Search results
Results from the Health.Zone Content Network
The Storm Prediction Center issues convective outlooks (AC), consisting of categorical and probabilistic forecasts describing the general threat of severe convective storms over the contiguous United States for the next six to 192 hours (Day 1 through Day 8). These outlooks are labeled and issued by day, and are issued up to five times per day.
Significant weather advisory (SPS; alt.: significant weather alert) – A strong thunderstorm below severe criteria, containing small hail below 1 inch (2.5 cm) diameter, and/or strong winds of 39–57 miles per hour (63–92 km/h), is indicated by Doppler weather radar and may create some adverse impacts on travel.
August 26, 2024 at 11:07 AM. The National Weather Service has issued a Severe Thunderstorm Watch for Cape Cod, in effect until 7 p.m. on Monday. The watch also includes Nantucket and Dukes ...
A high risk severe weather event is the greatest threat level issued by the Storm Prediction Center (SPC) for convective weather events in the United States. On the scale from one to five, a high risk is a level five; thus, high risks are issued only when forecasters at the SPC are confident of a major severe weather outbreak.
Generally, a warning covers a smaller geographic area and comes when the threat is more “imminent,” McClatchy News reported. For example, the weather service puts out a tornado watch “when ...
Hazardous weather outlook. Heat advisory. Heavy freezing spray warning. Heavy freezing spray watch. Heavy snow warning. History of Atlantic hurricane warnings. Hong Kong rainstorm warning signals. Hong Kong tropical cyclone warning signals. HURCON.
An extreme wind warning (SAME code EWW) is an alert issued by the National Weather Service for areas that will experience sustained surface winds 100 knots (115 mph, 185 km/h, 51 m/s) or greater within one hour, due to a landfalling tropical cyclone. Extreme wind warnings are intended to provide guidance to the general public at a county or sub ...
In Canada, governmental weather warnings and watches are issued by the Environment Canada.Environment Canada defines an advisory as "an alert to cover a wide array of deteriorating weather conditions," a watch as "when conditions favour that severe weather forming" and a warning as "severe weather is actually occurring or is imminent."