textproduct: Grand Rapids

KEY MESSAGES

- Mostly Dry Through Next Week

- Hot Temperatures Monday Through Wednesday

DISCUSSION

Issued at 151 AM EDT Sat Jul 11 2026

- Mostly Dry Through Next Week

Overall the pattern is rather dry with high pressure building in across much of the CONUS. We will need to monitor for any shortwave to ride the ridge as we are on the eastern edge in northwest flow. A couple of these periods are early Monday and then toward the end of next week. At this time not planning on any adjustments to the NBM PoPs as confidence is not high enough to make any meaningful changes. Most long range ensemble members keep any measurable precipitation out of the area.

- Hot Temperatures Monday Through Wednesday

With the building ridge and high pressure strongest over the area Monday into Wednesday we should see highs increase into the 90s across much of the area. Dew points are expected to be in the 60s with heat index values in the 90s and potentially approaching 100 on Tuesday. Unlike the last heat wave, dew point values will not be as high and we'll recover more at night with lows in the 60s to around 70. With these factors, confidence in reaching Heat Advisory criteria (heat index of 100) is low.

AVIATION /12Z TAFS THROUGH 12Z SUNDAY/

Issued at 623 AM EDT Sat Jul 11 2026

JXN may drop to MVFR briefly this morning. Watching an area of IFR ceilings around 600 feet over PTK as it expands westward. If it is able to hold together it may impact JXN and LAN this morning before lifting. Northeast winds are expected through the day today, but may be more northerly along the lakeshore this afternoon. FEW to SCT diurnal cumulus around 5000 feet are also expected this afternoon.

MARINE

Issued at 151 AM EDT Sat Jul 11 2026

Northerly winds are expected to pick back up during the later half of the afternoon into the early evening hours. Gusts may approach Small Craft Advisory criteria. Waves will be around a foot this morning but increase to around 2 to 3 feet this afternoon and evening with the higher winds. Highest waves will be south of Muskegon on the north sides of piers and breakwalls.

High pressure building into the area for next week will keep winds and waves below Small Craft Advisory and Beach Hazard Statement conditions.

GRR WATCHES/WARNINGS/ADVISORIES

MI...None. MARINE...None.