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Wind: S 5 mph. TOMORROW: Partly cloudy with highs in the low-70s. A 40% chance of rain and storms at night. Wind: S 5-10 mph. THURSDAY: Mostly cloudy with a 70% chance […]
TODAY: Mostly cloudy with a 30% chance of rain and storms. Highs in the low-80s. Wind: S 15-20 mph, gusting to 30 mph at times. TONIGHT: Mostly cloudy with a 20% chance of showers and storms early.
TODAY: Partly cloudy with highs in the low-70s. Wind: S 5-10 mph. TONIGHT: Partly to mostly cloudy with a 30% chance of rain and storms late, especially in our southwestern areas. Lows in the mid ...
Environment Canada reports a chance of precipitation (COP) that is defined as "The chance that measurable precipitation (0.2 mm of rain or 0.2 cm of snow) will fall on any random point of the forecast region during the forecast period." [7] The values are rounded to 10% increments, but are never rounded to 50%. [8]
This method has been used for years within National Weather Service forecasts, as a period's chance of rain equals the chance that 0.01 inches (0.25 mm) will fall in any particular spot. [16] In this case, it is known as probability of precipitation. These probabilities can be derived from a deterministic forecast using computer post-processing.
Heavy rain will spread across portions of the Southeastern states into Thursday night as Rafael churns hundreds of miles to the south over the Gulf of Mexico, AccuWeather meteorologists warn. The ...
[1] [2] [3] The Weather Channel has been empirically shown, and has also admitted, to having a wet bias in the case of low probability of precipitation (for instance, a 5% probability may be reported as a 20% probability) but not at high probabilities of precipitation (so a 60% probability will be reported as a 60% probability). Some local ...
Tuesday: Rain or freezing rain before 11 a.m., then rain, possibly mixed with snow between 11 a.m. and noon, then rain after noon. High near 38. High near 38. South wind around 7 mph. Chance of ...