Low pressure tracking from Iowa into the Great Lakes brought showers and thunderstorms to central Illinois during the morning of May 26th. One of the cells produced minor wind damage in Schuyler County.
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The episode as NWS ILX wrote it up.
Low pressure tracking from Iowa into the Great Lakes brought showers and thunderstorms to central Illinois during the morning of May 26th. One of the cells produced minor wind damage in Schuyler 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 May 26, 6:08 AM CST, 1 hour 2 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LINCOLN IL 708 AM CDT TUE MAY 26 2015 .SHORT TERM...(TODAY) ISSUED AT 343 AM CDT TUE MAY 26 2015 LOW CLOUDS HAVE BEEN ADVECTING INTO THE AREA AND WILL REMAIN OVER THE AREA THIS MORNING. LOWER CLOUDS INDICATING LOTS OF LOW LEVEL MOISTURE BEING ADVECTED INTO THE AREA AHEAD OF THE WEATHER SYSTEM THAT STILL IS WEST OF THE CWA. RADAR AND SATELLITE LOOPS SHOW SEVERAL MCVS WEST OF THE AREA WITH SOME SHOWERS MOVING NORTH THROUGH SOUTHEASTERN MO. MODELS CONTINUE TO INDICATE PCPN REDEVELOPING TODAY. CLOUDS WILL LIMIT THE DEGREE OF INSTABILITY BUT STILL EXPECTING ENOUGH FOR THUNDERSTORMS, JUST NOT ENOUGH FOR ANYTHING SEVERE, WHICH SHOULD BE EAST AND SOUTHEAST OF THE AREA WHERE LESS CLOUDS WILL BE. CLOUD COVER WILL ALSO TEMPER WARM UP AS WELL SO ONLY EXPECTING UPPER 70S FOR HIGHS WHICH IS MUCH LESS THAN PAST TWO DAYS. POPS WILL BE A GRADUAL INCREASE TODAY REACHING LIKELY LATER THIS MORNING AND THEN MOVING NORTH AND EAST THIS AFTERNOON, BECOMING CHANCE CATEGORY BY LATE AFTERNOON AS THE PCPN MOVES EAST OF THE AREA. SOUTHERLY WINDS WILL BE A TAD GUSTY AGAIN, JUST NOT AS MUCH AS YESTERDAY. .LONG TERM...(TONIGHT THROUGH MONDAY) ISSUED AT 343 AM CDT TUE MAY 26 2015 UNTIL THE UPPER WAVE PULLS INTO THE GREAT LAKES REGION, LINGERING POPS WILL REMAIN OVER THE FA FOR THIS EVENING. BETTER CHANCES WILL REMAIN TO THE EAST OVERNIGHT. REMAINS OF THE FRONT WILL STALL OUT ALONG THE OHIO RIVER VALLEY AND PROVIDE A BIT OF FOCUS FOR ANOTHER PIECE OF ENERGY EJECTING OUT OF THE SOUTHWEST. MODELS DIFFERING WITH THE NORTHERLY EXTENT OF THE PRECIP, BUT LAST FEW RUNS BRINGING IN SOME PRECIPITATION FOR WEDNESDAY IN THE SOUTHEAST. NAM IS A LITTLE MORE WIDESPREAD, BUT CONCENTRATING THE POPS TO THE SOUTH AND EAST FOR NOW. TIMING ISSUES REMAIN IN PLACE FOR THIS SYNOPTIC RUN FOR THE NEXT SYSTEM QUICK ON THE HEELS AS THE DEEP WAVE OVER THE SW STARTS TO MOVE OUT INTO THE PLAINS. CONVECTION AND PRECIP STARTS TO SPREAD OVER THE EASTERN HALF OF THE COUNTRY IN THE MODELS WITH WEAK SOUTHWESTERLY FLOW ALOFT SHIFTING TO WEAK FLOW OVERALL. WARM AND MUGGY CONDITIONS CONTINUE IN A MORE SUMMERLIKE AIRMASS THROUGHOUT THE WEEK...BUT THAT NEXT SYSTEM WILL BRING A COLD FRONT INTO THE REGION FOR THE FIRST HALF OF THE WEEKEND TO FOCUS THE RAIN, WITH A COOLER AIRMASS BEHIND IT DROPPING THE TEMPS FOR THE WEEKEND OUT OF THE 80S FOR A COUPLE DAYS. && .AVIATION...