![]() Observed Precip Forecasts Local Graphical Aviation Marine Rivers & Lakes Hurricanes Severe Weather Space Weather Fire Weather Text Bulletins By State By Message Type National Forecast Models Numerical Models Statistical Models. 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. A strong thunderstorm will impact portions of northwestern Isanti county through 545 PM CDT for Isanti County in MN.At 510 PM CDT, Doppler radar was tracking a strong thunderstorm 8 miles northwest of Cambridge, moving northwest at 15 mph. UV Alerts Observations Radar Satellite Snow Cover Surface Weather. ![]() 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. High values of dbz (color scale to the right of the image) indicate large drops and heavy precipitation. So, a more convenient number for calculations and comparison, a decibel (or logarithmic) scale (dBZ), is used. See the latest Iowa Doppler radar weather map including areas of rain, snow and ice. Reflectivity (designated by the letter Z) covers a wide range of signals (from very weak to very strong). Interactive Radar Weather Forecast 7 Day Forecast Hourly Forecast Thursday 82 / 61 Fair 0 82 61 Friday 86 / 65 Isolated Thunderstorms 30 86 65 Saturday 84 / 62 Scattered Thunderstorms. Other pages on this site will be updated or modified soon. ![]() We fixed are https or SSL certificates, improved load times, improved radar and added your local radar to follow your location. "Reflectivity" is the amount of transmitted power returned to the radar receiver. Welcome to Live Weather Radar I am always looking to improve the weather radars on this site. The colors are the different echo intensities (reflectivity) measured in dBZ (decibels of Z) during each elevation scan. Washington Weather Radar AccuWeather Radar Satellite Current Conditions Forecast Wind Flow Washington Weather Radar Now Rain Snow Ice Mix Around the Globe Hurricane Tracker Severe Weather. ![]()
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