This definition appears very frequently
0pt;text-indent:-36. 0pt;mso-layout-grid-align: none;text-autospace:none'>1. Type of Report—There are two types of METAR reports. The first is the routine METAR report that is transmitted every hour. The second is the aviation selected special weather report (SPECI). This is a special report that can be given at any time to update the METAR for rapidly changing weather conditions, aircraft mishaps, or other critical information.