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 47 48 49 50

FXUS63 KIWX 101935 CCA

Area Forecast Discussion...corrected
National Weather Service
Northern Indiana 220 PM EST Sat Mar 10 2018

Issued at 220 PM EST Sat Mar 10 2018

Dry and seasonably cool conditions will persist this weekend. Highs
will be around 40 under just mostly clear skies. Chances for
periodic snow showers will return Monday though Wednesday. The best
chances for snow will be Monday afternoon and again Tuesday
afternoon through Tuesday night. Warmer weather returns by the end
of the work week.


.SHORT TERM...(Tonight through Sunday Night)
Issued at 220 PM EST Sat Mar 10 2018

Quite this period as sfc ridge persists across the Great Lakes.
Expect another cold night with good radiational cooling underneath
sfc ridge axis and within superbly dry airmass in place.

Vigorous upstream sw trough over wrn SD this aftn will continue sewd
into the wrn lower OH valley by late Sunday with just some glancing
high level cirrus across the south. Expect temps similar to this
aftn within steady state low level thermal trough anchored across
the lakes.


.LONG TERM...(Monday through Saturday)
Issued at 220 PM EST Sat Mar 10 2018

Aforementioned sw trough expected to phase this period with steep
trajectory nrn stream disturbance dropping through the ern lakes
Tue. This in turn wraps an even colder airmass south across the
lakes/OH valley Tue-Wed with periods of snow showers...namely Mon
aftn with trough passage aloft and late Mon night-Tue night as low
level thermal trough maximizes across the wrn lakes. Should be
plenty of moisture within large scale/deep cyclonic flow aloft and
bumped pops appreciably over prior. In addition ideal long axis
fetch within fairly deep cold advection wedge looks to promote a
decent lake response Tue night. Combo/overlap of the two will bring
several inches to lake effect zones by Wed am.

Thereafter ern NOAM heights flatten with substantial thermal
moderation spreading through the OH valley Thu-Fri ahead of
progressive wave skirting srn Canada. Some rain likely with swwd
trailing frontal zone late Fri-early Sat otherwise remainder of the
period looks dry.


.AVIATION...(For the 18Z TAFS through 18Z Sunday Afternoon)
Issued at 1209 PM EST Sat Mar 10 2018

VFR flight conditions for this forecast period with light winds
out of the ENE.





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.