A cold front well west of the Mississippi River triggered a line of thunderstorms that pushed into west-central Illinois and dissipated during the evening of June 23rd. The gust front associated with these dying storms pushed through Schuyler County, resulting in a few downed tree branches.
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The episode as NWS ILX wrote it up.
A cold front well west of the Mississippi River triggered a line of thunderstorms that pushed into west-central Illinois and dissipated during the evening of June 23rd. The gust front associated with these dying storms pushed through Schuyler County, resulting in a few downed tree branches.
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 Jun 23, 5:55 PM CST, 1 hour 15 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LINCOLN IL 655 PM CDT TUE JUN 23 2009 .DISCUSSION... ISSUED 300 PM CDT TUE JUN 23 2009 SHORT TERM...TONIGHT THROUGH FRIDAY... UPPER RIDGE CONTINUES TO DOMINATE THE WEATHER OVER THE AREA. THUNDERSTORM COMPLEX OVER IOWA IS FORECAST BY THE SHORT RANGE MODELS TO TAKE A HARD DIVE SOUTH THIS EVENING WITH PRECIPITATION REMAINING JUST TO THE WEST OF OUR FORECAST AREA TONIGHT. PROFILER/RADAR WINDS INDICATE LIGHT NORTHEASTERLY FLOW IN THE LOWER LAYERS...AND THE CUMULIFORM DEBRIS FROM PREVIOUS STORMS OVER NORTHEASTERN MISSOURI IS MOVING STRAIGHT SOUTH. HOWEVER IT IS HARD TO IGNORE STORMS IN THE NORTHERN HALF OF IOWA WITHIN NORTHWESTERLY FLOW ALOFT. WILL GO AHEAD AND INDICATE SLIGHT CHANCE POPS NORTHWEST OF THE ILLINOIS RIVER TONIGHT. RIDGE IS FORECAST TO NUDGE WESTWARD ON WED...WITH ONE MORE DAY OF WIDESPREAD 100+ HEAT INDICES BEFORE THE COLD FRONT MOVES IN WEDNESDAY EVENING. THUNDERSTORM CHANCES WILL GO UP WEDNESDAY NIGHT AS CONVECTION ALONG THE FRONT OVER IOWA MOVES SOUTHEASTWARD. WILL CONTINUE WITH CHANCE POPS FOR THURSDAY AS THE FRONT GOES THROUGH... BUT THESE MAY BE RAISED IF COVERAGE ENDS UP AS MUCH AS EXPECTED. HIGH PRESSURE WILL THEN MOVE IN BEHIND THE FRONT AND PROVIDE COOLER TEMPERATURES AND DRIER CONDITIONS. LONG TERM...SATURDAY THROUGH TUESDAY... THE NEXT UPPER TROUGH IS FORECAST TO MOVE ACROSS THE U.S./CANADIAN BORDER LATE THIS WEEK AND PUSH ANOTHER COLD FRONT THROUGH ILLINOIS SATURDAY/EARLY SUNDAY. AFTER ANOTHER ROUND OF CONVECTION WITH THIS FEATURE...THE LONGER RANGE MODELS ARE IN AGREEMENT THAT THE OVERALL UPPER PATTERN WILL EVOLVE INTO A RIDGE WEST/TROUGH EAST. THIS SHOULD ALLOW THE HIGH PRESSURE IN THE WAKE OF THE WEEKEND FRONT TO PUSH SOUTHEASTWARD AND DRY THINGS OUT AGAIN FOR THE FIRST PART OF NEXT WEEK. 04 && .AVIATION... ISSUED 655 PM CDT TUE JUN 23 2009 GENERALLY QUIET/VFR AVIATION WEATHER CONDITIONS EXPECTED THROUGH THE 00Z TAF PERIOD. ON THE WHOLE...HIGH PRESSURE WILL REMAIN IN CONTROL WITH WINDS REMAINING UNDER 10 KTS AND MINIMAL CLOUD COVER. ONE THING THANT WILL NEED TO BE MONITORED OVER THE NEXT FEW HOURS IS THE CONVECTIVE COMPLEX OVER IOWA. THIS SYSTEM IS TRENDING MORE SOUTHERLY WITH TIME AND THIS TREND SHOULD CONTINUE. THIS TRACK WILL KEEP THE SYSTEM MAINLY WEST OF THE TERMINALS. ALSO...AN ISOLATED THUNDERSTORM HAS POPPED UP IN NORTHERN MCLEAN COUNTY AND MAY IMPACT KBMI TOWARD 9 PM IF IT HOLDS TOGETHER. BAK && .ILX WATCHES/WARNINGS/ADVISORIES... HEAT ADVISORY UNTIL 7 PM CDT WEDNESDAY FOR ILZ027>031-036>038- 040>057-061>063-066>068-071>073. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LINCOLN IL 317 PM CDT TUE JUN 23 2009 ILZ027>031-036-037-040-041-241100- FULTON-KNOX-MARSHALL-MASON-PEORIA-SCHUYLER-STARK-TAZEWELL- WOODFORD- 317 PM CDT TUE JUN 23 2009 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT WEDNESDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS. .DAY ONE...TONIGHT A THUNDERSTORM COMPLEX OVER NORTHERN IOWA THIS AFTERNOON WILL WEAKEN AS IT MOVES SOUTHEAST TOWARD THE REGION. THERE WILL BE A SLIGHT CHANCE THAT A FEW STORMS MAY MAKE IT AS FAR SOUTHEAST AS THE ILLINOIS RIVER LATE TONIGHT BEFORE DISSIPATING. SEVERE WEATHER IS NOT EXPECTED WITH THESE STORMS. HOT AND HUMID CONDITIONS WILL PERSIST THROUGH THE EVENING WITH HEAT INDEX READINGS NEAR 100. THE ILLINOIS RIVER FROM HAVANA DOWNSTREAM WILL REMAIN ABOVE FLOOD STAGE THROUGH THE COMING WEEKEND. