The part of the Sun just above the photosphere. Thousands of miles thick, it is mostly hydrogen gas. It looks like a red ring during an eclipse. The corona is just above the chromosphere.
<AUR>.Sunspots
| Regions with Sunspots | |||
| Region | # of Spots | Mag Type | |
| 2718 | 02 | Beta | |
| H-alpha Plages without Spots | |||
| Region | |||
| None | |||
| Regions Due to Return 17 Aug to 19 Aug | |||
| Region | |||
| None | |||
<AUR>.Alert
<AUR>.Alert.Subscriberlast message issued over 14hrs ago
Space Weather Message Code: ALTK04
Serial Number: 2068
Issue Time: 2018 Aug 17 0413 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2018 Aug 17 0412 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Forecast Discussion
Weekly Highlights and Forecasts
Solar Weather Overview
Latest Space Weather Storm
<AUR>.DX-Cluster Statistics
Knowledge Database
Source: http://www.noaa.gov
