I-40 westbound at milepost 190.8 Courtesy of ADOTs Rural. I-40 eastbound at milepost 190.8 Courtesy of ADOTs Rural Weather Information System. : National Oceanic and Atmospheric Administrations : National Weather Service. A pesky, almost stationary, area of low pressure will continue to produce rain showers, gusty winds and coastal flooding in the Northeast and Mid-Atlantic on Wednesday. Pesky East Coast Low Powerful Storm Arriving in Alaska. large image WeatherBug - Flagstaff Marshall Magnet ES. Latest weather radar images from the National Weather Service. NOAA National Weather Service Flagstaff, AZ. Since hail can cause the rainfall estimates to be higher than what is actually occurring, steps are taken to prevent these high dBZ values from being converted to rainfall. The central and north sections of NAUs Flagstaff campus courtesy of Northern Arizona. Hail is a good reflector of energy and will return very high dBZ values. 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. Typically, light rain is occurring when the dBZ value reaches 20. 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. Weather Radar & Charts News Business Help. Wind direction is N at 0 mph0 km/hwith visibility of 10.00 mi16 km. The colors are the different echo intensities (reflectivity) measured in dBZ (decibels of Z) during each elevation scan. Find out the Flagstaff Gully Weather Forecast here on Weatherzone. National Weather Service Radar for Flagstaff Current Weather Conditions Clear in Flagstaff, temperature is 47☏8☌, dew point 38☏3☌, humidity 71.
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