textproduct: Chicago
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
- Generally dry conditions expected through much of the upcoming work week with the next appreciable rain chances not until Friday into next weekend.
DISCUSSION
Issued at 119 PM CDT Sat May 30 2026
High latitude blocking with an anomalously strong upper ridge over central Canada will continue to result in dry conditions the rest of this weekend and much of the upcoming work week. Sfc high pressure to our north will continue to result in winds off the lake through midweek, resulting seasonably cool weather near the lake. Meanwhile, inland temperatures are expected to generally remain above average through the upcoming workweek.
Upper trough moving out into the Plains today will run into this upper ridge, and its eastward progress will likely become stunted. Some modest height falls are expected along the southern flanks of this upper ridge across the Midwest, but precipitation should struggle making east of the Mississippi River as it encounters very dry low level easterly flow. Did hang on to some slight chance pops for showers Sunday night west of I-39, but suspect even those very low pops may be too high.
High latitude ridging is finally progged to break down late in the upcoming work week as a vigorous northern stream trough tracks east across southern Canada. This should eventually allow a cold front to sag southward across the Great Lakes and into our area by next weekend. Ahead of that front, winds will likely finally turn offshore later this week bringing the summer-like warmth to the lakefront. This will be followed by an increased chance of at least some showers and thunderstorms by next weekend.
- Izzi
AVIATION /18Z TAFS THROUGH 00Z MONDAY/
Issued at 1230 PM CDT Sat May 30 2026
Brisk east-northeast winds are expected until this evening. Winds likely gusty at times, up to around 20kt, the rest of this afternoon. Easterly winds will gradually ease this evening, then likely pick up a bit again later tomorrow morning into tomorrow afternoon. Winds will be a bit lighter Sunday afternoon than this afternoon.
VFR conditions are expected through the 18z TAF cycle.
- Izzi
LOT WATCHES/WARNINGS/ADVISORIES
IL...Beach Hazards Statement until 9 PM CDT this evening for ILZ006- ILZ103-ILZ104.
IN...None. LM...Small Craft Advisory until 9 PM CDT this evening for the IL nearshore waters.
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