Tempesta solare in corso, ma il picco è passato

[serastrof]

Intorno a mezzogiorno del 09/01/2014 sono stati previsti effetti da parte della tempesta solare del 07/01/2014.

http://www.corriere.it/scienze/14_genna ... 24c5.shtml

DAL SITO DELLA NOAA:

Gli indici geomagnetici e solari sembrerebbero invece dire che il picco massimo si sarebbe avuto ieri 8 gennaio 2014:

http://www.swpc.noaa.gov/alerts/solar_indices.html

Comunque oggi il sito della NOAA americana, così pubblica fra le "TOP NEWS" del meteo nell'ambito del Sistema Solare:

Top News of the Day
2014-01-09 00:03 S3 (Strong) Solar Radiation Storm In Progress

The ongoing S2 (Moderate) Solar Radiation Storm has intensified to an S3 (Strong) event as of 2320 UTC (6:20 p.m. EST) today, January 8. Protons should stay at this same approximate level for the next few hours, then likely take another jump with the passage of the shock ahead of the CME, expected to occur around 0900 UTC (4:00 a.m. EST) tomorrow, January 9. However, this increase is not expected to exceed the S3 level. The CME is forecast to set off G3 (Strong) Geomagnetic Storm activity through January 9 and 10. Aurora watchers should be ready; updates here as things unfold.


2014-01-08 12:30 G3 (Strong) Geomagnetic Storming Expected

SWPC Forecasters are anticipating G3 (Strong) Geomagnetic Storm conditions to occur on January 9 and 10. The source of this disturbance is a fairly fast Earth-directed coronal mass ejection (CME) launched from centrally-located Region 1944 at 1832 UTC (1:32 p.m. EST) on January 7. Full evaluation and modeling of this event has refined the forecast and indicates a fairly direct interaction with Earth, with the WSA-Enlil model putting arrival mid-morning UTC on January 9 (very early morning EST). In addition, the S2 (Moderate) Solar Radiation Storm associated with this event is currently near, but below, the S3 (Strong) threshold, with values leveling off at this time. At the Sun, Region 1944 remains well-placed and energetic. Updates here as this event progresses.


2014-01-08 05:48 CME Impacts Expected January 9

SWPC Forecasters are anticipating G2 (Moderate) Geomagnetic Storm conditions to occur on January 9, followed by G1 (Minor) levels January 10. The source of this pulse is an Earth-directed CME launched from centrally-located Region 1944 at 1832 UTC (1:32 p.m. EST) today, January 7. This forecast is pending the acquisition of some data as yet unavailable, and may be updated. In addition, the current S2 (Moderate) Solar Radiation Storm is likely to linger for another 24 hours. At the Sun, Region 1944 remains well-placed and energetic. Watch here for more as conditions warrant.



2014-01-07 22:11 CME Impacts Expected January 9

SWPC Forecasters are anticipating G2 (Moderate) Geomagnetic Storm conditions to occur on January 9, followed by G1 (Minor) levels January 10. The source of this pulse is an Earth-directed CME launched from centrally-located Region 1944 at 1832 UTC (1:32 p.m. EST) today January 7. This forecast is pending the acquisition of some data as yet unavailable, and may be updated. In addition, the current S1 (Minor) Solar Radiation Storm is likely to linger for another 24 hours. At the Sun, Region 1944 remains well-placed and energetic. Watch here for more as conditions warrant.



2014-01-07 22:09 CME Impacts Expected January 9

SWPC Forecasters are anticipating G2 (Moderate) Geomagnetic Storm conditions to occur on January 9, followed by G1 (Minor) levels January 10. The source of this pulse is an Earth-directed CME launched from centrally-located Region 1944 at 1832 UTC (1:32 p.m. EST) today January 7. This forecast is pending the acquisition of some data as yet unavailable, and may be updated. In addition, the current S1 (Minor) Solar Radiation Storm is likely to linger for another 24 hours. At the Sun, Region 1944 remains well-placed and energetic. Watch for here more as conditions warrant.