627
FXUS63 KIWX 091740
AFDIWX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTHERN INDIANA
140 PM EDT SAT AUG 9 2025
KEY MESSAGES
- HOT AND HUMID THROUGH MONDAY WITH HIGHS IN THE UPPER 80S TO
NEAR 90 AND HEAT INDICES IN THE LOW TO MID 90S.
- CHANCES FOR SHOWERS AND STORMS RETURNS NEXT WEEK, WITH LOW
CONFIDENCE ON EXACT TIMING AND LOCATIONS TO BE IMPACTED.
DISCUSSION
ISSUED AT 234 AM EDT SAT AUG 9 2025
VERY FEW CHANGES TO THE FORECAST PACKAGE THIS MORNING. STILL
EXPECTING HOT AND HUMID CONDITIONS THIS WEEKEND WITH RIDGING
PUSHING INTO THE AREA BRINGING HIGH TEMPERATURES EACH DAY RIGHT
AROUND 90 DEGREES COUPLED WITH SURFACE DEW POINTS GENERALLY IN
THE LOW TO MID 70S. THIS WILL BRING HEAT INDICES OR FEELS LIKE
TEMPERATURES IN THE LOW TO MID 90S EACH DAY THROUGH MONDAY.
THE TROUGHING OVER THE NORTHERN PLAINS STATES WILL SLOWLY PUSH
EASTWARD INTO OUR FAR WESTERN PORTIONS OF THE CWA BY SUNDAY
AFTERNOON INCREASING CHANCES FOR SHOWERS/THUNDERSTORMS AND WILL
WORK ITS WAY EAST THROUGH THE REMAINDER OF THE FORECAST AREA ON
MONDAY. THIS IS IN THE WAKE OF THE RIDGING THAT WILL PUSH SOUTH
AND EAST OUT OF THE AREA. STILL UNCERTAINTY IN THE EXACT STORM
COVERAGE AND INTENSITY AS THERE WILL BE A MORE SCATTERED NATURE
TO THE SHOWERS/STORMS WITH INSTABILITY AS THE MAIN DRIVER.
NEXT WEEK THERE WILL BE CHANCES FOR SHOWERS AND STORMS MAINLY
DIURNALLY AND INSTABILITY DRIVEN WITH A MORE ZONAL FLOW ALOFT
AND SLIGHTLY COOLER TEMPERATURES THROUGH MOST OF THE WORK WEEK.
STILL INDICATIONS THAT NEXT WEEKEND WE WILL SEE ANOTHER SHOT OF
HOT AND HUMID AIRMASS AS A MORE BROAD RIDGING PATTERN EMERGES
OVER THE REGION.
AVIATION /18Z TAFS THROUGH 18Z SUNDAY/
ISSUED AT 139 PM EDT SAT AUG 9 2025
PLENTY OF DRY AIR REMAINS KEEPING THE AREA IN VFR CONDITIONS THROUGH
THE PERIOD. ADDITIONAL TAF GROUPS WILL BE USED FOR INTRODUCING
10 KT SUSTAINED LEVELS IN AND OUT. TRAJECTORIES STAY
CONSISTENTLY OUT OF THE SOUTH THROUGH THE PERIOD.
IWX WATCHES/WARNINGS/ADVISORIES
IN...NONE.
OH...NONE.
MI...NONE.
MARINE...NONE.
DISCUSSION...ANDERSEN
AVIATION...ROLLER
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