During the morning hours of April 1st, gradient winds in the aftermath of the March 31st storm system brought isolated wind damage to central Indiana. Winds were strongest during the mid-morning hours and gradually decreased in intensity by the afternoon.
Every event with a place to put it; 4 filed by county or forecast zone are drawn at its center, in a lighter ring. 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.
During the morning hours of April 1st, gradient winds in the aftermath of the March 31st storm system brought isolated wind damage to central Indiana. Winds were strongest during the mid-morning hours and gradually decreased in intensity by the afternoon.
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 1, 6:01 AM EST, 59 minutes earlier.
Area Forecast Discussion National Weather Service Indianapolis IN 701 AM EDT Sat Apr 1 2023 ...Updated Aviation Discussion... .Short Term...(Today and tonight) Issued at 217 AM EDT Sat Apr 1 2023 Deep closed low will progress eastward across the southern Great Lakes today. Another vort maxima lobe will rotate through providing forcing for ascent, along with residual low level moisture and steep lapse rates will result in scattered showers developing by mid- morning through afternoon. Given the shallow convective nature, and thermal profiles, it is possible that some graupel could briefly mix in shortly after development in the late morning. This precipitation will primarily be across the northeast half of the area into the evening. Preceding this, a cold front will move through during the early morning, and as soon as we start mixing into very strong wind aloft (i.e., 90-kt 700-mb jet core) strong gusts will start. We will continue the Wind Advisory, though as the midlevel speed max moves east, wind gusts may lessen some during the afternoon, so gusts up to 50 mph may primarily be through early afternoon before subsiding. Cold advection should hold temperatures in the low to mid 40s during the afternoon. && .Long Term...(Sunday through Friday) Issued at 217 AM EDT Sat Apr 1 2023 We will continue in a progressive low amplitude flow pattern that will evolve to split flow before becoming quite amplified by Tuesday. This is as an impressive deep trough evolves over west and central CONUS. Before this happens, one low amplitude wave will interact with returning moisture to bring some rain Monday into early Tuesday. As strong warm/moist advection regime evolves preceding the intense mid-latitude system to our west on Tuesday, more rain will develop. We are growing increasingly concerned about episodic severe weather across the region, though the details on timing and specifically which areas are impacted the hardest are unclear at the moment. Current thinking is a dangerous setup of very broad warm sector with anomalous moisture and broad low-level jet/strong mass response to the main mid-latitude system will bring a risk of severe storms to Indiana at least with the frontal passage into Wednesday. There may also be severe thunderstorms in our area preceding this with either (1) the warm advection regime, or (2) associated with a weak midlevel perturbation that moves out of the Arklatex region Tuesday. The ceiling for this event is high across broader region, with the potential for significant severe and tornadoes. This may primarily be centered west of Indiana, but these details will become more clear over the next couple of days. The synoptic pattern after this system into the latter half of the week is a little more uncertain, given growing spread in ensemble spaghetti plots and cluster analysis. One possibility is for a lifting track and quick modest midlevel height rises keeping temperatures at least at climo if not slightly above. We would generally be dry as west-northwesterly flow pattern would suppress deeper moisture to our south and we would generally experience a drier continental air mass. Weak perturbations would only bring brief generally light precipitation events into next weekend. && .Aviation...(12Z TAF Issuance) Issued at 701 AM EDT Sat Apr 1 2023 Impacts: * Strong wind gusts behind a cold front starting early this morning * Period of MVFR stratus late morning into afternoon * Decreasing winds late afternoon/evening Discussion: Stratus will increase later this morning behind a cold front, and wind gusts will increase considerably as soon as we start mixing. Winds should subside gradually this afternoon. MVFR stratus will start late morning into the afternoon. && .IND WATCHES/WARNINGS/ADVISORIES... Wind Advisory until 6 PM EDT this evening for INZ021-028>031- 035>049-051>057-060>065-067>072. && Short Term...BRB Long Term...BRB Aviation...BRB
Hazardous Weather Outlook National Weather Service Indianapolis IN 235 AM EDT Sat Apr 1 2023 INZ021-028>031-035>049-051>057-060>065-067>072-020645- 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 235 AM EDT Sat Apr 1 2023 This hazardous weather outlook is for central Indiana. .DAY ONE...Today and Tonight. Strong winds gusts up to 50 mph are possible this morning through early to mid afternoon. .DAYS TWO THROUGH SEVEN...Sunday through Friday. There is a chance of thunderstorms Monday night through Wednesday. Severe storms including large hail, damaging winds, and tornadoes are possible during this period, primarily Tuesday afternoon through early Wednesday. .SPOTTER INFORMATION STATEMENT... Spotters may be needed Tuesday and Wednesday. && More information, along with other weather, hydrological and climate information can be found at http://weather.gov/ind
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
436 AM EDT SAT APR 1 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1041 PM TSTM WND DMG 1 SW COLFAX 40.18N 86.68W
03/31/2023 CLINTON IN PUBLIC
THUNDERSTORM WINDS SNAPPED TOPS OFF OF 20
TREES AND BLEW ROOF OF OF BARN.
