A cold front interacting with a moderately unstable airmass triggered scattered strong thunderstorms across west-central Illinois during the late afternoon and early evening of August 10th. One cell produced wind gusts of around 60mph that blew down a tree in Vermont in Fulton County.
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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.
A cold front interacting with a moderately unstable airmass triggered scattered strong thunderstorms across west-central Illinois during the late afternoon and early evening of August 10th. One cell produced wind gusts of around 60mph that blew down a tree in Vermont in Fulton 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 Aug 10, 4:42 PM CST, 1 hour 43 minutes earlier.
Area Forecast Discussion National Weather Service Lincoln IL 542 PM CDT Thu Aug 10 2017 .SHORT TERM...(This evening through Friday) ISSUED AT 234 PM CDT Thu Aug 10 2017 Developing surface low over northern WI this afternoon has a front stretched south and southwest through the Quad Cities and into the Plains. A prefrontal trough has moved across the region today, producing showers and thunderstorms north and south of Central IL, but have so far remained clear of ILX warning area. Cumulus field is pretty expansive across the region on satellite imagery, but has done little to prevent the temperatures from climbing into the low to mid 80s. Short term concern is the line of precipitation and thunder that is currently firing to the NW, closer to the actual front. HRRR and NAM settles the front across the area this evening/tonight. The NAM barely brings much in the way of precip through...whereas the HRRR is far more aggressive in settling the thunderstorms into the area. RAP is falling somewhere in between. Front slows considerably in the overnight hours and the precip slows and stretches out east to west, in mainly parallel flow, before weakening. Front is only expected to make it into the southeast by tomorrow mid morning...and have to maintain pops in the east central and southeastern portions of ILX through midday. With the cold front, slightly cooler air moves into place, but tomorrows highs will only vary by a couple degrees. The winds will become more west/northwesterly but remain under 10kts through the day. .LONG TERM...(Friday night through Thursday) ISSUED AT 234 PM CDT Thu Aug 10 2017 Cooler temperatures continue through the weekend as the highs top out in the upper 70s/near 80. Friday night through most of Sunday, the weather looks mild and dry, but a quick shortwave ripples through at 500mb aloft. This wave will push another, quicker system through the Midwest, bringing the next chance for precip/thunderstorms. A brief respite from the rain for Tues/Tues night, but here is where the models start to diverge pretty distinctly. Both GFS and ECMWF start to hint at an active pattern with a series of waves moving through an almost zonal set up aloft. Details in the extended will surely shift through the next few forecasts...but the set up is for a potentially active pattern. && .AVIATION...(For the 00Z TAFS through 00Z Friday evening) Issued at 540 PM CDT Thu Aug 10 2017 Widely scattered thunderstorms will affect some of our TAF sites this evening which may bring about brief MVFR cigs with heavy rain and gusty winds. Away from any thunderstorm this evening, we are expecting mainly VFR conditions this forecast period. One time frame of concern is between 13z and 17z Friday when a cool front will be pushing across the area. A few models have suggested some MVFR cigs will be possible along and just after FROPA. At this point, will lower cigs a bit but keep them above MVFR category Friday morning. Southwest winds of 5 to 10 kts tonight, but much higher in and near any strong TSRA, will become west to northwest Friday morning and mainly northwest at 8 to 13 kts across most of the area during the afternoon. && .ILX WATCHES/WARNINGS/ADVISORIES... NONE. && SHORT TERM...HJS LONG TERM...HJS AVIATION...Smith
Hazardous Weather Outlook National Weather Service Lincoln IL 325 PM CDT Thu Aug 10 2017 ILZ027>031-036-111100- Fulton-Knox-Marshall-Peoria-Stark-Woodford- 325 PM CDT Thu Aug 10 2017 This Hazardous Weather Outlook is for portions of central Illinois and west central Illinois. .DAY ONE...TONIGHT... Scattered storms are possible late this afternoon into tonight as a slow moving weather system moves into the area. There is a slight risk that some of these storms could become severe with damaging winds possible this evening. Brief heavy rainfall, large hail, and lightning will also be a concern with the stronger thunderstorms. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY... No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed from 6 pm until 10 pm. ILZ037-038-040>043-047>051-111100- Cass-De Witt-Logan-Mason-McLean-Menard-Morgan-Sangamon-Schuyler- Scott-Tazewell- 325 PM CDT Thu Aug 10 2017 This Hazardous Weather Outlook is for portions of central Illinois and west central Illinois. .DAY ONE...TONIGHT... Scattered storms are possible tonight as a slow moving weather system moves into the area. There is a marginal risk that some of these storms could become severe with hail up to an inch and strong winds possible. Brief heavy rainfall and lightning will also be a concern with the stronger thunderstorms. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY... No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated through tonight. ILZ044>046-052>057-061>063-066>068-071>073-111100- Champaign-Christian-Clark-Clay-Coles-Crawford-Cumberland-Douglas- Edgar-Effingham-Jasper-Lawrence-Macon-Moultrie-Piatt-Richland- Shelby-Vermilion- 325 PM CDT Thu Aug 10 2017 This Hazardous Weather Outlook is for portions of central Illinois, east central Illinois and southeast Illinois. .DAY ONE...TONIGHT... Isolated thunderstorms are possible through tonight. At this time, severe weather is not expected. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY... Isolated thunderstorms will continue into Friday and possibly Friday evening, as the system continues to move through the region. These storms are not expected to be severe. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated through tonight. Barker
Special Weather Statement
National Weather Service Lincoln IL
648 PM CDT THU AUG 10 2017
ILZ036-040-110030-
Schuyler-Fulton-
648 PM CDT THU AUG 10 2017
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN FULTON AND SCHUYLER
COUNTIES UNTIL 730 PM CDT...
At 648 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from Western Illinois University to near Augusta.
Movement was southeast at 30 mph.
Winds in excess of 40 mph will be possible with these storms.
Locations impacted include...
Rushville, Astoria, Vermont, Littleton, Browning, Table Grove,
Frederick, Huntsville, Camden, Ripley, Bluff City, Ray and Weinberg
King State Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
These storms 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 4029 9091 4027 9045 4041 9045 4020 9018
4015 9025 4012 9037 4004 9043 3998 9055
3999 9061 4003 9061 4002 9063 4005 9068
4008 9067 4008 9070 4011 9071 4011 9091
TIME...MOT...LOC 2348Z 335DEG 26KT 4048 9069 4029 9099
BarkerThe Lincoln radar (KILX), 94 km away, was scanning. The volume nearest the first event began at 00:23 UTC.
1 thunderstorm wind. Local standard time, as filed.
A tree was blown down, taking out a power line.
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, August 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: 718700.