An isolated thunderstorm caused a tree to fall onto a home east of Urbana in Champaign County.
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The episode as NWS ILX wrote it up.
An isolated thunderstorm caused a tree to fall onto a home east of Urbana in Champaign County.
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 25, 1:54 PM CST, 3 hours 14 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LINCOLN IL 254 PM CDT SAT JUL 25 2015 .SHORT TERM...(TONIGHT) ISSUED AT 254 PM CDT SAT JUL 25 2015 19Z/2PM VISIBLE SATELLITE IMAGERY IS BEGINNING TO SHOW A CU-FIELD DEVELOPING ALONG A WEAKENING FRONTAL BOUNDARY ACROSS NORTHERN ILLINOIS. THIS AREA HAS BECOME MODERATELY UNSTABLE AND UNCAPPED...AS EVIDENCED BY LATEST MESOANALYSIS INDICATING SBCAPES OF 3000-4000J/KG FROM NEAR CHICAGO WESTWARD TO MOLINE. RAPID REFRESH CONTINUES TO SUGGEST WIDELY SCATTERED THUNDERSTORMS DEVELOPING ALONG THE FRONT AFTER 3 PM THEN TRACKING E/SE THROUGH THE EARLY EVENING HOURS BEFORE DISSIPATING AFTER SUNSET. FURTHER SOUTH...AIRMASS REMAINS CAPPED DUE TO AMPLE CLOUD DEBRIS FROM DECAYING MORNING MCS. AS A RESULT...HAVE OPTED TO GO WITH A DRY FORECAST ACROSS MUCH OF THE KILX CWA FOR THE REMAINDER OF THE AFTERNOON AND EVENING...WITH ONLY SLIGHT CHANCE POPS ALONG/NORTH OF THE I-74 CORRIDOR IN CLOSER PROXIMITY TO THE BOUNDARY. ONCE ANY EARLY EVENING CONVECTION FADES...EMPHASIS WILL SHIFT TO THE CENTRAL PLAINS WHERE YET ANOTHER NOCTURNAL MCS IS EXPECTED TO FORM. 850MB JET STREAK WILL DEVELOP ACROSS NEARLY THE EXACT SAME LOCATION AS IT DID LAST NIGHT...BASICALLY FROM THE TEXAS PANHANDLE NORTHEASTWARD INTO EASTERN NEBRASKA. A CLUSTER OF STORMS WILL DEVELOP ALONG THE NOSE OF THE JET WHERE IT INTERSECTS THE TRAILING END OF THE FRONTAL BOUNDARY...PRIMARILY ACROSS EASTERN SOUTH DAKOTA/NEBRASKA. THESE STORMS WILL THEN TRACK E/SE TOWARD THE MISSISSIPPI RIVER AFTER MIDNIGHT. SCENARIO MAY BE VERY SIMILAR TO WHAT HAPPENED THIS MORNING...WITH THE LATEST RAPID REFRESH SHOWING STORMS CROSSING THE RIVER INTO WEST-CENTRAL ILLINOIS TOWARD DAWN. HAVE THEREFORE CARRIED HIGH CHANCE POPS ALONG/SOUTHWEST OF A GALESBURG TO TAYLORVILLE LINE AFTER 3 AM...WITH ONLY SLIGHT CHANCES FURTHER EAST. DUE TO THE HIGHER DEWPOINT AIR IN PLACE ACROSS THE REGION...OVERNIGHT LOWS WILL BE WARMER THAN IN RECENT NIGHTS...WITH READINGS ONLY DROPPING INTO THE UPPER 60S AND LOWER 70S. && .LONG TERM...(SUNDAY THROUGH SATURDAY) ISSUED AT 254 PM CDT SAT JUL 25 2015 AN MCS WILL ONCE AGAIN COME INTO CENTRAL IL DURING THE MORNING TO DIE...JUST LIKE TODAY. HOWEVER...THIS ONE WILL CONTINUE MORE INTO THE REST OF CENTRAL IL...UNLIKE THE ONE THIS MORNING. SO WILL HAVE POPS THROUGHOUT THE CWA TOMORROW. MODELS SHOW SOME UNCERTAINTY WITH THE TRACK OF THE MCS AND HOW QUICKLY IT WILL DISSIPATE SO WILL KEEP POPS BELOW LIKELY CATEGORY BUT KEEP A HIGH CHANCE OF POPS...MAINLY IN THE WEST AND SOUTHWEST. WILL HAVE SLIGHTLY LOWER POPS FOR THE AFTERNOON AS MCS SHOULD BE SIGNIFICANTLY DIMINISHED...THOUGH ANY LEFTOVER OUTFLOW BOUNDARY WILL BE A FOCUS POSSIBLE