11 thunderstorm wind, as filed by the National Weather Service.
Every event with a place to put it. 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 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 Chicago, IL wrote its last area forecast discussion before the first event at Sep 13, 1:53 PM CST, 2 hours 12 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 253 PM CDT TUE SEP 13 2005 .DISCUSSION... SFC LOW OVER WESTERN WI WITH A TRAILING COLD FRONT EXTENDING SOUTH THRU CENTRAL IA THIS AFTERNOON. CONVECTION FIRING ALONG THIS FRONT AND LIFTING NE INTO SE MN AND WI. ANOTHER AREA OF CONVECTION ACROSS WESTERN IL LIFTING NE AND WILL REACH THE SW CWA LATE THIS AFTERNOON INTO THIS EVENING. WILL CARRY LIKELY POPS THRU EARLY MORNING...THEN DRY THINGS OUT OVERNIGHT. MOISTURE POOLING ALONG FRONT ALONG WITH PLENTY OF SUNSHINE...SO SVR THREAT WILL BE POSSIBLE THRU THE EVENING HRS. PRECIP ENDS OVERNIGHT WITH DRIER AND COOLER AIR MOVING INTO THE REGION WEDNESDAY AND THURSDAY. TYPICAL COOL SPOTS MAY DIP TO THE UPPER 40S FOR LOWS THURS MORNING AND MANY AREAS SEEING UPPER 40S BY FRI MORNING. DESPITE ANY RAIN THAT FALLS TONIGHT...GROUND IS VERY DRY WHICH SHOULD ALLOW TEMPS TO RISE NICELY DURING THE DAY AND COOL OFF NICELY AT NIGHT. MODELS HINT AT A RETURN TO PRECIP OVER THE WEEKEND. HAVE REMAINED DRY FOR NOW THOUGH THIS WILL NEED TO BE WATCHED AS 850MB TEMPS CONTINUE TO WARM. HIGH TEMPS BY THE WEEKEND BACK TO THE LOWER 80S THEN ANOTHER COLD FRONT...CHANCE OF PRECIP AND A COOL DOWN IN STORE SUNDAY NIGHT INTO MONDAY. && .AVIATION DISCUSSION FOR 18Z TAFS... ...ISSUED BY NWS LINCOLN IL... WARM ADVECTION SHOWERS AND THUNDERSTORMS FROM EARLIER THIS MORNING HAVE RAPIDLY DISSIPATED... ALTHOUGH THIS HAS RETARDED SFC HEATING A BIT WHICH HAS KEPT THE NOCTURNAL BOUNDARY LAYER FROM COMPLETELY MIXING OUT IN SOME LOCATIONS. EXPECT THAT WITH INCREASING SFC HEATING... WE WILL SOON MIX OUT... RESULTING IN GUSTY SOUTHWEST WINDS UP TO 25KT AT ALL SITES BY 19-20Z. MEANWHILE UPPER DISTURBANCE MOVING INTO CENTRAL IA/MO HAS RESULTED IN INCREASING THUNDERSTORM DEVELOPMENT WEST OF THE MISSISSIPPI THROUGH THE MORNING HOURS. THIS UPPER SYSTEM... COMBINED WITH A SFC COLD FRONT... WILL MOVE INTO THE AREA THIS EVENING... BRINGING THE CHANCE OF SHOWERS AND THUNDERSTORMS TO THE AREA. IN ADDITION... MODEST LOW LEVEL MOISTURE ADVECTION IS OCCURRING JUST AHEAD OF THE FRONT. HOWEVER... IT CONTINUES TO LOOK AS THROUGH CONVECTION WILL MOSTLY BE FOCUSED NORTH OF THE AREA ALONG WITH BEST DYNAMICS... BUT CONVECTIVE SHRA AND TSRA SHOULD STILL BE WIDESPREAD ENOUGH TO WARRANT BRINGING IT INTO THE TAF SITES AFTER 00Z. CEILINGS SHOULD BEGIN TO SCATTER OUT FAIRLY QUICKLY AFTER FROPA... BETWEEN 08 AND 12Z. LOW LEVEL DRY AIR MOVING IN SHOULD MITIGATE ANY WIDESPREAD VSBY RESTRICTIONS AFTER PRECIP MOVES OUT TONIGHT. && .LOT WATCHES/WARNINGS/ADVISORIES... .IL...NONE. .IN...NONE. .LK MI...NONE.