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY PERIODIC DISTURBANCES WILL MOVE THROUGH THE REGION INTO THE WEEKEND BRING OCCASIONAL CHANCES FOR THUNDERSTORMS WEDNESDAY AND THURSDAY AND THEN AGAIN ON SATURDAY. AT THIS TIME...SEVERE WEATHER IS NOT EXPECTED. HOT AND HUMID CONDITIONS WILL PERSIST THROUGH WEDNESDAY WITH HEAT INDEX READINGS BETWEEN 100 AND 105 DEGREES ON WEDNESDAY AFTERNOON. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. ILZ038-042>046-048-051>057-061>063-066>068-241100- CHAMPAIGN-CHRISTIAN-CLARK-COLES-CRAWFORD-CUMBERLAND-DE WITT- DOUGLAS-EDGAR-EFFINGHAM-JASPER-LOGAN-MACON-MCLEAN-MENARD-MOULTRIE- PIATT-SANGAMON-SHELBY-VERMILION- 317 PM CDT TUE JUN 23 2009 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT WEDNESDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS...EAST CENTRAL ILLINOIS AND SOUTHEAST ILLINOIS. .DAY ONE...TONIGHT HOT AND HUMID CONDITIONS WILL PERSIST THROUGH THE EVENING WITH HEAT INDEX READINGS NEAR 100. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY PERIODIC DISTURBANCES WILL MOVE THROUGH THE REGION INTO THE WEEKEND BRING OCCASIONAL CHANCES FOR THUNDERSTORMS WEDNESDAY AND THURSDAY AND THEN AGAIN ON SATURDAY. AT THIS TIME...SEVERE WEATHER IS NOT EXPECTED. HOT AND HUMID CONDITIONS WILL PERSIST THROUGH WEDNESDAY WITH HEAT INDEX READINGS BETWEEN 100 AND 105 DEGREES ON WEDNESDAY AFTERNOON. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. ILZ071>073-241100- CLAY-LAWRENCE-RICHLAND- 317 PM CDT TUE JUN 23 2009 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT WEDNESDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST ILLINOIS. .DAY ONE...TONIGHT HOT AND HUMID CONDITIONS WILL PERSIST THROUGH THE EVENING WITH HEAT INDEX READINGS NEAR 100. THE LITTLE WABASH RIVER AT CLAY CITY AND THE EMBARRAS RIVER AT LAWRENCEVILLE WILL REMAIN IN FLOOD THROUGH WEDNESDAY. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY PERIODIC DISTURBANCES WILL MOVE THROUGH THE REGION INTO THE WEEKEND BRING OCCASIONAL CHANCES FOR THUNDERSTORMS WEDNESDAY AND THURSDAY AND THEN AGAIN ON SATURDAY. AT THIS TIME...SEVERE WEATHER IS NOT EXPECTED. HOT AND HUMID CONDITIONS WILL PERSIST THROUGH WEDNESDAY WITH HEAT INDEX READINGS BETWEEN 100 AND 105 DEGREES ON WEDNESDAY AFTERNOON. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. ILZ047-049-050-241100- CASS-MORGAN-SCOTT- 317 PM CDT TUE JUN 23 2009 ...HEAT ADVISORY IN EFFECT UNTIL 7 PM CDT WEDNESDAY... THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS. .DAY ONE...TONIGHT HOT AND HUMID CONDITIONS WILL PERSIST THROUGH THE EVENING WITH HEAT INDEX READINGS NEAR 100. THE ILLINOIS RIVER WILL REMAIN IN FLOOD FROM HAVANA DOWNSTREAM THROUGH THE WEEKEND. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY PERIODIC DISTURBANCES WILL MOVE THROUGH THE REGION INTO THE WEEKEND BRING OCCASIONAL CHANCES FOR THUNDERSTORMS THURSDAY AND THEN AGAIN ON SATURDAY. AT THIS TIME...SEVERE WEATHER IS NOT EXPECTED. HOT AND HUMID CONDITIONS WILL PERSIST THROUGH WEDNESDAY WITH HEAT INDEX READINGS BETWEEN 100 AND 105 DEGREES ON WEDNESDAY AFTERNOON. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. BARKER
The Lincoln radar (KILX), 129 km away, was scanning. The volume nearest the first event began at 01:09 UTC.
1 thunderstorm wind. Local standard time, as filed.
Tree branches were blown down in the towns of Huntsville, Camden, and Rushville.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2009Every state in 2009This day in weather historyWarnings in Illinois, June 2009
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: 180544.