8/24/2023 0 Comments Weather radar big stone gap va![]() 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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.The colors are the different echo intensities (reflectivity) measured in dBZ (decibels of Z) during each elevation scan. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. On bright days sunglasses that block both UVA and UVB rays should be worn. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Infants and people with sensitive skin must always be protected. Note: In January, the average maximum UV index of 2 translate into the following recommendations:įor the majority, extended sun exposure is not of great concern. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the average person. UV index January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Big Stone Gap. SunshineWith an average of 4.4h of sunshine, January has the least sunshine of the year in Big Stone Gap, Virginia. On the last day of the month, sunrise is at 7:34 am and sunset at 5:55 pm EST. On the first day of January, sunrise is at 7:43 am and sunset at 5:25 pm. DaylightThe average length of the day in January in Big Stone Gap is 9h and 59min. Snow falls for 10.9 days and accumulates 5.2" (132mm) of snow. January is the month with the most snowfall in Big Stone Gap. SnowfallMonths with snowfall in Big Stone Gap are January through April, October through December. In Big Stone Gap, during the entire year, the rain falls for 200.2 days and collects up to 40.87" (1038mm) of precipitation. Rainfall In Big Stone Gap, it is raining for 13.8 days, with typically 3.31" (84mm) of accumulated precipitation. HumidityIn Big Stone Gap, the average relative humidity in January is 79%. TemperatureWith an average high-temperature of 40.5☏ (4.7☌) and an average low-temperature of 26.4☏ (-3.1☌), January is the coldest month. January, the same as December, is another cold winter month in Big Stone Gap, Virginia, with temperature in the range of an average low of 26.4☏ (-3.1☌) and an average high of 40.5☏ (4.7☌).
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