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL 430 PM CDT TUE SEP 13 2005 ILZ003>006-008-010>014-019>022-023-032-033-039-INZ001-002-010-011- 019-141100- WINNEBAGO-BOONE-MCHENRY-LAKE IL-OGLE-LEE-DE KALB-KANE-DU PAGE-COOK- LA SALLE-KENDALL-GRUNDY-WILL-KANKAKEE-LIVINGSTON-IROQUOIS-FORD- LAKE IN-PORTER-NEWTON-JASPER-BENTON- 430 PM CDT TUE SEP 13 2005 THIS PORTION OF THE HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL AND NORTHEAST ILLINOIS...AND NORTHWEST INDIANA. .DAY ONE... TONIGHT SHOWERS AND THUNDERSTORMS ARE SPREADING ACROSS NORTHERN ILLINOIS THIS AFTERNOON. THERE IS A SLIGHT RISK THAT SOME OF THE THUNDERSTORMS MAY BECOME SEVERE LATE THIS AFTERNOON AND EARLY THIS EVENING. THE GREATEST THREAT IS FROM HAIL AND DAMAGING WINDS. SEVERAL OF THE THUNDERSTORMS THAT ARE MOVING EAST FROM THE MISSISSIPPI RIVER HAVE A HISTORY OF SMALL HAIL AND DAMAGING WINDS. .DAYS TWO THROUGH SEVEN... WEDNESDAY THROUGH MONDAY THESE IS A CHANCE OF SOME LINGERING THUNDERSTORMS OVER THE NORTHWEST INDIANA COUNTIES THROUGH WEDNESDAY MORNING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NECESSARY TONIGHT. && COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO WEBPAGE: WEATHER.GOV/CHICAGO (LOWER CASE) LMZ740>745-766-141100- WINTHROP HARBOR IL TO MICHIGAN CITY IN- LAKE MICHIGAN- 430 PM CDT TUE SEP 13 2005 THIS PORTION OF THE HAZARDOUS WEATHER OUTLOOK IS FOR THE ILLINOIS AND INDIANA WATERS OF LAKE MICHIGAN. .DAY ONE... TONIGHT SHOWERS AND THUNDERSTORMS ARE LIKELY THIS EVENING. THERE IS A SLIGHT RISK THAT SOME OF THESE STORMS MAY BE SEVERE. THE MAIN THREAT IS STRONG WINDS. .DAYS TWO THROUGH SEVEN... WEDNESDAY THROUGH MONDAY THERE IS A CHANCE OF THUNDERSTORMS CONTINUING THROUGH THE EARLY MORNING HOURS ON WEDNESDAY. THE THUNDERSTORMS ARE NOT EXPECTED TO BE SEVERE. && COMPLETE FORECAST INFORMATION IS AVAILABLE ON THE NWS CHICAGO WEBPAGE: WEATHER.GOV/CHICAGO (LOWER CASE)
The Milwaukee radar (KMKX), 62 km away, was scanning. The volume nearest the first event began at 22:07 UTC.
11 thunderstorm wind. Local standard time, as filed.
Trees, tree limbs and power lines were blown down across parts of eastern Winnebago County. Two 12 inch diameter trees were blown down 4 miles northwest of Rockford.
Trees and power lines were blown down.
Tree limbs were blown down.
Large tree limbs were blown down, one fell on two cars.
Tree limbs and power lines were blown down.
A tree was blown down.
Tree limbs were blown down.
A large tree was blown down in a park along with several tree limbs.
Trees and power lines were blown down.
A tree fell onto a house.
Tree limbs were blown down across parts of north central McHenry County, including Harvard, Woodstock and McHenry.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2005Every state in 2005This day in weather historyWarnings in Illinois, September 2005
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: 5474489, 5474490, 5474491, 5474492, 5474493, 5474494, 5474495, 5474496, 5474570, 5474571, 5476179.