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Winds will not be as strong as a tropical storm, which can have sustained winds ranging from 39 mph to 73 mph. However, stiff breezes of 15-25 mph with higher gusts near the coast are likely.
Damaging wind gusts, hail and tornadoes are possible within any storms. Powerful winds will be the main threat for areas closer to the coast. Heavy rainfall will raise the risk of flash flooding ...
Key takeaways:•Life-threatening, damaging and disruptive impacts from Helene are underway across the interior Southeast, following the storm's landfall southwest of Perry, Florida, on Thursday ...
In Canada, a severe thunderstorm is defined as having wind gusts of greater than 90 km/h (56 mph), hail with a diameter of greater than two centimetres (0.79 in), rainfall rates of greater than 50 millimetres (2.0 in) in one hour or greater than 75 millimetres (3.0 in) in three hours, or tornadoes. [14]
The National Weather Service operates 122 weather forecast offices. [1] [2] Each weather forecast office (WFO or NWSFO) has a geographic area of responsibility, also known as a county warning area, for issuing local public, marine, aviation, fire, and hydrology forecasts. They also issue severe weather warnings, gather weather observations, and ...
A slight risk day typically will indicate that the threat exists for scattered severe weather, including scattered wind damage (produced by straight-line sustained winds and/or gusts of 60 to 70 mph), scattered severe hail (varying in size from 0.25 inches (0.64 cm) to 1.75 inches (4.4 cm)) and/or isolated tornadoes (often of shorter duration ...
Potent storms packing strong winds, heavy rain and lightning will affect many parts of the United States this week, AccuWeather meteorologists warn. From the Northeast and Southeast to the Plains ...
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 ...