You are watching: How many inches of snow equal one inch of rain
Perform the baseline rain-to-snow conversion. The baseline proportion of rain to snow is 1 inch of rain amounts to 10 customs of snow. Because that example, to calculation the snowfall tantamount of 3 inch of rain, multiply 3 by 10 to attain 30 inch of snow as the baseline conversion. This conversion applies for snow falling at temperatures close to freezing, between 28 and also 34 levels Fahrenheit.
Find the temperature in the location for i m sorry you"d favor to perform the conversion. You deserve to track under this information via the national Weather Service, for example, or any number of other meteorological sources, such as the Weather Channel. In general, colder temperatures do snow fall less densely and also lower the rain-to-snow ratio, result in an ext inches of eye per customs of rain.
Adjust her conversion to account for temperature if the outside temperature is less than or same to 27 degrees Fahrenheit. To calculate rain to snow for temperatures between 20 and also 27 levels Fahrenheit, main point rainfall by 15 instead of 10. Because that temperatures between 15 and 19 levels Fahrenheit, multiply rainfall through 20. In between 10 and also 14, main point by 30; in between 0 and also 9, main point by 40; in between -20 and also -1, multiply by 50, and also between -40 and -21, main point by 100. For example, to calculate the snowfall identical of 3 customs of rain at 5 levels Fahrenheit, multiply 3 through 40 to attain 120 inch of snow. Therefore, if 3 inch of rain room expected but the temperature drops all of sudden to 5 levels Fahrenheit, 120 inches of snow will fall.
Perform the calculations in reverse to calculate snow to rain. For example, for 8 customs of eye falling in ~ a temperature the 20 levels Fahrenheit, division 8 by 15, since the conversion variable for 20 degrees is 15. The an outcome is approximately 0.53 inches of rain. Therefore, 8 inch of eye that dropped at 20 degrees Fahrenheit will melt under to about 0.53 customs of rain.
numerous factors impact snow density apart indigenous ambient temperature. Wind, for example, can compact snow and also cause it to fall more densely, lowering the rain-to-snow ratio.
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numerous factors affect snow thickness apart from ambient temperature. Wind, for example, have the right to compact snow and also cause it come fall an ext densely, lowering the rain-to-snow ratio.
Richard Graham has worked professionally as both one economist and educator due to the fact that 2007. He likewise works together a consultant to little businesses and also organizations concentrated on arising green technologies. Graham stop a Bachelor of scientific research in economics.