A departing low pressure system brought a period of wet snow to parts of central Illinois during the early morning hours of April 6th. Accumulations of between 1 and 3 inches were common along and north of the I-72 corridor.
Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 episode as NWS ILX wrote it up.
A departing low pressure system brought a period of wet snow to parts of central Illinois during the early morning hours of April 6th. Accumulations of between 1 and 3 inches were common along and north of the I-72 corridor. One person was killed in a car accident due to slushy roads in Woodford 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 Apr 6, 5:31 AM CST, 3 hours 19 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LINCOLN IL 631 AM CDT MON APR 6 2009 .DISCUSSION... ISSUED 314 AM CDT MON APR 6 2009 SFC AND UPPER LOW OFF TO THE EAST THIS MORNING...THOUGH ANOTHER WAVE DIGGING INTO THE TROF ON SAT IMAGERY...AND MODELS SHOWING YET ANOTHER ONE PUSHING INTO THE LONG WAVE TROF TONIGHT. THIS IS THE MAIN ISSUE FOR THE FORECAST IN THE SHORT TERM...AND WHETHER OR NOT IT WILL AFFECT THE END OF THE SNOW OVER THE FA. LIGHT SNOW STILL FALLING ACROSS THE NRN HALF OF THE STATE. NEXT FORECAST PROBLEM IS THE NEXT SYSTEM OUT OF THE DESERT SW ON THUR/FRI. MODELS IN PRETTY DECENT AGREEMENT OVERALL...IF NOT A LITTLE TOO QUICK ON THE ONSET OF PRECIP. GOING WITH A BLEND OVERALL. SHORT TERM...TODAY AND TOMORROW... ONCE AGAIN...NOT A LOT OF CHANGE IN THE BIG PICTURE FOR THE FORECAST. LOW PRESSURE SYSTEM PULLING OFF TO THE EAST...AND UPPER LOW LAGGING BEHIND SOMEWHAT. BUT THE LONGWAVE TROF STILL OVER THE NRN PLAINS...MIDWEST...AND GREAT LAKES. FA TO BE IN MID LEVEL CYCLONIC FLOW AS WELL AT LEAST THROUGH THE DAY AND INTO THE OVERNIGHT HOURS. KEEPING CLOUDS IN PLACE...AND CANNOT RULE OUT FLURRIES...AND THE OCCASIONAL SNOW SHOWER. KEEPING IN A LOW POP FOR THE DAY TO COMPENSATE FOR THE CHANCE OF SOME OF THE HEAVIER SHOWERS MEASURING. FOR THE MOST PART...WILL BE VERY LIGHT...AND THEN SCOUR OUT AFTER MIDNIGHT ENTIRELY AS DRY AIR RUSHES IN FROM CNTRL CANADA. MODELS PULL ANOTHER WAVE...CURRENTLY SOUTH OF HUDSON BAY...ACROSS THE FA TOMORROW...BUT WITH THE LOW LEVEL MOISTURE ALREADY ERODED CONSIDERABLY...THINK THERE IS LITTLE LEFT TO DO MUCH IN THE WAY OF MEASURABLE PRECIP. WILL HAVE TO KEEP AN EYE ON MOISTURE FIELDS FOR FLURRIES...BUT WITH MODELS HAVING A TENDENCY TO OVERDO THE LLVL RH...FEEL RATHER COMFORTABLE FOR NOW TO LEAVE IT OUT. TEMPERATURES PLUNGING INTO THE BITTERLY COLD FOR APRIL BEHIND THE EXITING LOW...WITH TEMPS IN THE LOW 30S AND UPPER 20S ON TAP FOR TONIGHT AND TOMORROW NIGHT. FREEZE WARNINGS LIKELY FOR THIS EVENING IN AREAS SOUTH OF INTERSTATE 70. WOULD LIKE THE MODELS TO GET ANOTHER RUN IN BEHIND THE EXITING LOW AND SAMPLE THE COLD AIR BEHIND IT BEFORE HEADLINES...SO WILL LEAVE IT TO THE DAY PACKAGE. LONG TERM...WEDNESDAY THROUGH FRIDAY... TEMPS SLOWLY REBOUND THROUGH WEDNESDAY. MODELS PUSH ANOTHER SYSTEM OUT OF THE ROCKIES