During the early overnight hours of June 30th a series of storms moved through central Indiana causing sporadic wind damage. The most notable damage of the event occurred across Decatur county with widespread tree damage and an isolated area with over 250 downed trees.
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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.
During the early overnight hours of June 30th a series of storms moved through central Indiana causing sporadic wind damage. The most notable damage of the event occurred across Decatur county with widespread tree damage and an isolated area with over 250 downed trees. This event continued into July 1st.
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 30, 8:20 PM EST, 1 hour 25 minutes earlier.
Area Forecast Discussion...UPDATED National Weather Service Indianapolis IN 920 PM EDT Fri Jun 30 2023 .Mesoscale Update... Issued at 920 PM EDT Fri Jun 30 2023 Isolated convection has formed west of Crawfordsville at the leading edge of weak warm advection and strengthening low-level jet. Continued strengthening and eastward expansion of low level jet and associated moisture advection may cause an increase in convective cells over the next few hours across a broader section of central Indiana. We are also monitoring upstream convection in Illinois and Missouri early this evening for possible upscale growth. The cell east of Saint Louis has exhibited steady cooling/expanding cloud tops on IR band, with a small-scale RIJ structure. It may tend to merge with expanding convection to its southeast and downshear propagation should keep this potentially evolving cluster/MCS south of our area. We will watch this evolution closely, particularly new convection on the northern edge of aforemention cell's wake cold pool, near St Louis. A more likely scenario is that convection of at least a scattered nature should continue to expand later tonight as most models show strengthening low level jet and lower tropospheric theta-e advection into roughly the southern half of Indiana. Since this is occurring beneath modestly steep midlevel lapse rates, moderate instability for elevated parcels should develop across much of the area over the next several hours. The most intense convection may tend outpace the eastward moving instability axis, and/or exhibit predominately upshear propagation (into veered low-level jet) somewhat restricting northeastward advancement. This could result in some training of heavy-rain producing convective cells, which is a concern especially for portions of the area that experienced heavy rainfall amounts recently. CREST soil saturation indicates greatest values across portions of Daviess and Knox counties. However, 3-hour flash flood guidance has risen to about 2.5" in the most recent update. This is above HREF mean, but near HREF probability match mean and maximum values centered to the south. So, heavy rain-producing/training convection evolves slightly north over the area, flash flooding is possible given the modeled potential rainfall amounts. This will need to be monitored carefully later tonight. Otherwise, primary convective hazard would be hail, though effective shear values above stable frontal inversion may be only marginally supportive of organized individual cells. Furthermore, storm-scale interactions given numerousity of convection may temper large hail potential as well. Wind threat would be dependent on 1. elevated supercell evolution, 2. establishment of a stronger cold pool, but is generally low probability at this time. && .Forecast Update... Issued at 721 PM EDT Fri Jun 30 2023 Quick update was sent an hour or so ago to remove precipitation through the evening. Subsidence in the wake of remnant MCS/mesohigh, divergent lower tropospheric wind field, and still relatively low- theta-e environment across central Indiana will preclude thunderstorms until warm/moist advection nudges into the area later tonight potentially resulting in elevated convection. Updated details on that potential will be sent later. && .Short Term...