&&
AGMPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
442 AM EDT SAT APR 1 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1123 PM TSTM WND DMG 3 S PARAGON 39.35N 86.56W
03/31/2023 MORGAN IN TRAINED SPOTTER
THUNDERSTORM WINDS DOWNED NUMEROUS LARGE
TREES AND SNAPPED POWER POLES. TIME
ESTIMATED.
&&
AGMPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
455 AM EDT SAT APR 1 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1155 PM TSTM WND DMG MORRISTOWN 39.67N 85.70W
03/31/2023 SHELBY IN BROADCAST MEDIA
THUNDERSTORM WINDS DOWNED GAS STATION
OVERHANGING ROOF. TIME ESTIMATED.
&&
AGMPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
507 AM EDT SAT APR 1 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1150 PM TSTM WND GST 2 S ANDERSON 40.06N 85.69W
03/31/2023 E65 MPH MADISON IN TRAINED SPOTTER
WINDS AT ONSET OF THUNDERSTORM. REPORTS OF
NUMEROUS POWER POLES AND LINES DOWN ACROSS
MADISON COUNTY. TIME ESTIMATED.
&&
AGMPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
623 AM EDT SAT APR 1 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0936 PM HAIL 4 W RAINSVILLE 40.41N 87.39W
03/31/2023 E1.00 INCH WARREN IN AMATEUR RADIO
1024 PM TSTM WND DMG 3 WSW SULLIVAN 39.08N 87.46W
03/31/2023 SULLIVAN IN EMERGENCY MNGR
*** 2 FATAL, 1 INJ ***
THUNDERSTORM WINDS CONSISTENT WITH PROBABLE
TORNADO. 2 FATALITIES AND 1 INJURY AND 1
PERSON MISSING. TIME ESTIMATED.
1030 PM TSTM WND DMG 8 WNW BATTLE GROUND 40.54N 86.98W
03/31/2023 TIPPECANOE IN EMERGENCY MNGR
THUNDERSTORM WINDS FLATTENED 2 STRUCTURES TO
BASEMENT. SEVERAL OTHER STRUCTURES WITH
ROOFS BLOWN OFF NEAR JUNCTION OF BENTON
TIPPECANOE AND WHITE COUNTIES. 1 INCH HAIL
ALSO REPORTED NEAR US HIGHWAY 231. TIME
ESTIMATED BY RADAR.
1035 PM TSTM WND GST 2 N NEW MARKET 39.98N 86.92W
03/31/2023 M59 MPH MONTGOMERY IN AWOS
OBSERVED AT KCFJ AWOS.
1040 PM HAIL 2 S DARLINGTON 40.08N 86.77W
03/31/2023 E1.00 INCH MONTGOMERY IN PUBLIC
1041 PM TSTM WND DMG 1 SW COLFAX 40.18N 86.68W
03/31/2023 CLINTON IN PUBLIC
THUNDERSTORM WINDS SNAPPED TOPS OFF OF 20
TREES AND BLEW ROOF OF OF BARN.
1045 PM TSTM WND DMG 1 W THORNTOWN 40.13N 86.63W
03/31/2023 BOONE IN TRAINED SPOTTER
BARN DESTROYED. TIME ESTIMATED VIA RADAR.
1053 PM TSTM WND GST PATRICKSBURG 39.31N 86.96W
03/31/2023 E75 MPH OWEN IN 911 CALL CENTER
PEA SIZED HAIL ALSO REPORTED.
1110 PM TSTM WND GST GOSPORT 39.35N 86.67W
03/31/2023 M83 MPH OWEN IN TRAINED SPOTTER
SEVERE WINDS LASTED 8 MINUTES 1110PM TO
1118PM. 3 TREES DOWN. DIME HAIL.
1123 PM TSTM WND DMG 3 S PARAGON 39.35N 86.56W
03/31/2023 MORGAN IN TRAINED SPOTTER
THUNDERSTORM WINDS DOWNED NUMEROUS LARGE
TREES AND SNAPPED POWER POLES. TIME
ESTIMATED.
