Hazardous Weather Information Summary of significant meteorological information (SIGMET/WS), convective significant meteorological information (convective SIGMET/WST), urgent pilot weather reports (urgent PIREP/UUA), center weather advisories (CWA), airmen's meteorological information (AIRMET/WA) and any other weather such as isolated thunderstorms that are rapidly developing and increasing in intensity, or low ceilings and visibilities that are becoming widespread which is considered significant and are not included in a current hazardous weather advisory.

Aero Linx: From Private to Professional Pilot The goal of this blog is to show the steps which I (Swayne Martin) will be taking over the next few years in my pursuit of a Professional Pilot career. I will show step by step my path towards this goal, beginning with my first Flight Lesson. In addition, I will show you what inspires me in aviation from the flights I have taken to the people I have met. Along the way, I hope to inspire young or new pilots to follow their passion and take it to the next level.

"This year the Van Allen Probes and the BARREL balloons will be exploring what happens at dusk. Balloon campaigns in the Antarctic region have long seen these bursts of particles precipitating down toward Earth at dusk. This year, the spacecraft and the balloons will have coordinated measurements to determine what's happening up in the belts during these events." Source: Robyn Millan, principal investigator for BARREL at Dartmouth. The second year of an unprecedented balloon campaign in Antarctica has just begun. The NASA-funded mission – called the Balloon Array for Radiation belt Relativistic Electron Losses, or BARREL – is led by Dartmouth College in Hanover, NH.