678
FXUS63 KIWX 260759
AFDIWX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTHERN INDIANA
359 AM EDT SUN APR 26 2026
KEY MESSAGES
- BECOMING WARM WITH HIGHS AROUND 75 TO NEAR 80 MONDAY.
- STRONG TO SEVERE STORMS LIKELY LATE MONDAY INTO MONDAY NIGHT.
- LOCALLY HEAVY RAINFALL MONDAY NIGHT IS FAVORABLE FOR ISOLATED
AREAL FLOODING AND RIVER FLOODING.
- COOLER AND MAINLY DRY WEDNESDAY THROUGH SATURDAY WITH HIGHS
IN THE MID 50S TO AROUND 60.
- FROST IS LIKELY MOST MORNING FROM THURSDAY INTO SUNDAY.
DISCUSSION
ISSUED AT 322 AM EDT SUN APR 26 2026
LOW LEVEL CLOUDS WERE SPREADING WEST FROM FAR SOUTHEAST LOWER
MICHIGAN AND NORTHWEST OHIO INTO NORTHERN INDIANA AND FAR
SOUTHWEST LOWER MICHIGAN. THE INTRUSION OF THESE CLOUDS WILL
HALT THE DEVELOPMENT OF RADIATIONAL FOG THAT WAS TRYING TO
DEVELOP WHERE SKIES WHERE SKIES WERE CLEAR. MORNING CLOUD COVER
WILL LIMIT INSOLATION AND SUBSEQUENTLY LIMIT HIGH TEMPERATURES
TO THE 60S OVER NORTHWEST OHIO AND FAR SOUTHERN LOWER MICHIGAN.
TEMPERATURES WILL BECOME VERY WARM MONDAY AS AN UPPER LEVEL RIDGE
BUILDS NORTH OF THE OHIO RIVER. IN ADDITION TO THE WARM TEMPERATURES,
PRECIPITABLE WATER VALUES WILL SOAR WELL ABOVE 1.0 INCH WITH
GFS VALUES EXCEEDING 1.5" ALONG THE PWAT AXIS THAT WILL TRANSLATE
EAST ACROSS THE FORECAST AREA LATE MONDAY INTO EARLY MONDAY NIGHT.
IN ADDITION TO THE FLOOD AND POSSIBLY FLASH FLOOD POTENTIAL, FAVORABLE
BUFKIT BULK SHEAR PROFILES WILL BRING A RISK FOR DAMAGING WINDS AND
ISOLATED TORNADOS WEST OF HIGHWAY 31.
LINGERING SHOWERS WILL END EARLY WEDNESDAY FOLLOWED BY DRY CONDITIONS
WITH HIGHS MOSTLY IN THE 50S THE REST OF THE WEEK. GIVEN THE LIKELIHOOD
OF THE GROWING SEASON BECOMING MORE ADVANCED, FROST IS LIKELY TO
BE IMPACTFUL AS TEMPERATURES ACROSS THE LOCALLY COLDER SPOTS TO DIP
WELL DOWN INTO THE 30S.
AVIATION /06Z TAFS THROUGH 06Z MONDAY/
ISSUED AT 124 AM EDT SUN APR 26 2026
MVFR STRATUS EXPANDING ACROSS THE AREA IN COOL ENE FLOW. FUEL-
ALTERNATE CEILINGS ARE LIKELY AT BOTH TERMINALS THROUGH THE LATE
MORNING AND MAY EVEN PERSIST AS LATE AS 17Z. DIURNAL MIXING WILL
BRING A RETURN TO VFR BY THE AFTERNOON THOUGH AND WILL PERSIST
THROUGH THE END OF THE PERIOD.
IWX WATCHES/WARNINGS/ADVISORIES
IN...NONE.
OH...NONE.
MI...NONE.
MARINE...NONE.
DISCUSSION...SKIPPER
AVIATION...AGD
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page