textproduct: Northern Indiana
This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.
KEY MESSAGES
- Seasonably cool temperatures will be accompanied by frost tonight.
- A short period of rain is ahead Friday and Friday night.
DISCUSSION
Issued at 317 AM EDT Wed May 6 2026
Anomalously chilly air will prevail over the region through Friday as an upper low lingers over Hudson Bay. This low brought showers and chilly air to the region yesterday behind a cold front. The cold air will bring the likelihood of frost formation tonight especially north of Highway 30 as temperatures drop into the 30s. Highs both today and Thursday will only be in the 50s. Pondered headlines for this upcoming night with surrounding offices - the consensus was to defer any headlines to the dayshift. The possibility, extent and amount of cloud formation tonight under the high-based subsidence inversion will make low temperature forecasts challenging.
A milder and more unsettled pattern is farther ahead into early next week as the upper level trof over the Great Lakes region shifts east and as the upstream flow becomes more zonal. Ample upper level disturbances will travel east in the upper flow and bring chances for showers. At this time, severe weather chances appear low.
AVIATION /12Z TAFS THROUGH 12Z THURSDAY/
Issued at 625 AM EDT Wed May 6 2026
A low level trough axis shifting across the southern Great Lakes has resulted in better low level fgen forcing slipping south of the terminals with an increase in low level dry air advection. The potential of measurable rain has come to an end at the terminals this morning. After some brief clearing or partial clearing this morning, additional mid level cloud cover is expected today as a series of sheared short waves approach in westerly flow regime associated with upstream positively tilted upper trough. In addition the mid clouds, some sct-bkn VFR low clouds are possible this afternoon. A weak westerly gradient will be maintained today allowing some northwest winds around 10 knots, eventually becoming light and variable early this evening with loss of daytime mixing and the approach of low level ridge axis from the Mid MS Rvr Valley.
IWX WATCHES/WARNINGS/ADVISORIES
IN...None. OH...None. MI...None. MARINE...None.
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