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000
FXUS63 KIWX 190612
AFDIWX

Area Forecast Discussion
National Weather Service Northern Indiana
212 AM EDT Fri Apr 19 2024

.KEY MESSAGES...

- Dry and cool this weekend with widespread frost likely Sunday morning.

&&

.DISCUSSION...
Issued at 212 AM EDT Fri Apr 19 2024

Post frontal cold advection will wrap ewd this morning, tempering
diurnal heating even as skies clear. Otherwise gusty west winds ramp
quickly by mid morning through evening before abating. Wwd placement
of sfc ridge over NE and continued 5-10kt wrly flow overnight will
stave off frost potential tonight. However ridge elongates ewd into
the wrn OH valley Sat night in behind secondary cold front dropping
through the lakes. Weak gradient flow if not decoupling will bring
about widespread frost potential and perhaps a light freeze
northeast.

Thereafter some brief moderation in temps as upper flow flattens Sun-
Tue ahead of another wave progged to dig swd through the lakes Tue.
Some return flow inadv of this sys to support showers and perhaps
some isold thunder Tue aftn pending degree of moisture return.
Another cold Canadian airmass follows in its wake Tue night-Thu with
more frost/freeze potential.

&&

.AVIATION /06Z TAFS THROUGH 06Z SATURDAY/...
Issued at 108 AM EDT Fri Apr 19 2024

A line of showers and storms ahead of a cold front is
progressing through the area from west to east currently. KFWA
recently reported a 38 kt wind gust as the thunderstorms passed
through. While wind gusts up to 40 kts can be expected with any
of these storms, by 06Z, the thunderstorms will be east of both
terminals. Rain will end by 06Z at KSBN with perhaps a shower in
the vicinity at the start of the TAF cycle. For KFWA, showers
will persist through 07-08Z before tapering off. MVFR ceilings
currently prevail, with the NBM showing an 80%+ chance of MVFR
ceilings through 10Z at KSBN and 14Z at KFWA, respectively. From
west to east around daybreak, skies will clear and VFR ceilings
will prevail. Behind the cold front, north/northwesterly winds
will frequently gust up to 25 kts throughout the day today.
Ceilings will remain VFR through the end of the TAF forecast
cycle, with any clouds at or above 10kft.

&&

.IWX WATCHES/WARNINGS/ADVISORIES...
IN...None.
OH...None.
MI...None.
MARINE...Small Craft Advisory from 5 AM to 2 PM EDT Friday for LMZ043-
     046.

&&

$$

DISCUSSION...T
AVIATION...Johnson