685
FXUS63 KILX 231729
AFDILX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
1229 PM CDT MON MAR 23 2026
KEY MESSAGES
- TEMPERATURES WILL GRADUALLY REBOUND MONDAY THROUGH THURSDAY,
WITH HIGHS IN THE LOWER 50S MONDAY, INCREASING TO LOWER 80S BY
THURSDAY AHEAD OF THE NEXT COLD FRONT.
- ANOTHER CHANCE (60-80%) FOR SHOWERS AND THUNDERSTORMS WILL
ACCOMPANY A COLD FRONT THURSDAY. THERE IS AT LEAST A LOW SEVERE
THUNDERSTORM RISK.
DISCUSSION
ISSUED AT 215 AM CDT MON MAR 23 2026
COOLER TEMPERATURES WELCOMES US INTO THE NEW WORK WEEK. TODAY THE
HIGHS WILL ONLY TOP OUT IN THE UPPER 40S TO LOW 50S, WHICH IS CLOSER
TO NORMAL FOR THE LATTER HALF OF MARCH. A HIGH PRESSURE SYSTEM IS
SETTING UP OVER THE PLAINS/MIDWEST TODAY AND WILL GRADUALLY FLOAT
EASTWARD OVER THE NEXT FEW DAYS. THIS WILL BRING SOME WAA INTO THE
AREA TUESDAY, GRADUALLY INCREASING TEMPERATURES AHEAD OF THE NEXT
LOW PRESSURE SYSTEM THURSDAY. THE HIGHS ON THURSDAY HAVE A 30-70%
CHANCE OF EXCEEDING 80 DEGREES SOUTH OF I-74 AND WEST OF I-57,
BASED OFF THE NBM PROBABILITIES. THE PROBABILITIES INCREASE AS YOU
MOVE SOUTHWEST TOWARDS THE STL AREA.
THURSDAY'S SYSTEM WILL BE ACCOMPANIED WITH A STRONG COLD FRONTAL
PASSAGE. IT LOOKS TO BRING STORMS, WINTRY PRECIP (MAYBE??),
EXCESSIVE RAINFALL, AND A SHARP DROP OFF IN TEMPERATURES AGAIN. THE
MACHINE LEARNING MODELS ARE INDICATING THE POSSIBILITY OF STRONG TO
SEVERE STORMS THURSDAY AFTERNOON INTO THE EVENING. THERE APPEARS TO
BE A SIMILAR SET UP AS YESTERDAY'S ENVIRONMENT FOR THIS ROUND ON
THURSDAY. THE MOST NOTABLE DIFFERENCE BETWEEN THE TWO SYSTEMS IS THE
PWATS ARE MUCH HIGHER WITH THIS NEXT ONE. THE FORECAST SOUNDINGS ARE
SHOWING PWAT VALUES AROUND 1.3-1.5. BEHIND THE STORMS, THE RAIN
COULD CHANGE OVER TO A RAIN-SNOW MIX WHERE THE TEMPERATURES GET COOL
ENOUGH IN THE NIGHTTIME HOURS. AS OF NOW, NO MEASURABLE AMOUNTS OF
SNOW ARE FORECAST AND CONFIDENCE IN THIS OCCURRING ISN'T HIGH.
BEHIND THE FRONT, LOWS THURSDAY NIGHT WILL DIP DOWN INTO THE MID 30S
TO LOW 40S. HIGHS ON FRIDAY WON'T BE MUCH WARMER, WITH VALUES IN THE
UPPER 40S NEARING 50. AS OF NOW, THERE IS A 30-50% CHANCE THAT
TEMPERATURES WILL GET BACK ABOVE 70 DEGREES BY NEXT MONDAY. THE
WEEKEND INTO NEXT WEEK IS LOOKING TO BE DRY.COPPLE
AVIATION /18Z TAFS THROUGH 18Z TUESDAY/
ISSUED AT 1230 PM CDT MON MAR 23 2026
AS HIGH PRESSURE SHIFTS EAST ACROSS THE REGION, WINDS WILL
SWITCH FROM NORTHEASTERLY THIS AFTERNOON TO EASTERLY THIS
EVENING AND EVENTUALLY SOUTHEASTERLY TOMORROW MORNING. IN
ADDITION, A WEAK DISTURBANCE WILL BRING MID-HIGH CLOUD COVER TO
THE AREA OVERNIGHT INTO THE MORNING, BUT THIS IS LIKELY (80-90%
CHANCE) TO REMAIN VFR.
ILX WATCHES/WARNINGS/ADVISORIES
NONE.
KEY MESSAGES...COPPLE
DISCUSSION...COPPLE
AVIATION...BUMGARDNER
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page