518
FXUS63 KIWX 010954
AFDIWX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTHERN INDIANA
554 AM EDT MON JUN 1 2026
KEY MESSAGES
- QUIET CONDITIONS PERSIST THROUGH MUCH OF THE UPCOMING WEEK.
HIGHS WILL RANGE FROM 75-80 THROUGH WEDNESDAY.
- TRENDING WARMER AND MORE HUMID THURSDAY THROUGH THE WEEKEND WITH
HIGHS WELL INTO THE 80S.
- PERIODIC CHANCES (30-50%) FOR SCATTERED SHOWERS AND THUNDERSTORMS
FRIDAY AFTERNOON THROUGH SUNDAY.
UPDATE
ISSUED AT 549 AM EDT MON JUN 1 2026
FGEN FORCING WITH THE WEAK MID LEVEL WAVE WAS EDGING INTO FAR NW
PARTS OF THE AREA WITH SOME SPRINKLES SHOWING UP IN OBS.
UPSTREAM THERE HAS BEEN SOME SLIGHTLY BETTER RETURNS WITH A
HUNDREDTH OR 2 SHOWING UP. OBS IN LA PORTE COUNTY SHOWING SOME
LOWER CLOUDS IN THE 4000 FT RANGE, SUGGESTING MAYBE SOME QUICK
MEASURABLE PRECIP OCCURS. HAD ADDED SOME 15 POPS EARLIER FOR A
FEW HOURS AND WILL STICK WITH THOSE AS WELL AS MAINTAINING THE
SPRINKLES FURTHER EAST.
DISCUSSION
ISSUED AT 138 AM EDT MON JUN 1 2026
AXIS OF VERY WEAK LIFT HAS EDGED INTO FAR SW PARTS OF THE AREA WITH
EARLIER RETURNS HAVING FALLEN APART AS IT ENCOUNTERED THE VERY DRY
LOW LEVELS. SLIGHTLY BETTER SETUP UPSTREAM FROM CHICAGO NW WHERE
SOME SPRINKLES/VERY LIGHT SHOWERS ARE OCCURRING FROM A MID LEVEL
DECK. HAVE LEFT THE INHERITED MENTION OF SPRINKLES INTO MON
MORNING IN SW AREAS, BUT TONED DOWN TO SLGT CHC FOR NOW. THESE
SHOULD QUICKLY END DURING THE MORNING WITH TEMPS BACK WELL INTO
THE 70S FOR THE AFTERNOON.
OUTSIDE OF THIS, A TRANQUIL AND SEASONABLY WARM FORECAST IS STILL IN
STORE UNTIL THE UPPER LEVEL FLOW BEGINS TO FLATTEN AND SFC HIGH
PRESSURE SHIFTS EAST TO ALLOW FOR INCREASING WARMTH AND MOISTURE,
ALONG WITH CHANCES FOR SHOWERS AND STORMS FOR THE WEEKEND.
AVIATION /06Z TAFS THROUGH 06Z TUESDAY/
ISSUED AT 549 AM EDT MON JUN 1 2026
VFR CONDITIONS STILL EXPECTED. FORCING FROM A WEAK DISTURBANCE
MAY ALLOW FOR A FEW "LOWER CLOUDS" AND IF SOMEHOW A SHOWER MAKES
IT IN, COULD BE A BRIEF VSBY REDUCTION AT KSBN PER SOME UPSTREAM
OBS. HAVE LEFT TAFS ALONE FOR NOW.
IWX WATCHES/WARNINGS/ADVISORIES
IN...NONE.
OH...NONE.
MI...NONE.
MARINE...NONE.
UPDATE...FISHER
DISCUSSION...FISHER
AVIATION...FISHER
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