420
FXUS63 KIWX 100505
AFDIWX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTHERN INDIANA
105 AM EDT SUN AUG 10 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.
- FEW FOR SHOWERS AND STORMS NEXT WEEK, PRIMARILY TUESDAY AND
WEDNESDAY YET CONFIDENCE REMAINS LOW ON EXACT TIMING AND
LOCATIONS TO BE IMPACTED.
DISCUSSION
ISSUED AT 205 PM EDT SAT AUG 9 2025
DOMINANT UPPER RIDGE WILL HOLD FIRM ACROSS THE OH/TN VALLEYS THROUGH
MONDAY BEFORE THE NRN EXTENT FLATTENS A BIT IN RESPONSE TO SHORTWAVE
PROGRESSING THROUGH SRN ON TUESDAY. THIS WILL DELAY INTRUSION OF
COMPOSITE SFC FRONTAL ZONE INTO THE AREA UNTIL LATER TUESDAY AND
GIVEN VERY WARM TEMPS ALOFT, CURTAIL ANY REALISTIC CHC FOR STORMS
UNTIL THEN.
OTHERWISE UPPER RIDGE REAMPLIFIES INTO NEXT WEEKEND THEN WITH
CONTINUED HEAT AND HUMIDITY AND FEW CHANCES FOR STORMS IN POORLY
FORCED AND HOSTILE ENV.
AVIATION /06Z TAFS THROUGH 06Z MONDAY/
ISSUED AT 103 AM EDT SUN AUG 10 2025
ANOTHER TRANQUIL, DRY DAY IS EXPECTED ACROSS THE FORECAST AREA
TODAY. A FEW SHOWERS MAY BE POSSIBLE IN NW INDIANA AND AT KSBN
LATE IN THE DAY (MAINLY AFTER 21Z), BUT SHOWERS WILL BE SO
SPARSE THAT I OPTED TO LEAVE ANY MENTION OF THEM OUT OF THE TAFS
FOR NOW. VFR CEILINGS ARE EXPECTED TO PERSIST THROUGHOUT THE
DURATION OF THE TAF FORECAST PERIOD. SOUTHEASTERLY WINDS WILL
GRADUALLY SWICTH TO BECOME SOUTHWEST BY THE LATE MORNING. GUSTS
TO 20 KTS ARE POSSIBLE ONCE AGAIN THIS AFTERNOON AND EVENING AT
KSBN AND NEAR LAKE MICHIGAN.
IWX WATCHES/WARNINGS/ADVISORIES
IN...NONE.
OH...NONE.
MI...NONE.
MARINE...NONE.
DISCUSSION...T
AVIATION...JOHNSON
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