IND issues Area Forecast Discussion (AFD) at Oct 23, 9:42 AM EDT900
FXUS63 KIND 231342
AFDIND
Area Forecast Discussion
National Weather Service Indianapolis IN
942 AM EDT Fri Oct 23 2026
.KEY MESSAGES...
- Dry yet pleasant fall weather continues through early next week
seasonably cool early mornings, above normal afternoon highs
- Patchy fog will occur in low lying areas late night/early mornings
through Sunday morning
- A wetter pattern may take shape towards the Halloween weekend
&&
.FORECAST UPDATE...
Issued at 941 AM EDT Fri Oct 23 2026
The forecast remains in good shape with only minor adjustments
needed this morning. Latest observations depict patchy fog
development in climatologically favored locations has mixed out
under sunny skies. Surface high pressure across the region will
continue to promote quiet weather conditions through the day.
Look for plentiful sunshine to warm temperatures into the low 70s
once again while winds remain light out of the southeast. Diurnal
mixing should result in min RH values of around 30 to 40 percent
during the afternoon.
&&
.DISCUSSION (Today through Thursday)...
Issued at 308 AM EDT Fri Oct 23 2026
Pleasant yet increasingly dry pattern to continue through at least
early next week, if not the entire forecast period...due to several
factors, starting with stacked ridging over Indiana. Western North
American trough splitting into active northern jet and southern
cut-off will promote strengthening H500 ridging, which will extend
from central Mexico to much of southeastern Canada by the start of
the weekend, placing the local region under its eastern half. While
same, nearly-stationary surface high pressure presently occupying
most of the continent's eastern half...shifts to the Atlantic coast
by Monday while still providing dry lower levels back into the
Midwest.
This will translate to much of the same fair conditions seen so far
this week, with subtle moderating trend to continue as thermal ridge
axis aloft sliding over Indiana Sunday-Monday brings unseasonable
warmth nearing 75F. Remarkably persistent calm/light winds should
also continue to be the rule as pattern directs more active weekend
storm well north across interior Canada. Likely a few clouds will
return as small weaknesses embedded in the upper ridge cross the CWA.
Patchy late night/early morning fog will also be a mainly isolated
hazard through Sunday morning.
The latter half of the period will find the impressive ridge
shrinking southward, allowing the next chilly air mass to slide east
along the US-Canada border and smaller forcing to take a northern
path into the Upper Midwest. Expect partly to mostly cloudy skies
from associated fetch of moisture from southwest...yet continued
mild conditions amid light southerly breezes. Low confidence in
any precipitation in central Indiana through Thursday...ahead of
some rain potential around the Halloween weekend.
&&
.AVIATION (12Z TAF Issuance)...
Issued at 554 AM EDT Fri Oct 23 2026
Impacts:
- MVFR VIS in patchy ground fog possible until 13Z outside of KIND
Discussion:
Broad, stacked ridge will continue to prevail over central Indiana
and vicinity through Saturday morning, allowing only a few high
clouds and a light easterly breeze generally below 7KT this
afternoon.
Carbon-copy of recent patchy and at times transient ground fog near
KLAF/KHUF/KBMG both through 13Z this morning and again pre-dawn
Saturday.
&&
.IND WATCHES/WARNINGS/ADVISORIES...
None.
&&
$$
UPDATE...Melo
AVIATION...AGM
DISCUSSION...AGM
Source:
IND issues Area Forecast Discussion (AFD) at Oct 23, 9:42 AM EDT---------------
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