1123 PM TSTM WND DMG 3 ENE PARAGON 39.41N 86.50W
03/31/2023 MORGAN IN AMATEUR RADIO
WINDS DOWNED MULTIPLE TREES WITH
CONSIDERABLE HOME DAMAGE BETWEEN
MARTINSVILLE AND PARAGON. ALSO ESTIMATED 60
MPH WINDS IN PARAGON.
1125 PM TSTM WND DMG 4 ENE RUSSIAVILLE 40.43N 86.20W
03/31/2023 HOWARD IN AMATEUR RADIO
TWO HOMES PARTIALLY COLLAPSED AND TREES DOWN
AT COUNTY ROADS 400 WEST AND 300 SOUTH.
BUILDING COLLAPSED AT COUNTY ROADS 750 WEST
AND 5145 SOUTH. POSSIBLE FUNNEL CLOUD AT
ROUTE 26 AND PARK ROAD. MISCELLANEOUS DEBRIS
AT ALTO ROAD AND PARK ROAD. TIME ESTIMATED.
1129 PM TSTM WND DMG MONROVIA 39.58N 86.48W
03/31/2023 MORGAN IN NWS EMPLOYEE
PRIVACY FENCE DESTROYED AND WINDOW BROKEN.
1133 PM TSTM WND DMG 1 SSE WHITELAND 39.54N 86.08W
03/31/2023 JOHNSON IN 911 CALL CENTER
THUNDERSTORM WINDS CONSISTENT WITH PROBABLE
TORNADO DESTROYED MULTIPLE HOMES ON BOTH
SIDES OF US HIGHWAY 31 WITH WAREHOUSE
DAMAGE. TIME ESTIMATED.
1134 PM TSTM WND GST 1 SSE EAGLE CREEK RESER 39.83N 86.30W
03/31/2023 M59 MPH MARION IN ASOS
ASOS STATION KEYE INDIANAPOLIS (EAGLE
CREEK).
1136 PM TSTM WND GST INDIANAPOLIS INTL AIRP 39.72N 86.29W
03/31/2023 E67 MPH MARION IN ASOS
1140 PM TSTM WND GST 3 E AVON 39.76N 86.34W
03/31/2023 E65 MPH HENDRICKS IN TRAINED SPOTTER
1150 PM TSTM WND GST 2 S ANDERSON 40.06N 85.69W
03/31/2023 E65 MPH MADISON IN TRAINED SPOTTER
WINDS AT ONSET OF THUNDERSTORM. REPORTS OF
NUMEROUS POWER POLES AND LINES DOWN ACROSS
MADISON COUNTY. TIME ESTIMATED.
1155 PM TSTM WND DMG MORRISTOWN 39.67N 85.70W
03/31/2023 SHELBY IN BROADCAST MEDIA
THUNDERSTORM WINDS DOWNED GAS STATION
OVERHANGING ROOF. TIME ESTIMATED.
1205 AM HAIL ALBANY 40.30N 85.23W
04/01/2023 E1.00 INCH DELAWARE IN AMATEUR RADIO
&&
AGMPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
636 AM EDT SAT APR 1 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0936 PM HAIL 4 W RAINSVILLE 40.41N 87.39W
03/31/2023 E1.00 INCH WARREN IN AMATEUR RADIO
1030 PM TSTM WND DMG 8 WNW BATTLE GROUND 40.54N 86.98W
03/31/2023 TIPPECANOE IN EMERGENCY MNGR
THUNDERSTORM WINDS FLATTENED 2 STRUCTURES TO
BASEMENT. SEVERAL OTHER STRUCTURES WITH
ROOFS BLOWN OFF NEAR JUNCTION OF BENTON
TIPPECANOE AND WHITE COUNTIES. 1 INCH HAIL
ALSO REPORTED NEAR US HIGHWAY 231. TIME
ESTIMATED BY RADAR.
1024 PM TSTM WND DMG 3 WSW SULLIVAN 39.08N 87.46W
03/31/2023 SULLIVAN IN EMERGENCY MNGR
*** 2 FATAL, 1 INJ ***
THUNDERSTORM WINDS CONSISTENT WITH PROBABLE
TORNADO. 2 FATALITIES AND 1 INJURY AND 1
PERSON MISSING. TIME ESTIMATED.
1155 PM TSTM WND DMG MORRISTOWN 39.67N 85.70W
03/31/2023 SHELBY IN BROADCAST MEDIA
THUNDERSTORM WINDS DOWNED GAS STATION
OVERHANGING ROOF. TIME ESTIMATED.
1053 PM TSTM WND GST PATRICKSBURG 39.31N 86.96W
03/31/2023 E75 MPH OWEN IN 911 CALL CENTER
PEA SIZED HAIL ALSO REPORTED.
