264 FXUS63 KIWX 060602 AFDIWXArea Forecast Discussion National Weather Service Northern Indiana 202 AM EDT Sat Sep 6 2025
.KEY MESSAGES...
- Mainly dry over the next 7 days. Only a 20% chance of showers or sprinkles north of US-6 Saturday night.
- Cool temperatures this weekend trend warmer, into the 80s, by the middle of next week.
- Dangerous swimming conditions expected for Lake Michigan beaches through Sunday.
&&
.DISCUSSION... Issued at 244 PM EDT Fri Sep 5 2025
A 992mb low is swirling over northern Ontario, its cold front now east of our area. Breezy westerly wind today subsides not only with a loss of daytime mixing but with the 45 knot 850-mb jet departing to the east as well. Tonight, clouds associated with a weak low moving through the mid-Mississippi will provide some insulation overnight helping to keep temperatures from bottoming out, but still nearly 10 degrees below normal.
Broad troughing in remains in place through the weekend with this large upper-low lingering over the eastern Great Lakes. Can`t rule out lake effect showers Saturday night or Sunday as an embedded shortwave ripples east across Lake Michigan. Duration will be brief with high pressure quickly coming in to disturb equilibrium levels. High pressure remains in place through the coming week promising dry conditions (and an increasing risk of drought). Temperatures will gradually warm back into the 80s by midweek as the western US ridge finally tracks east.
&&
.AVIATION /06Z TAFS THROUGH 06Z SUNDAY/... Issued at 152 AM EDT Sat Sep 6 2025
VFR conditions with westerly winds are expected through the period. Gusts up to around 22kts are possible during the afternoon hours. Cloud cover will be variable between 5-10kft at times-with general high clouds around.
&&
.IWX WATCHES/WARNINGS/ADVISORIES... IN...Beach Hazards Statement until 4 AM CDT early this morning for INZ103. OH...None. MI...Beach Hazards Statement through Sunday afternoon for MIZ177- 277. MARINE...Small Craft Advisory until 5 PM EDT Sunday for LMZ043-046.
&&
$$
DISCUSSION...Brown AVIATION...MCD
NWS IWX Office Area Forecast Discussion