3/28/2023 0 Comments Weather doppler radarMost stations began observing in the mid-1990s, and most period of records are continuous. Data coverage varies by station and ranges from June 1991 to 1 day from present. NEXRAD data are acquired by the NOAA National Centers for Environmental Information (NCEI) for archiving and dissemination to users. From the Level II quantities, computer processing generates numerous meteorological analysis Level 3 products. Level II data are recorded at all NWS and most USAF and FAA WSR-88D sites. With the advent of dual polarization beginning in 2011, additional base products of differential reflectivity, correlation coefficient and differential phase are available. The lower Level II data contain the three meteorological base data quantities at original resolution: reflectivity, mean radial velocity, and spectrum width. The NEXRAD products are divided into multiple data processing levels. The radar scan times 4.5, 5, 6 or 10 minutes depending on the selected VCP. A VCP is a series of 360 degree sweeps of the antenna at pre-determined elevation angles and pulse repetition frequencies completed in a specified period of time. The two modes employ nine Volume Coverage Patterns (VCPs) to adequately sample the atmosphere based on weather conditions. The radar system operates in two basic modes: a slow-scanning Clear Air Mode (Mode B) for analyzing air movements when there is little or no precipitation activity in the area, and a Precipitation Mode (Mode A) with a faster scan for tracking active weather. This is a 10 cm wavelength (S-Band) radar that operates at a frequency between 2,700 and 3,000 MHz. NEXRAD stations use the Weather Surveillance Radar - 1988, Doppler (WSR-88D) system. Doppler radars detect atmospheric precipitation and winds, which allow scientists to track and anticipate weather events, such as rain, ice pellets, snow, hail, and tornadoes, as well as some non-weather objects like birds and insects. NEXRAD is a network of 160 high-resolution Doppler weather radars operated by the NOAA National Weather Service (NWS), the Federal Aviation Administration (FAA), and the U.S. While the top end Tier 2 package adds in hail and shear contouring (the latter necessary for tornado formation), as well as multi-platform use and a 30-day radar archive.īut even for just $9.99 for the app alone without the tiered options, the standard data is fantastic.This dataset consists of Level II weather radar data collected from Next-Generation Radar (NEXRAD) stations located in the contiguous United States, Alaska, Hawaii, U.S. Stepping up to the Pro Tier 1 subscription for $9.99 per year gets you longer animations and lightning data (a must for outdoor enthusiasts), dual pane capability, and inspection tools. You have access to every single radar product that the pros do, at practically the same time they see them-along with up to the minute warning information. Available on Android and iOS for $9.99 and Windows or Mac for $29.99, this app is one of the quickest updating around. If none of the above weather apps have what you’re looking for, and you’re willing to spend money on a quality professional weather radar app or website that storm chasers use, hands down our top recommendation is RadarScope. However, the smoothing is addressed in a premium radar option, which offers higher resolution imagery and the previously mentioned forecast radar imagery. In turn, this may cause some inaccuracy in the data, especially when zoomed in. If we had to pick a negative with this one, it’s that the app smooths radar imagery too much to make it look nice on the screen. It also has an innovative future radar option, which attempts to forecast future storm movement up to six hours in advance using the company’s proprietary short-range modeling. Zooming in and out of imagery is fluid, and the satellite map used allows you to zoom down to street level. According to Forecast Advisor, The Weather Channel is consistently rated as the most accurate weather app for many cities across the country.Īlthough it’s a more general weather app, there are some great radar features that we think are worth mentioning. The Weather Channel’s app continues to be one of our top radar apps for 2023, and in our opinion, it’s the best actual mobile weather app.
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