Area Forecast Discussion
Issued by NWS Northern Indiana

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659
FXUS63 KIWX 220551
AFDIWX

Area Forecast Discussion
National Weather Service Northern Indiana
151 AM EDT SUN MAY 22 2016

.SYNOPSIS...
Issued at 234 PM EDT Sat May 21 2016

Clouds will continue to dissipate or move east out of the area
tonight as high pressure takes hold of the region into Tuesday.
Overnight lows the next couple of nights will be in the middle 40s
to around 50 with highs in the lower to middle 70s Sunday and 75
to 80 Monday and Tuesday. Locations near Lake Michigan will see
locally cooler conditions due to the flow off the lake.

&&

.UPDATE...
Issued at 728 PM EDT Sat May 21 2016

The last of the mid level clouds will exist eastern portions of
the forecast area setting up a quiet night with mostly clear
skies. Otherwise just some low coverage cumulus associated with
eastward advancing lake breeze boundary will also dissipate this
evening. Previous forecast is in good shape and only minor tweak
for the evening update was to lower mins just a shade based on
current sfc dew pt trends and good radiational cooling conditions.

&&

.SHORT TERM...(This Evening through Monday Night)
Issued at 234 PM EDT Sat May 21 2016

Upper low over western Lake Erie will continue to fill and move
east. Skies will quickly clear out east of i-69 by sunset allowing
for a pleasant evening with lows in the upper 40s to around 50.
High pressure will take hold to the west and slowly work east
through Monday night with mostly sunny skies and seasonable
temperatures to prevail with highs in the 70s and lows in the
middle 40s to lower 50s.

&&

.LONG TERM...(Tuesday through Saturday)
Issued at 234 PM EDT Sat May 21 2016

Longwave trough will extend from Hudson Bay southwest to the four
corners region Tuesday. A series of waves and a frontal boundary
will set the stage for afternoon and evening thunderstorms to the
west of the area through at least Tuesday if not Tuesday night.
Frontal boundary and one of the main waves will draw close to the
area for Weds/Weds eve with convection potentially forming
upstream and working in with remnants of this possibly bringing
showers and storms to the area.

Very hard to go with any pops higher than chc at this juncture with
no major upper level push to force the front into the area or large
scale pattern change. ECMWF/GFS would suggest that we remain in this
perturbed pattern into next week with chances for showers and storms
just about anytime. Have to continue with persistence as did
surrounding offices. MEX guidance continues to head well into the
80s (mid 80s Friday) with grids slowly trending that direction.

&&

.AVIATION...(For the 06Z TAFS through 06Z Sunday Night)
Issued at 146 AM EDT Sun May 22 2016

Weak high pressure along with a weak pressure gradient will help
maintain VFR conditions throughout the TAF period with winds
around 10 knots or less. Some daytime cumulus is expected, but
the cloud deck should remain scattered above 3000 feet.

&&

.IWX Watches/Warnings/Advisories...
IN...NONE.
MI...NONE.
OH...NONE.
LM...NONE.
&&

$$

UPDATE...Marsili
SYNOPSIS...Lewis/Fisher
SHORT TERM...Fisher
LONG TERM...Fisher
AVIATION...Skipper


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