Propagation & Space Weather Info Collected from Different Sources
:Product: Report of Solar-Geophysical Activity :Issued: 2023 Jun 03 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 154 Issued at 2200Z on 03 Jun 2023 IA. Analysis of Solar Active Regions and Activity from 02/2100Z to 03/2100Z: Solar activity has been at low levels for the past 24 hours. The largest solar event of the period was a C6 event observed at 02/2242Z from Region 3323 (S07E45). There are currently 7 numbered sunspot regions on the disk. IB. Solar Activity Forecast: Solar activity is expected to be low with a chance for M-class flares and a slight chance for an X-class flare on days one, two, and three (04 Jun, 05 Jun, 06 Jun). IIA. Geophysical Activity Summary 02/2100Z to 03/2100Z: The geomagnetic field has been at quiet levels for the past 24 hours. Solar wind speed reached a peak of 465 km/s at 03/1108Z. Total IMF reached 6 nT at 03/0533Z. The maximum southward component of Bz reached -3 nT at 03/0806Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 319 pfu. IIB. Geophysical Activity Forecast: The geomagnetic field is expected to be at quiet to active levels on day one (04 Jun) and quiet to unsettled levels on days two and three (05 Jun, 06 Jun). Protons have a slight chance of crossing threshold on days one, two, and three (04 Jun, 05 Jun, 06 Jun). III. Event probabilities 04 Jun-06 Jun Class M 35/30/30 Class X 10/10/10 Proton 10/10/10 PCAF green IV. Penticton 10.7 cm Flux Observed 03 Jun 165 Predicted 04 Jun-06 Jun 165/160/160 90 Day Mean 03 Jun 152 V. Geomagnetic A Indices Observed Afr/Ap 02 Jun 008/005 Estimated Afr/Ap 03 Jun 010/013 Predicted Afr/Ap 04 Jun-06 Jun 011/015-011/012-007/008 VI. Geomagnetic Activity Probabilities 04 Jun-06 Jun A. Middle Latitudes Active 30/15/05 Minor Storm 15/05/01 Major-severe storm 01/01/01 B. High Latitudes Active 15/15/15 Minor Storm 20/15/15 Major-severe storm 20/10/05
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”)