Propagation & Space Weather Info Collected from Different Sources
:Product: Report of Solar-Geophysical Activity :Issued: 2023 Jan 30 2200 UTC # Prepared jointly by the U.S. Dept. of Commerce, NOAA, # Space Weather Prediction Center and the U.S. Air Force. # Joint USAF/NOAA Solar Geophysical Activity Report and Forecast SDF Number 30 Issued at 2200Z on 30 Jan 2023 IA. Analysis of Solar Active Regions and Activity from 29/2100Z to 30/2100Z: Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C3 event observed at 30/1207Z. There are currently 5 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be low with a slight chance for an M-class flare on days one, two, and three (31 Jan, 01 Feb, 02 Feb). IIA. Geophysical Activity Summary 29/2100Z to 30/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 466 km/s at 30/2059Z. Total IMF reached 8 nT at 30/2041Z. The maximum southward component of Bz reached -6 nT at 30/2034Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 997 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet levels on days one and two (31 Jan, 01 Feb) and quiet to active levels on day three (02 Feb). III. Event probabilities 31 Jan-02 Feb Class M 15/15/15 Class X 01/01/01 Proton 01/01/01 PCAF green IV. Penticton 10.7 cm Flux Observed 30 Jan 136 Predicted 31 Jan-02 Feb 135/135/140 90 Day Mean 30 Jan 152 V. Geomagnetic A Indices Observed Afr/Ap 29 Jan 005/004 Estimated Afr/Ap 30 Jan 004/005 Predicted Afr/Ap 31 Jan-02 Feb 005/005-005/005-010/012 VI. Geomagnetic Activity Probabilities 31 Jan-02 Feb A. Middle Latitudes Active 10/10/35 Minor Storm 01/01/15 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/10 Minor Storm 20/20/25 Major-severe storm 10/10/50
Solar Images
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GOES-15 X-ray Image
NOAA/SWPC Boulder, CO -
SOHO EIT Fe XII 195 Å Image
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SDO AIA 4500 Å Image
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SOHO LASCO White Light Image (C2) of the Sun's Corona
LASCO Homepages
More solar/images: http://sprg.ssl.berkeley.edu/shine/suntoday.html
Aurora
Geomagnetic activity nowcast (Finland)
Current magnetic activity level in northern and southern Finland + near real-time/images from aurora cameras:
https://rwc-finland.fmi.fi/index.php/space-weather-in-finland/
The Kjell Henriksen Observatory website at http://kho.unis.no/ contains aurora forecast up to one hour ahead in time.
DX Robot Gouda delivers aurora alerts via e-mail: http://www.gooddx.net/
Aurora alerts via e-mail for Finnish operators: revontulialertti
Solar Wind & Other Data
Map of the Latest 11m Spots from the CRX Cluster Network
Solar and auroral data: http://www.solarham.net
Propagation Tutorials
General Guidelines for Correlation of Propagation Indices to Actual HF Propagation Conditions
N0NBH's propagation tutorial (PDF)
NM7M: The Little Pistol's Guide to HF Propagation (PDF)
Propagation Broadcasts and Forecasts Demystified (PDF)
RSGB Propagation Studies Committee (lots of info on different propagation modes)
Understanding 10 (11) Meter Sporadic-E (understanding ES or “short skip”)