A decaying line of thunderstorms pushed into west-central Illinois during the afternoon of July 10th. The storms produced wind gusts of 60-65 mph across northwestern Knox County, resulting in scattered wind damage across the city of Galesburg.
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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 decaying line of thunderstorms pushed into west-central Illinois during the afternoon of July 10th. The storms produced wind gusts of 60-65 mph across northwestern Knox County, resulting in scattered wind damage across the city of Galesburg.
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 Jul 10, 2:04 PM CST, 1 hour 2 minutes earlier.
Area Forecast Discussion National Weather Service Lincoln IL 304 PM CDT SUN JUL 10 2016 .SHORT TERM...(Tonight) ISSUED AT 304 PM CDT Sun Jul 10 2016 Previously a forecast for a quiet day, but a tenacious MCS out of the Upper Midwest is making its way into Illinois this afternoon, bringing the chance for some showers and thunderstorms NW of the Illinois River Valley. Southern and eastern edge had been steadily eroding as well as slowing through the morning and early afternoon. Cloud tops had been steadily warming as well...at least until the southern edge got out from under the cap and started tapping into the greater instability from the mid Miss River Valley and to the south. So far, the more northerly half is considerably weaker, but will likely be getting into more unstable air as well with a more southerly progression. Since the instability gradient runs from the Quad Cities down to PAH, expect the storms to follow that general path. Eastern extent of the showers and thunderstorms difficult to call, as the high pressure ridge is just to the east. Models, both hi and low res...all having problems working with the current conditions. Have been conservative with the pops in the western CWA after 00z...but will have to monitor for further activity. && .LONG TERM...(Monday through Sunday) ISSUED AT 304 PM CDT Sun Jul 10 2016 Summer time heat and humidity will prevail over IL Mon-Wed with highs in the upper 80s to around 90F. This due to upper level ridge over the mid/southern MS river valley expanding into the eastern US and surface high pressure ridge over the western Great Lakes and IN/eastern IL parks off the mid Atlantic coast. Will also see increasing chances of showers and thunderstorms from west to east through mid week with drier weather returning Thu night and Friday. Most of CWA will be dry on Monday and Monday night with nearby upper level high pressure ridge. Just isolated showers and thunderstorms over far nw CWA by overnight Monday night as MCS approaches nw IL from IA later Monday night. Mostly sunny skies and southerly winds will bring more humidity to area on Monday as dewpoints climb into the lower 70s with highs in the upper 80s to near 90F. Afternoon heat indices in the mid to upper 90s. Muggy lows Monday night in the lower 70s, with areas near the IN border in upper 60s to around 70F. Have isolated to scattered convection on Tue with best coverage over the IL river valley. Eastern IL will likely stay dry Tue morning with isolated convection appearing during Tue afternoon. Highs in the upper 80s to around 90F again with dewpoints in the lower 70s with afternoon heat indices of 95-99F. A 562 dm 500 mb low along the eastern WA/OR border will track east along the US/Canadian border and into western Ontario on Wed morning. This will push a frontal boundary se toward nw IL on Wed and increase chances of showers/thunderstorms by overnight Tue night especially over IL river valley and across area on Wed. SPC has slight risk of severe storms north of Peoria on Tue night and the risk of strong to severe storms could shift southeast across the rest of central IL on Wed. Airmass very unstable Wed with CAPES in excess of 3000 J/kg and 0-6 km bulk shear rising to 35-45 kts north of I-72 by 00z/7 pm Thu. Another hot and humid day with highs approaching 90F with dewpoints in the 70s giving afternoon heat indices around 100F. Highs chances of