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| SSN: | 122 |
| SFI: | 131 |
| A: | 9 |
| K: | 4 |
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Propagation Flash News – X1.7 Flare UnleashedFriday Jan 27, 2012
- By Max IK8LOV - exclusively for DX World.net
BREAKING NEWS
At 1837 UTC a strong X1.7-class flare took place from AR1402. Radio blackouts and S.I.D. expected on sunlit zones of the Earth.
As the Active Region is on the Eastern limb of the Sun, a CME will not hit our geomagnetic field in the next few days.
VP6T operators informed of “total blackout conditions”. Looking at the above map, it’s clear to see they are in the middle of the red hole!
For more news and alerts stay tuned with us.
73 and good DX
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Glossary:
SSN: SESC Sunspot Number by SWPC-NOAA (unless otherwise noted)
ISN: International Sunspot Number by SIDC
AR: Active Region numbered by SWPC-NOAA
Area: Sunspots area in millionths of the Sun’s visible hemisphere
Solar Flux @2800 MHz: Solar Radio Flux at 10.7 cm (measured in Penticton)
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2 Responses to “Propagation Flash News – X1.7 Flare Unleashed”
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I don’t know if it is related to this flare, but I was listeing to II0MZ from Antarctica yesterday at 1805 UTC (that is, a few minutes before the flaare) and he was stronger than he was on the other days. The path to II0MZ was almost entirely in darkness, except for the sector around Antarctica. His signal had some fast QSB, typical of solar flutter.
Hi Fabrizio, nice to meet you here. Before the flare, solar and terrestrial indices didn’t record odd behaviours. So I think that there is no link between two phenomenas.
However a strong propagation increase could be observed immediately after the x-ray emission due to a strong ionization on F-2 and E layers, before D-layer ionization (we all know that D-layer absorbs radio waves).
Furthermore as D-layer (due to its molecular density) “resets” so quickly – recombination – it happens the same in reversed order.
Thank you so much for yur comment!
Max