Area Forecast Discussion
Issued by NWS Northern Indiana

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
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
FXUS63 KIWX 181947

Area Forecast Discussion
National Weather Service Northern Indiana
347 PM EDT WED MAY 18 2016

Issued at 111 PM EDT Wed May 18 2016

High pressure will continue to provide quiet weather and gradual
warming through Friday. Highs will reach the mid to upper 60s
today and near 70 degrees Thursday and Friday. A weak upper level
system may bring increasing clouds and a few light showers to
areas mainly southeast of the Route 24 corridor late Friday into
early Saturday. Dry conditions and continued warming can be
expected otherwise this weekend into early next week.


.SHORT TERM...(This Evening through Friday Night)
Issued at 345 PM EDT Wed May 18 2016

Short term period begins tranquil as a ridge of high pressure sinks
south across the lower Great Lakes. After some diurnal cumulus this
afternoon, especially along lake breeze boundary in the western half
of the forecast area, skies will clear out overnight and winds will
calm as ridge axis approaches. Main change to forecast is overnight
low temperatures being dropped several degrees from previous
forecast. With relatively dry boundary layer and optimal radiational
cooling setup, opted to lower min temps to near or below cooler
EC/MET guidance.

Quiet weather then expected through Friday as high pressure
dominates the region. Gradual warming trend expected with highs near
70 by Friday. Also, cut PoP`s significantly Friday night associated
with ejecting southern Plains energy through the Ohio Valley. Models
continue to trend further south with forcing and moisture, with
fairly dry forecast sounding. Therefore, cut PoP`s to slight chances
during the Friday night period, mainly along/SE of US-24.


.LONG TERM...(Saturday through Wednesday)
Issued at 345 PM EDT Wed May 18 2016

Central CONUS ridging will slowly advect eastward through the Great
Lakes during the long term period. This will usher in a return flow
regime, with gradual warming temps Saturday through Tuesday, with
highs in the mid to upper 70s by midweek. This moisture return will
allow dewpoints to creep up to near 60 degrees by next Wednesday.
With the return of warmer temps and more humid conditions, quasi-
zonal "dirty" flow with several weak shortwaves will bring shower
and t-storm potential back to the area by late Tuesday, but quiet
and dry conditions are anticipated Saturday through at least
Monday night.


.AVIATION...(For the 18Z TAFS through 18Z Thursday Afternoon)
Issued at 111 PM EDT Wed May 18 2016

High pressure centered across the Northern Great Lakes and Upper
Midwest will continue to build southeast into the local area
through Friday morning. The result will be an extended period of
VFR conditions, mainly clear skies outside of some high based
diurnal CU, and light nne winds.


.IWX Watches/Warnings/Advisories...



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.