Widely scattered thunderstorms developed across central Illinois ahead of a weak short-wave trough during the late afternoon and evening of June 19th. Very dry air at low-levels of the atmosphere allowed for excellent evaporational cooling conditions.
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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 ILX wrote it up.
Widely scattered thunderstorms developed across central Illinois ahead of a weak short-wave trough during the late afternoon and evening of June 19th. Very dry air at low-levels of the atmosphere allowed for excellent evaporational cooling conditions. As a result, the storms produced 50-60 mph wind gusts. A downburst with estimated 70 mph winds created enhanced wind damage in Bartonville in Peoria County.
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 Lincoln, IL wrote its last area forecast discussion before the first event at Jun 19, 1:56 PM CST, 3 hours 32 minutes earlier.
Area Forecast Discussion National Weather Service Lincoln IL 256 PM CDT Mon Jun 19 2017 .SHORT TERM...(This evening through Tuesday) ISSUED AT 224 PM CDT Mon Jun 19 2017 Deep cyclonic flow will linger across central and southeast Illinois through the period. This flow regime, coupled with unseasonably cool temperatures aloft, is supportive of deep diurnal mixing/gusty winds and spotty diurnal convection. The threat for isolated showers and storms will linger for a couple hours early this evening before peak diurnal instability is lost. The threat for isolated showers/storms will return by Tuesday afternoon. The relatively dry air mass in place will help keep storm coverage and CAPE values to a minimum, but the dry air beneath cloud level could support some strong convective wind gusts. && .LONG TERM...(Tuesday night through Monday) ISSUED AT 224 PM CDT Mon Jun 19 2017 Upper-level flow flattens out for the middle of the week, allowing temperatures to climb back above normal. A strong wave is progged to track across Canada within this developing flow regime. Shower/storm chances increase across at least northern portion of the forecast area late Wednesday night into Thursday as an associated storm complex may impact the area. Precipitation chances increase across the entire forecast area Thursday night into Friday as the wave tracks further east across Canada and a trailing frontal boundary settles across the forecast area. Beyond Friday, much more considerable uncertainty enters the local precipitaton forecast. There are differences in exactly where the trailing front eventually stalls, and how often it is activated by disturbances riding along it. Further complicating issues is the potential tropical system over the Gulf of Mexico for late in the week, which may have impacts on the weather pattern locally. Model trends will need to be watched closely as a consensus is hopefully reached sooner rather than later. && .AVIATION...(For the 18Z TAFS through 18Z Tuesday afternoon) Issued at 1219 PM CDT Mon Jun 19 2017 Deep mixing will result in gusty west-northwest winds into early evening across the central Illinois terminals. Winds should decouple early this evening, with speeds falling below 10kts for the remainder of the 18Z TAF valid time. Peak daytime heating, coupled with a couple upper-level disturbances, will result in spotty showers or thunderstorms into early evening. Coverage should remain too low to go above a VCSH/VCTS mention at this time. VFR conditions should prevail through the entire forecast period. && .ILX WATCHES/WARNINGS/ADVISORIES... NONE. && SHORT TERM...Bak LONG TERM...Bak AVIATION...Bak
Hazardous Weather Outlook National Weather Service Lincoln IL 319 PM CDT Mon Jun 19 2017 ILZ036-040>044-047>057-061-201100- Cass-Christian-Coles-De Witt-Douglas-Edgar-Fulton-Logan-Macon- Mason-Menard-Morgan-Moultrie-Piatt-Sangamon-Schuyler-Scott-Shelby- 319 PM CDT Mon Jun 19 2017 This Hazardous Weather Outlook is for portions of central Illinois, east central Illinois and west central Illinois. .DAY ONE...TONIGHT... Isolated to widely scattered thunderstorms will be possible into early this evening. Severe weather is not expected, however, the stronger storms may produce gusty winds and small hail mainly along and north of the Interstate 74 corridor. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY... An isolated thunderstorm will be possible again Tuesday afternoon. No severe weather is expected. There will be a chance for thunderstorms late Wednesday night into Thursday morning, especially along and west of Interstate 55. At this time, no severe weather is expected. A frontal boundary will slip south across the area late Thursday bringing the best chances for showers and thunderstorms. Chances will last into at least the start of the weekend bringing daily chances for thunderstorms to the area. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed through tonight. ILZ062-063-066>068-071>073-201100- Clark-Clay-Crawford-Cumberland-Effingham-Jasper-Lawrence-Richland- 319 PM CDT Mon Jun 19 2017 This Hazardous Weather Outlook is for portions of east central Illinois and southeast Illinois. .DAY ONE...TONIGHT... No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY... A frontal boundary will slip south across the area late Thursday bringing the best chances for showers and thunderstorms. Chances will last into at least the start of the weekend bringing daily chances for thunderstorms to the area. