Area Forecast Discussion
Issued by NWS Northern Indiana

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197
FXUS63 KIWX 220751
AFDIWX

Area Forecast Discussion
National Weather Service Northern Indiana
351 AM EDT Sun Apr 22 2018

.SYNOPSIS...
Issued at 334 AM EDT Sat Apr 21 2018

A high pressure area north of the region will bring pleasant
weather today including clearing skies and highs in the low to
mid 60s. A low pressure area south of the Ohio River will move
north and bring a chance for rain from Monday afternoon through
Tuesday night. Highs will be in the 60s Monday and in the 50s
Tuesday and Wednesday.

&&

.SHORT TERM...(Today and Tonight)
Issued at 312 AM EDT Sun Apr 22 2018

A vast cloud shield had spread well ahead and northeast of an
upper lower that was over the Central Plains. This system will
continue to track east but should stay well south of the area. A
weak upper level ridge north of this system will help bring some
clearing to the forecast area today accompanied by moderating
temperatures. Under clearing skies, highs this afternoon should
rise close to normal from 60 to 65. Lows tonight will stay above
freezing near 40.

&&

.LONG TERM...(Monday through Saturday)
Issued at 312 AM EDT Sun Apr 22 2018

The upper low south of the Ohio River will lift north in a type
of fujiwhara interaction as an upstream system moves southeast
across the Northern Plains. Given model concensus, the southeast
low should lift north of the the Ohio river and spread areas of
light rain across the forecast area starting late Monday. Highs
Monday may find in very challenging to reach the upper 60s except
near the Michigan border with increasing clouds and possible
afternoon light rain farther south. Lingering areas of light rain
or showers are possible through much of the rest of this upcoming
work week with the complex interactions of additional upstream
systems. A brief intrusion of cold air is likely Saturday followed
by a quick warmup.

&&

.AVIATION...(For the 06Z TAFS through 06Z Sunday Night)
Issued at 119 AM EDT Sun Apr 22 2018

VFR flight conditions assured through the period. Thinning mid
level clouds later today as southeast OK vortex shifts east-
southeast into the TN Valley.


&&

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

$$

SYNOPSIS...Skipper
SHORT TERM...Skipper
LONG TERM...Skipper
AVIATION...Murphy


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