Area Forecast Discussion
Issued by NWS Northern Indiana

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FXUS63 KIWX 271705

Area Forecast Discussion
National Weather Service Northern Indiana
105 PM EDT Thu Oct 27 2016

Issued at 1252 PM EDT Thu Oct 27 2016

Low pressure continues to lift across the eastern Great Lakes and
the associated cloud cover will remain in place throughout the
remainder of the afternoon into this evening. Lows tonight are
expected to dip down into the upper 30s. By Friday morning, cloud
cover will slowly decrease and a shift in the winds from the south
will allow for warmer temperatures that should reach into the low
to mid 60s.


.SHORT TERM...(Today and Tonight)
Issued at 257 AM EDT Thu Oct 27 2016

Cold front associated with sw disturbance cutting through nrn
lower MI lagging back across ne IL/nw IN yet will accelerate ewd
through daybreak as system lifts out through the ern lakes.
Prefrontal trough still continues to drive sct shower development
over ern third of CWA although with a diminishing trend as low
level jet and attendant moisture flux shift east out of nw OH by
daybreak. Thus will drop prior lingering pops across the east
after daybreak.

Otherwise shallow but intense low level cold advection wing to shift
se behind departing sfc cyclone this morning. Even so delta t`s
marginal within shallow moisture layer underneath strongly subsident
regime aloft and will refrain from entertaining any pops. That said
extensive closed cell stratocu expected to result and will side with
colder guidance temps.


.LONG TERM...(Friday through Wednesday)
Issued at 257 AM EDT Thu Oct 27 2016

High zonal flow continues southward of active nrn stream flow stuck
along and north of the US/Canadian border this period. Series of low
amplitude disturbances and accompanying sfc boundaries will
generally be devoid of significant low level moisture return not to
mention northward track of appreciable dynamical forcing. However
exception exists late Sat night into Sun morning tied to
frontogenetical response developing within coupled jet structure
aloft over the western lakes northward of stalling OH river frontal
zone. Deterministic run continuity not the best but consensus
signals good enough to follow blended pop bump. Other than brief
cooling Sun remainder of the period to feature well above normal
temps...especially Sat and Tue.


.AVIATION...(For the 18Z TAFS through 18Z Friday Afternoon)
Issued at 1252 PM EDT Thu Oct 27 2016

Cloudy skies will continue throughout the remainder of the
afternoon and into this evening. MVFR ceilings are forecasted to
remain until around midnight at KFWA as surface winds diminish and
cloud cover will lift to around 10 kft after midnight. Lower
ceilings will remain in northwest Indiana due to low clouds
remaining due to a NW wind coming off of Lake Michigan. Winds will
shift to the south on Friday morning which will gradually lift the
low cloud deck for all of Northern Indiana.





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