FXUS63 KIWX 021723 AFDIWX Area Forecast Discussion National Weather Service Northern Indiana 123 PM EDT Wed Jul 2 2025 .KEY MESSAGES... - Both temperatures and humidity will slowly increase over the next several days, peaking out Saturday and Sunday with highs near or above 90. - An isolated shower or storm is possible during the late afternoon and evening hours of Thursday, with somewhat better chances Saturday night and Sunday. - Slightly cooler arrives next week. && .DISCUSSION... Issued at 420 AM EDT Wed Jul 2 2025 A series of weak disturbances will move through the NW flow aloft over the next couple of days. The majority of convection over the next couple of afternoons will develop across portions of MN and IA and then track either E or SE. Modest instability will be in place with overall shear lacking across our area. That being said, can't fully rule out a stray shower or storm, especially Thursday afternoon/evening near Lk MI where a bit of a lake breeze may take shape or upstream storms try to move in towards 00Z Fri. SPC has maintained the marginal risk for Thursday, but overall threat should rather limited and confined to locally gusty winds if storms can develop. Upper level ridging will strengthen with heights climbing above 590 dm to put a cap on most convective chances until later Saturday as the ridge dampens somewhat as slightly stronger waves move through the flow. Can't 100% eliminate a threat for an isolated storm during peak heating Fri afternoon, but capping most likely to win out. 850 mb temps AOA 20 C will bring temperatures near or above 90 as dewpoints remain somewhat lower than our last big round of heat/humidity. Should remain shy of advisory criteria, but will need to watch as we get closer. As mentioned, chances for showers and storms will increase Sat night into Sunday, but even so many areas will see little overall impacts. Temperatures and humidity values will lower somewhat again into next week with highs back into the 80s. && .AVIATION /18Z TAFS THROUGH 18Z THURSDAY/... Issued at 122 PM EDT Wed Jul 2 2025 As a shortwave moves through in the flow, increased moist advection allows low to mid level cloudiness, but ceilings appear to be high enough to keep VFR conditions prevailing. Southwest winds continue to stay below 10 kts through the period. && .IWX WATCHES/WARNINGS/ADVISORIES... IN...None. OH...None. MI...None. MARINE...None. && $$ DISCUSSION...Fisher AVIATION...Roller