Area Forecast Discussion
Issued by NWS Northern Indiana

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FXUS63 KIWX 241735

Area Forecast Discussion
National Weather Service Northern Indiana
135 PM EDT SUN JUL 24 2016

Issued at 422 AM EDT Sun Jul 24 2016

A cold front over the upper midwest will move southeast across our
area tonight and Sunday. Increased southwest winds ahead of the
front will re-enforce the hot humid conditions across the area
today with highs expected around 90 and maximum heat index
readings around 100. Scattered thunderstorms are possible along
and ahead of the cold front through Monday. Fair weather with a
little cooler temperatures and less humidity is expected behind
the front Tuesday and Wednesday as a high pressure system moves
east across the area.


.SHORT TERM...(Today through Monday)
Issued at 422 AM EDT Sun Jul 24 2016

Main concern is excessive heat and tstm potential. Tstms which
formed north of the warm front over IA Saturday and moved ese
into our area overnight were diminishing as they encounter less
unstable airmass. Warm front will cont lifting ne across MI today
as sfc low over MN moves east to nrn Lake Michigan. Widespread convective
debris cloudiness across the area should dissipate this morning.
Increasing swly gradient will allow for good mixing and also
advect m70s dwpts into our area today. This combined with aftn
highs around 90 should result in heat index readings around our
advisory criteria of 100... so have issued a heat advisory for
this aftn. Diurnal heating should also result in airmass becoming
very unstable across the area this aftn with tstms forming along
the front to the nw psbly propagating into this unstable airmass
by this eve. Sct tstms expected to cont overnight and Monday along
and ahead of the cold front as it sinks slowly se across the cwa.
Deep layer shear remains limited ahead of the cold front keeping svr
weather threat marginal.


.LONG TERM...(Monday night through Saturday)
Issued at 422 AM EDT Sun Jul 24 2016

Sfc high will move east across the midwest tue-wed providing fair
wx with cooler and less humid conditions. A series of shrtwv`s
are expected to move through the region thu-sat along an east-west
oriented frontal boundary resulting in a prolonged period with a
chc of tstms. Temps should be near normal through this timeframe.


.AVIATION...(For the 18Z TAFS through 18Z Monday Afternoon)
Issued at 127 PM EDT Sun Jul 24 2016

Convection sliding sewd along the wmfront over MI today has
established an outflow bndry across nrn IN this aftn which will
help serve as a focus for additional activity late aftn through
this evening. An approaching fntl bndry along with daytime heating
will help to initiale tstms to the wnw and mnove into the area
later today. Mentioned VCTS at KSBN between 12Z and 06Z and at
KFWA between 00Z and 12Z. MVFR cigs expected off and on thru the
fcst pd.


.IWX Watches/Warnings/Advisories...
IN...Heat Advisory until 8 PM EDT /7 PM CDT/ this evening for

MI...Heat Advisory until 8 PM EDT this evening for MIZ077>081.

OH...Heat Advisory until 8 PM EDT this evening for OHZ001-002-004-005-




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