January 17, 4 PM: Winter Storm Watch Area-Wide for Saturday to Sunday Morning

The entire viewing area is under Winter Storm Watch

Posted: Jan 17, 2019 3:17 PM
Updated: Jan 17, 2019 4:42 PM

Snow reports from this morning range from 0.5-1.6".  I measured 0.7" at West Lafayette.  Thank you spotters for your reports!  Some light icing was reported, as well.

Now, visibilities continue to drop with thickening fog (with some drizzle) with temperatures 33-37 as of 3:30 p.m.

Dense Fog Advisory is up for central & eastern Illinois, but that dense fog is making migration eastward.

Widespread dense fog will continue to develop right through afternoon & last into the evening.  A period of visibilities of 0.25 mile or less are possible for parts of the viewing area for a while this evening.

However, with time, it will become much more patchy & overall visibilities will improve as the wind kicks up some after 8 p.m.  A few flurries & patches of light freezing drizzle are possible into the night.  A few slick spots are possible as temperatures drop into the 20s.

Friday just be mostly cloudy to cloudy with highs near 32.

Winds will kick up with time Friday night with lows near 26.  East winds will increase to 15-30 mph after 3 a.m.

Winter Storm Watch is up viewing area-wide for Saturday & into Sunday.

Winter Storm Watches & Warnings are up from South Dakota to Maine.

Snow should overspread area after midnight Friday.

It should snow, heavy at times, through Saturday.  The snow may mix or change to a brief period of sleet & freezing rain in Fountain & Montgomery counties.  It is not out of the question that some sleet mixes in the snow briefly in Warren, Tippecanoe & Clinton counties.

This could cut snowfall totals a bit in Fountain & Montgomery counties to under 6", depending on how much sleet/freezing rain fall & how long it lasts there.

Otherwise, 6-8" looks good for snowfall totals.  In the most-intense banding features, a few +8" amounts are possible.  It is a bit unclear where these mesoscale bands will set up (like the last storm).  +12" should occur just northwest of our area in parts of Iowa, northeastern Missouri & northern Illinois where a very intense deformation zone band will set up.  Also, lake enhancement (with the northeast wind) in the Chicago area will up totals there to locally +12".

Significant blowing & drifting snow will occur during the storm & afterward as the snow winds down Saturday night.  Even to Sunday, there will be substantial blowing & drifting snow right through the morning to midday with some lake effect snow showers & flurries around that may locally deposit a fluffy 0.5-1".

Wind gusts of 35-40 mph are likely.  A few isolated 40-45 mph cannot be ruled out.  Drifts will reach a couple to a few feet deep in wide-open, rural areas with such wind.

There are projected gusts in knots. 

Bitter cold will follow the storm with lows in the single digits to near 10 by Sunday morning with wind chills to -14.  Highs will only reach around 14 for Sunday.

Lows of -8 to 0 are likely by Monday morning with clear skies, diminishing winds & some patchy freezing fog with heavy frost.

West Lafayette
Overcast
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Hi: 47° Lo: 36°
Feels Like: 41°
Kokomo
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Hi: 45° Lo: 35°
Feels Like: 41°
Rensselaer
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Hi: 41° Lo: 30°
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Fowler
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Hi: 41° Lo: 32°
Feels Like: 41°
Williamsport
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Hi: 45° Lo: 36°
Feels Like: 38°
Crawfordsville
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Hi: 46° Lo: 38°
Feels Like: 39°
Frankfort
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Hi: 46° Lo: 37°
Feels Like: 42°
Delphi
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Hi: 45° Lo: 35°
Feels Like: 41°
Monticello
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Hi: 45° Lo: 33°
Feels Like: 41°
Logansport
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Hi: 44° Lo: 33°
Feels Like: 41°
Cool, wet evening....rain ending, but fog redeveloping.....
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