A few thunderstorms developed during the early evening hours of June 11th. One stronger storm briefly produced a damaging wind gust in northwestern Howard County as the core of the storm began to collapse.
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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 few thunderstorms developed during the early evening hours of June 11th. One stronger storm briefly produced a damaging wind gust in northwestern Howard County as the core of the storm began to collapse. No other storm caused any damage that day.
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 Jun 11, 6:50 PM EST, 1 hour earlier.
Area Forecast Discussion National Weather Service Indianapolis IN 750 PM EDT Fri Jun 11 2021 ...Updated Aviation Discussion... .Short Term...(This evening through Saturday night) Issued at 314 PM EDT Fri Jun 11 2021 This Evening...scattered showers with embedded isolated thunderstorms have been popping up over central Indiana over the last few hours in the prime heating of the day. Since these storms are diurnally driven and don't have much shear and limited forcing, they will taper off after sunset. The best chances for convective activity will be over the southeast quadrant where forcing is best from a lingering upper low. Tonight...will trend toward a dry forecast with weak ridging aloft. In addition, cannot rule out some patchy radiational fog with the clear skies and calm winds, but confidence is not high enough to include mention at this time. Overnight lows are progged to be in the upper 60s/low 70s with dew points still in the upper 60s/low 70s. Saturday...will be much of the same. Diurnally driven convection will form during the afternoon hours with some additional support from a weak surface front. Afternoon CAPE values will max out around 2000 J/kg with lapse rates in the 5 to 7 C/km range. Meanwhile, it will be another hot and muggy day with highs climbing into the upper 80s/low 90s and dew points in the upper 60s/low 70s. Saturday Evening/Night...as subsidence increases with the upper ridge, any showers and thunderstorms that do form will quickly taper off during the evening. The muggy pattern will continue to hold with overnight lows in the upper 60s and dew points in the upper 60s. && .Long Term...(Sunday through Friday) Issued at 314 PM EDT Fri Jun 11 2021 The long term synoptic pattern will feature a Rockies ridge of high pressure and an eastern Great Lakes and northeast trough. This will set up a north and northwest flow aloft across central Indiana through the TAF period. Would not completely rule out a shower or thunderstorm over southeastern sections of the forecast area Sunday as some moisture and instability lingers there, otherwise drier air should bring plenty of sunshine but less humidity especially by the middle of the week, when the surface high approaches. As the high moves by late week, temperatures will start to rebound in southwest low level flow. The recent run of above normal temperatures and high humidity will come to an end with seasonable or slightly below normal temperatures with highs in the upper 70s and lower 80s by next Wednesday. Overnight lows will fall all the way to the 50s by Tuesday night. Normal high and low temperatures for this time of year are in the lower 80s and lower 60s. && .Aviation...(00Z TAF Issuance) Issued at 749 PM EDT Fri Jun 11 2021 IMPACTS: - Isolated to scattered showers and thunderstorms possible Saturday afternoon. - Possible MVFR visibilities early Saturday morning. DISCUSSION: A few showers and thunderstorms continue to pop up across central Indiana this evening. These are expected to end over the next couple of hours. Given their isolated nature have not included any mention in the TAFs. Weather is expected to be quiet overnight but tomorrow afternoon there is another chance of isolated to scattered showers and thunderstorms again like there was today. Timing and location is hard to pin down do have gone with VCSH until specifics become more clear. Confidence is too low at this time to include mention of fog in TAFs, but would not rule out MVFR visibilities in the Sat 09-13Z time frame. Outside of any convection and fog development, conditions will be at VFR levels. Meanwhile, winds will be variable but light. && .IND WATCHES/WARNINGS/ADVISORIES... None. && Short Term...TDUD Long Term...Koch Aviation...KH
Hazardous Weather Outlook National Weather Service Indianapolis IN 354 PM EDT Fri Jun 11 2021 INZ021-028>031-035>049-051>057-060>065-067>072-122000- 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- Including the cities of Delphi, Flora, Williamsport, West Lebanon, Lafayette, West Lafayette, Frankfort, Kokomo, Attica, Covington, Veedersburg, Crawfordsville, Lebanon, Zionsville, Tipton, Fishers, Carmel, Noblesville, Anderson, Muncie, Winchester, Clinton, Newport, Rockville, Greencastle, Plainfield, Brownsburg, Danville, Indianapolis, Greenfield, New Castle, Terre Haute, Brazil, Clay City, Spencer, Martinsville, Mooresville, Greenwood, Franklin, Shelbyville, Rushville, Sullivan, Linton, Bloomfield, Bloomington, Nashville, Columbus, Greensburg, Vincennes, Washington, Loogootee, Shoals, Bedford, Mitchell, Seymour, Brownstown, and North Vernon 354 PM EDT Fri Jun 11 2021 This hazardous weather outlook is for central Indiana. .DAY ONE...This Afternoon and Tonight. Isolated to scattered showers and thunderstorms expected through this evening with highest coverage across southeastern Indiana. Lightning and heavy rainfall leading to localized flooding will be the main threats. General storm motion will be less than 5 mph. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Isolated to scattered thunderstorms are expected Saturday with the highest chances occurring during the afternoon and early evening hours. Severe storms are not expected at this time, but an isolated stronger wind gust is possible in stronger storms. .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
Special Weather Statement
National Weather Service Indianapolis IN
443 PM EDT Fri Jun 11 2021
INZ053-061-062-112115-
Owen-Greene-Monroe-
443 PM EDT Fri Jun 11 2021
...A STRONG THUNDERSTORM WILL AFFECT WEST CENTRAL MONROE...CENTRAL
OWEN AND NORTHEASTERN GREENE COUNTIES...
At 442 PM EDT, a strong thunderstorm was located near Spencer, or 19
miles northwest of Bloomington, moving southeast at 30 mph.
Winds in excess of 30 mph and penny size hail are possible with this
storm.
Locations impacted include...
Bloomington, Spencer, Ellettsville, Stinesville, Solsberry,
McCormicks Creek State Park and Freedom.
LAT...LON 3934 8697 3934 8694 3938 8694 3945 8684
3920 8652 3904 8682
TIME...MOT...LOC 2042Z 331DEG 25KT 3933 8683
KHThe Indianapolis radar (KIND), 93 km away, was scanning. The volume nearest the first event began at 00:50 UTC.
1 thunderstorm wind. Local standard time, as filed.
A hog barn had half of it's roof blown off by thunderstorm wind gusts.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Indiana in 2021Every state in 2021This day in weather historyWarnings in Indiana, June 2021
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: 959442.