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Some inclement weather makes road passage impossible or difficult. In developed nations, municipalities attempt to clear snow-covered roads—but this is not always possible, and often many cannot travel. In deeper snowfalls, personal vehicles may become trapped, and their removal may take several days.
Local Weather Forecast Offices (WFO) of the National Weather Service may issue a Special Weather Statement to alert of a specified hazard that is approaching or below warning or advisory criteria, that does not have a specific alert product code of their own (such as for widespread funnel clouds with limited to no threat of complete tornadogenesis, the likelihood of landspouts, or strong ...
Category 3 Hurricane Matthew's close passage of Brevard County, Florida on the morning of October 7, 2016 prompted the issuance of the first Extreme Wind Warning.. An extreme wind warning (SAME code EWW) is an alert issued by the National Weather Service for areas on land that will experience sustained surface winds 100 knots (115 mph, 185 km/h, 51 m/s) or greater within one hour.
Isolated tornadoes are possible but not expected to be the dominant severe weather event, hence these watches are very rarely issued. An expected severe wind event is the mostly likely reason for a PDS severe thunderstorm watch to be issued, with widespread winds greater than 90 mph (150 km/h or 80 knots) possible. These watches are usually ...
A blizzard is a severe snowstorm characterized by strong sustained winds and low visibility, lasting for a prolonged period of time—typically at least three or four hours. A ground blizzard is a weather condition where snow that has already fallen is being blown by wind. Blizzards can have an immense size and usually stretch to hundreds or ...
A wind storm must meet the following criteria: [4] Wind damage swath extending for more than 400 miles (640 km) Wind gusts of at least 58 miles per hour (26 m/s; 50 kn) along most of its length; Several, well-separated 75 miles per hour (34 m/s; 65 kn) or greater gusts; Prior to January 11, 2022, the definition for a derecho was: [12]
Jennifer Replogle, a pregnant mother of two young children, is “completely trapped” at home in Tater Hill, North Carolina, elevation 4,200 feet, above Boone, where hurricanes are not the norm.
The National Weather Service issues a similar high wind warning (Specific Area Message Encoding code: HWW) for high winds on land. The criteria vary from place to place; however, in most cases, the warning applies to winds of 40 miles per hour (64 km/h) to 73 miles per hour (117 km/h) for at least 1 hour; or any gusts of 58 miles per hour (93 ...