Propagation and Space Weather….

SFI = 105

A index = 20

K index = 3

SSN = 74

Sunspot AR3078 has a delta-class magnetic field
that poses a threat for strong M-class solar flares. Credit: SDO/HMI

A CME JUST HIT EARTH, MORE ON THE WAY: A CME hit Earth’s magnetic field on Aug. 19th at 1734 UT, sparking a G1-class (minor) geomagnetic storm. Two more CMEs are on the way: #1#2. Both are on the edge of the Earth strike zone; they could deliver weak glancing blows on Aug. 20th and 21st. Even a weak CME strike can cause a G1-class storm, so stay tuned.


:Product: Geophysical Alert Message wwv.txt
:Issued: 2022 Aug 20 0610 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Geophysical Alert Message
Solar-terrestrial indices for 19 August follow.
Solar flux 105 and estimated planetary A-index 20.
The estimated planetary K-index at 0600 UTC on 20 August was 3.

Space weather for the past 24 hours has been minor.
Geomagnetic storms reaching the G1 level occurred.

Space weather for the next 24 hours is predicted to be minor.
Geomagnetic storms reaching the G1 level are expected.

NOAA Alerts

Space Weather Message Code: ALTTP2
Serial Number: 1131
Issue Time: 2022 Aug 19 2108 UTC

ALERT: Type II Radio Emission
Begin Time: 2022 Aug 19 2033 UTC
Estimated Velocity: 999 km/s

NOAA Space Weather Scale descriptions can be found at

Description: Type II emissions occur in association with eruptions on the sun.