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. 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. Rancho Santa Margarita, CA Weather Forecast AccuWeather Current Weather 4:03 PM 65 F RealFeel Sun 69 RealFeel Shade 65 Air Quality Fair Wind W 4 mph Wind Gusts 7 mph Mostly. 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. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects.The colors are the different echo intensities (reflectivity) measured in dBZ (decibels of Z) during each elevation scan. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Take precautions - Protection against sunburn is recommended. Note: The daily maximum UV index of 4 in November interpret into the following advice: A UV Index value of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person. UV indexThe months with the lowest UV index in Rancho Santa Margarita are January through March, November and December, with an average maximum UV index of 4. SunshineThe average sunshine in November is 7h. 2024, at 2:00 am consequently, the time zone reverts from PST to PDT. Daylight Saving Time starts again on Sunday, March 10. Precipitation (in) 12AM 3AM 6AM 9AM 12PM 3PM 6PM 9PM 12AM 0 2 4 6. 2023, at 2:00 am, Daylight Saving Time ends, and the time zone changes from PDT to PST. 12AM 3AM 6AM 9AM 12PM 3PM 6PM 9PM 12AM 68 70 72 74 76 78. On the last day of November, in Rancho Santa Margarita, sunrise is at 6:35 am and sunset at 4:42 pm PST. ![]() On the first day of the month, sunrise is at 7:09 am and sunset at 5:58 pm PDT. DaylightIn November, the average length of the day in Rancho Santa Margarita is 10h and 25min. Throughout the year, there are 64.2 rainfall days, and 5.79" (147mm) of precipitation is accumulated. Rainfall In Rancho Santa Margarita, in November, during 4.9 rainfall days, 0.51" (13mm) of precipitation is typically accumulated. HumidityNovember is the least humid month, with an average relative humidity of 56%. In Rancho Santa Margarita, the average low-temperature is 54.7☏ (12.6☌). TemperatureIn November, the average high-temperature slightly decreases from a moderately hot 75.2☏ (24☌) in October to an agreeable 69.4☏ (20.8☌). November, the last month of the autumn in Rancho Santa Margarita, is also an agreeable month, with an average temperature fluctuating between 54.7☏ (12.6☌) and 69.4☏ (20.8☌).
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