Areas of Dangerous Heat and Severe Thunderstorms

Dangerous heat will persist across the Southwest U.S. through Friday with daytime highs of 110-115°F. Heat across the southern Plains will briefly ease to near-normal by late week before returning over much of the Plains into next week. Scattered strong to severe thunderstorms are possible across parts of the Northeast U.S. on Thursday. Damaging wind, hail, and a tornado or two are possible. Read More >

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

Latest Marine Discussion:

.MARINE... A Small Craft Advisory remains in effect through 6 AM for many locations along the Chesapeake Bay due to southerly channeling. Ahead of a cold front this afternoon, winds pick up out of the south yet again, necessitating an SCA to be issued during this forecast cycle. The front will also bring the risk of strong, gusty thunderstorms, which would likely necessitate SMWs. Some thunderstorms are even possible around sunrise in the northern Bay zones, but the greatest risk for severe thunderstorms will be during the late afternoon and evening. Sub-small craft advisory level winds are expected on Friday as a cold front moves in from the northwest. While some additional thunderstorms are possible, the greater risk may be south of Maryland. Sub-SCA level north to northeasterly winds are forecast for Saturday, becoming southerly Sunday as high pressure pushes to the east. While devoid of any discernible convective activity, southerly channeling effects could bring areas near Small Craft Advisory criteria on Sunday evening into the early overnight period. Winds shift to westerly by Monday with a gradual reduction in wind gusts. Update as of: 255 AM EDT Thu Aug 27 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

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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)

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