Messages
Showers and Thunderstorms Possible Late Monday into Tuesday
Grand Rapids (GRR) — the National Weather Service forecast in plain English · Plaincast
Plaincast
What the forecast actually says — NWS Area Forecast Discussions, decoded into plain English.
Revised in 3 passages since the 1:38 AM discussion. See every revision.
Discussion
Surface high pressure moves east on Saturday and return flow brings some moisture. There could be a few showers on Saturday and Saturday night. There is enough ensemble support to bump up the blend-of-models forecast chance of rain from around zero to slight/low chance across the northern zones where the better moisture and lift is located.
Showers and Thunderstorms Possible Late Monday into Tuesday
A shortwave trough ejects out of the northern Rockies with a surface low tracking into Canada early next week. A trailing cold front is expected to touch off showers and thunderstorms Monday night and Tuesday. Instability and deeper moisture is across northern Lower Michigan pooling ahead of the cold front, which sinks south through the forecast area on Tuesday. Precipitable water surges close 2 inches, so heavy rain potential is there as the front will be moving slowly and MBE vectors are less than 10 knots.
The front stalls across the southern zones on Wednesday, with a rainy stretch of weather possible through Thursday as a surface low tracks along the front across southern Lower Michigan.
This is the plain-text edition, decoded without AI so it loads anywhere. The full Plaincast experience — plain-English summaries beside the annotated original, with the forecast changelog — loads automatically with JavaScript, or open the interactive edition.
Data from the National Weather Service. Translated by Claude. About · For developers & agents · Subscribe: RSS feed for this office · Source on GitHub