2 hail, 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 Oct 14, 2:10 AM CST, 9 hours 57 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE CHICAGO IL 310 AM CDT SUN OCT 14 2001 RADAR INDICATES MAIN AREA OF RAIN HAS MOVED OUT OF AREA EXCEPT STILL LINGERING IN NW IN. ANOTHER BATCH OF SHOWERS NE ARK AND SE MO ASSCD WITH VORT MAX LIFTING NNE BUT SHOULD STAY SE OF FORECAST AREA. SOME CLEARING SEEN IN IR SATELLITE IMAGRY OVER WEST CENTRAL IL AND MUCH OF MO AND IA...AND SFC OBS REPORTING CLOUDS SCATTERING BELOW 12K FT OVER NE IL. MAY SEE SOME SUNSHINE THIS MORNING BUT WITH STRONG CAA AND VERY STEEP LAPSE RATES...CLOUDS WILL DEVELOP RAPIDLY. ENOUGH INSTABILITY AND TROFINESS FOR SOME SCATTERED AFTERNOON SHOWERS. FWC AND MAV GUIDANCE ONLY PUTTING OUT ABOUT 15 KNOTS OF WIND THIS AFTERNOON BUT AVN AND ETA BOTH INDICATING 30 TO 35 KNOTS AT 850MB. THINK ENOUGH OF THIS WILL MIX DOWN TO CONTINUE FORECAST OF 20 TO 30 MPH IN ZONES. NEXT SPOKE ROTATING THROUGH BROAD UPPER TROF MON AFTERNOON AND EVENING. MAIN ENERGY GOING THROUGH OH RIVER VALLEY AND MOST PRECIP SHOULD STAY SOUTH OF FORECAST AREA. WILL KEEP CHANCE OF SHOWERS IN FOR AFTERNOON AND EVENING. FINALLY DRYING OUT TUE BUT VERY CHILLY WITH -4 TO -6 TEMPS AT 850 MB. WITH NW FLOW...ANY LAKE EFFECT WILL BE EAST OF FORECAST AREA. THEN RIDGE BUILDS IN WITH BIG WARM UP FOR MID WEEK. .CHI...GALE WARNING LAKE MICHIGAN. ALLSOPP
The Chicago radar (KLOT), 81 km away, was scanning. The volume nearest the first event began at 18:10 UTC.
2 hail. Local standard time, as filed.
Golf ball size hail covered Interstate 57 at mile marker 287 forcing numerous cars to the side of the road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2001Every state in 2001This day in weather historyWarnings in Illinois, October 2001
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: 5270770, 5270771.