1/9/2024 0 Comments Doppler radar st louisDue to bandwidth constraints on our end, we are unable to download hemispheric imagery from other sources. We apologize for the inconvenience, but this was a National Weather Service call to juggle limited bandwidth on their primary data feed, to add higher resolution imagery for Canada and central America, and to add more models to the feed at a later date. We have also made a change on our end to show the Hawaii area from the US sector, as they are moving the main sector westward to accommodate them. The Hawaii satellite sector was discontinued (but see below).Īdditionally, GOES-17 (west) southern hemispheric imagery ended at 18 GMT/Z (noon Central time) on January 4, and, also at that exact moment, GOES-18 became the official GOES-West satellite. Channel 13 (clean infrared) imagery was increased in resolution from 6 KM to 2 KM.ģ. Imagery south of the equator has been terminated.Ģ. Central Time (18Z), the National Weather Service made several major changes to the GOES-WEST hemispheric satellite imagery they send to all of their forecast offices, and to us.ġ. Previous Update: On January 4th at at noon U.S. We have implemented a solution to restore producing global imagery. January 31, 2023: Due to a temporary reversion of the situation below at the National Weather Service, which will continue until March 1, global satellite imagery is once again being produced. All of these caveats must be taken into consideration when viewing nearly all radar data. Wind farms) to avoid a loss of data in critical areas resulting in 'hotspots'. Conversely, some non-meteorlogical returns may be omitted from this post-processing clean-up (Ex. This post-processing is unique to each radar site and may result in some 'blindspots'. What we display is Level 3 radar data which means it has been post-processed to reduce or remove some but not all of these sorts of returns. As such, raw weather radar data is characteristically noisy given how common these types of interference are. Among others, the radar can also see returns from non-meteorological objects such as birds, bugs, dust, terrain, buildings, and other sources of radio waves at similar frequencies. However these are not the only objects that will reflect the radar signal. Meteorological targets would include objects like rain, snow, and hail. Reflectivity, put simply is the amount of return that the radar sees at a given azimuth and range. Radar operates by sending out a radio wave pulse that will interact with objects and 'reflect' some portion of that signal back to the radar reciever. Base reflectivity is the most basic of all NEXRAD products and can be used to illustrate some fundamental principles.
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