:Product: Geophysical Alert Message wwv.txt
:Issued: 2023 Jun 09 0620 UTC
# Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
# Geophysical Alert Message
Solar-terrestrial indices for 08 June follow.
Solar flux 169 and estimated planetary A-index 5.
The estimated planetary K-index at 0600 UTC on 09 June was 1.00.

No space weather storms were observed for the past 24 hours.

No space weather storms are predicted for the next 24 hours.

NOAA Alerts

Space Weather Message Code: ALTTP2
Serial Number: 1196
Issue Time: 2023 Jun 09 0246 UTC

ALERT: Type II Radio Emission
Begin Time: 2023 Jun 08 2114 UTC
Estimated Velocity: 390 km/s

NOAA Space Weather Scale descriptions can be found at

Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.

NOAA Observations


NOAA Scales Activity

NOAA Scales Activity
Range 1 (minor) to 5 (extreme)
NOAA Scale Past 24 hrs Current Fcst 24 hrs
Geomagnetic Storms
Solar Radiation Storms
Radio Blackouts

DX Cluster WWV announcements

0900AE5ESFI=84, A=5, K=0, No Storms -> No Storms
0900VE1DXSFI=91, A=4, K=0, No Storms -> No Storms
0900VE7CCSFI=87, A=5, K=3, No Storms -> Minor w/G1
0900VE1DXSFI=80, A=6, K=0, No Storms -> No Storms
0900AE5ESFI=143, A=4, K=1, Minor w/R1 -> Minor w/R1

Propagation Links

Basics of Radio Wave Propagation
Solar Influences Data Analysis Center
High Latitude Geomagnetic data
A dynamic collection of high latitude geomagnetic data from 12 Canadian observatories.
The Aurora Alarm
Free service that sends an email when an aurora is imminent.
AE4RV's Propagation Primer
A Flash movie that describes how HF (shortwave) radio propagation works for beginners.
Radio Line of Sight Plot Server
Automatic real-time AURORA and E-skip warnings via email or mobile phone. Propagation Page
HF and SWL propagation data and forecasts.
Grey Line Map
An automatically refreshing, real-time world map showing daylight, twilight (greyline or grayline) and darkness.
Real-Time 24 Hour Effective Sunspot Number
MSU Solar Physics Group
Of interest to solar keen hams is the YPOP section. Near real time movies of active solar regions in JAVA,GIF or MPEG.
HF Propagation Predictions from the United Kingdom
Table of path openings by band for major cities around the world. The table has been optimised for U.K. radio amateurs.
Current Hydrogen-Alpha Solar Image
Updated every minute!
Space Weather Bureau
Daily monitoring of solar flares, geomagnetic storms, Earth's aurora, and all forms of space weather. sunspots, the sun, solar flares, sun quake, sunquakes
IPS Radio and Space Services
Australian space weather agency.
Propagation Studies Committee of the Radio Society of Great Britain
SM6EHY on Propagation (below 10 MHz)
Super Dual Auroral Radar Network
SuperDARN is a network of high-frequency radars used to study the Earth's ionosphere.
Solar Terrestrial Dispatch Ham Page
Sunrise, Sunset &Twilight by local Time Zone