5 ms·
what "these" do we have 100 of? X class flares, or X class flares facing the Earth? Because just by chance we are usually out of harm's way.
by dbcurtis 9y ago
what "these" do we have 100 of? X class flares, or X class flares facing the Earth? Because just by chance we are usually out of harm's way.
- lgats 9y agoHaving subscribed to NOAA's alerts a couple years ago, I would say we might get an event like this once a year or two
- jsjohnst 9y agoPer the link above, this is the 8th most powerful CME hitting earth in recorded history. An X9.3 is not a yearly thing.
- Rebelgecko 9y agoHow far back does "recorded history" go for these sorts of detailed space weather measurements? The linked #8 ranking seems to be based on 20 years of data
- SolarNet 9y agoI think they go back to the early telegraph based off of observations of static on the wire and other related problems (a telegraph was basically a giant inductor).
- Rebelgecko 9y agoAre those classifications listed somewhere? I suspect that they'd be much less accurate than the measurements from modern equipment (e.g. satellites)
- PoachedSausage 9y agoAs far back as the Carrington Event at least. https://en.wikipedia.org/wiki/Solar_storm_of_1859 https://en.wikipedia.org/wiki/Solar_storm_of_1859
- colanderman 9y agoG4 geomagnetic storms. (I'm just parroting the chart I linked.)