Morning scattered showers and isolated thunderstorms crossed central Indiana amid warm and moist advection atop a relatively dry and stable lower atmosphere. Weak instability prevented organized stronger storms, although winds at Indianapolis Int'l Airport did briefly reach severe magnitude.
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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.
Morning scattered showers and isolated thunderstorms crossed central Indiana amid warm and moist advection atop a relatively dry and stable lower atmosphere. Weak instability prevented organized stronger storms, although winds at Indianapolis Int'l Airport did briefly reach severe magnitude.
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 11, 9:37 AM EST, 16 minutes earlier.
Area Forecast Discussion...UPDATED National Weather Service Indianapolis IN 1037 AM EDT Mon Apr 11 2022 ...Update... .Forecast Update... Issued at 1037 AM EDT Mon Apr 11 2022 Just sent another update to refined precipitation coverage/probabilities based on radar trends. Initial push of moisture and associated wave of convection with some lightning is moving northeast across the area now. We expanded higher probabilities northward into the I-70 corridor, including Indianapolis, where rain will happen shortly. Limited instability will preclude a severe threat but cannot rule out brief pea size hail in isolated more intense cores. Also, with the dry sub-cloud layer, despite convection being rooted at around 800-mb, gusty winds may briefly occur. && .Short Term...(Today through Tuesday) Issued at 300 AM EDT Mon Apr 11 2022 Early this morning, a surface low was across Minnesota with a cold front extending into Illinois and then into Missouri. A 50kt low level jet was across the area, with isolated elevated convection across the northwest forecast area. Other scattered convection was along the cold front. The cold front will move slowly southeast across the area today. While the main shortwave aloft will remain well northwest of the area, pieces of upper energy will move through the southwest flow aloft. Weak waves will also move along the surface front. While the low level jet weakens during the day, the forcing from the aforementioned features will be enough to generate scattered to numerous areas of convection during the day today. Combining the coverage from the areas of convection through the day will lead to categorical PoPs across most of the area at some point today. Current expected evolution of the upper energy would indicate the coverage of the highest PoPs will be during the late afternoon, when forcing, heating, and instability are maximized. There remains some conditional threat for isolated severe storms across the far southwestern forecast area later this afternoon into early evening. Enough instability may develop to interact with decent shear to produce the isolated severe storms. However, questions remain on whether than instability will develop as cloud cover as well as storms to the south could inhibit that development. At 00Z this evening, the higher coverage of convection will be ongoing across mainly the southeast half of the area, so will go with high PoPs there. Convection will diminish during the evening as the cold front is pushed south and east of central Indiana. Water vapor satellite shows moisture flowing into the area with a connection to the Pacific. Precipitable water values will be over an inch today into this evening. Thus, a threat for locally heavy rain will exist with the convection. However, will have to watch and see if convection farther south robs some of the moisture for here. On Tuesday, the front will return north as a warm front, with upper flow returning to the southwest. Even though moisture returns, there isn't much forcing with the warm front. Will only go with some low PoPs during the day Tuesday. Briefly looking at temperatures, readings will top out in the 60s today with the clouds and rain around. With the front to the south tonight, lows will be able to drop back into the 40s. As the front returns north on Tuesday, and with lower coverage of rain, highs will peak in the 60s and lower 70s. && .Long Term...(Tuesday night through Sunday) Issued at 300 AM EDT Mon Apr 11 2022 Long term period will begin with the area solidly in the expansive warm sector of a large and potent low pressure system. This low will drag a cold front through the area Wednesday night, with showers and thunderstorms ahead of it and particularly along it as it passes. Environment looks to be at least modestly unstable and strongly sheared Wednesday evening into the overnight and thus a fairly significant severe threat will exist during this time, with QLCS mode and damaging winds/few tornadoes the most likely threat. There will also be a heavy rain threat, which could produce some localized flooding given expected rainfall prior, but given fairly rapid storm motions this should be limited. Temperatures will moderate significantly in the wake of the cold front and are likely to be below normal much of the remainder of the period, and blended intialization handles this well. A dry period is expected Thursday and Friday in the wake of the front, although steep low level lapse rates/deep mixing and strong low level flow Thursday may produce significant wind gusts to about 40 MPH. Rain chances will return Friday night and persist through the remainder of the period as numerous disturbances in fairly fast quasizonal or weakly cyclonic flow along a baroclinic zone in the region pass through the area. Model discrepancies further out in time preclude more than chance pops at this time. && .Aviation...