REDEVELOPMENT OF CONVECTION. COULD BE SOME CONVECTION FOR MON THROUGH TUE...BUT LOOKS LIKE UPPER LEVEL RIDGE WILL BE BUILDING EARLY NEXT WEEK AND THIS BUT A CAP ON CONVECTION. HOWEVER...WILL KEEP SLIGHT CHANCE OF PCPN FOR MON THROUGH TUE AS MODELS STILL TRY TO DEVELOP SCATTERED CONVECTION IN THE AREA. WITH BUILDING RIDGE EARLY NEXT WEEK...TEMPS WILL GET QUITE WARM WITH AROUND 90 AND HIGHER EXPECTED FOR MON AND TUE. THIS WILL COMBINE WITH MID TO UPPER 70 DWPTS...RESULTING IN HEAT INDEX READINGS OF 100 TO AROUND 110...THE HIGHEST BEING TUE. CLOUDS AND PCPN TOMORROW WILL PRECLUDE ANY ADVISORY TOMORROW...BUT ONE MIGHT BE NEEDED FOR MON AND DEFINITELY FOR TUE. A BETTER DEFINED FRONTAL SYSTEM WILL MOVE THROUGH THE AREA WED AND WED NIGHT...BREAKING DOWN THE UPPER LEVEL RIDGE FOR SHORT PERIOD OF TIME. CONVECTION IS EXPECT SO WILL HAVE CHANCE POPS FOR WED OVER THE WHOLE AREA AND THEN JUST IN THE SOUTHEAST FOR WED NIGHT...GIVEN HOW FAST THIS SYSTEM MOVES THROUGH. BEHIND THIS SYSTEM HIGH PRESSURE WILL RETURN TO THE AREA FOR THE REST OF THE WEEK. THIS HIGH PRESSURE WILL BE AROUND FOR A LITTLE BIT LONGER AND APPEARS TO BE DRIER WITH DEWPOINTS AND COOLER. WED DOES LOOK WARM AND HUMID AGAIN AHEAD OF THE FRONT AND HEAT INDEX VALUES WILL BE AROUND 95 TO OVER 100 AGAIN...MEANING AN ADVISORY MAY BE REQUIRED IN THE EAST AND SOUTHEAST WED. HIGH TEMPS PAST WED LOOK TO BE IN THE LOWER TO MIDDLE 80S. && .AVIATION...(FOR THE 18Z TAFS THROUGH 18Z SUNDAY AFTERNOON) ISSUED AT 1240 PM CDT SAT JUL 25 2015 MID/HIGH OVERCAST FROM DECAYING EARLY MORNING STORM COMPLEX REMAINS IN PLACE ACROSS CENTRAL ILLINOIS EARLY THIS AFTERNOON. MEANWHILE...SCT LOWER CLOUDS AT AROUND 1500-2500FT ARE BEGINNING TO DEVELOP ACROSS NORTH-CENTRAL ILLINOIS AHEAD OF A WEAKENING COLD FRONT. DUE TO STABILIZING INFLUENCE OF MORNING CLOUDS...HIGH-RES MODELS GENERALLY KEEP MUCH OF THE AREA DRY THIS AFTERNOON. THE EXCEPTION IS ALONG THE WEAK FRONT TO THE NORTH...WHERE THE RAPID REFRESH SUGGESTS WIDELY SCATTERED CONVECTION WILL DEVELOP LATE THIS AFTERNOON INTO THE EARLY EVENING. HAVE THEREFORE INCLUDED A VCTS AT THE I-74 TERMINALS BETWEEN 21Z AND 04Z. MAIN AVIATION FORECAST CONCERN WILL BE THE DEVELOPMENT AND TRACK OF ANOTHER NOCTURNAL MCS TONIGHT. THIS SYSTEM WILL LIKELY DEVELOP IN NEARLY THE SAME PLACE AS LAST NIGHTS SYSTEM DID...PERHAPS A BIT FURTHER NORTH ACROSS EASTERN SOUTH DAKOTA/NEBRASKA. RAPID REFRESH SHOWS THE STORM COMPLEX APPROACHING THE MISSISSIPPI RIVER BY 10Z...THEN LIKELY SPILLING E/SE INTO CENTRAL ILLINOIS IN A DISSIPATING STAGE SUNDAY MORNING. HAVE INCLUDED VCTS AT BOTH KPIA AND KSPI AFTER 13Z ACCORDINGLY...BUT HAVE MAINTAINED A DRY FORECAST FURTHER EAST AT THE REMAINING SITES DUE TO UNCERTAINTIES WITH THE TRACK AND SPEED OF DISSIPATION OF THE EARLY MORNING CONVECTION. WINDS WILL BE QUITE LIGHT THROUGH THE ENTIRE PERIOD...SWITCHING TO N/NE AS THE FRONT SAGS THROUGH THE AREA BY SUNDAY MORNING. && .ILX WATCHES/WARNINGS/ADVISORIES... NONE. && SHORT TERM...BARNES LONG TERM...AUTEN AVIATION...BARNES
