRADE ALL THE WAY INTO THE INTERMOUNTAIN WEST. FLATTENING OF THE RIDGE OVER THE WEEKEND WILL ENABLE A COLD FRONT TO SLOWLY PROGRESS SOUTH THROUGH THE REGION THROUGH MONDAY...BRINGING POTENTIAL FOR THUNDERSTORMS TO ALL OF CENTRAL INDIANA. OP GFS APPEARS TO BE TOO PROGRESSIVE AT THIS POINT IN SENDING THE FRONT THROUGH THE OHIO VALLEY. PREFER THE SLOWER ECMWF AND GGEM WHICH WOULD SUGGEST POTENTIAL FOR SCATTERED THUNDERSTORMS SUNDAY AND MONDAY BEFORE BOUNDARY PULLS FAR ENOUGH AWAY TO THE SOUTH. BROAD HIGH PRESSURE WILL EXPAND INTO THE REGION BEHIND THE FRONT WITH DRIER AND COOLER AIR FOR NEXT TUESDAY/WEDNESDAY. HIGH TEMPS IN THE 90S ON SUNDAY WILL FALL BACK INTO THE MID AND UPPER 80S FOR THE REMAINDER OF THE PERIOD. LOWS WILL DROP BACK INTO THE 60S. && .AVIATION /DISCUSSION FOR THE 05/00Z TAFS/... ISSUED AT 649 PM EDT WED JUL 4 2012 VFR THROUGH THE PERIOD. LARGE DOME OF HIGH PRESSURE REMAINS IN PLACE ACROSS THE REGION. ISOLATED THUNDERSTORMS DID MANAGE TO FORM SOUTH OF THE SITES THIS AFTERNOON...BUT HAVE AND WILL NOT IMPACT THEM. FEW CU EXPECTED TOMORROW AS CONVECTIVE TEMPS ARE EVEN HIGHER...ANYTHING THAT DOES FORM WILL BE HIGH BASED. WINDS WILL GENERALLY REMAIN FROM 260 TO 290 DEGREES...AT OR BELOW 10KT. WINDS OVERNIGHT WILL BE LIGHT AND VARIABLE OR EVEN CALM AT TIMES. GUIDANCE SUGGESTS SOME POSSIBILITY OF MVFR VISIBILITIES NEAR DAYBREAK THURSDAY...BUT RECENT TRENDS SUGGEST THIS MAY BE OVERBLOWN. CANNOT ENTIRELY RULE OUT BRIEF DROPS INTO MVFR TERRITORY...BUT DO NOT EXPECT SIGNIFICANT RESTRICTIONS. && .IND WATCHES/WARNINGS/ADVISORIES... EXCESSIVE HEAT WARNING UNTIL 8 PM EDT SATURDAY FOR INZ021-028>031-035>049-051>057-060>065-067>072. && SYNOPSIS...JAS NEAR TERM...JAS/MK SHORT TERM...JAS LONG TERM....RYAN AVIATION...NIELD
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE INDIANAPOLIS IN 823 PM EDT WED JUL 4 2012 INZ021-028>031-035>049-051>057-060>065-067>072-051000- CARROLL-WARREN-TIPPECANOE-CLINTON-HOWARD-FOUNTAIN-MONTGOMERY- BOONE-TIPTON-HAMILTON-MADISON-DELAWARE-RANDOLPH-VERMILLION-PARKE- PUTNAM-HENDRICKS-MARION-HANCOCK-HENRY-VIGO-CLAY-OWEN-MORGAN- JOHNSON-SHELBY-RUSH-SULLIVAN-GREENE-MONROE-BROWN-BARTHOLOMEW- DECATUR-KNOX-DAVIESS-MARTIN-LAWRENCE-JACKSON-JENNINGS- 823 PM EDT WED JUL 4 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL INDIANA. .DAY ONE...TONIGHT. OUTLOOK: HOT TEMPERATURES. HAZARDS: HEAT INDEX VALUES 100 OR MORE. TIMING: UNTIL 9 PM EDT. DISCUSSION: TEMPERATURES WILL BE AT LEAST IN THE IN 90S THROUGH 9 PM EDT AND WILL STILL BE IN THE 80S AT MIDNIGHT. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. OUTLOOK: HOT CONDITIONS WILL PERSIST THROUGH SATURDAY WITH AFTERNOON HEAT INDEX VALUES GENERALLY IN THE 105 TO 110 DEGREE RANGE. THUNDERSTORMS ARE POSSIBLE ACROSS PARTS OF THE AREA FROM SATURDAY NIGHT THROUGH LATE MONDAY. WIDESPREAD SEVERE WEATHER IS NOT EXPECTED AT THIS TIME. DISCUSSION: A COLD FRONT WILL BRING A CHANCE FOR THUNDERSTORMS THIS WEEKEND INTO EARLY NEXT WEEK. .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) KOCH
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
911 PM EDT WED JUL 4 2012
INZ056-064-050200-
BARTHOLOMEW-SHELBY-
911 PM EDT WED JUL 4 2012
...STRONG THUNDERSTORM ADVISORY FOR NORTHEASTERN BARTHOLOMEW AND
SOUTHERN SHELBY COUNTIES UNTIL 1000 PM EDT...
AT 910 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR SHELBYVILLE...MOVING SOUTH AT 10 MPH.
HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN.
LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
GENEVA...
FLAT ROCK...
HOPE...
HARTSVILLE...
CLIFFORD...
IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.
TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.
&&
LAT...LON 3935 8569 3926 8569 3926 8588 3951 8588
3953 8574 3939 8567 3935 8568
TIME...MOT...LOC 0111Z 345DEG 8KT 3945 8580
NIELDThe Indianapolis radar (KIND), 49 km away, was scanning. The volume nearest the first event began at 01:14 UTC.
1 thunderstorm wind. Local standard time, as filed.
Trees were downed and blocking a road in this location due to damaging thunderstorm wind gusts.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Indiana in 2012Every state in 2012This day in weather historyWarnings in Indiana, July 2012
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: 405633.