Today’s Key Messages:
- Isolated to scattered showers and storms today, mainly across southwestern Indiana
- Daily chances for showers and storms continue through Wednesday
- Temperatures gradually warming through the week with high back to near 90 by the weekend
FORECAST UPDATE... Issued at 927 AM EDT Mon Aug 4 2025 Showers continue to drift slowly across the lower Wabash Valley this morning although rainfall rates are substantially lower than prior to daybreak. Mid and high level clouds had settled across the rest of the forecast area with the inverted surface trough extending from southwest Indiana into the lower Mississippi Valley. 13Z temperatures were in the 60s in most locations. The inverted trough is likely to move little today...if anything it may shift west slightly. With the bulk of the moisture and lift associated with the feature on the eastern flank of the boundary... this will keep the potential for scattered convection into the afternoon focused across the southwest half of the forecast area and especially across the lower Wabash Valley. Residual dry air associated with high pressure over the eastern Great Lakes will stunt northward moisture advection for much of the day and keep any rain generally confined to the south and west of Interstate 74 into the early evening. While there was not any lightning earlier this morning...the addition of weak instability levels for the afternoon supports isolated to scattered thunderstorms. The primary focus remains on the potential for slow moving downpours and localized flooding which we have already seen occur early this morning across parts of Daviess and Knox Counties. The lower Wabash Valley has been the wettest part of the forecast area since early last week which heightens the flooding risk with any additional storms later today. The abundance in cloud cover will keep highs confined to the upper 70s and lower 80s. Zone and grid updates out.