(FOR THE 12Z TAFS THROUGH 12Z WEDNESDAY MORNING) ISSUED AT 708 AM CDT TUE MAY 26 2015 LOW STRATUS HAS OVERSPREAD ALL TAF SITES THIS MORNING. THIS LOW STRATUS LOOKS TO REMAIN OVER ALL SITES UNTIL SOMETIME THIS AFTERNOON AFTER A NARROW BAND OF SHOWERS MOVES THROUGH THE AREA. SPI IS THE ONLY ONE AT MVFR STATUS RIGHT NOW. ALL OTHER TAF SITES ARE MVFR. BY THIS AFTERNOON ALL SITES SHOULD BE MVFR WITH HIGHER CIGS AROUND 2.5KFT. SHOWERS WILL BE POSSIBLE THIS MORNING AS RADAR LOOPS SHOWS. THEN HAS THE DAY HEATS UP THUNDERSTORMS WILL BE POSSIBLE. WILL GO WITH VCTS FOR NOW GIVEN UNCERTAINTY OF LOCATION OF ANY THUNDERSTORMS. THESE SHOULD END SOMETIME EARLY THIS EVENING. SKIES SHOULD THEN BE VFR AS THE AREA SHOULD BE WELL IN THE WARM SECTOR. THERE COULD BE MORE PCPN OVERNIGHT TONIGHT...BUT LOTS OF UNCERTAINTY THERE SO WILL NOT INCLUDE AT THIS TIME. WINDS WILL BECOME SOUTHERLY WITH SOME GUSTINESS THIS AFTERNOON. && .ILX WATCHES/WARNINGS/ADVISORIES... NONE. && SHORT TERM...AUTEN LONG TERM...HJS AVIATION...AUTEN
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LINCOLN IL 754 AM CDT TUE MAY 26 2015 ILZ027>031-036>038-040>044-047>054-061-066-071-271100- CASS-CHRISTIAN-CLAY-DE WITT-EFFINGHAM-FULTON-KNOX-LOGAN-MACON- MARSHALL-MASON-MCLEAN-MENARD-MORGAN-MOULTRIE-PEORIA-PIATT- SANGAMON-SCHUYLER-SCOTT-SHELBY-STARK-TAZEWELL-WOODFORD- 754 AM CDT TUE MAY 26 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS...NORTH CENTRAL ILLINOIS...SOUTH CENTRAL ILLINOIS AND WEST CENTRAL ILLINOIS. .DAY ONE...TODAY AND TONIGHT A LINE OF SHOWERS AND THUNDERSTORMS WILL DEVELOP IN EASTERN MISSOURI AND WESTERN ILLINOIS AND MOVE INTO THE AREA LATE THIS MORNING AND THROUGH THIS AFTERNOON. AT THIS TIME...SEVERE WEATHER IS NOT EXPECTED WITH ANY OF THESE STORMS. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY ADDITIONAL THUNDERSTORMS ARE LIKELY WEDNESDAY AND WEDNESDAY NIGHT...THEN AGAIN THURSDAY NIGHT INTO THE WEEKEND. AT THIS TIME...SEVERE WEATHER IS NOT EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED THROUGH TONIGHT. ILZ045-046-055>057-062-063-067-068-072-073-271100- CHAMPAIGN-CLARK-COLES-CRAWFORD-CUMBERLAND-DOUGLAS-EDGAR-JASPER- LAWRENCE-RICHLAND-VERMILION- 754 AM CDT TUE MAY 26 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL ILLINOIS AND SOUTHEAST ILLINOIS. .DAY ONE...TODAY AND TONIGHT A LINE OF SHOWERS AND THUNDERSTORMS WILL DEVELOP IN EASTERN MISSOURI AND WESTERN ILLINOIS AND MOVE INTO THE AREA LATE THIS MORNING AND THROUGH THIS AFTERNOON. THERE IS A SLIGHT RISK THAT SOME OF THESE STORMS COULD BECOME SEVERE AS THEY MOVE INTO EASTERN ILLINOIS THIS AFTERNOON. DAMAGING WINDS WILL BE THE PRIMARY SEVERE WEATHER RISK. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY ADDITIONAL THUNDERSTORMS ARE LIKELY WEDNESDAY AND WEDNESDAY NIGHT...THEN AGAIN THURSDAY NIGHT INTO THE WEEKEND. AT THIS TIME...SEVERE WEATHER IS NOT EXPECTED. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED THROUGH TONIGHT. AUTEN
The Lincoln radar (KILX), 111 km away, was scanning. The volume nearest the first event began at 13:10 UTC.
1 thunderstorm wind. Local standard time, as filed.
A tree was blown down on Route 101 just west of Littleton.
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, May 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: 578648.