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Forecast Discussion for Indianapolis, IN
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997 FXUS63 KIND 151048 AFDIND Area Forecast Discussion National Weather Service Indianapolis IN 548 AM EST Sat Nov 15 2025 .KEY MESSAGES... - Widespread highs in the 70s on Saturday along with wind gusts up to 35 mph - Mostly dry over the weekend with increasing rain chances Monday night into Tuesday - Additional rain chances Thursday into Friday && .SHORT TERM (Today and tonight)... Issued at 259 AM EST Sat Nov 15 2025 A low pressure system will be moving across Canada, north of the Great Lakes, through the short term, strongly influencing the weather across central Indiana. Ahead of the associated cold front, WAA from SW flow will bring well above normal temperatures today. Based off of yesterday`s overachieving temps, have gone above guidance for today, with low to mid 70s expected for much of the area. There is a chance that temps get even warmer today, but given the expected cloud coverage confidence wasn`t high enough to inch warmer at this time. Indy may even have a run at tying or breaking it`s high record for the date, as the current record is 74 set in 1971. The front will also bring breezy winds throughout the day as well with wind gusts of 25 to 35 mph possible mid-morning to mid- afternoon. Models shows the cold front moving across central IN late tonight and through the overnight hours. Along the front, there will be limited moisture to work with as well as displaced forcing, so we will likely not see much rain with this system. Can`t rule out some sprinkles or light rain along the front and best chances for measurable precipitation will be in the far east and SE portions of the forecast area. Behind the front, temperatures will drop from north to south with morning lows in the upper 30s to low 40s. && .LONG TERM (Sunday through Friday)... Issued at 259 AM EST Sat Nov 15 2025 Sunday Through Tuesday. Any lingering precipitation Saturday night will come to an end by daybreak Sunday with the surface flow becoming northwesterly. There is some model differences as to how strong the exiting trough will be as it moves into the Northeastern states which will impact the strength of the CAA and resulting temperature drop. Generally models are honing in on the stronger low solution which could bring northwesterly gusts up to 25 mph and temperatures in the low 50s along with dry conditions and clear skies. Quiet weather will continue into Monday with broad ridging across the Ohio Valley. Conditions will then begin to shift Monday night into Tuesday as a eastward progressing trough interacts with southerly Gulf moisture surging into the area. After several days of very inconsistent model runs, things are beginning to coalesce around a solution of a closed low transitioning into a broader trough with precipitation across central Indiana Tuesday. Exact details remain uncertain with the potential for two axis of heavier precipitation, the first associated with a warm front along the Ohio River and the second being the better forcing associated with the low to the north near Lake Michigan. As higher resolution modeling becomes available, confidence will increase as to where this axis will set up but generally expect rain amounts to be around 0.25-0.5" with a low-end potential for isolated amounts up to an inch. Wednesday Through Friday. Precipitation is expected to end by Wednesday morning outside of a low-end chance for some lingering light rain/drizzle if the low clouds stick around for a longer than currently expected period. Focus then will shift to a low pressure system exiting the Four Corners Region and tracking it as it rapidly strengthens as it moves into northeast into the Plains. This system has a much better chance in bringing appreciable rain to the area along with a low-end chance for thunderstorms or even an isolated stronger storm. Many of the details remain uncertain, but there is good agreement within the ensembles of this more significant system. && .AVIATION (12Z TAF Issuance)... Issued at 548 AM EST Sat Nov 15 2025 Impacts: - Southwesterly wind gusts up to 30kts through sunset, up to 20ks afterwards Discussion: VFR conditions expected through the TAF period with cloud coverage gradually increasing through the day before decreasing tonight. Any lingering LLWS will come to an end by 12Z as the surface winds begin to increase. Southwesterly winds will begin to gust to around 20kts by 14Z with gusts as high as 30kts through the afternoon hours. Gusts will continue at LAF and IND through the night with less frequent gusts at HUF and BMG. There is a non-zero chance for showers 22Z to 02Z but chances are too low for even a PROB30 mention at this time. && .IND WATCHES/WARNINGS/ADVISORIES... None. && $$ SHORT TERM...KF LONG TERM...White AVIATION...White |
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