Area Forecast Discussion
Issued by NWS Northern Indiana

Home | Current Version | Previous Version | Graphics & Text | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46

FXUS63 KIWX 171951

Area Forecast Discussion
National Weather Service Northern Indiana
351 PM EDT Tue Oct 17 2017

Issued at 344 PM EDT Tue Oct 17 2017

An upper level ridge will build into the region and bring very
mild temperatures to the area over the next several days. Highs
will range from 65 to 75 through Sunday. Chances for rain increase
Saturday night ahead of a strong cold front that will bring much
colder weather to the area by Tuesday.


.SHORT TERM...(This Evening through Wednesday)
Issued at 344 PM EDT Tue Oct 17 2017

Return flow will continue through Wednesday as the center of a large
high pressure area drifts to the mid-Atlantic Seaboard. After winds
of 5 to 10 mph tonight, winds will increase Wednesday with daytime
heating and mixing to 10 to 20 mph with some gusts above 25 mph by
afternoon. Very limited moisture will be available for clouds, so
clear to mostly clear conditions will prevail.


.LONG TERM...(Wednesday Night through Tuesday)
Issued at 344 PM EDT Tue Oct 17 2017

Several more warm and dry days are ahead as an upper level ridge
builds toward the Ohio River Valley. Temperatures should rise at
least 10 degrees above normal at times through the end of the week.
The pattern should start to break down by late this weekend as a
large upper level trof becomes negatively tilted toward the Upper
Great Lakes region. It looks like the colder air will come in 2
stages, with the secondary and stronger cold front moving across the
area Monday night. Favor the GFS handling of this system that has
been reasonably consistent since Monday morning. After coordinating
with neighboring offices, have lowered Tuesday high temperatures of
the model blend significantly given very chilly air with 850 mb
temps near 0C per GFS and EC and given clouds and showers.


.AVIATION...(For the 18Z TAFS through 18Z Wednesday Afternoon)
Issued at 1258 PM EDT Tue Oct 17 2017

High pressure over the area for the forecast period will result in
clear skies and VFR conditions. Southwesterly flow is expected
this afternoon at 10 to 15 kts with gusts over 20 kts. Winds will
diminish by this evening.


LM...Small Craft Advisory until 5 PM EDT this afternoon for LMZ043-



SHORT TERM...Skipper
LONG TERM...Skipper

Visit us at

Follow us on Facebook...Twitter...and YouTube at: is the U.S. government's official web portal to all federal, state and local government web resources and services.