This image was uploaded in a format such as JPEG (or GIF). It could be stored, however, in the PNG format which supports alpha transparency and lossless compression, meaning that changes do not reduce the image quality. If possible, please upload a PNG version of this image (from a non-JPEG source or with existing compression artifactsremoved). After doing so, replace this template with {{SupersededPNG|New Image.png}}, and please replace all instances of the previous version throughout Commons (noted under the "File links" header). For more information, see Commons:Preparing images for upload.
This image is in the public domain because it was stored on the web servers of the U.S. National Weather Service. NWS-created images are automatically public domain in the U.S. since the NWS is a part of the U.S. government. However, the NWS sites also host non-NWS images which have been submitted by individuals: these are generally shown as "Courtesy of ...". Such images have explicitly been released to the public domain by the copyright owner as part of the upload process.
As stated at https://www.weather.gov/fsd/disclaimer: "By submitting images, you understand that your image is being released into the public domain. This means that your photo or video may be downloaded, copied, and used by others."