During the evening hours of July 16th, a series of pulse thunderstorms caused isolated damaging winds in Daviess county along with minor flooding where several rounds of storms impacted the same areas. A weakly rotating storm moved through southern Decatur county, but no reports of damage were received.
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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 evening hours of July 16th, a series of pulse thunderstorms caused isolated damaging winds in Daviess county along with minor flooding where several rounds of storms impacted the same areas. A weakly rotating storm moved through southern Decatur county, but no reports of damage were received.
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 16, 1:50 PM EST, 30 minutes earlier.
Area Forecast Discussion National Weather Service Indianapolis IN 250 PM EDT Fri Jul 16 2021 .Short Term...(This afternoon through Saturday night) Issued at 249 PM EDT Fri Jul 16 2021 Expecting shower and thunderstorm activity to increase over the next few hours, as a mid level vorticity center drifts out of southern Illinois. Earlier convective outflows has pushed the most unstable air to near and south of the Ohio River, however with the approaching wave, the air mass has been destabilizing over southwest Indiana. Further destabilization over southern Indiana will probably occur later this afternoon into early this evening, as the remnant outflow drifts back north with the approaching wave. Modest amounts of deep layer shear, along with the potential for enhanced helicity values over the central and southern zones ahead of the wave, may result in a high wind threat or rotation in any stronger storms that may develop through this evening. In addition, high precipitable waters around 1.80 inches may result in locally heavy rainfall amounts. Short term model guidance suggests this wave will move off to the east by late tonight, so convective potential should diminish after 170600Z. Based on above, will go with high PoPs into the late evening hours, with PoPs tapering off after that. Otherwise, diffuse frontal zone off to the north is expected to drift south of the forecast area during the day Saturday. Will keep some PoPs going through the day Saturday and on into Saturday evening, to cover the passage of the surface front, and for a lingering upper trough that will be sinking southward from the Great Lakes. Progged low level thicknesses generally support the GFS MOS temperature guidance through the period, so little if any adjustments planned there. && .Long Term...(Sunday through Friday) Issued at 249 PM EDT Fri Jul 16 2021 Upper disturbance will pivot southeast across central Sunday. Despite lower precipitable water amounts from 1 to 1.5 inches and the front to the south, enough instability and lift to support isolated to scattered PM storms with the highest amounts south of Interstate 70. After that things should finally be able to dry out for at least a couple of days with the help of surface high pressure. This should allow river flooding to progress without being slowed down by more rain. That said, an upper ridge over the west will promote northwest flow aloft over the area. No big signals yet, but would not rule out ridge riders that could bring convection back to the area late next week. Temperatures will start off below normal Sunday with afternoon highs around 80 degrees under the influence of north and northwest winds around Great Lakes high pressure. After that, should see seasonable afternoon temperatures in the middle and upper 80s and overnight lows in the 60s. It will also be less humid with dew points in the 60s instead of lower 70s like they have been. && .Aviation...(161800Z TAF Issuance) Issued at 1229 PM EDT Fri Jul 16 2021 IMPACTS: - Scattered thunderstorm activity, mainly over the central and southern terminals, roughly 161900Z-170300Z. - Localized IFR ceilings, mainly over the northern terminals, will lift and scatter out early this afternoon, but redevelop and expand after dark tonight. - Surface winds 190-220 degrees at 6-10 kts through this evening.. DISCUSSION: Expecting thunderstorm activity to increase in coverage over the next few hours, as a mid level vorticity center currently entering southwest Illinois, heads towards southwest Indiana. Earlier convective outflows have pushed the most unstable air to near and south of the Ohio RIver. As the wave approaches, some of this more unstable air may advect back into southern zones later this afternoon, so expecting the better potential for convection directly impacting a terminal will be over the central and southern areas. Brief IFR visibility restrictions and gusty shifting winds are possible in and near stronger cells. Convective potential should tail off later this evening, as the mid level feature shifts off to the east. Lingering localized IFR ceilings over the central and northern areas should lift with modest boundary layer heating. However, IFR ceilings expected to redevelop and expand with time after dark tonight, as the winds drop off and low level moisture convergence continues along a weak frontal zone nearby. && .IND WATCHES/WARNINGS/ADVISORIES... None. && Short Term...JAS Long Term...Koch Aviation...JAS
Hazardous Weather Outlook National Weather Service Indianapolis IN 342 AM EDT Fri Jul 16 2021 INZ021-028>031-035>049-051>057-060>065-067>072-170745- 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 342 AM EDT Fri Jul 16 2021 This hazardous weather outlook is for central Indiana. .DAY ONE...Today and Tonight. Thunderstorms are expected this afternoon through tonight. An isolated strong or severe storm may be possible this afternoon through tonight. Locally heavy rain and lightning will also be possible with any storm through the period. Flooding could develop in areas that see repeated storms and heavy rain. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Thunderstorms are possible again Saturday and Sunday. Severe storms are no expected at this time. Lightning is a threat with any thunderstorm. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this afternoon and tonight. && More information, along with other weather, hydrological and climate information can be found at http://weather.gov/ind Puma
Special Weather Statement National Weather Service Indianapolis IN 304 PM EDT Fri Jul 16 2021 INZ062-063-070-071-161930- Brown-Lawrence-Jackson-Monroe- 304 PM EDT Fri Jul 16 2021 ...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN MONROE... SOUTHWESTERN BROWN...NORTHEASTERN LAWRENCE AND NORTHWESTERN JACKSON COUNTIES... At 303 PM EDT, a strong thunderstorm was located near Bedford, moving northeast at 25 mph. Wind gusts up to 50 mph are possible with this storm. Locations impacted include... Yellowwood Lake, Spurgeons Corner, Heltonville, Norman, Woodville Hills, Elkinsville, Charles Deam Wilderness, Bartlettsville and Story. This storm may intensify, so be certain to monitor local radio stations and available television stations for additional information and possible warnings from the National Weather Service. LAT...LON 3888 8641 3892 8650 3920 8636 3904 8608 TIME...MOT...LOC 1903Z 216DEG 20KT 3892 8643 MK
The Evansville,IN radar (KVWX), 91 km away, was scanning. The volume nearest the first event began at 19:20 UTC.
1 thunderstorm wind. Local standard time, as filed.
A 59 mph thunderstorm wind gust was measured at this location. Small limbs were also broken off of Red and Silver Maple trees at the same location.
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, July 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: 960661.