170
FXUS63 KIWX 210544
AFDIWX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTHERN INDIANA
144 AM EDT MON JUL 21 2025
KEY MESSAGES
- HOT AND HUMID CONDITIONS WILL DEVELOP WEDNESDAY AND PERSIST
THROUGH FRIDAY WITH HIGHS IN THE LOWER 90S AND HEAT INDICES
FROM 100 TO 105.
- THERE IS A MODERATE SWIM RISK FOR LAKE MICHIGAN BEACHES IN
BERRIEN COUNTY, MI AND LA PORTE COUNTY, IN ON MONDAY. BREAKING
WAVES AND CURRENTS ARE EXPECTED. IF VISITING THE BEACH, PAY
ATTENTION TO BEACH FLAGS AND HEED THE ADVICE OF LIFEGUARDS OR
BEACH PATROL.
DISCUSSION
ISSUED AT 136 PM EDT SUN JUL 20 2025
EARLY THIS AFTERNOON, A COLD FRONT HAD MOVED SOUTH INTO THE
FORECAST AREA. AN AREA OF RAIN WITH A FEW EMBEDDED THUNDERSTORMS
WAS MOVING EAST ACROSS NORTHERN INDIANA INTO OHIO. THE STRONGEST
STORMS HAVE CONGEALED JUST SOUTH OF THE FORECAST AREA WHERE THE
AIRMASS WAS MUCH MORE UNSTABLE. GIVEN THE STABILITY OF THE
AIRMASS OVER THE FORECAST AREA WITH CLOUD COVER AND RAIN COOLED
AIR, HEAVY RAINFALL IS NO LONGER EXPECTED. PATCHES OR AREAS OF
LIGHT RAIN SHOULD PERSIST INTO MONDAY EVENING MAINLY SOUTH OF
HIGHWAY 30. CONDITIONS FROM MONDAY EVENING INTO THURSDAY SHOULD
BE MAINLY DRY.
HOT AND HUMID CONDITIONS ARE AHEAD THIS UPCOMING WEEK. THE HOT
WEATHER WILL RETURN BY WEDNESDAY AND PERSIST THROUGH THE
WEEKEND. HIGH TEMPERATURES ARE EXPECTED TO BE AROUND 90 DEGREES
INTO THE LOWER 90S WITH HEAT INDICES FROM 100 TO 105. HEAT
HEADLINES ARE LIKELY TO EVENTUALLY BE ISSUED.
AVIATION /06Z TAFS THROUGH 06Z TUESDAY/
ISSUED AT 129 AM EDT MON JUL 21 2025
PREDOMINANTLY VFR CONDITIONS AT THE TERMINALS THIS PERIOD WITH
MAINLY HIGH CLOUDS TO CONTEND WITH. THE EXCEPTION WOULD BE THE
POTENTIAL FOR SOME BR THIS MORNING AT BOTH TERMINALS. CURRENT
VISIBILITIES AROUND MI ARE GENERALLY IN THE 3-7SM RANGE WITH
SCATTERED SPOTS OF 1-3SM. KJXN IS PRESENTLY AROUND A HALF A
MILE. KBEH BRIEFLY WENT DOWN TO 3/4 MILE EARLIER BUT HAS SINCE
IMPROVED TO 1 1/2SM. IN OHIO, LIMA IS PRESENTLY AT 0SM WITH
DENSE FOG, AND VAN WERT AT 5SM. MOST GUIDANCE KEEPS BR OUT OF
KSBN/KFWA BUT WITH RESIDUAL MOISTURE FROM TODAYS RAIN AND THE
RECENT COLD FRONT PASSAGE CAN'T RULE OUT A DROP TO 4-5SM. FOR
NOW HANDLED WITH A TEMPO AND WILL MONITOR TRENDS FOR POTENTIAL
DIPS TO IFR OR LESS.
IWX WATCHES/WARNINGS/ADVISORIES
IN...NONE.
OH...NONE.
MI...NONE.
MARINE...NONE.
DISCUSSION...SKIPPER
AVIATION...MCD
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