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed through tonight. ILZ027>031-037-038-045-046-201100- Champaign-Knox-Marshall-McLean-Peoria-Stark-Tazewell-Vermilion- Woodford- 319 PM CDT Mon Jun 19 2017 This Hazardous Weather Outlook is for portions of central Illinois, east central Illinois and west central Illinois. .DAY ONE...TONIGHT... Isolated to widely scattered thunderstorms will be possible into early this evening. There is a marginal risk of severe weather, with damaging winds and large hail possible with the strongest storms. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY... An isolated thunderstorm will be possible again Tuesday afternoon. No severe weather is expected. There will be a chance for thunderstorms late Wednesday night into Thursday morning, especially along and west of Interstate 55. At this time, no severe weather is expected. A frontal boundary will slip south across the area late Thursday bringing the best chances for showers and thunderstorms. Chances will last into at least the start of the weekend bringing daily chances for thunderstorms to the area. .SPOTTER INFORMATION STATEMENT... Spotter activation might be requested later this afternoon. HJS
Special Weather Statement National Weather Service Lincoln IL 445 PM CDT MON JUN 19 2017 ILZ028>031-037-192230- Tazewell-Marshall-Peoria-Woodford-Stark- 445 PM CDT MON JUN 19 2017 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN MARSHALL... NORTHWESTERN WOODFORD...SOUTHERN STARK...NORTHEASTERN TAZEWELL AND NORTHERN PEORIA COUNTIES UNTIL 530 PM CDT... At 445 PM CDT, Doppler radar was tracking a strong thunderstorm near West Jersey, or 15 miles south of Kewanee, moving southeast at 35 mph. Dime size hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Peoria, Eureka, East Peoria, Washington, Chillicothe, Metamora, Germantown Hills, Princeville, Rome, Wyoming, Dunlap, Toulon, Washburn, Spring Bay, Bay View Gardens, West Jersey, Laura, Elmore, Peoria Heights and Cazenovia. LAT...LON 4094 8999 4111 8992 4093 8910 4063 8937 TIME...MOT...LOC 2145Z 296DEG 31KT 4103 8987 Barnes
Special Weather Statement
National Weather Service Lincoln IL
542 PM CDT MON JUN 19 2017
ILZ027>030-192330-
Marshall-Peoria-Knox-Stark-
542 PM CDT MON JUN 19 2017
...SIGNIFICANT WEATHER ADVISORY FOR WESTERN MARSHALL...STARK...
NORTHEASTERN KNOX AND NORTHERN PEORIA COUNTIES UNTIL 630 PM CDT...
At 541 PM CDT, Doppler radar was tracking a strong thunderstorm over
Galva, or 7 miles southwest of Kewanee, moving southeast at 35 mph.
Dime size hail and winds in excess of 40 mph will be possible with
this storm.
Locations impacted include...
Princeville, Wyoming, Toulon, Elmira, West Jersey, La Fayette,
Castleton, Camp Grove, Duncan, Monica and Lawn Ridge.
LAT...LON 4106 8946 4085 8984 4115 9018 4115 8987
4123 8986
TIME...MOT...LOC 2241Z 312DEG 32KT 4119 9005
BarnesSpecial Weather Statement National Weather Service Lincoln IL 552 PM CDT MON JUN 19 2017 ILZ027-029-036-192345- Peoria-Knox-Fulton- 552 PM CDT MON JUN 19 2017 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN FULTON... SOUTHEASTERN KNOX AND SOUTHWESTERN PEORIA COUNTIES UNTIL 645 PM CDT... At 552 PM CDT, Doppler radar was tracking a strong thunderstorm near Maquon, or 15 miles northwest of Canton, moving east at 35 mph. Dime size hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Canton, Farmington, Elmwood, Hanna City, Trivoli, Yates City, Fairview, London Mills, Maquon, Norris, Banner, Smithville and Middle Grove. LAT...LON 4070 9030 4081 9023 4074 8974 4050 8989 TIME...MOT...LOC 2252Z 286DEG 23KT 4075 9020 Barnes
Special Weather Statement National Weather Service Lincoln IL 624 PM CDT MON JUN 19 2017 ILZ029-031-037-200015- Tazewell-Peoria-Woodford- 624 PM CDT MON JUN 19 2017 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN WOODFORD...CENTRAL TAZEWELL AND SOUTHEASTERN PEORIA COUNTIES UNTIL 715 PM CDT... At 623 PM CDT, Doppler radar was tracking strong thunderstorms along a West Peoria to Glasford line, moving east at 45 mph. Dime size hail and winds in excess of 40 mph will be possible with these storms. Locations impacted include... Peoria, Pekin, Eureka, East Peoria, Morton, Washington, Bartonville, Creve Coeur, West Peoria, Germantown Hills, Marquette Heights, Tremont, Bellevue, Mackinaw, South Pekin, Glasford, Goodfield, Deer Creek, Peoria Heights and North Pekin. This includes the following highways... Interstate 155 between mile markers 20 and 31. Interstate 474 between mile markers 0 and 14. Interstate 74 between mile markers 84 and 113. LAT...LON 4077 8917 4043 8935 4050 8988 4080 8970 TIME...MOT...LOC 2323Z 281DEG 39KT 4070 8963 Barnes
The Lincoln radar (KILX), 62 km away, was scanning. The volume nearest the first event began at 23:28 UTC.
4 thunderstorm wind. Local standard time, as filed.
Numerous large trees and power lines were blown down.
Two 6-inch diameter tree limbs were blown down.
A large tree branch was blown down.
A large tree limb was blown down at the intersection of Springfield Avenue and 2nd Street.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2017Every state in 2017This day in weather historyWarnings in Illinois, June 2017
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: 700308, 700309, 700310, 700311.