Weather to Watch: October 23, 2026

Fog can linger where moisture, cooling and terrain reinforce one another. A Bering Sea storm can bring coastal blizzard conditions while Alaska's Interior stays quieter. These five places offer weather lessons for Friday, October 23, and the weekend, with an emphasis on comparing conditions over time and across nearby locations.

1. Upper Michigan: Fog does not clear everywhere at once

When to watch: Friday morning, October 23, with fog potentially lasting into early afternoon near northern Lake Michigan (EDT; western U.P. locations may use CDT).

NWS Marquette reports dense fog in parts of the central and eastern Upper Peninsula. Overnight cooling brought air closer to saturation, while light southerly flow supplied low-level moisture and Lake Michigan added moisture locally. Upslope flow off Lake Superior also contributed near the Keweenaw.

The forecast expects gradual lifting through the morning, but lingering fog and low cloud near Lake Michigan could delay clearing and daytime warming. One improving station therefore does not establish that the whole region has cleared.

What to notice: Compare visibility reports and webcams at several locations, alongside satellite low-cloud imagery. Use surface reports to distinguish fog at ground level from low cloud above it. Follow current advisories for travel decisions.

Source: NWS Marquette, issued Friday, October 23, at 3:24 AM EDT (07:24 UTC).

2. Western Alaska: The coast and Interior are in different parts of the storm

When to watch: Friday, October 23, into Saturday, October 24, with another coastal system expected Sunday into Monday (AKDT).

NWS Fairbanks' Friday morning update describes a front moving into the West Coast, with strong south to southeast winds and heavy precipitation. Blizzard conditions are expected for coastal areas north of the Yukon Delta Friday. Warm air arriving along the front is forecast to change snow to rain near valley level Friday evening into Saturday morning; its key messages specify a rain transition below about 1,500 feet Friday night. Snow persists at higher elevations, especially in the Brooks Range.

Warm air arriving with the front helps change precipitation type, while wind during the snowy stage can sharply reduce visibility. The same discussion keeps the central and eastern Interior relatively quiet through the weekend. Coastal water levels are another concern: the highest impacts are expected in Hooper Bay, while the forecast describes more limited flooding elsewhere. Further systems may keep water elevated and renew erosion concerns; location and shoreline orientation matter.

What to notice: Compare precipitation type, temperature and visibility at the same station through time, then check the separate mountain and coastal forecasts. Quiet weather in Fairbanks does not describe conditions on the Seward Peninsula.

Source: NWS Fairbanks, issued Friday, October 23, at 4:10 AM AKDT (12:10 UTC).

3. New Mexico: Moderate new rain can matter after a wet day

When to watch: Friday afternoon and evening, October 23, with further heavy-rain concerns during the weekend (MDT).

NWS Albuquerque forecasts showers and storms mainly from the Continental Divide eastward Friday. Wind shear, the change in wind with height, and instability may support severe storms during the afternoon and evening. Large hail and damaging winds are the main severe-weather threats; an isolated tornado or two cannot be ruled out.

Flood risk also depends on what fell before the next cell arrives. The discussion reports substantial Thursday rainfall in areas from Mount Taylor toward the Jemez and San Juan Mountains, where even moderate additional rain could cause rapid runoff. It also reports continuing river flooding in parts of northwest New Mexico. Those river conditions and the forecast flash-flood risk are related but distinct.

What to notice: Compare new rainfall with the previous day's accumulation, and check river forecasts separately from storm warnings. An isolated weaker-looking rain area can still matter over already saturated ground.

Source: NWS Albuquerque, issued Friday, October 23, at 2:11 AM MDT (08:11 UTC). Earlier rainfall and river flooding are attributed to the discussion, not independently audited here.

4. Puerto Rico: Local storm development and incoming swell are separate signals

When to watch: Friday, October 23, through Saturday, October 24, with showers and storms possible through the weekend (AST).

NWS San Juan expects afternoon convection to favor interior, northern and western Puerto Rico, with passing showers affecting windward areas overnight and during the morning. Sea-breeze convergence and terrain can focus new storm development. Even if individual showers move faster as low-level winds increase, repeated development along those boundaries can still produce locally heavy rain.

At the coast, a long-period north to northwest swell brings a different hazard: breaking waves and rip currents along exposed shores. The local afternoon thunderstorm cycle does not determine when that incoming swell ends. Some drying is possible Sunday, but the extent remains uncertain because moisture forecasts differ.

What to notice: Use radar loops for repeated rain development and official marine and beach forecasts for swell. Compare remote observations without approaching exposed shores to watch the waves.

Source: NWS San Juan, corrected Friday, October 23, at 7:20 AM AST (11:20 UTC), with forecast sections issued at 3:50 AM AST.

5. Northeast Florida: Repeated high tides can prolong coastal impacts

When to watch: Increasing hazards Friday, October 23, with the main coastal flooding concern Saturday through Monday, October 24–26 (EDT).

NWS Jacksonville expects strengthening high pressure to the north and a coastal trough offshore to tighten the pressure gradient. Persistent northeast winds can raise coastal water levels while the astronomical tide cycle also increases. The discussion expects the peak tidal flooding Sunday and Monday along affected Atlantic, Intracoastal and St. Johns River locations.

Rain adds another timing question. Repeated shower bands may produce locally heavy rain along the northeast Florida coast Saturday afternoon and evening, potentially overlapping the evening high tide. Inland southeast Georgia can remain much drier while coastal water, surf and erosion concerns persist.

What to notice: Use tide gauges for observed water levels, radar for shower paths and official local forecasts for impacts. Compare successive high tides at the same gauge. A gauge height above a tidal datum is not the depth of water above a road.

Source: NWS Jacksonville, issued Friday, October 23, at 4:06 AM EDT (08:06 UTC).

This October 23 edition was selected using discussions available by 6:30 AM Eastern. Before publication, Alaska was updated with its Friday morning discussion and San Juan's corrected discussion was checked. Issuance times are shown above. These are dated forecasts and attributed reports; conditions and guidance may change. For current forecasts and warnings, visit weather.gov.