1110 PM TSTM WND GST GOSPORT 39.35N 86.67W
03/31/2023 M83 MPH OWEN IN TRAINED SPOTTER
SEVERE WINDS LASTED 8 MINUTES 1110PM TO
1118PM. 3 TREES DOWN. DIME HAIL.
1123 PM TSTM WND DMG 3 ENE PARAGON 39.41N 86.50W
03/31/2023 MORGAN IN AMATEUR RADIO
WINDS DOWNED MULTIPLE TREES WITH
CONSIDERABLE HOME DAMAGE BETWEEN
MARTINSVILLE AND PARAGON. ALSO ESTIMATED 60
MPH WINDS IN PARAGON.
1123 PM TSTM WND DMG 3 S PARAGON 39.35N 86.56W
03/31/2023 MORGAN IN TRAINED SPOTTER
THUNDERSTORM WINDS DOWNED NUMEROUS LARGE
TREES AND SNAPPED POWER POLES. TIME
ESTIMATED.
1129 PM TSTM WND DMG MONROVIA 39.58N 86.48W
03/31/2023 MORGAN IN NWS EMPLOYEE
PRIVACY FENCE DESTROYED AND WINDOW BROKEN.
1035 PM TSTM WND GST 2 N NEW MARKET 39.98N 86.92W
03/31/2023 M59 MPH MONTGOMERY IN AWOS
OBSERVED AT KCFJ AWOS.
1040 PM HAIL 2 S DARLINGTON 40.08N 86.77W
03/31/2023 E1.00 INCH MONTGOMERY IN PUBLIC
1134 PM TSTM WND GST 1 SSE EAGLE CREEK RESER 39.83N 86.30W
03/31/2023 M59 MPH MARION IN ASOS
ASOS STATION KEYE INDIANAPOLIS (EAGLE
CREEK).
1136 PM TSTM WND GST INDIANAPOLIS INT'L AIRP 39.72N 86.29W
03/31/2023 E67 MPH MARION IN ASOS
1150 PM TSTM WND GST 2 S ANDERSON 40.06N 85.69W
03/31/2023 E65 MPH MADISON IN TRAINED SPOTTER
WINDS AT ONSET OF THUNDERSTORM. REPORTS OF
NUMEROUS POWER POLES AND LINES DOWN ACROSS
MADISON COUNTY. TIME ESTIMATED.
1133 PM TSTM WND DMG 1 SSE WHITELAND 39.54N 86.08W
03/31/2023 JOHNSON IN 911 CALL CENTER
THUNDERSTORM WINDS CONSISTENT WITH PROBABLE
TORNADO DESTROYED MULTIPLE HOMES ON BOTH
SIDES OF US HIGHWAY 31 WITH WAREHOUSE
DAMAGE. TIME ESTIMATED.
1125 PM TSTM WND DMG 4 ENE RUSSIAVILLE 40.43N 86.20W
03/31/2023 HOWARD IN AMATEUR RADIO
THUNDERSTORM WINDS PARTIALLY COLLAPSED 2
HOMES AND DOWNED TREES AT COUNTY ROADS 400
WEST AND 300 SOUTH. BUILDING COLLAPSED AT
750 WEST AND 5145 SOUTH. POSSIBLE FUNNEL
CLOUD AT ROUTE 26 AND PARK ROAD.
MISCELLANEOUS DEBRIS AT ALTO ROAD AND PARK
ROAD.
1140 PM TSTM WND GST 3 E AVON 39.76N 86.34W
03/31/2023 E65 MPH HENDRICKS IN TRAINED SPOTTER
1205 AM HAIL ALBANY 40.30N 85.23W
04/01/2023 E1.00 INCH DELAWARE IN AMATEUR RADIO
1041 PM TSTM WND DMG 1 SW COLFAX 40.18N 86.68W
03/31/2023 CLINTON IN PUBLIC
THUNDERSTORM WINDS SNAPPED TOPS OFF OF 20
TREES AND BLEW ROOF OF OF BARN.
1045 PM TSTM WND DMG 1 W THORNTOWN 40.13N 86.63W
03/31/2023 BOONE IN TRAINED SPOTTER
BARN DESTROYED. TIME ESTIMATED VIA RADAR.
&&The national radar mosaic for the moment the first event began.
4 high wind. Local standard time, as filed.
A 61 mph non-thunderstorm wind gust was measured via an INDOT automated weather station.
A 63 MPH non-thunderstorm wind gust was measured at the KIND ASOS.
A 58 mph non-thunderstorm wind gust was measured at the KMIE ASOS.
A 58 mph non-thunderstorm wind gust was measured at a mesonet station in New Palestine.
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, April 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: 1080516, 1080515, 1080514, 1080517.