(12Z TAF Issuance) Issued at 602 AM EDT Mon Apr 11 2022 IMPACTS: * MVFR conditions developing by early afternoon at most sites. * Showers becoming widespread this afternoon and continuing into the evening at most sites. * Scattered thunderstorms into the evening. * IFR or worse possible in thunderstorms. * Wind shift to northwest as a cold front passes through. DISCUSSION: A cold front will slowly make its way southeast across the sites today, pushing south of the area around 00Z. Coverage of showers and some thunderstorms will increase today as the front moves through. Widespread MVFR conditions are expected in the showers, with IFR or worse possible in and near thunderstorms. Rain will diminish by late evening with improving conditions overnight. && .IND WATCHES/WARNINGS/ADVISORIES... None. && Update...BRB/Eckhoff Short Term...50 Long Term...Nield Aviation...50
Hazardous Weather Outlook National Weather Service Indianapolis IN 357 AM EDT Mon Apr 11 2022 INZ021-028>031-035>049-051>057-062>065-071-072-120800- 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-Monroe-Brown-Bartholomew-Decatur-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, Bloomington, Nashville, Columbus, Greensburg, Seymour, and North Vernon 357 AM EDT Mon Apr 11 2022 This hazardous weather outlook is for central Indiana. .DAY ONE...Today and Tonight. Scattered thunderstorms are expected today and tonight, with most coverage of storms expected during the afternoon into the evening. Severe storms are not expected, but small hail, gusty winds, and locally heavy rainfall are possible with some storms. Lightning is a threat from any thunderstorm. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Isolated to scattered thunderstorms are expected over all or parts of the area Tuesday afternoon through Wednesday night. An isolated strong to severe thunderstorm is possible later Tuesday night. Scattered severe storms will be possible later Wednesday afternoon into Wednesday night. Damaging winds would be the primary threat with the severe storms. Any thunderstorm will be capable of producing locally heavy rain and cloud to ground lightning. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to monitor forecasts for potential activation, mainly on Wednesday. && More information, along with other weather, hydrological and climate information can be found at http://weather.gov/ind INZ060-061-067>070-120800- Sullivan-Greene-Knox-Daviess-Martin-Lawrence- Including the cities of Sullivan, Carlisle, Shelburn, Farmersburg, Linton, Bloomfield, Jasonville, Worthington, Vincennes, Washington, Loogootee, Shoals, Bedford, and Mitchell 357 AM EDT Mon Apr 11 2022 This hazardous weather outlook is for southwest sections of central Indiana. .DAY ONE...Today and Tonight. Scattered thunderstorms are expected today and tonight, with most coverage of storms expected during the afternoon into the evening. An isolated strong to severe storm is possible this afternoon into the evening, with damaging winds the primary threat. Lightning and locally heavy rain are threats from any thunderstorm. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Isolated to scattered thunderstorms are expected Tuesday afternoon through Wednesday night. An isolated strong to severe thunderstorm is possible later Tuesday night. Scattered severe storms will be possible later Wednesday afternoon into Wednesday night. Damaging winds would be the primary threat with the severe storms. Any thunderstorm will be capable of producing locally heavy rain and cloud to ground lightning. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to monitor forecasts for potential activation, mainly on Wednesday. && 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
1053 AM EDT Mon Apr 11 2022
INZ039-046>048-111515-
Hendricks IN-Hancock IN-Hamilton IN-Marion IN-
1053 AM EDT Mon Apr 11 2022
...A strong thunderstorm will impact portions of southwestern
Hancock, southeastern Hendricks, Marion and southwestern Hamilton
Counties through 1115 AM EDT...
At 1052 AM EDT, Doppler radar was tracking a strong thunderstorm over
Plainfield, or 11 miles southwest of Indianapolis, moving northeast
at 40 mph.
HAZARD...Wind gusts up to 50 mph and pea size hail. A 49 mph wind
gust occurred at Indianapolis airport.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
This strong thunderstorm will be near...
Speedway and Southport around 1105 AM EDT.
Beech Grove around 1110 AM EDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3992 8592 3970 8590 3970 8595 3964 8608
3963 8640 3972 8647 3992 8629 3993 8624
3997 8624 4003 8619
TIME...MOT...LOC 1452Z 241DEG 35KT 3969 8633
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH
BRBThe Indianapolis radar (KIND), 2 km away, was scanning. The volume nearest the first event began at 14:50 UTC.
1 thunderstorm wind. Local standard time, as filed.
Wind gust measured at IND Indianapolis Int'l Airport ASOS.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Indiana in 2022Every state in 2022This day in weather historyWarnings in Indiana, April 2022
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: 1007541.