Our recently redesigned site highlights air quality in your local area first, while still providing air. Our interactive map allows you to see the local & national weather. AirNow is your one-stop source for air quality data. Hail is a good reflector of energy and will return very high dBZ values. See the latest Washington Doppler radar weather map including areas of rain, snow and ice. National Radar-Current National Weather Forecast-Current National Weather Forecast for Tomorrow North America Water Vapor (Moisture) Weather. These values are estimates of the rainfall per hour, updated each volume scan, with rainfall accumulated over time. Depending on the type of weather occurring and the area of the U.S., forecasters use a set of rainrates which are associated to the dBZ values. The higher the dBZ, the stronger the rainrate. Washington Weather Radar AccuWeather Radar Satellite Current Conditions. Typically, light rain is occurring when the dBZ value reaches 20. Doppler Radar Washington StateCurrent rain and snow in the Southwest US. 21 hours ago Space and Astronomy See More Tonight: See a close encounter of 2 bright planets 3 hours ago Mars rover image shows mysterious ‘doughnut’ on the planet’s.
The scale of dBZ values is also related to the intensity of rainfall. The value of the dBZ depends upon the mode the radar is in at the time the image was created. Notice the color on each scale remains the same in both operational modes, only the values change. The other scale (near left) represents dBZ values when the radar is in precipitation mode (dBZ values from 5 to 75). One scale (far left) represents dBZ values when the radar is in clear air mode (dBZ values from -28 to +28). Each reflectivity image you see includes one of two color scales. The dBZ values increase as the strength of the signal returned to the radar increases. So, a more convenient number for calculations and comparison, a decibel (or logarithmic) scale (dBZ), is used. Reflectivity (designated by the letter Z) covers a wide range of signals (from very weak to very strong). "Reflectivity" is the amount of transmitted power returned to the radar receiver. It won't be a washout, but some showers and storms may produce brief downpours, thunder, and lightning.ĭownload the First Alert Weather app to stay up to date with the latest forecast.Ĭlick here to check out 7News' Weather Cameras across the DMV.The colors are the different echo intensities (reflectivity) measured in dBZ (decibels of Z) during each elevation scan. Showers and thunderstorms are likely Friday and into this weekend. An isolated shower or two may pop up on radar, with an increased chance by evening for areas west of the District. There will be a noticeable southwesterly wind Thursday, with similar air quality issues and afternoon highs in the middle 90s. From our studios in Arlington, VA ABC7 covers national and local news, sports, weather, traffic and culture and carries.
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The air quality remains at Code Orange, affecting those with respiratory or heart issues, children, and the elderly. WJLA is the local ABC affiliate for the greater Washington DC area.
Under a mix of sun and clouds, evening temperatures will fall through the 80s and settle to near 70 by dawn. From snow, to storms, to sunsets, show us your photos and video. TONIGHT: Turning Partly Cloudy Lows: 68-75 Winds: Southwest 5-10 mph THURSDAY: Partly Sunny, Breezy Passing PM Thunderstorms Highs: 90s Winds: Southwest 10-20 mph FRIDAY: Scattered Showers, Thunderstorms Highs: 85-90 Winds: Southwest 5-10 mph THIS EVENING: Scattered Clouds Temperatures: 80s to 70s Winds: Southwest 5-10 mph
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