Aurora forecast

NOAA 3-day aurora forecast

NOAA WSA-Enlil solar wind prediction

Corona holes

Images and descriptions from site: https://sdo.gsfc.nasa.gov/data/ (Courtesy of NASA/SDO and the AIA, EVE, and HMI science teams.)

0171

0193

0211

211, 193, 171

0171 - This channel is especially good at showing coronal loops - the arcs extending off of the Sun where plasma moves along magnetic field lines. The brightest spots seen here are locations where the magnetic field near the surface is exceptionally strong.

0193 - This channel highlights the outer atmosphere of the Sun - called the corona - as well as hot flare plasma. Hot active regions, solar flares, and coronal mass ejections will appear bright here. The dark areas - called coronal holes - are places where very little radiation is emitted, yet are the main source of solar wind particles.

0211 - This channel highlights the active region of the outer atmosphere of the Sun - the corona. Active regions, solar flares, and coronal mass ejections will appear bright here. The dark areas - called coronal holes - are places where very little radiation is emitted, yet are the main source of solar wind particles.

211, 193, 171 - This image combines three images with different, but very similar, temperatures. The colors are assigned differently than in the single images. Here AIA 211 is red, AIA 193 is green, and AIA 171 is blue. Each highlights a different part of the corona.