Area Forecast Discussion
Issued by NWS Northern Indiana

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FXUS63 KIWX 211722

Area Forecast Discussion
National Weather Service Northern Indiana
122 PM EDT Tue Mar 21 2017

Issued at 120 PM EDT Tue Mar 21 2017

High pressure to the northwest continues to nudge in with dry
weather today. Temperatures will feel cooler tonight as they drop
towards 20 degrees. Quiet weather continues into Thursday as the
high passes by to the north. A warm front then pushes through
later Thursday with showers and warming temperatures. Wednesday`s
highs will only be in the 30s, but will trend warmer into Friday
with highs around 70. The weekend looks wet with above average
high temps.


.SHORT TERM...(Today through Wednesday Night)
Issued at 424 AM EDT Tue Mar 21 2017

Areas of fog had formed overnight in the wake of the upper level
disturbances accompanied with rainfall yesterday. Some clearing
with an initial weak flow will cause a delayed clearing of the
fog. Have issued a dense fog advisory until mid morning for
northeast Indiana, far south central Lower Michigan and northwest
Ohio. Northwest flow will increase later today accompanied by much
colder and drier air that will spread southeast as a large high
pressure area advances southeast out of the Canadian interior.
Temperatures will fall to around 20 degrees tonight and Wednesday
night with highs Wednesday only in the mid to upper 30s.


.LONG TERM...(Thursday through Monday)
Issued at 424 AM EDT Tue Mar 21 2017

There will be a major pattern change late this week as the upper
level longwave trof becomes established over the western CONUS.
Energy in the form of short wave trofs or upper level disturbances
will eject northeast into the Midwest and be accompanied by mild
and wet weather. Thermal profiles indicate all rain, so travel
issues are not anticipated at this time. However, given increasing
moisture available, a period or two of heavy rain is possible.
Will continue to mention minor flooding possible in the Hazardous
Weather Outlook. Raised highs 2 to 3 degrees Friday given a very
warm airmass with 850 mb temps rising close to 12C.


.AVIATION...(For the 18Z TAFS through 18Z Wednesday Afternoon)
Issued at 120 PM EDT Tue Mar 21 2017

Cold air advection continues through the region as high pressure in
Canada continues to slowly nudge in. As such, dry air should keep
VFR conditions around both TAF sites even as a wave dives south of
the region today. Light breezes up to 20 kts are possible especially
at SBN with the momentum transfer during the heat of the day.
Dry/VFR conditions continue overnight and into Wednesday as the high
pressure center passes by to the north.


LM...Small Craft Advisory from 5 PM this afternoon to 2 PM EDT
     Wednesday for LMZ043-046.



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

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