HFU HF Underground
General Category => General Radio Discussion => Topic started by: Skipmuck on March 17, 2015, 2241 UTC
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After a quick tune around the bands around 2200 UTC, I noticed that the propagation was very disturbed and the noise was really bad...things just weren't making it through that are daily loggings here. I checked the NOAA propagation report and sure enough...A-index of 100 and K-index of 7. Aurora watchers should have a field day this evening!
Should I put on my tinfoil hat just to be on the safe side ;D
EDIT:Technically speaking, this is actually a geomagnetic field activity alert ;)
"Coronal Mass Ejection" or CME from March 11th has reached us
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Hearing Observatorio Nacional Rio 10000kHz now in lieu of the absent WWV.
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18-Mar-2015 at 0015 UTC
SFI = 114 A = 117 K = 8
I don't recall the last time the A-Index was higher than the Solar Flux ???
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Apparently, auroral activity was seen as far south as the Dakotas in the hours before sunrise today.
The storm is subsiding but still active, so a chance to see some may be possible after dark in the northern tier of the U.S.
As an aside, the only time signal I can hear at the moment is WWV's 5 MHz signal.
The latest solar weather update:
Space Weather Message Code: ALTK05
Serial Number: 773
Issue Time: 2015 Mar 18 0032 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2015 Mar 18 0028 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.