Area Forecast Discussion
Issued by NWS Northern Indiana

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FXUS63 KIWX 221042

Area Forecast Discussion
National Weather Service Northern Indiana
642 AM EDT Tue May 22 2018

Issued at 123 AM EDT Tue May 22 2018

Lingering showers and possibly a rumble of thunder will end later
today. Dry and much warmer weather is ahead with highs mostly in
the 80s from Wednesday through the end of the week.


.SHORT TERM...(Today and Tonight)
Issued at 307 AM EDT Tue May 22 2018

Areas of dense fog have developed across the western zones and
over the lake this morning. Expect this fog to persist into the
late morning hours. Scattered showers and possibly an isolated
thunderstorm are possible into the afternoon hours primarily
across the far southeastern zones. PWAT values remain
climatologically high for late MAy so any storms that develops
would be capable of producing locally heavy rainfall. A cold front
will push through the evening to bring a close to our rain
chances through the overnight hours. High temperatures are
expected to range from 60s across the north and west with 70s
across the south and east. Overnight lows will drop into the 50s
for much of the area.


.LONG TERM...(Wednesday through Monday)
Issued at 307 AM EDT Tue May 22 2018

Upper level ridging sets up over the region by Wednesday and will
persist through the end of the work week. This will result in dry
and warmer weather with high temperatures each day being about 5
degrees above season averages for late May. As the Memorial Day
weekend starts a pattern change is on the horizon. Height falls
over the area as a pair of upper lows emanate out of Manitoba
will bring off and on rain chances back to the area into the early
parts of next week.



Have expanded the Dense Fog Advisory to encompass the entire
area through 15Z. By this point, low level mixing should quickly
dissipate the fog. also added mention of fog for Wednesday morning.
There is some potential for this fog to become dense west of I-69
given light winds and abundant low level moisture from previous
rain. Watch for update for the Wednesday morning commute.


.AVIATION...(For the 12Z TAFS through 12Z Wednesday Morning)
Issued at 631 AM EDT Tue May 22 2018

A weak area of low pressure will continue to move across northern
Indiana today. Areas of dense fog and low clouds were associated
with this system early this morning. Conditions will improve
after daybreak, but low level clouds will likely linger through
the afternoon at SBN. Winds will become light tonight with some
clearing as the high pressure area builds into the region. There
is a chance for more fog tonight given favorable radiation
conditions, but for now have left fog out given uncertainty.


IN...Dense Fog Advisory until 11 AM EDT /10 AM CDT/ this morning for

MI...Dense Fog Advisory until 11 AM EDT this morning for MIZ077>081.

OH...Dense Fog Advisory until 11 AM EDT this morning for OHZ001-002-

LM...Dense Fog Advisory until 11 AM EDT this morning for LMZ043-046.




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