Propagation
NOAA STI
: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: ALTTP2Serial 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
www.swpc.noaa.gov/noaa-scales-explanation
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
| Range 1 (minor) to 5 (extreme) | |||
| NOAA Scale | Past 24 hrs | Current | Fcst 24 hrs |
|---|---|---|---|
| Geomagnetic Storms | None |
None |
None |
| Solar Radiation Storms | None |
None |
None |
| Radio Blackouts | None |
None |
None |
Propagation Links
| Title | Rating |
|---|---|
| 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 | |
| DXrobot Automatic real-time AURORA and E-skip warnings via email or mobile phone. | |
| hfradio.org 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 | |
