Sidney, Indiana Weather Forecast Discussion

507
FXUS63 KIWX 152245
AFDIWX
Area Forecast Discussion
National Weather Service Northern Indiana
645 PM EDT Mon Sep 15 2025
.KEY MESSAGES...
- Remaining warm and dry through Friday with highs in the mid to
  upper 80s.
- Rain chances (20-40%) return this weekend.
&&
.DISCUSSION...
Issued at 209 PM EDT Mon Sep 15 2025
Stretch of dry/warm wx will persist this week. The feature
driving this is a high magnitude upper level ridge, and its
associated stable/dry column, currently centered over the Great
Lakes. This ridge gradually flattens with time this week as
northern stream height falls eventually work east through
Ontario and Quebec with no impact locally. Light easterly winds
will persist at the sfc otherwise through mid-week on the
southwest fringe of sfc high pressure. Some very weak nocturnal
moisture flux off of Lake Erie in this regime could allow patchy
fog/stratus early tomorrow across ne IN and nw OH.
The next opportunity for rain doesn`t arrive until this weekend when
a disjointed upper level trough releases east into the region. NBM
PoPs are low, generally 20-40%, given lingering differences in the
timing/track of the upper system and frontal zone.
&&
.AVIATION /00Z TAFS THROUGH 00Z WEDNESDAY/...
Issued at 645 PM EDT Mon Sep 15 2025
Primarily VFR conditions will persist through the period given
strong mid/upper level ridge and very dry/stable airmass. The
only exception will be some brief/shallow ground fog at KFWA
around sunrise (very similar to this morning) given light
easterly winds and ideal radiational cooling.
&&
.IWX WATCHES/WARNINGS/ADVISORIES...
IN...None.
OH...None.
MI...None.
MARINE...None.
&&
$$
DISCUSSION...Steinwedel
AVIATION...AGD

NWS IWX Office Area Forecast Discussion