732
FXUS63 KILX 120809
AFDILX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
309 AM CDT FRI JUN 12 2026
KEY MESSAGES
- RELIEF FROM THE VERY HOT AIR WITH MORE SEASONABLE TEMPERATURES
ARRIVES TODAY. HIGHS WILL WIDELY BE IN THE UPPER 70S TO LOW
80S WITH LOWS IN THE LOW 60S TODAY.
- MORE SHOWERS AND THUNDERSTORMS ARE LIKELY (70-90% CHANCE)
SATURDAY, WITH A LEVEL 2 OF 5 (SLIGHT) RISK FOR SEVERE
WEATHER AND EXCESSIVE RAINFALL, WITH AN ENHANCED RISK (LEVEL 3
OF 5)OF SEVERE WEATHER AS FAR EAST AS THE STL METRO, TOUCHING
SCOTT COUNTY.
DISCUSSION
ISSUED AT 309 AM CDT FRI JUN 12 2026
WELL A PEACEFUL DAY OF WEATHER IS IN STORE FOR TODAY. MUCH LESS
HUMID AIR HAS ARRIVED AS THE OVERNIGHT COLD FRONT PUSHED OUT THE
VERY MOIST AIRMASS. WE GET RELIEF FROM THE VERY HOT AIR WITH MORE
SEASONABLE TEMPERATURES STARTING TODAY. HIGHS WILL WIDELY BE IN THE
UPPER 70S TO LOW 80S WITH LOWS IN THE LOW 60S.
THE BREAK FROM ACTIVE WEATHER WILL BE SHORT LIVED, AS SEVERE WEATHER
RETURNS SATURDAY AS A REINFORCING COLD FRONT IS EXPECTED TO PUSH
THROUGH CENTRAL AND SOUTHEASTERN IL SATURDAY. THE SPC HAS ALL OF
CENTRAL IL IN A SLIGHT RISK (LEVEL 2 OF 5) WITH THE ENHANCED RISK
(LEVEL 3 OF 5) AS FAR EAST AS THE STL METRO, TOUCHING SCOTT COUNTY.
THERE COULD BE SOME MORNING CONVECTION FROM A POSSIBLE REMNANT
MCV RESULTING FROM A DECAYING MCS TRAVELING ACROSS MO OVERNIGHT.
CONFIDENCE IN THIS CONVECTION IS QUITE LOW, AS IT IS HARD TO
PINPOINT A MESOSCALE FEATURE LIKE THIS OVER 24 HOURS OUT. THE
MAIN HAZARD OF CONCERN IS THE DAMAGING WIND RISK AS A BOWING
QLCS IS EXPECTED IN THE AFTERNOON INTO THE EVENING. DCAPE IS
AROUND 800-1000 J/KG. LARGE HAIL AND QLCS TORNADOES ARE ALSO
POSSIBLE. FORECAST LAPSE RATES LOOK TO BE PRETTY STEEP (7-8
C/KM). BULK SHEAR OF 40-50 KNOTS. THERE COULD ALSO BE A CONCERN
FOR LOCALIZED FLOODING AS THE LINE OF STORMS MOVE THROUGH,
ESPECIALLY WHERE THE HEAVIEST RAIN HAS ALREADY FALLEN OVER THE
LAST WEEK. SOME FORECAST SOUNDING HAS A LONG, SKINNY CAPE
PROFILE TO THEM WITH PWATS OF 1.6-1.8 INCHES.
BEYOND SATURDAY, A HIGH PRESSURE CENTER SETS UP OVER THE REGION,
GIVING US A MUCH NEEDED BREAK FROM THE HOT AND ACTIVE WEATHER.
SUNDAY AND MONDAY WILL HAVE BELOW NORMAL TEMPERATURES WITH HIGHS IN
THE 70S AND LOWS IN THE 50S. TEMPERATURES THEN WARM BACK TO NEAR
NORMAL, WITH HIGHS INTO THE 80S BY MIDWEEK INTO THE END OF THE WEEK.
RAIN AND THUNDERSTORMS WILL RETURN TO THE FORECAST TUESDAY INTO THE
END OF THE WEEK.
AVIATION /06Z TAFS THROUGH 06Z SATURDAY/
ISSUED AT 1245 AM CDT FRI JUN 12 2026
VFR CONDITIONS ARE FORECAST TO OCCUR NEXT 24 HOURS THROUGH
06Z/SAT ACROSS THE CENTRAL IL AIRPORTS. A COLD FRONT PUSHING
INTO SOUTHEAST IL EARLY OVERNIGHT WILL PUSH INTO THE OHIO RIVER
VALLEY BY MORNING. ITS CONVECTION WAS SOUTHEAST OF I-70 AND WILL
CONTINUE MOVING AWAY FROM THE CENTRAL IL AIRPORTS. CLEARING
SKIES NOTED FROM I-55 WEST WHILE MID LEVEL CLOUDS OVER DEC AND
CMI SHOULD SCATTERED OUT/CLEAR NEXT FEW HOURS. WEST TO NW WINDS
HAVE DIMINISH TO 5-10 KTS AND WILL GENERALLY BE AROUND 10 KTS ON
SATURDAY. WINDS VEER SOUTH TO SSW AROUND 5 KTS SAT EVENING.
ILX WATCHES/WARNINGS/ADVISORIES
NONE.
KEY MESSAGES...COPPLE
DISCUSSION...COPPLE
AVIATION...07
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page