Area Forecast Discussion
Issued by NWS Northern Indiana

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000
FXUS63 KIWX 221711
AFDIWX

Area Forecast Discussion
National Weather Service Northern Indiana
110 PM EDT Sat Apr 21 2018

.SYNOPSIS...
Issued at 110 PM EDT Sat Apr 21 2018

Low pressure moving south of the Ohio River will bring a chance for
a sprinkle or light shower to portions of eastern Indiana and
western Ohio late Monday afternoon through Tuesday afternoon. Highs
will be well in the 60s Monday and near 60 Tuesday.

&&

.SHORT TERM...(Tonight and Monday)
Issued at 110 PM EDT Sat Apr 21 2018

Deep upper low over wrn AR this aftn will spins out northeast into
nrn WV by late Tue. Rather vast plume of mid level moisture will
overspread the area s-n in the aftn with perhaps a sprinkle or light
shower across far srn zones late day. However given extent of old
polar airmass holding firm within low level anticyclone sprawled
through the lakes and both track of upper system well south/lack of
better moisture inflow farther north cut pops appreciably.

&&

.LONG TERM...(Tuesday through Saturday)
Issued at 110 PM EDT Sat Apr 21 2018

Aforementioned system will phase with incoming secondary wave
sharpening through the lakes Wed. Based on good model consensus will
truncate pops associated with this feature further late Tue
night/Wed.

Thereafter attention yet another following nrn stream sw disturbance
similarly progged to amplify considerably through the srn lakes late
Thu/early Fri with a period of frontally forced rain. Still modest
spread aloft seen in med range guidance and will generally follow
blended pops.

After that substantial ridging aloft builds east across the lakes
downstream of quite robust meridonal deep trough building over the
wrn US. This would point to very warm temps and dry wx manifesting
through the OH valley Days 8-11 (Sun-Wed).

&&

.AVIATION...(For the 18Z TAFS through 18Z Monday Afternoon)
Issued at 110 PM EDT Sun Apr 22 2018

VFR in wx nil conditions this period as sfc ridging holds across the
lakes.

&&

.IWX WATCHES/WARNINGS/ADVISORIES...
IN...NONE.
MI...NONE.
OH...NONE.
LM...NONE.
&&

$$

SYNOPSIS...T
SHORT TERM...T
LONG TERM...T
AVIATION...T


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