showers/thunderstorms shift se of the IL river on Thu with frontal boundary pushing se through central IL Wed night and over southeast IL on Thu. Highs Thu range from lower 80s nw of IL river to upper 80s southeast of I-70 where heat indices peak near 95F at Lawrenceville. Just slight chance of convection southeast of I-70 Thu evening, the dry and a bit cooler and less humid air Thu night and Fri as weak high pressure ridge settles into the Midwest. Highs Friday mostly in the lower 80s with Lawrenceville near 85F while dewpoints in the mid 60s. Chances of showers and thunderstorms lift back northeast Friday night into especially sw areas and across CWA on Sat/Sun as frontal boundary lifts back northeast. This will also bring back the heat and humidity with dewpoints rising back into the lower 70s and highs in the upper 80s to near 90F by Sunday. && .AVIATION...(For the 18Z TAFS through 18Z Monday afternoon) Issued at 1241 PM CDT Sun Jul 10 2016 MCS to the north providing ample cirrus. Some small patches of cu out there as well, with mostly south/southeasterly winds. For now, keeping the sct/bkn cu in and leaving out the shower activity. For the afternoon, PIA and SPI may end up being updated for VCSH/VCTS if the cu field starts spreading and/or the MCS makes it much further south along the Miss River Valley. The instability gradient is almost in line with the Miss River, and how much it will edge eastward is different in each model, particularly as impacted by current convection approaching from the north. && .ILX Watches/Warnings/Advisories... NONE. && SHORT TERM...HJS LONG TERM...07 AVIATION...HJS
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LINCOLN IL 356 PM CDT SUN JUL 10 2016 ILZ038-042>046-051>057-061>063-066>068-071>073-111100- CHAMPAIGN-CHRISTIAN-CLARK-CLAY-COLES-CRAWFORD-CUMBERLAND-DE WITT- DOUGLAS-EDGAR-EFFINGHAM-JASPER-LAWRENCE-LOGAN-MACON-MCLEAN- MOULTRIE-PIATT-RICHLAND-SANGAMON-SHELBY-VERMILION- 356 PM CDT SUN JUL 10 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS...EAST CENTRAL ILLINOIS...SOUTH CENTRAL ILLINOIS AND SOUTHEAST ILLINOIS. .DAY ONE...TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SUNDAY THUNDERSTORM CHANCES RETURN TO THE AREA BY TUESDAY AFTERNOON INTO THURSDAY. THERE IS ANOTHER CHANCE OF THUNDERSTORMS FRIDAY NIGHT THROUGH SUNDAY. THE THREAT OF SEVERE STORMS APPEARS LOW DURING THIS TIME...THOUGH WEDNESDAY COULD SEE THE STRONGEST STORMS. IN ADDITION...HEAT INDEX VALUES WILL REACH 95 TO 100 DEGREES DURING THE AFTERNOON HOURS FROM MONDAY THROUGH WEDNESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. ILZ027>031-036-037-040-041-047>050-111100- CASS-FULTON-KNOX-MARSHALL-MASON-MENARD-MORGAN-PEORIA-SCHUYLER- SCOTT-STARK-TAZEWELL-WOODFORD- 356 PM CDT SUN JUL 10 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS...NORTH CENTRAL ILLINOIS AND WEST CENTRAL ILLINOIS. .DAY ONE...TONIGHT A FEW STRONG TO POTENTIALLY SEVERE THUNDERSTORMS WITH STRONG WINDS AND HAIL WILL OCCUR MAINLY WEST OF THE ILLINOIS RIVER THROUGH SUNSET TODAY. FREQUENT LIGHTNING AND BRIEF HEAVY RAINS COULD ALSO OCCUR WITH THE STRONGER STORMS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SUNDAY ISOLATED THUNDERSTORMS WILL RETURN OVERNIGHT MONDAY NIGHT...WITH SCATTERED THUNDERSTORMS TUESDAY THROUGH WEDNESDAY NIGHT. THERE IS A SLIGHT RISK OF SEVERE STORMS LATE TUESDAY AFTERNOON INTO TUESDAY NIGHT NORTH OF PEORIA WITH DAMAGING WINDS AND LARGE HAIL POSSIBLE. THUNDERSTORM CHANCES RETURN TO THE AREA FRIDAY NIGHT THROUGH SUNDAY. IN ADDITION...AFTERNOON HEAT INDEX VALUES WILL REACH 95 TO 100 DEGREES MONDAY THROUGH WEDNESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED UNTIL SUNSET WEST OF THE ILLINOIS RIVER. 07
The Quad Cities radar (KDVN), 76 km away, was scanning. The volume nearest the first event began at 21:05 UTC.
1 thunderstorm wind. Local standard time, as filed.
Numerous tree branches and power lines were blown down around Galesburg.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2016Every state in 2016This day in weather historyWarnings in Illinois, July 2016
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: 646794.