830
FXUS63 KILX 101101
AFDILX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LINCOLN IL
601 AM CDT MON AUG 10 2026
KEY MESSAGES
- HEAT ADVISORY REMAINS UNCHANGED TODAY; HIGH TEMPERATURES WILL
REACH AROUND 90 DEGREES WITH PEAK HEAT INDICES NEAR 100
DEGREES, THOUGH LINGERING ANVIL DEBRIS AND UPPER-LEVEL
WILDFIRE SMOKE INTRODUCE MINOR TEMPERATURE UNCERTAINTY.
- SEVERE WEATHER THREAT LATE THIS AFTERNOON AND EVENING REMAINS
CONDITIONAL ACROSS CENTRAL AND NORTHEAST ILLINOIS. ISOLATED
DAMAGING WINDS, HAIL, AND A LOCALIZED TORNADO RISK MAY EVOLVE
IF OUR CAPPED ENVIRONMENT BREAKS.
- HIGHER-CONFIDENCE, HIGH-END SEVERE POTENTIAL DEVELOPS BY
MIDDAY TUESDAY NEAR THE I-80 AND I-74 CORRIDORS WHERE EXTREME
WIND GUSTS (70+ MPH) ARE PLAUSIBLE.
- ACTIVE "RING-OF-FIRE" PATTERN MAINTAINS PERIODIC SHOWER AND
THUNDERSTORM CHANCES THROUGH LATE WEEK AND THE WEEKEND.
DISCUSSION
ISSUED AT 557 AM CDT MON AUG 10 2026
VFR CONDITIONS SHOULD PERSIST THROUGHOUT THIS TAF PERIOD DESPITE
OCCASIONAL PASSING CLOUDS. WINDS WILL REMAIN MOSTLY FROM THE
SOUTH AROUND 10 KTS, THOUGH COULD BECOME VARIABLE SHOULD
SCATTERED THUNDERSTORMS DEVELOP OVER A REGIONAL TERMINAL THIS
AFTERNOON. ULTIMATELY, THIS POSSIBILITY REMAINS TOO LOW TO
MENTION IN THE TAFS, BUT TRENDS WILL BE MONITORED AND AMENDMENTS
WILL BE MADE AS NEEDED.
A SLIGHTLY HIGHER --THOUGH STILL LOW-- PROBABILITY FOR SCATTERED
THUNDERSTORMS EXISTS THIS EVENING. THIS HAS BEEN COVERED BY A
BLANKET PROB30 GROUP FOR -TSRA PROGRESSING FROM WEST TO EAST
BETWEEN 04Z-12Z.
AVIATION /06Z TAFS THROUGH 06Z TUESDAY/
ISSUED AT 1203 AM CDT MON AUG 10 2026
A CLUSTER OF THUNDERSTORMS IS ONGOING NORTH OF I-74 IN NORTHERN
ILLINOIS LATE TONIGHT. THE LATEST SUITE OF GUIDANCE SUGGESTS THE
MAJORITY OF THIS ACTIVITY WILL REMAIN NORTH OF THE TERMINALS WITH A
LOW CHANCE (30%) THAT STORMS GRAZE KBMI AND KCMI THROUGH EARLY
MONDAY MORNING. BEYOND THAT, SHOWER AND STORM CHANCES LOOK TO BE
RELATIVELY LOW THROUGH MONDAY, BUT CONFIDENCE DECREASES BY MONDAY
NIGHT. SOUTH WINDS WILL VEER TO THE SOUTHWEST BY LATE MORNING WITH
GUSTS OCCASIONALLY TOUCHING 20 KTS. WINDS WILL EASE BY MONDAY
NIGHT AND RETREAT TO THE SOUTH.
ILX WATCHES/WARNINGS/ADVISORIES
HEAT ADVISORY FROM NOON TODAY TO 7 PM CDT THIS EVENING FOR
ILZ040-047>052-061>063-066>068-071>073.
KEY MESSAGES...MJA
DISCUSSION...MJA
AVIATION...MJA
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