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Tournai, known as Tornacum, was a place of minor importance in Roman times, a stopping place where the Roman road from Cologne on the Rhine to Boulogne on the coast crossed the river Scheldt. It was fortified under Emperor Maximian in the 3rd century AD, [6] when the Roman limes was withdrawn to the string of outposts along the road.
This was a modified version of the AN/APS-2F radar, which the Weather Bureau acquired from the Navy. The WSR-1A, WSR-3, and WSR-4 were also variants of this radar. [88] This was followed by the WSR-57 (Weather Surveillance Radar – 1957) was the first weather radar designed specifically for a national warning network. Using WWII technology ...
The Grand-Place (French: [ɡʁɑ̃ plas]; "Grand Square" [a]) is the main square and the centre of activity of Tournai, Hainaut, Belgium. The square has a triangular shape, owing it to the convergence of several ancient roads, [2] and it covers 7,500 m 2 (81,000 sq ft). As in many Belgian cities, there are a number of cafés and pubs on the ...
The next tropical threat to the U.S. is brewing in the Caribbean as there are increasing signs that the ingredients needed for a tropical storm or even a hurricane are coming together.
ECMWF aims to provide accurate medium-range global weather forecasts out to 15 days and seasonal forecasts out to 12 months. [12] Its products are provided to the national weather services of its member states and co-operating states as a complement to their national short-range and climatological activities, and those national states use ECMWF's products for their own national duties, in ...
Weather radar in Norman, Oklahoma with rainshaft Weather (WF44) radar dish University of Oklahoma OU-PRIME C-band, polarimetric, weather radar during construction. Weather radar, also called weather surveillance radar (WSR) and Doppler weather radar, is a type of radar used to locate precipitation, calculate its motion, and estimate its type (rain, snow, hail etc.).
Over-the-horizon radar. How a skywave OTH radar works: A powerful shortwave signal from a large transmitting antenna (left) reaches a target beyond the horizon by refracting off the ionosphere, and the echo signal from the target (right) returns to the receiving antenna by the same route. In practice, the beams are much closer to the horizon ...