Area Forecast Discussion
Issued by NWS Northern Indiana

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FXUS63 KIWX 221919

Area Forecast Discussion
National Weather Service Northern Indiana
319 PM EDT Sat Apr 22 2017

Issued at 119 PM EDT Sat Apr 22 2017

Clouds will continue to shift southeast into the overnight as high
pressure and drier air pushes in. This may allow for patchy
frost in areas that clear out quicker as temperatures drop into
the mid and upper 30s. High pressure remains in control for
Sunday allowing for sunshine and highs between 65 and 70. High
pressure keeps us dry in the early portion of the week with our
next chance for rainfall coming Wednesday. After Sunday, our
temperatures will be warming through Tuesday allowing us to be
into the low to mid 70s on Tuesday.


.SHORT TERM...(This Evening through Sunday)
Issued at 303 PM EDT Sat Apr 22 2017

High clouds have impacted much of the area, but did little to
stop highs from reaching middle to upper 50s in most spots.
Thicker clouds in SE areas have kept much cooler (upper 40s to
around 50).

Ridge axis will be slowly dropping south, but low pressure passing
well south of the region was allowing some impedance of the
ridging, resulting in concerns as to frost potential tonight.
Skies should generally clear and winds drop once again, but exact
duration of more favorable conditions worrisome. Do think some
patchy frost will materialze, especially in areas with good
drainage that can decouple early enough. Opted for a SPS to handle
frost threat for the entire area.

Temps will rebound nicely Sunday under mostly sunny skies, with
highs well into the 60s.


.LONG TERM...(Sunday Night through Saturday)
Issued at 303 PM EDT Sat Apr 22 2017

Dry forecast remains in place through at least Tuesday night and
probably most of Weds before the next trough moves towards the
western lakes. Low pressure will track along a cold front mainly
Weds ngt bringing a chance for showers and storms. Still some
concerns on timing but both GFS and EC have at least for the
moment come into better agreement. Prior to the arrival of the
system, highs will continue to moderate with the warmest day being

Temperatures will head back to more seasonable levels as warmest
air is pushed well south. Low pressure will develop in the
southern Plains and possibly impact the area over the upcoming


.AVIATION...(For the 18Z TAFS through 18Z Sunday Afternoon)
Issued at 119 PM EDT Sat Apr 22 2017

A ridge of high pressure will remain in the Plains through Sunday
morning before shifting east Sunday. This will keep north and
northeast winds and CIGs and Vsbys in VFR range. In addition,
winds will be able to gust between 15 and 25 kts today as a low
level jet moves south through the area and some diurnal mixing




LONG TERM...Fisher

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