


Area Forecast Discussion
Issued by NWS Northern Indiana
Issued by NWS Northern Indiana
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295 FXUS63 KIWX 072323 AFDIWX Area Forecast Discussion National Weather Service Northern Indiana 723 PM EDT Mon Jul 7 2025 .KEY MESSAGES... - Beach Hazards Statement is in effect through 10 pm EDT this evening for southern Lake Michigan beaches. - Dry and less humid into Tuesday with highs in the mid 80s. - Daily, mainly diurnally driven, shower/storm chances Wednesday through this weekend amid humid and warm conditions, best chances (60%) during the afternoon hours on Saturday. && .DISCUSSION... Issued at 215 PM EDT Mon Jul 7 2025 Widely scattered showers remain possible through the late afternoon hours near a weak front and lingering moisture axis for locations mainly along and southeast of US 24. Dry and less humid otherwise into tonight and Tuesday as the entire forecast area briefly receives influence from a low level ridge folding east through the central and eastern Great Lakes. A low amplitude shortwave, embedded in weak zonal flow, looks to track east through the area late Tuesday night into Wednesday with a renewed surge of low level theta-e. Forcing/flow is once again on the weak side with better shower/storm chances (30-50%) relegated to the afternoon hours near any outflow/lake breeze boundaries. Similar conditions on Thursday, though this time with diminished moisture quality and no obvious impulses aloft...thus lower PoPs (20-30%) for a diurnally driven shower/storm near any outflow boundary or in regions of greater differential heating. Near to slightly above normal temps and humidity levels for July otherwise with the bulk of the period(s) dry. Ensemble guidance has remained consistent in a Gulf of Alaska upper-level trough diving southeast toward the north-central US. This feature will also help kick an upper low off the California coast east toward the western Great Lakes by later Friday into Saturday. These features could come together to provide episodic convective events across the Midwest later Friday into Saturday, with Saturday appearing to the best opportunity for thunderstorms locally. && .AVIATION /00Z TAFS THROUGH 00Z WEDNESDAY/... Issued at 722 PM EDT Mon Jul 7 2025 Drier air overtakes moisture in the area this evening, but residual low level moisture may be enough to create some fog/br tonight into early Tuesday as the low level inversion forms and winds go light/calm. This will allow for LIFR flight conditions as a result of VISBY at FWA, but more like MVFR BR where the drier air has already begun to erode low level moisture. Humidity increases later Tuesday/Tuesday night and chance for showers and storms also increase that looks to take place after this TAF period, more so after midnight Tuesday night. Winds out of the north northwest become more southwesterly for Tuesday, but should stay less than 10 kts. && .IWX WATCHES/WARNINGS/ADVISORIES... IN...Beach Hazards Statement until 9 PM CDT this evening for INZ103. OH...None. MI...Beach Hazards Statement until 10 PM EDT this evening for MIZ177-277. MARINE...None. && $$ DISCUSSION...Steinwedel AVIATION...Roller