Along with the strong winds and drenching rain, conditions are ripe for tornadoes. Most of the region is under a tornado watch until at least noon Sunday. At times certain areas will be put under a tornado warning.
A tornado is a rapidly rotating column of air that is in contact with both the surface of the Earth and a cumulonimbus cloud or, in rare cases, the base of a cumulus cloud. They are often referred to as twisters, whirlwinds or cyclones, although the word cyclone is used in meteorology to name a weather system with a low-pressure area in the center around which winds blow counterclockwise in the Northern Hemisphere and clockwise in the Southern. Tornadoes come in many shapes and sizes, and they are often visible in the form of a condensation funnel originating from the base of a cumulonimbus cloud, with a cloud of rotating debris and dust beneath it. Most tornadoes have wind speeds less than 110 miles per hour (180 km/h), are about 250 feet (80 m) across, and travel a few miles (several kilometers) before dissipating. The most extreme tornadoes can attain wind speeds of more than 300 miles per hour (480 km/h), are more than two miles (3 km) in diameter, and stay on the ground for dozens of miles (more than 100 km).
Various types of tornadoes include the multiple vortex tornado, landspout and waterspout. Waterspouts are characterized by a spiraling funnel-shaped wind current, connecting to a large cumulus or cumulonimbus cloud. They are generally classified as non-supercellular tornadoes that develop over bodies of water, but there is disagreement over whether to classify them as true tornadoes. These spiraling columns of air frequently develop in tropical areas close to the equator, and are less common at high latitudes. Other tornado-like phenomena that exist in nature include the gustnado, dust devil, fire whirls, and steam devil.
Tornadoes have been observed and documented on every continent except Antarctica. However, the vast majority of tornadoes occur in the Tornado Alley region of the United States, although they can occur nearly anywhere in North America. They also occasionally occur in south-central and eastern Asia, northern and east-central South America, Southern Africa, northwestern and southeast Europe, western and southeastern Australia, and New Zealand. Tornadoes can be detected before or as they occur through the use of Pulse-Doppler radar by recognizing patterns in velocity and reflectivity data, such as hook echoes or debris balls, as well as through the efforts of storm spotters.
There are several scales for rating the strength of tornadoes. The Fujita scale rates tornadoes by damage caused and has been replaced in some countries by the updated Enhanced Fujita Scale. An F0 or EF0 tornado, the weakest category, damages trees, but not substantial structures. An F5 or EF5 tornado, the strongest category, rips buildings off their foundations and can deform large skyscrapers. The similar TORRO scale ranges from a T0 for extremely weak tornadoes to T11 for the most powerful known tornadoes. Doppler radar data, photogrammetry, and ground swirl patterns (cycloidal marks) may also be analyzed to determine intensity and assign a rating.
Tornado warning for northeastern Palm Beach County
Warning may refer to:
Tornado watch: It means tornadoes are possible in and near the watch area.
Tornado warning: It means a tornado has been sighted or indicated by weather radar.
Tornado warning for northeastern Palm Beach County
Currently these counties are covered by the tornado watch:
Broward, Palm Beach, Miami-Dade, Martin, Monroe, Collier, Hendry, Lee, Monroe, DeSoto, Highlands, Indian River, Okeechobee, St. Lucie, Charlotte, Glades and Osceola.
Additionally, a flood warning is in effect for for much of Broward and Palm Beach counties until 8:30 p.m. Sunday. A flood warning means flooding is imminent or occurring.
Here is the latest tornado warning from the National Weather Service:
National Weather Service Miami FL942 AM EDT SUN SEP 10 2017
The National Weather Service in Miami has issued a
* Tornado Warning for… Northeastern Palm Beach County in southeastern Florida…
* Until 1000 AM EDT
* At 942 AM EDT, a severe thunderstorm capable of producing a tornado was located over Port Of Palm Beach, or near Riviera Beach, moving northwest at 65 mph.
SOURCE…Radar indicated rotation.
IMPACT…Flying debris will be dangerous to those caught without shelter. Mobile homes will be damaged or destroyed. Damage to roofs, windows, and vehicles will occur. Tree damage is likely.
* This dangerous storm will be near… Riviera Beach, North Palm Beach, Lake Park, Schall Circle and Golden Lakes around 945 AM EDT. Juno Beach and Juno Ridge around 950 AM EDT. West Palm Beach, Jupiter, Palm Beach Gardens, North County Airport and The Acreage around 955 AM EDT.
Other locations impacted by this tornadic thunderstorm includeLakeside Green, Fau North Campus, Philo Farms, Glen Ridge, PlantationMobile Home Park, Limestone Creek, Caloosa, Mangonia Park, StaceyStreet and Jupiter Farms.
TAKE COVER NOW! Move to an interior room on the lowest floor of asturdy building. Avoid windows. If you are outdoors, in a mobilehome, or in a vehicle, move to the closest substantial shelter andprotect yourself from flying debris.
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