245
FXUS63 KIWX 230001
AFDIWX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTHERN INDIANA
801 PM EDT MON JUN 22 2026
KEY MESSAGES
- LARGE WAVES AND DANGEROUS CURRENTS ARE EXPECTED ON SOUTHERN
LAKE MICHIGAN BEACHES TODAY. THOSE VISITING THE BEACH ARE
ADVISED TO STAY OUT OF THE WATER AND AWAY FROM PIERS.
- ANOTHER ROUND OF RAIN IS EXPECTED LATE WED INTO THU AND A FEW
THUNDERSTORMS ARE POSSIBLE. SEVERE WEATHER IS NOT EXPECTED AT
THIS TIME.
- TEMPERATURES WILL GRADUALLY WARM THROUGH THE END OF THE WEEK
AND WILL BE ABOVE NORMAL BY SUNDAY.
DISCUSSION
ISSUED AT 212 PM EDT MON JUN 22 2026
A DYNAMIC LOW PRESSURE SYSTEM EXITING THE REGION IS RESULTING IN
IMPROVING CONDITIONS ACROSS THE AREA. NORTHERLY WINDS WRAPPING
AROUND THE BACKSIDE OF THE DEPARTING LOW WILL ALLOW COOLER,
DRIER AIR TO FILTER INTO THE REGION, KEEPING TEMPERATURES BELOW
NORMAL FOR THE NEXT FEW DAYS. SKIES WILL CLEAR FROM WEST TO EAST
THIS EVENING, AND GOOD RADIATIONAL COOLING WILL BRING OVERNIGHT
LOWS IN THE LOW TO MID 50S. TUESDAY WILL BE MILD WITH HIGHS IN
THE MID 70S.
THE LOW-LEVEL FLOW SHIFTS TO THE SOUTHWEST AGAIN ON WEDNESDAY,
AND WARM AIR ADVECTION AHEAD OF THE NEXT WEATHER SYSTEM WILL
FACILITATE HIGHS IN THE UPPER 70S. SHOWERS AND STORMS RETURN
WEDNESDAY EVENING, BUT WITH ONLY MARGINAL SHEAR AND INSTABILITY,
SEVERE WEATHER IS NOT EXPECTED, ALTHOUGH BRIEF HEAVY DOWNPOURS
ARE POSSIBLE. SCATTERED SHOWERS WILL REMAIN POSSIBLE THURSDAY
THROUGH SATURDAY AS A SERIES OF SHORTWAVES MOVE THROUGH THE
REGION. HIGH PRESSURE BUILDS BACK INTO THE MIDWEST ON SUNDAY AND
MONDAY WITH HIGH TEMPERATURES IN THE MID TO UPPER 80S.
AVIATION /00Z TAFS THROUGH 00Z WEDNESDAY/
ISSUED AT 800 PM EDT MON JUN 22 2026
GUSTY NORTH-NORTHWEST WINDS TO BEGIN THIS FORECAST PERIOD WILL
BECOME LIGHT NORTH THIS EVENING WITH BOUNDARY LAYER DECOUPLING
AND AN EXPANSIVE RIDGE OF HIGH PRESSURE BUILDING IN FROM THE
WEST. WIND GUSTS AT KSBN HAVE REACHED INTO THE 25 TO 30 KNOT
LATE THIS AFTERNOON AND THESE GUSTS APPEAR TO BE AIDED BY
PASSAGE OF MARINE ENHANCED BOUNDARY. SLOW PROGRESSION OF UPPER
LEVEL HEIGHT PATTERN WILL MAKE FOR SLOW EASTWARD MIGRATION OF
THIS RIDGE AXIS. POSITION OF THE RIDGE AXIS SHOULD BE FAR
ENOUGH WEST TO SUPPORT NORTHWEST WINDS AROUND 10 KNOTS TUESDAY
AFTERNOON. SOME HIGHER GUSTS CLOSER TO 20 KNOTS ARE POSSIBLE AT
KSBN MID-LATE TUESDAY AFTERNOON WITH SOME POTENTIAL MARINE
ENHANCEMENT ONCE AGAIN. OTHERWISE, VFR CONDITIONS ARE EXPECTED
THIS FORECAST PERIOD WITH VFR LOW CLOUDS DIMINISHING THIS
EVENING.
IWX WATCHES/WARNINGS/ADVISORIES
IN...BEACH HAZARDS STATEMENT UNTIL 4 AM CDT TUESDAY FOR INZ103.
OH...NONE.
MI...BEACH HAZARDS STATEMENT UNTIL 5 AM EDT TUESDAY FOR MIZ177-277.
MARINE...SMALL CRAFT ADVISORY UNTIL 5 AM EDT TUESDAY FOR LMZ043-046.
DISCUSSION...COBB
AVIATION...MARSILI
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