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Chesapeake Bay weather for January 19: mild Monday with snow possible Tuesday

National Weather Service forecast map
National Weather Service forecast map
Map courtesy National Weather Service

Brian's exclusive forecast for Baltimore, Annapolis, and northern Delmarva:

Tonight: Variable cloudiness with a low in the lower 30s.

Monday: Clouds and sun. Milder with a high in the upper 40s.

Monday Night: Becoming cloudy and turning cooler with a low around 30.

Tuesday: Cloudy and cold with light snow or snow showers. Temperature falling into the mid 20s.

The extended outlook calls for sunny but cold conditions on Wednesday with a low around 10 and a high near 22. Sunny and cold on Thursday with a low around 12 and a high near 30. Clouds and sun on Friday with a low around 18 and a high near 35. Clouds and sun on Saturday with a low around 20 and a high in the upper 30s.

The evening weather map shows an area of high pressure to our south and a cold front moving eastward from the Great Lakes region. The air between the two systems will be relatively mild with lows by Monday morning only in the lower 30s, about ten degrees warmer than this morning's lows. An arctic cold front will approach the region from the west on Monday. Temperatures will climb into the 40s to near 50 ahead of the front during Monday afternoon, but then drop into the upper 20s by Tuesday morning. Low pressure will move into the region on Tuesday and produce light snow or snow showers with light accumulations possible, particularly across southern Maryland and southeast Virginia. Temperatures will reach their maximum levels early Tuesday morning, and then fall through the 20s during the day with an increasing north wind. The sky will clear on Tuesday night. Cold high pressure and diminishing winds will enable the mercury to drop into the lower to middle 10s by Wednesday morning. Cold high pressure will dominate the weather pattern from Wednesday through Friday. Highs on Wednesday will struggle to climb into the lower 20s with highs on Thursday in the upper 20s to lower 30s and highs in the lower to middle 30s on Friday.

On the Maryland portion of Chesapeake Bay, a Small Craft Advisory is in effect through Monday afternoon. A Small Craft Advisory goes into effect late Monday night. Winds on Monday will come out of the southwest at 10 to 15 knots with gusts over 20 and waves from 1 to 3 feet. Winds on Monday night will come out of the north at 10 to 15 knots with gusts over 20 and waves from 1 to 3 feet. Winds on Tuesday will come out of the north at 10 to 15 knots with gusts over 20 and waves from 1 to 3 feet. Visibility may be reduced in snow and fog. Winds on Tuesday night will come out of the northwest at 10 to 20 knots with gusts over 25 knots and waves from 1 to 3 feet. Marine information is provided as general guidance. Boaters should always stay tuned to the latest forecasts and advisories from the National Weather Service.

The average high temperature for January 19 is 41 degrees and the average low is 24 degrees. The records at Baltimore on this date are 69 degrees in 1951 and -5 degrees in 1994. Today's sunrise will occur at 7:23 and the sunset will occur at 5:12. Weather data courtesy of the National Weather Service. For more weather updates, please visit my Chesapeake Bay Weather page on Facebook, and if you're heading to Ocean City feel free to check out my Ocean City MD Weather page on Facebook. You can also follow me on Twitter