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Chesapeake Bay weather for January 29: sunny but very cold

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

National Weather Service forecast map
Map courtesy National Weather Service

Today: Sunny but very cold with a high from 20 to 25.

Tonight: Clear and cold with a low from 8 to 13.

Thursday: Mostly sunny and chilly, but not as cold with a high around 32.

Thursday Night: Mostly clear with a low around 20.

Friday: Mostly sunny and milder with a high from 40 to 45.

The extended outlook calls for more cloudiness than sun over the weekend with a chance of rain showers. Lows on Saturday & Sunday will be in the lower to middle 30s and highs will be in the middle to upper 40s. Mostly cloudy on Monday with a chance of rain or snow showers. The low will be in the lower 30s and the high will be in the upper 30s to lower 40s. A chance of rain or snow showers on Tuesday with a low in the lower 30s and a high in the lower 40s.

A storm system developed along a cold front on Monday evening and produced a swath of snow from Annapolis over to the lower Maryland Eastern Shore and south into Tidewater in Virginia. The heaviest snow fell in the Norfolk and Virginia Beach areas where 6 to 12 inches was reported. To the north, 1 to 3 inches of snow fell in the Annapolis area with a dusting to the north and west in places like Baltimore and Washington. Temperatures at sunrise this morning had dropped into the 10 to 15 degree range due to fresh snow on the ground and a clearing sky. The mercury this afternoon has rebounded somewhat into the upper 10s to lower 20s. High pressure overhead will ensure another frigid night with lows in the single digits to lower 10s by Wednesday morning; however, the high will begin to move offshore from Thursday through Saturday and a southerly flow of air will break the current cold snap. Readings will still be chilly on Thursday with highs from the upper 20s to lower 30s, but highs by Friday and Saturday may climb into the 40 to 45-degree range. Another cold front is expected to approach the area on Saturday with a few rain showers, but the front will not make much progress as it moves eastward. At the same time, waves of low pressure may move along the front during the period Sunday through Tuesday and provide the region with light, mixed precipitation. A more significant weather event may occur by the middle of next week with a possible coastal low that could produce heavy rain, snow, or mixed precipitation across the area depending on the ultimate track and intensity of the low.

On the Maryland portion of Chesapeake Bay, a Small Craft Advisory is in effect through 6 p.m. this evening. Winds tonight will come out of the northwest at 10 knots with waves around one foot. Winds on Thursday will come out of the south at 10 knots with waves one foot or less. Winds on Thursday night will come out of the south at 10 knots with waves around one foot. Winds on Friday will come out of the southwest at 10 knots with waves around one foot. Boaters should prepare for icy conditions on the bay. 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 29 is 42 degrees and the average low is 25 degrees. The records at Baltimore on this date are 75 degrees in 1975 and -7 degrees in 1963 (the extreme cold event for the month). Today's sunrise will occur at 7:16 and the sunset will occur at 5:24. 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 @chesbayweather.