Forecast Details for Riva, MD

Recent Locations: Riva, MD

Overnight: Showers likely and possibly a thunderstorm before 2am, then scattered showers. Patchy fog. Otherwise, cloudy, with a low around 64. Light southeast wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tuesday: A chance of showers, with thunderstorms also possible after 2pm. Patchy fog before 10am. Otherwise, mostly cloudy, with a high near 78. Northeast wind around 6 mph becoming east in the afternoon. Chance of precipitation is 30%.

Tuesday Night: A chance of showers and thunderstorms. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 64. South wind around 6 mph. Chance of precipitation is 30%.

Wednesday: A chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm. Patchy fog before 8am. Otherwise, cloudy through mid morning, then gradual clearing, with a high near 85. South wind 6 to 8 mph becoming west in the afternoon. Chance of precipitation is 30%.

Wednesday Night: A slight chance of showers and thunderstorms, then a chance of showers after 2am. Partly cloudy, with a low around 63. Southwest wind around 7 mph. Chance of precipitation is 40%.

Thursday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 78. Chance of precipitation is 90%.

Thursday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 60. Chance of precipitation is 80%.

Friday: A chance of showers after 2pm. Partly sunny, with a high near 70. Chance of precipitation is 40%.

Friday Night: A chance of showers before 8pm. Partly cloudy, with a low around 52. Chance of precipitation is 30%.

Saturday: Mostly sunny, with a high near 69.

Saturday Night: Partly cloudy, with a low around 53.

Sunday: A chance of showers. Mostly sunny, with a high near 70. Chance of precipitation is 30%.

Sunday Night: A chance of showers. Partly cloudy, with a low around 52. Chance of precipitation is 30%.

Monday: Mostly sunny, with a high near 74.

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Current U.S. National Radar--Current

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National Weather Forecast--Current

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North America Water Vapor (Moisture)

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Weather Topic: What are Mammatus Clouds?

Home - Education - Cloud Types - Mammatus Clouds

Mammatus Clouds Next Topic: Nimbostratus Clouds

A mammatus cloud is a cloud with a unique feature which resembles a web of pouches hanging along the base of the cloud.

In the United States, mammatus clouds tend to form in the warmer months, commonly in the Midwest and eastern regions.

While they usually form at the bottom of a cumulonimbis cloud, they can also form under altostratus, altocumulus, stratocumulus, and cirrus clouds. Mammatus clouds warn that severe weather is close.

Next Topic: Nimbostratus Clouds

Weather Topic: What is Precipitation?

Home - Education - Precipitation - Precipitation

Next Topic: Rain

Precipitation can refer to many different forms of water that may fall from clouds. Precipitation occurs after a cloud has become saturated to the point where its water particles are more dense than the air below the cloud.

In most cases, precipitation will reach the ground, but it is not uncommon for precipitation to evaporate before it reaches the earth's surface. When precipitation evaporates before it contacts the ground it is called Virga. Graupel, hail, sleet, rain, drizzle, and snow are forms of precipitation, but fog and mist are not considered precipitation because the water vapor which constitutes them isn't dense enough to fall to the ground.

Next Topic: Rain