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Severe weather can occur under a variety of situations, but three characteristics are generally needed: a temperature or moisture boundary, moisture, and (in the event of severe, precipitation-based events) instability in the atmosphere.
The categorical forecast in the Day 1-3 Convective Outlooks—which estimates a severe weather event occurring within 25 miles (40 km) of a point and derives the attendant risk areas from probability forecasts of tornadoes, damaging winds, and large hail on Days 1 and 2, and a combined severe weather risk on Day 3—specifies the level of ...
They are generally only issued on the day of the event. However, there have been two occurrences (April 7, 2006, and April 14, 2012) of a high risk being issued for Day 2 of the outlook period (with the event occurring the following day). Under the official protocol, a high risk cannot be issued for Day 3 of the outlook period. [2]
Bad weather in forecast for holiday travel. Christopher Cann, USA TODAY. December 26, 2024 at 8:17 AM ... Meanwhile, in the west, a dayslong stretch of poor weather is showing no signs of slowing.
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Travel could prove challenging and the best seats for the New York Macy's Thanksgiving Day Parade 2024 may be in your living room as storms threaten to ... Not all the holiday weather news is bad ...
Extreme weather describes unusual weather events that are at the extremes of the historical distribution for a given area. [2]: 2908 The IPCC Sixth Assessment Report defines an extreme weather event as follows: "An event that is rare at a particular place and time of year. Definitions of 'rare' vary, but an extreme weather event would normally ...
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