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Washington DC weather for March 12: showers and thunderstorms

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

Brian's exclusive forecast for Washington DC:

*The National Weather Service has issued a Wind Advisory in effect through Thursday morning*

Today: Mostly cloudy with showers and thunderstorms. Some storms may produce heavy rain and strong winds. The high will be 60 to 65.

Tonight: Clearing, windy, and turning sharply colder with lows in the mid to upper 20s. NW wind 10 to 20 miles per hour with higher gusts.

Thursday: Mostly sunny, breezy, and cold with a high from 30 to 35.

Thursday Night: Mostly clear and very cold with a low in the lower to middle 20s. Winds near calm.

Friday: Mostly sunny, but not as cold with a high in the upper 40s.

The extended forecast calls for a mostly sunny sky on Saturday and Sunday with lows in the mid 30s and highs in the mid 50s. A chance of mixed rain and snow on Monday with a low in the mid 30s and a high in the lower 40s. Mostly sunny on Tuesday with a low in the upper 20s and a high around 40.

A wide range of weather conditions will be experienced around Baltimore, Washington, and Annapolis over the next twenty-four hours with strong winds, rain showers, thunderstorms, coastal flooding, freezing temperatures, and snow flurries. Yet, this is not that unusual for the middle of March in this part of the country. Today's weather will begin with mild temperatures and a mostly cloudy sky. Highs may reach 60 to 65 depending on how much sun breaks through the clouds. Meanwhile, a strong area of low pressure with a trailing cold front will sweep through the region today. Warm, moist air ahead of the front will become unstable as the front advances eastward. This will result in widespread showers and thunderstorms with isolated severe weather. Isolated locations may receive heavy downpours with localized flooding, although most of us will only see light to moderate showers. As the front moves to our east overnight, a strong northwesterly flow will overspread the Middle Atlantic states and send the mercury tumbling through the 30s and into the 20s by morning. Gusty winds will make it feel even colder. On Thursday we will see more sunshine, but it will feel more like winter with highs struggling to reach the freezing point. Temperatures will fall back into the lower and middle 20s by Friday morning, although thermometer readings will rebound into the 40s on Friday. The upcoming weekend will feature sunshine and seasonable temperatures with lows in the 30s and highs in the 50s. However, a system may produce mixed rain and snow across the area Sunday night into Monday night. More information will be posted on this potential winter weather event as new data becomes available.

On the Maryland portion of Chesapeake Bay, a Small Craft Advisory is in effect until 6 p.m. this evening. A Gale Warning is in effect from 6 p.m. this evening through Thursday afternoon. Winds today will come out of the south at 10 to 20 knots with gusts over 30 knots and waves from 1 to 4 feet. Visibility may be reduced in rain showers, thunderstorms, and fog. Winds tonight will come out of the south at 10 to 20 knots with gusts over 30 knots and waves from 1 to 4 feet, then shift to the northwest at 15 to 25 knots with gusts over 30 knots and waves up to 6 feet. Visibility may be reduced in rain showers, thunderstorms, snow showers, and fog. Winds on Thursday will come out of the northwest at 15 to 25 knots with gusts over 30 knots and waves up to 5 feet. Marine information is provided only as a guide. Boaters should always stay tuned to the latest forecasts and advisories from the National Weather Service.

The average high temperature for March 12 is 52 degrees and the average low is 32 degrees. The records at Washington DC on this date are 89 degrees in 1990, and 11degrees in 1900. Today's sunrise will occur at 7:23 and the sunset will occur at 7:10. Weather data courtesy of the National Weather Service. For more weather updates, please visit my web site www.chesapeakebayweather.com, 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.