(This evening through Saturday) Issued at 214 PM EDT Fri Jun 30 2023 * Scattered convection this afternoon * Scattered to perhaps numerous convection tonight, some possibly strong to severe * Severe storms possible Saturday afternoon Rest of this afternoon... Mid level jet is aiding an area of showers and thunderstorms across central Illinois this afternoon. Relatively limited instability is keeping them in check. These will push east southeast across central Indiana mid to late afternoon. Instability is similar or a bit weaker here, so severe threat should continue to be low with these. Otherwise hot and humid conditions will persist. This evening... Focus will then shift to a boundary back across Missouri and southern Illinois. Convection will develop near this boundary and then move to the east. Uncertainty remains on where these will develop and this will have an impact on PoPs across the local area. Will have no higher than chance PoPs this evening, with the highest PoPs across the southwest forecast area closer to the boundary. Instability will be high enough that some severe storms will be possible, mainly across the southwest where instability will be highest. Overnight... Uncertainty remains high on how convection will then play out overnight. CAMs differ on whether an MCS will move across or convection will remain more scattered. Some upper energy moving around the upper ridge may add more forcing which would sustain/expand the evening convection. With low confidence, will go with high chance or low likely category PoPs overnight. A strong storm remains possible, but storms are expected to become more elevated which would limit the wind threat some. Locally heavy rain will remain a threat with any storm. Saturday... Convection will likely be ongoing still at the start of Saturday, but this will weaken and move east during the morning. A lull is then expected late morning through mid afternoon. A mid level trough will work with impressive CAPE and generate an MCS to the west and south of central Indiana Saturday afternoon. This will then propagate into the area late in the afternoon and continue into Saturday night. There remains timing questions with this area of storms, so will continue to monitor trends closely. Conditions are favorable for damaging winds (high DCAPE values) as the primary threat with these storms, but hail and perhaps a tornado cannot be ruled out. Heavy rain will be a threat with any storm throughout Saturday. Given the expected lull in convection, temperatures should be able to rebound into the upper 80s to lower 90s. && .Long Term...(Saturday night through Friday) Issued at 214 PM EDT Fri Jun 30 2023 Saturday Night Through Sunday. Much of the focus in the long term period will be on another round of storms for the weekend Saturday night and first frontal passage of the week on Sunday. As of now, confidence in thunderstorm chances is highest during the early overnight hours, but much of this will be dependent on how things evolve over the next 24 hours. Confidence is higher that after midnight conditions should begin to calm with another night of lows near 70. The severe threat looks fairly low during the overnight hours, but damaging wind gusts during the late evening certainly look possible with any ongoing MCS. A cold front is expected to pass through the area during the daytime hours on Sunday with scattered to numerous thunderstorms expected during the afternoon and evening hours. Confidence in storm mode remains fairly uncertain but the hodograph looks relatively straight which should eventually allow discrete cells to congeal into a somewhat organized line. The better shear remains to the south of the forecast area along the Ohio River which is where confidence is higher in damaging wind gusts. The front is currently expected to pass through during the late evening hours which will usher in a brief pattern shift before storm chances ramp back up later in the week. Monday Through Friday. The pattern will shift but remain messy through the early portions of the week with the upper level jet much weaker and thunderstorm chances being driven more by diurnal heating. Convective temperatures look to be reached Monday but a weak cap above the boundary layer will limit rain coverage but create a fairly widespread cu field with similar conditions expected for Tuesday. It remains a bit too early to have a lot of confidence in the forecast for the evening hours on Tuesday, but the pattern favors low rain chances with only very spotty thunderstorms that should wrap up by any late evening holiday activities. The next frontal system then begins to near the area late Wednesday into Thursday with more organized convection likely, but the most significant and widespread precipitation looks to occur over the Plains. After the frontal passage, quieter weather then looks to set up for the weekend but may begin as early as Friday depending on the final timing of the front. Highs through next week will generally remain seasonable but will vary from the low to upper 80s. && .Aviation...(00Z TAF Issuance) Issued at 721 PM EDT Fri Jun 30 2023 Impacts: * Low probability of thunderstorms late tonight through early tomorrow; additional thunderstorm chances toward the end of the TAF period. * Periods of variable winds but generally southeasterly trending southwesterly. Discussion: Forecast confidence is below average due to weak mesoscale forcing driving wind direction and thunderstorm chances. Showers and thunderstorms can't be ruled out at any period except the first 6 hours of the TAF. Thereafter, warm moist advection may cause some thunderstorms late tonight through early tomorrow. A lull may occur, followed by a thunderstorm complex late in the day toward the end of the TAF period. MVFR or lower conditions are not expected except briefly within showers and thunderstorm, if and when they occur. Expect amendments. && .IND WATCHES/WARNINGS/ADVISORIES... None. && Mesoscale...BRB Update...BRB Short Term...50 Long Term...White Aviation...BRB