ON THURSDAY...AND ARE A LITTLE OVERZEALOUS WITH THE ONSET OF PRECIPITATION AS A BAROCLINIC ZONE SETS UP OVER THE SRN HALF OF THE STATE. HAVE REDUCED THE NRN HALF OF THE POPS TO LOW CHANCE TO DELINEATE AREAS OF MORE LIKELY PRECIP TO THE SOUTH. EXPECT SHIFTS IN TIMING...BUT THURSDAY NIGHT LOOKS LIKE THE BEST SHOT AT PRECIP...ESP FOR THE SRN HALF OF ILLINOIS AND THE OHIO RIVER VALLEY. HJS && .AVIATION... ISSUED 631 AM CDT MON APR 6 2009 ALL SITES SHOULD START AS VFR AS LOW STRATUS IS QUICKLY MOVING AWAY...TAKING THE SNOW WITH IT. CMI IS ONLY SITE THAT MAY HAVE SOME LIGHT SNOW...SO WILL HAVE A ONE HOUR TEMPO GROUP FOR FIRST HOUR. BELIEVE THE BKN MID CLOUDS WILL NOT LAST LONG AND THEN AS THE SUN COMES UP COLD AIR STRATOCU WILL REDEVELOP OVER THE SITES AT MVFR CATEGORY AROUND 1.5KFT. AS THE DAY PROGRESS...CIGS WILL RISE TO ABOVE 2KFT. COULD BE SOME FLURRIES WITH THIS CAA SC BUT WILL NOT INCLUDE IN TAFS AT THIS TIME. MODELS INDICATE SOME LOWER LEVEL RH CONTINUING INTO THE EVENING AND OVERNIGHT SO WILL KEEP BKN MVFR CIGS GOING THROUGH THE PERIOD. NORTHWEST WINDS HAVE LOST THEIR GUSTS...BUT THE GUST WILL RETURN AS SUN COMES OUT AND HELPS TO MIX DOWN SOME 20-25KT GUSTS FOR MOST OF THE DAY. AUTEN && .ILX WATCHES/WARNINGS/ADVISORIES... NONE. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LINCOLN IL 558 AM CDT MON APR 6 2009 ILZ027>031-036-037-040-041-047-049-050-071100- CASS-FULTON-KNOX-MARSHALL-MASON-MORGAN-PEORIA-SCHUYLER-SCOTT- STARK-TAZEWELL-WOODFORD- 558 AM CDT MON APR 6 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS. .DAY ONE...TODAY AND TONIGHT BREEZY CONDITIONS WILL SCATTERED SNOW SHOWERS WILL CONTINUE TODAY. ONLY MINOR ACCUMULATIONS OF AN INCH OR LESS ARE EXPECTED. THE ILLINOIS RIVER WILL REMAIN IN FLOOD THROUGH MOST OF THIS WEEK. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY UNSEASONABLY COLD WEATHER WILL BE THE RULE FOR THE FIRST HALF OF THE WEEK WITH FREEZING TEMPERATURES EXPECTED TUESDAY AND WEDNESDAY MORNINGS. MORNING LOWS WILL RANGE FROM 25 TO 30. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. ILZ038-042>046-048-051>057-061>063-066>068-071100- CHAMPAIGN-CHRISTIAN-CLARK-COLES-CRAWFORD-CUMBERLAND-DE WITT- DOUGLAS-EDGAR-EFFINGHAM-JASPER-LOGAN-MACON-MCLEAN-MENARD-MOULTRIE- PIATT-SANGAMON-SHELBY-VERMILION- 558 AM CDT MON APR 6 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS...EAST CENTRAL ILLINOIS AND SOUTHEAST ILLINOIS. .DAY ONE...TODAY AND TONIGHT BREEZY CONDITIONS WILL SCATTERED SNOW SHOWERS WILL CONTINUE TODAY. ONLY MINOR ACCUMULATIONS OF AN INCH OR LESS ARE EXPECTED. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY UNSEASONABLY COLD WEATHER WILL BE THE RULE FOR THE FIRST HALF OF THE WEEK WITH FREEZING TEMPERATURES EXPECTED TUESDAY AND WEDNESDAY MORNINGS. MORNING LOWS WILL RANGE FROM 25 TO 30. