Previsione Meteo Spaziale - Discussione

Rilasciato: 2018 Aug 19 0030 UTC
Preparato dal Dipartimento di Commercio degli Stati Uniti, NOAA, Space Weather Prediction Center ed elaborato da SpaceWeatherLive.com

Attività solare

Sommario delle 24 ore
Solar activity was very low. Region 2718 (S07W03, Axx/alpha) was stable and quiet. No Earth-directed CMEs were observed in available coronagraph imagery.
Previsione
Solar activity is expected to be very low on 19-21 Aug.

Particelle energetiche

Sommario delle 24 ore
The greater than 2 MeV electron flux reached high levels, with a peak flux of 7,217 pfu observed at 18/1850 UTC. The greater than 10 MeV proton flux continued at background values.
Previsione
The greater than 2 MeV electron flux is expected to reach moderate to high levels levels on 19 Aug and decrease to moderate levels on 20-21 Aug due to the anticipated onset of CH HSS effects. The greater than 10 MeV proton flux is expected to remain at background levels throughout the forecast period.

Vento Solare

Sommario delle 24 ore
Solar wind parameters reflected the waning influence of a positive polarity CH HSS. Total magnetic field strength was at or below 5 nT. Solar wind speeds steadily decreased from near 550 km/s to 450 km/s by the periods end. Phi angle was predominantly positive.
Previsione
Solar wind parameters are expected to continue towards near-background levels over 19 Aug as positive polarity CH HSS influence wanes. An enhancement in total field strength and wind speeds from a negative polarity CH HSS is expected on 20-21 Aug.

Geospace

Sommario delle 24 ore
The geomagnetic field reached active levels due to the waning influence of a positive polarity CH HSS.
Previsione
The geomagnetic field is expected to be quiet to unsettled on 19 Aug as influence from the positive polarity CH HSS wanes. Unsettled to active conditions are expected on 20-21 Aug due to the influence of a subsequent negative polarity CH HSS.
I dati attuali suggeriscono che al momento non è possibile vedere l'aurora alle medie latitudini

Ultime notizie

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Notizie sul meteo spaziale

Ultimo X-flare:2017/09/10X8.2
Ultimo M-flare:2017/10/20M1.0
Ultima tempesta geomagnetica:2018/07/05Kp5 (G1)
Numero di giorni senza macchie nel 2018:130
Ultimo giorno senza macchie:2018/08/13

Questo giorno nella storia*

Flares solari
11998X3.9
22002M3.1
31998M3.0
42004M3.0
52003M2.7
ApG
1200638G2
2200230G1
3201729G1
4199924
5200319G2
*dal 1994

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