Heavy to Excessive Rainfall in Montana; Bering Sea Low to Bring Impacts to Southwest Alaska

Heavy to excessive rainfall is forecast across portions of Montana Wednesday, along with an isolated flash flooding threat. A Slight Risk of Excessive Rainfall (level 2 of 4) is in effect for central Montana. A Bering Sea low will continue to bring strong winds, moderate to heavy rainfall, and high seas to southwest Alaska. A North Pacific Low may impact southwest Alaska at the end of the week. Read More >

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

Latest Marine Discussion:

.MARINE... SCA conditions will persist through the night, especially south of the Chesapeake Bay Bridge on the Chesapeake Bay and below Dahlgren on the tidal Potomac River. This is in association with a tightened pressure gradient from blocking high pressure to the north and low pressure moving inland across the coastal Carolinas. As a weakening area of low pressure tracks through the area, winds will be out of the east on Wednesday while likely remaining at SCA levels for at least portions of the waters. Winds will become more northeast Wednesday, then more northerly while diminishing on Thursday. Northeasterly winds are expected to stay below SCA criteria on Friday with winds gusting 10 to 15 knots. Winds shift more easterly on Saturday with Small Craft Advisories likely as winds gust 15 to 20 knots. Update as of: 818 PM EDT Tue Sep 17 2024