266
fxus63 kiwx 131859
afdiwx
area forecast discussion
national weather service northern indiana
159 pm est fri nov 13 2026
.key messages...
- the band of lake effect rain and snow showers is expected to
shift eastward into northwest indiana and southwest lower
michigan late tonight into saturday morning. some localized
light snow accumulations of less than an inch are possible
inland and mainly across grassy areas.
- below normal temperatures continue today through the weekend
followed by slowly moderating temperatures into the mid and
upper 50s by the middle of next week.
&&
.discussion...
issued at 131 pm est fri nov 13 2026
with a northerly flow continuing on the eastern periphery of
high amplitude ridging over the central conus and extending well
northward into central canada, a band of lake effect
precipitation continues to stream southward into northwestern in
and northeastern il. currently surface temperatures have warmed
enough to keep all precipitation in liquid form. tonight, a
slight shift in winds to more northwesterly around 4 to 5 am est
will allow the band to make a more easterly shift further into
northwestern in (northwestern portions of the cwa) and along
with the diurnal cooling will start to see snow showers mix in
especially further from lake michigan. minor accumulations
generally around a tenth to a trace of snowfall will be expected
on grassy areas. after 10 am est, diurnal warming will once
again switch precipitation over to mostly rain showers through
the remainder of saturday. some of the showers will make it
further inland by saturday afternoon but will see a gradual
decrease in coverage as winds weaken with eastward progression
of the ridging into the western portions of the area by saturday
night into sunday morning.
the high amplitude ridging will continue to slowly push
eastward into next week allowing for a return to dry weather
along with a gradual warming trend. high temperatures will
remain in the mid to upper 40s on saturday and sunday with
slight warming each day when monday will get back into the 50s
through midweek. by thursday and friday, highs will again push
back into the low to mid 60s.
&&
.aviation /18z tafs through 18z saturday/...
issued at 1236 pm est fri nov 13 2026
cyclonic, northwesterly flow continues this afternoon and
evening with winds sustained around 10 kts. lake effect rain
showers continue downwind of lake michigan in nw indiana,
mainly in lake and porter counties, but the band is expected to
shift eastward overnight into saturday morning. have added in
prevailing rain showers at ksbn starting at 12z saturday to
account for this. dry away from lake michigan with prevailing
high end mvfr to low end vfr ceilings through the taf forecast
period. lake effect showers will come to an end later saturday
with a gradual return to clearing skies.
&&
.iwx watches/warnings/advisories...
in...none.
oh...none.
mi...none.
marine...small craft advisory until 7 pm est saturday for lmz043-046.
&&
$$
discussion...andersen
aviation...johnson