Storm Impacting the Northwest U.S.; Fire Weather Conditions in Southern California; Severe Weather in the South

A Pacific storm is bringing areas of low elevation rain, moderate to heavy mountain snow, and high winds to the Northwest. Strong Santa Ana winds and very dry conditions are producing elevated to critical fire weather conditions in southern California. Isolated strong to severe thunderstorms are possible through early Wednesday morning across parts of northeast Texas into western Tennessee. Read More >

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

Latest Marine Discussion:

.MARINE... A warm front will lift northward through our marine areas today resulting in southeast winds channeling up the bay. Have issued a Small Craft Advisory for the lower Potomac and middle and southern portions of the bay from this afternoon until the cold front clears the area overnight. This may need expanded to include all or more of the waters. Winds likely remain below SCA criteria Tuesday into Wednesday with high pressure nearby. Winds stay below advisory levels on Thursday before ramping up by Friday as a warm front moves through. The passage of this boundary also raises the chances for showers and thunderstorms over the waterways. South to southeasterly winds may near Small Craft Advisory levels for the second half of Friday. Update as of: 340 AM EDT Mon Apr 21 2025