Hazardous Weather Outlook...UPDATED National Weather Service Indianapolis IN 734 PM EDT Fri Jun 30 2023 INZ021-028>031-035>049-051>057-060>065-067>072-012345- 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, Union City, Farmland, Parker City, Clinton, Fairview Park, Rockville, Montezuma, Rosedale, Greencastle, Plainfield, Brownsburg, Danville, Indianapolis, Greenfield, New Castle, Terre Haute, Brazil, Spencer, Gosport, Martinsville, Mooresville, Greenwood, Franklin, Shelbyville, Rushville, Sullivan, Carlisle, Shelburn, Farmersburg, Linton, Bloomfield, Jasonville, Worthington, Bloomington, Nashville, Columbus, Greensburg, Vincennes, Washington, Loogootee, Shoals, Bedford, Mitchell, Seymour, and North Vernon 734 PM EDT Fri Jun 30 2023 This hazardous weather outlook is for central Indiana. .DAY ONE...Tonight. Thunderstorms are expected to increase late tonight. A few severe thunderstorms are possible with marginally severe hail up to quarter size. Lightning will be a hazard as well. Heavy rainfall could lead to localized flash flooding. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Thunderstorms will be possible at times this weekend into early next week. Additional chances for storms will return by Wednesday and Thursday. An increased risk for severe weather will come Saturday and Saturday night. Damaging winds and large hail are the primary threat...but a few tornadoes will also be possible. Flash flooding will remain a concern with repeated rounds of storms. .SPOTTER INFORMATION STATEMENT... Spotter reports will be helpful and appreciated through the weekend. && 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 1023 PM EDT Fri Jun 30 2023 INZ046-047-010245- Hendricks IN-Marion IN- 1023 PM EDT Fri Jun 30 2023 ...A strong thunderstorm will impact portions of northeastern Hendricks and southwestern Marion Counties through 1045 PM EDT... At 1022 PM EDT, Doppler radar was tracking a strong thunderstorm over Brownsburg, or 12 miles west of Indianapolis, moving southeast at 40 mph. HAZARD...Penny size hail. SOURCE...Radar indicated. This strong thunderstorm will be near... Speedway around 1030 PM EDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... If outdoors, consider seeking shelter inside a building. && LAT...LON 3983 8646 3990 8639 3978 8607 3967 8622 TIME...MOT...LOC 0222Z 300DEG 33KT 3984 8636 MAX HAIL SIZE...0.75 IN MAX WIND GUST...<30 MPH BRB
Special Weather Statement
National Weather Service Indianapolis IN
1037 PM EDT Fri Jun 30 2023
INZ045-046-010300-
Putnam IN-Hendricks IN-
1037 PM EDT Fri Jun 30 2023
...A strong thunderstorm will impact portions of southwestern
Hendricks and east central Putnam Counties through 1100 PM EDT...
At 1036 PM EDT, Doppler radar was tracking a strong thunderstorm 7
miles northeast of Greencastle, or 25 miles south of Crawfordsville,
moving east at 25 mph.
HAZARD...Up to dime size hail.
SOURCE...Radar indicated.
This storm will remain over mainly rural areas of southwestern
Hendricks and east central Putnam Counties, including the following
locations... Stilesville, Coatesville, Fillmore, Amo and Clayton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3974 8675 3970 8644 3960 8651 3960 8655
3967 8678
TIME...MOT...LOC 0236Z 286DEG 21KT 3970 8672
MAX HAIL SIZE...0.50 IN
MAX WIND GUST...<30 MPH
BRBThe Indianapolis radar (KIND), 13 km away, was scanning. The volume nearest the first event began at 02:43 UTC.
4 thunderstorm wind, 1 hail. Local standard time, as filed.
A localized area of stronger thunderstorm winds damaged trees, a chimney, and a car wash northwest of downtown Indianapolis.
Multiple trees downed by thunderstorm winds near a shed.
Several trees downed by thunderstorm wind gusts within Adams.
Half mile wide swath of trees downed by thunderstorm wind gusts. Estimated 200-250 total trees.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Indiana in 2023Every state in 2023This day in weather historyWarnings in Indiana, June 2023
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: 1098559, 1098560, 1098561, 1100981, 1100982.