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. ILZ071>073-071100- CLAY-LAWRENCE-RICHLAND- 558 AM CDT MON APR 6 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST ILLINOIS. .DAY ONE...TODAY AND TONIGHT BREEZY CONDITIONS WILL SCATTERED SNOW SHOWERS WILL CONTINUE TODAY. ONLY MINOR ACCUMULATIONS OF AN INCH OR LESS ARE EXPECTED. MINOR FLOODING ALONG THE LITTLE WABASH AND EMBARRAS RIVERS WILL CONTINUE THE NEXT COUPLE OF DAYS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY UNSEASONABLY COLD WEATHER WILL BE THE RULE FOR THE FIRST HALF OF THE WEEK WITH FREEZING TEMPERATURES EXPECTED TUESDAY AND WEDNESDAY MORNINGS. MORNING LOWS WILL RANGE FROM 25 TO 30. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. AUTEN
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
748 AM CDT MON APR 06 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 AM SNOW ROANOKE 40.80N 89.20W
04/06/2009 M3.0 INCH WOODFORD IL CO-OP OBSERVER
0710 AM SNOW 2 W PRINCEVILLE 40.93N 89.79W
04/06/2009 E1.6 INCH PEORIA IL CO-OP OBSERVER
0730 AM SNOW MINONK 40.90N 89.04W
04/06/2009 M2.0 INCH WOODFORD IL CO-OP OBSERVER
&&
KELLYPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
803 AM CDT MON APR 06 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 AM SNOW CHILLICOTHE 40.92N 89.50W
04/06/2009 M1.5 INCH PEORIA IL CO-OP OBSERVER
0700 AM SNOW MORTON 40.61N 89.47W
04/06/2009 M1.8 INCH TAZEWELL IL CO-OP OBSERVER
&&
KELLYPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
815 AM CDT MON APR 06 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0712 AM SNOW GRIDLEY 40.74N 88.88W
04/06/2009 E2.0 INCH MCLEAN IL MESONET
&&
KELLYPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
828 AM CDT MON APR 06 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0800 AM SNOW 2 NW CONGERVILLE 40.64N 89.24W
04/06/2009 M2.5 INCH WOODFORD IL CO-OP OBSERVER
0700 AM SNOW CLINTON 40.15N 88.96W
04/06/2009 M1.0 INCH DE WITT IL CO-OP OBSERVER
&&
KELLYPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
834 AM CDT MON APR 06 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0800 AM SNOW 5 NW PEORIA 40.80N 89.68W
04/06/2009 M1.8 INCH PEORIA IL CO-OP OBSERVER
&&
KELLYPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
908 AM CDT MON APR 06 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0800 AM SNOW 2 NE CISCO 40.03N 88.70W
04/06/2009 M1.0 INCH PIATT IL MESONET
0800 AM SNOW PEORIA 40.74N 89.61W
04/06/2009 M1.8 INCH PEORIA IL MESONET
0800 AM SNOW HENRY 41.11N 89.36W
04/06/2009 M2.0 INCH MARSHALL IL MESONET
&&
BAKThe national radar mosaic for the moment the first event began.
1 winter weather. Local standard time, as filed.
A woman was killed near Low Point in Woodford County when she lost control of her car on a slushy road. The accident occurred near the intersection of County Highway 1 and County Road 1950 North.
As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.
| Event | Date | Age | Sex | Where | Kind |
|---|---|---|---|---|---|
| Winter Weather, Woodford | 2009-04-06 | 44 | Female | Vehicle/Towed Trailer | Indirect |
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, April 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: 162989.