967
FXUS63 KIWX 061831
AFDIWX
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTHERN INDIANA
131 PM EST TUE JAN 6 2026
KEY MESSAGES
- ABOVE NORMAL TEMPERATURES PERSIST THROUGH FRIDAY, THEN COOLER THIS
WEEKEND.
- AREAS OF FOG AND DRIZZLE PERSIST INTO TONIGHT, MAINLY FOR AREAS
NORTH OF US 30 IN NE IN, NW OH, AND SOUTH-CENTRAL MI.
- PERIODS OF RAIN (80-90%) LATE THURSDAY INTO THURSDAY NIGHT.
- DECENT RAIN CHANCES (50-70%) RETURN LATE FRIDAY NIGHT INTO
SATURDAY, POSSIBLY ENDING AS SNOW SHOWERS SATURDAY AFTERNOON-
NIGHT.
DISCUSSION
ISSUED AT 131 PM EST TUE JAN 6 2026
AREAS OF FOG AND DRIZZLE WILL LIKELY CONTINUE FOR AREAS MAINLY NORTH
OF US 30 IN NORTHEAST IN, NORTHWEST OH AND SOUTH-CENTRAL MI THIS
AFTERNOON INTO TONIGHT GIVEN MOIST LOW LEVELS NEAR A LOW LEVEL
BOUNDARY. THE RESPONSIBLE WEAK SFC WAVE WILL TRACK EAST TOWARD LAKE
ERIE AND ONTARIO THIS EVENING WITH SUBTLE LOW LEVEL ASCENT WANING
FOR A TIME LATE AFTERNOON INTO EARLY EVENING. A TRAILING, LOW
AMPLITUDE, MID LEVEL WAVE THEN FOLLOWS THROUGH LATER THIS EVENING
INTO EARLY WEDNESDAY MORNING WHICH COULD ALLOW FOR BRIEF INCREASE TO
DRIZZLE/FOG COVERAGE. LOW CLOUDS LIKELY REMAIN LOCKED WITHIN A
SUBSIDENCE INVERSION INTO AT LEAST THE MORNING HOURS ON
WEDNESDAY, THOUGH SOME THINNING AND SCATTERING IS EXPECTED
WEDNESDAY AFTERNOON WITH HIGHS IN THE 40S.
THURSDAY INTO FRIDAY WILL FEATURE MILD TEMPERATURES AND PERIODIC
RAIN CHANCES AS MOIST SOUTHWEST FLOW STRENGTHENS IN ADVANCE OF A
LONGWAVE TROUGH DIGGING INTO THE INTERMOUNTAIN WEST AND HIGH PLAINS.
THE BEST OPPORTUNITY FOR RAIN (POSSIBLY UP TO A HALF INCH) COMES
LATER THURSDAY INTO THURSDAY NIGHT AS A MOISTURE-LADEN LEAD
SHORTWAVE SHEARS QUICKLY NORTHEAST INTO THE CENTRAL PLAINS AND
WESTERN GREAT LAKES. 850-700 MB LAYER MIXING RATIOS OF 7-8 G/KG WILL
ADVECT IN WITHIN A ~60 KT LOW LEVEL JET ON THE EASTERN FLANK OF THE
SFC REFLECTION TRACK. THUS, HELD WITH CATEGORICAL POPS AND DECENT
WPC QPF (HIGHEST NORTHWEST).
LOWER CHANCES FOR A FEW SHOWERS THEN LINGER INTO FRIDAY AND MUCH OF
FRIDAY NIGHT NEAR A LEFTOVER FRONTAL BOUNDARY FROM THE LOWER GREAT
LAKES SOUTHWEST TO THE LOWER MS VALLEY FRIDAY. SFC LOW PRESSURE THEN
ATTEMPTS TO ORGANIZE AND TRACK NORTHEAST INTO THE GREAT LAKES REGION
SATURDAY INTO SATURDAY NIGHT. MODELS CONTINUE TO STRUGGLE WITH THE
TRACK/INTENSITY GIVEN ALL IMPORTANT DETAILS ON WHEN/IF SHORTWAVE
ENERGY WITHIN THE INCOMING UPPER TROUGH AXIS PHASES. AN OVERALL
CONSENSUS FAVORS A NORTHWARD TRACK THROUGH THE LOCAL AREA AND TOWARD
LAKE HURON DURING THIS TIME. THE RESULT WOULD BE CHANCES FOR RAIN,
POSSIBLY ENDING AS SNOW SHOWERS AS COLDER AIR EVENTUALLY WRAPS IN
BEHIND THIS SYSTEM LATER SATURDAY INTO SATURDAY NIGHT.
AVIATION /18Z TAFS THROUGH 18Z WEDNESDAY/
ISSUED AT 131 PM EST TUE JAN 6 2026
THE WARM FRONT HAS MOVED NORTH OF FWA AND WAS IN THE VCNTY OF SBN.
VISIBILITIES WERE IMPROVING BEHIND THE FRONT WITH SOMEWHAT DRIER AIR
SPREADING IN FROM THE WEST. THE FRONT WILL CONTINUE TO MOVE NORTH OF
SBN; HOWEVER, THE CEILING SHOULD REMAIN BELOW 005 UNTIL LATE
WEDNESDAY MORNING. USED CONDITIONAL CLIMATOLOGY IN TANDEM WITH THE
HRRR DATA FOR DIURNAL TRENDS. AREA OF DRIZZLE AT FWA WILL PERSIST
UNTIL EARLY TONIGHT WHEN SOMEWHAT DRIER AIR SPREADS IN FROM THE
WEST.
IWX WATCHES/WARNINGS/ADVISORIES
IN...NONE.
OH...NONE.
MI...NONE.
MARINE...NONE.
DISCUSSION...STEINWEDEL
AVIATION...SKIPPER
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