of two potential upgrades to severe weather warning information that were tested in the HWT: 1) Threats-In-Motion where warning polygons move continuously with the storm threats, and 2) probabilistic information for locations where the threat levels are currently below warning criteria or for locations still downstream of curre...
Severe Weather Awareness Week: Severe Thunderstorm Criteria We have a laundry list of weather for this Thursday with … Train cars blown and derailed by tornado near Steele Hunter’s Thursday Afternoon Full Forecast 05/23 Hunter’s Wednesday Afternoon Full Forecast 05/22 ...
Broadcasters are responsible for sending out emergency weather alerts to their communities so viewers can make informed decisions. Learn more about the types of severe weather alerts and warnings.
A storm with one or more of the above Watch criteria is imminent, or has actually been seen on radar and/or satellite imagery, or reported by a reliable weather spotter. Tornado Watch Weather conditions - temperature, humidity, atmospheric instability, winds, etc ...
To alert the media, ECCC also issues a thunderstorm outlook on social media in the days leading up to a potential summer severe weather event. Example. Not a real-time post. (Environment and Climate Change Canada) ECCC has a set of criteria for what constitutes a...
Traditionally, National Meteorological Services have issued phenomenon-based weather warnings based on fixed criteria (for example, when the wind speed is expected to be higher than a given number) regardless of the expected effects of the event. WMO advocates for a more comprehensive warning system...
Mississippi Valley. The term "severe weather" is defined as damaging wind gusts over 58 mph and/or hail larger than an inch in diameter, the size of a quarter. This system will likely far exceed these criteria. This promises to be one of the most significant systems o...
and the mechanisms of different types of convective weather in China. Specifically, in-depth understanding of the multiple types of convection triggers, along with the environmental conditions, structures and organization modes, and maintenance mechanisms of supercell storms and squall lines, has been ...
(Section 1 refers), both the radar and satellite IR criteria are satisfied. Although microwave 85-91-GHz PCT imagery is lacking during the period 13:30 - 14:35 UTC, the earlier image obtained at 12:35 UTC did meet the criterion of PCT ≤ 200 K. As microwave imageries taken by polar ...
The National Weather Service has now extended the winter storm warning until 9:00am Tuesday for much of the area. Most of the snow accumulation should be done by shortly after midnight, but the cleanup will take many hours overnight and into Tuesday morning....