1/15/2024 0 Comments Nws radarThe development and use of radar expanded tremendously during the war when weather was seen as unwanted "noise" that interferred with the radar's primary purpose, the detection of aircraft and ships. The term was officially coined during World War II (1939-1941) even though the concept of radar was discovered and demonstrated prior to the war. The word, RADAR, is an acronym that stands for RAdio Detection And Ranging. Detailed interpretation of these displays can be complex and is beyond the scope of this web page. The purpose of this web page is to provide some basic background information to help non-meteorologists understand what is shown on radar displays. With the proliferation of radar imagery on the Internet and television/cable, it is important that non-meteorologists (and even some so-called "television meteorologists") have an idea of what a radar senses and displays. Mary Parish along the coast.Weather Forecasting. Note that the greatest improvement, indicated by the darkest shades of green, extends from southwest Mississippi through metro Baton Rouge to St. The map below shows where low-level radar coverage will be improved. Once online in Hammond, the radar will be allowed to operate at a tilt of 0.3°, aiding in a lower scan and better detection of high winds and areas of potential rotation in the lowest levels of storms. Prior to the move, the lowest tilt was 0.5° above horizontal. Where and by how much will coverage improve?Īs Nash points out, it’s not only that the radar is moving closer to the Capital Region, but it will also be operating at a lower tilt than ever before. A Louisiana congressman even proposed legislation to close the gap after reading my commentary about the February 2016 event. I have been outspoken about this radar coverage gap for years, demonstrating how it may have been an issue during a record-setting tornado outbreak in February 2016 and again less than 6 months later. Tornado detection is the key benefit to the relocation. Once the radar is moved to Hammond and a lower tilt is used, the beam will scan approximately 1,800-2,800 feet above the Capital City. The beam from the National Weather Service radar in Slidell was approximately 5,600-7,200 feet above ground by the time it reached Baton Rouge. While we need to see all heights for a full storm analysis, this should help us see tornado formation a little easier.” Once we move the radar and lower the tilt of the radar, we’ll be able to see storms around 1000-3000 feet in Baton Rouge. “Right now, over Baton Rouge, we can only see storms around 6,000-7,000 feet. Lauren Nash, Warning Coordination Meteorologist with the NWS office in Slidell, explained the significance of that change. At that elevation, it could be challenging for radar operators to get a good look at the lowest levels of storms. Prior to the move, the radar beam emanating from Slidell was typically scanning more than a mile above the ground in the Capital Region. The relocation is largely designed to improve radar coverage and severe weather detection for western parts of the NWS New Orleans/Baton Rouge County Warning Area (CWA), including metro Baton Rouge. The move approximately 45 miles to the west is designed to improve radar coverage in parts of south Louisiana and southwest Mississippi without causing any significant degradation in coverage elsewhere. The radar was officially taken offline on Monday, November 27, and is expected to remain offline into March 2024. (WAFB) - The National Weather Service (NWS) radar in Slidell will be relocated to Hammond in the months ahead.
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