1 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 Paducah, KY wrote its last area forecast discussion before the first event at Aug 18, 12:20 PM CST, 4 hours 35 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE PADUCAH KY 120 PM CDT SAT AUG 18 2001 MAIN FORECAST CONCERN IS POTENTIAL FOR SEVERE THUNDERSTORMS THIS EVENING. THEREAFTER...A DRY WEEK IS SHAPING UP FOR THE FORECAST AREA. LATEST 18Z SURFACE ANALYSIS HAD LOW PRESSURE OVER SOUTHERN WISCONSIN WITH ANOTHER LOW DEVELOPING IN NORTHWEST ILLINOIS. FROM THE SECOND LOW...A WARM FRONT WAS EVIDENT ACROSS CENTRAL ILLINOIS AND INDIANA...WITH A COLD FRONT TRAILING SOUTHWEST ACROSS MISSOURI AND SOUTHEAST KANSAS. 12Z UPPER AIR ANALYSIS HAD A 564MB LOW OVER WESTERN WISCONSIN AND ASSOCIATED 50 KNOT JET DIVING SOUTHEAST ACROSS THE UPPER MIDWEST. AT MIDDAY...MOST OF THE FORECAST AREA WAS BASKING IN PLENTY OF SUNSHINE. THIS HAS HELPED TO BOOST TEMPERATURES INTO THE LOWER AND MIDDLE 80S...WITH MSAS LI/S OF -7 TO -9 OVER MUCH OF SOUTHERN ILLINOIS AND SOUTHEAST MISSOURI. THROUGH THE REST OF THE AFTERNOON...THE AIR MASS WILL CONTINUE TO DESTABILIZE. THIS COMBINED WITH INCREASING SHEAR AHEAD OF THE APPROACHING SHORTWAVE SHOULD GIVE THE REGION A ROUND OF STRONG AND SEVERE THUNDERSTORMS...NAMELY LATE THIS AFTERNOON AND THIS EVENING. BY MIDNIGHT...THE SURFACE COLD FRONT IS FORECAST TO STRETCH ACROSS SOUTHWEST INDIANA AND WESTERN KENTUCKY...WITH ANY LINGERING CONVECTION FROM THERE ON EASTWARD. SUNDAY LOOKS PARTLY SUNNY AS LOW-LEVEL MOISTURE LINGERS BEHIND THE DEPARTING LOW. FOR THE REST OF THE WEEK...MRF STILL TAKES THE RIDGE CURRENTLY OVER THE WESTERN U.S. AND SHIFTS IT EAST. SO A DRY WEEK IS EXPECTED WITH A MODERATION TO NEAR OR JUST ABOVE SEASONAL NORMS BY THE MIDDLE PART OF THE WEEK. DESPITE THE LATEST MRF RUN...WILL KEEP THE LATE WEEK PERIOD PARTLY CLOUDY BUT DRY SINCE THE EVENTUAL TRACK OF CHANTAL REMAINS UNCERTAIN AND IS SEVERAL DAYS OUT. MOS OUTPUT FROM BOTH NGM/AVN LOOK REASONABLE AND COMPARE FAVORABLY WELL...SO WILL FOLLOW CLOSELY. THE ONLY EXCEPTION TO THIS WOULD BE POPS FOR THIS EVENING...WHICH APPEAR TO BE UNDERDONE BY BOTH MODELS. FIRST-PERIOD ZONE BREAKOUT AND WORDING WILL LIKELY BE DICTATED BY WATCH BOXES IN EFFECT AT PRESS TIME. RIGHT NOW...PLAN TO EMPHASIZE SEVERE THREAT INCLUDING BOTH LARGE HAIL AND DAMAGING WINDS OVER THE ENTIRE AREA FOR THE EVENING HOURS. .PAH...NONE. RJP
ILZ075>078-080>094-INZ081-082-085>088-KYZ001>022-MOZ076-086-087-100- 107>112-114-181930- THUNDERSTORM OUTLOOK...UPDATED NATIONAL WEATHER SERVICE PADUCAH KY NOON CDT SAT AUG 18 2001 THIS OUTLOOK COVERS SOUTHEAST MISSOURI...WESTERN KENTUCKY...SOUTHERN ILLINOIS AND SOUTHWEST INDIANA...AND IS VALID UNTIL 600 AM SUNDAY. THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS OVER MOST OF SOUTHERN ILLINOIS AND SOUTHWEST INDIANA THIS AFTERNOON AND EVENING...GENERALLY NORTH OF A LINE FROM CARBONDALE ILLINOIS TO EVANSVILLE INDIANA. THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER THE REMAINDER OF EXTREME SOUTHERN ILLINOIS...SOUTHEAST MISSOURI...AND WESTERN KENTUCKY. A VIGOROUS UPPER LEVEL STORM SYSTEM OVER THE UPPER MIDWEST WILL MOVE SOUTHEAST TOWARD THE GREAT LAKES REGION TODAY AND TONIGHT. MEANWHILE...A COLD FRONT WILL MOVE SOUTHEAST ACROSS MISSOURI AND ILLINOIS TOWARD OUR REGION LATE TODAY. AHEAD OF THE COLD FRONT...THE AIRMASS WILL BECOME VERY UNSTABLE. SATELLITE SHOWS LITTLE IN THE WAY OF CLOUD COVER...WHICH WILL ALLOW FOR SIGNIFICANT DAYTIME HEATING AND DESTABILIZATION. IN ADDITION...STRONG UPPER LEVEL WINDS IN ASSOCIATION WITH THE STORM SYSTEM WILL SPREAD SOUTHEAST...INCREASING THE WIND SHEAR OVER THE AREA. SCATTERED THUNDERSTORMS WILL CONTINUE TO DEVELOP AHEAD OF THE COLD FRONT THIS AFTERNOON. THE ACTIVITY IS EXPECTED TO EVOLVE INTO A SQUALL LINE AND MOVE SOUTHEAST ACROSS THE FOUR STATE REGION DURING THE LATE DAY AND EVENING HOURS. DAMAGING WIND AND HAIL APPEAR TO BE THE MAIN THREATS. HOWEVER...THE DEGREE OF POTENTIAL INSTABILITY AND WIND SHEAR SUGGESTS THAT SUPERCELL THUNDERSTORMS ARE POSSIBLE. THIS COULD IN FACT INCREASE THE THREAT FOR ISOLATED TORNADOES. STORM MOTION IS EXPECTED TO BE EAST TO SOUTHEAST AT 35 TO 40 MPH. SPOTTER ACTIVATION WILL LIKELY BE REQUESTED LATER THIS AFTERNOON AND EVENING. CTN
The national radar mosaic for the moment the first event began.
1 hail. Local standard time, as filed.
Golf-ball size hail occurred in and near Waltonville in association with a severe supercell thunderstorm.
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, August 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: 5265542.