Extreme Heat Continues; Severe Thunderstorms into Upper Midwest; Strong Bering Sea Storm

Wildfires and poor air quality continue for the Pacific Northwest, Rockies and extended into the Plains. Severe thunderstorms possible for the northern Plains and upper Midwest on Monday along a frontal boundary. Another boundary will focus showers and thunderstorms for the eastern seaboard with localized heavy rainfall possible. For Alaska, a strong Bering Sea storm will bring winds and rainfall. Read More >

Map of estimated Water Temperatures
List of Water Temperature observations (at bottom of page/list)

Latest Marine Discussion:

.MARINE... Given southerly channeling effects, Small Craft Advisories remain in effect across all waters. Aside from the upper/middle tidal Potomac, these remain in place through the overnight hours. While a strong thunderstorm can't be ruled out through the night, recent radar trends suggest activity will mainly consist of showers and perhaps a few lightning strikes. Southerly gusts decrease to around 10 to 15 knots for much of Monday, although some upticks could approach advisory levels at times. Otherwise, another round of stronger storms are possible during the afternoon/evening hours. Further Special Marine Warnings may be necessary which would lend itself to hazardous boating/swimming conditions. Sub-SCA level winds are expected out of the north and northeast Tuesday. SCA level southerly channeling is expected Wednesday through Friday for portions of the waters. A few showers & thunderstorms are possible over the waters during this period due to a stalled front nearby. SMWs may be needed to encompass this threat during the afternoon and evening hours. Update as of: 900 PM EDT Sun Aug 2 2026

Click/Tap on any zone on map below for marine forecast:
Click here for the Synopsis and text forecast.

[LWX marine zones]

NEW FORECAST TOOL: Experimental NWS Marine Forecast Portal

Click on any marine zone on this map to go to a detailed hour-by-hour weather forecast for the next 7 days

Please provide feedback to cody.ledbetter@noaa.gov

------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Marine Forecasts for the Lower Chesapeake Bay and Eastern VA Rivers

(These forecasts are provided by the Weather Forecast Office in Wakefield, VA)

Lower Chesapeake Bay

Smith Point to Windmill Point

Windmill Point to New Point Comfort

New Point Comfort to Little Creek

Little Creek to Cape Henry Incl. CBBT

Eastern VA Rivers

Rappahannock River (Urbanna-Windmill Pt)

York River

James River (Jamestown-James River Bridge)

James River (James River Bridge-HRBT)

------------------------------------------------------------------------------------------------------------------------------------------------------------------------