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LINCOLN IL 320 PM CDT SAT JUL 25 2015 ILZ036-040>042-047>052-261100- CASS-CHRISTIAN-FULTON-LOGAN-MASON-MENARD-MORGAN-SANGAMON-SCHUYLER- SCOTT- 320 PM CDT SAT JUL 25 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS AND WEST CENTRAL ILLINOIS. .DAY ONE...TONIGHT A COMPLEX OF THUNDERSTORMS WILL DEVELOP ACROSS NEBRASKA THIS EVENING...THEN WILL TRACK EAST-SOUTHEAST OVERNIGHT. THESE STORMS MAY SPILL INTO WEST-CENTRAL ILLINOIS ALONG AND SOUTH OF A MACOMB TO LINCOLN LINE AFTER 3 AM. WIDESPREAD SEVERE WEATHER IS NOT EXPECTED...HOWEVER GUSTY WINDS AND LOCALLY HEAVY RAINFALL WILL BE POSSIBLE. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THE THUNDERSTORM COMPLEX WILL WEAKEN AS IT TRACKS FURTHER INTO CENTRAL ILLINOIS SUNDAY MORNING. ADDITIONAL THUNDERSTORMS WILL DEVELOP SUNDAY AFTERNOON AND NIGHT ALONG A NEARLY STATIONARY FRONTAL BOUNDARY. WIDESPREAD SEVERE WEATHER IS NOT ANTICIPATED. HEAT AND HUMIDITY WILL BUILD ACROSS THE AREA MONDAY THROUGH WEDNESDAY...WITH HEAT INDEX VALUES EXCEEDING 100 DEGREES EACH DAY. THE HOTTEST DAY WILL BE TUESDAY...WHEN THE HEAT INDEX MAY CLIMB INTO THE 105 TO 110 DEGREE RANGE. FLOODING WILL CONTINUE ALONG MUCH OF THE ILLINOIS RIVER THROUGH THE PERIOD...HOWEVER IT SHOULD SUBSIDE AT HENRY AND POINTS NORTH BY TUESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. ILZ027>031-037-038-043>046-053>057-061>063-066>068-071>073-261100- CHAMPAIGN-CLARK-CLAY-COLES-CRAWFORD-CUMBERLAND-DE WITT-DOUGLAS- EDGAR-EFFINGHAM-JASPER-KNOX-LAWRENCE-MACON-MARSHALL-MCLEAN- MOULTRIE-PEORIA-PIATT-RICHLAND-SHELBY-STARK-TAZEWELL-VERMILION- WOODFORD- 320 PM CDT SAT JUL 25 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS...EAST CENTRAL ILLINOIS...NORTH CENTRAL ILLINOIS...SOUTH CENTRAL ILLINOIS...SOUTHEAST ILLINOIS AND WEST CENTRAL ILLINOIS. .DAY ONE...TONIGHT ISOLATED THUNDERSTORMS WILL DEVELOP AHEAD OF A WEAK COLD FRONT ALONG AND NORTH OF A CLINTON TO PARIS LINE THIS EVENING. A FEW STORMS MAY ALSO PUSH IN FROM THE WEST TOWARD DAWN SUNDAY...HOWEVER SEVERE WEATHER IS NOT EXPECTED. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY SCATTERED THUNDERSTORMS WILL DEVELOP SUNDAY AND SUNDAY NIGHT ALONG A NEARLY STATIONARY FRONTAL BOUNDARY. WIDESPREAD SEVERE WEATHER IS NOT ANTICIPATED. HEAT AND HUMIDITY WILL BUILD ACROSS THE AREA MONDAY THROUGH WEDNESDAY...WITH HEAT INDEX VALUES EXCEEDING 100 DEGREES EACH DAY. THE HOTTEST DAY WILL BE TUESDAY...WHEN THE HEAT INDEX MAY CLIMB INTO THE 105 TO 110 DEGREE RANGE. FLOODING WILL CONTINUE ALONG THE WABASH RIVER THROUGH THE PERIOD. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. BARNES
The Lincoln radar (KILX), 103 km away, was scanning. The volume nearest the first event began at 23:08 UTC.
1 thunderstorm wind. Local standard time, as filed.
A tree was blown over onto a house.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Illinois in 2015Every state in 2015This day in weather historyWarnings in Illinois, July 2015
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: 593148.