Bulletins prévisionnels de la Météo Spatiale

Publié: 2019 Mar 18 1230 UTC
Préparés par le Département américain du Commerce, la NOAA, le Centre de Prévision de la Météo spatiale et traités par SpaceWeatherLive.com

Activité solaire

Résumé des dernières 24 heures
Solar activity was at very low levels. Newly numbered Region 2735 (N03E23, Bxo/beta) exhibited most of its development in the leader spot while the trailer spot ended the period in decay. No Earth-directed CMEs were observed in available satellite imagery.
Prévisions
Solar activity is expected to continue at very low levels for the next three days (18-20 Mar).

Particules énergétiques

Résumé des dernières 24 heures
The greater than 2 MeV electron flux reached moderate levels and the greater than 10 MeV proton flux remained at background levels.
Prévisions
The greater than 2 MeV electron flux is expected to be at normal to moderate levels on 18-20 Mar and the greater than 10 MeV proton flux is expected to maintain background levels.

Vent Solaire

Résumé des dernières 24 heures
Solar wind parameters, as measured by the DSCOVR spacecraft, reflected a return to nominal conditions. Total magnetic field strength decreased from a peak of 9 nT to at or below 5 nT after 18/0255 UTC. Bz was predominantly positive. Solar wind speeds declined from around 400 km/s to near 350 km/s by the periods end. Phi angle transitioned from the positive sector to the negative sector over the last half of the reporting period.
Prévisions
Solar wind conditions are likely to continue at ambient levels on 18-19 Mar. On 20 Mar, enhanced conditions are anticipated due to influence from a recurrent, positive polarity CH HSS.

Géospatial

Résumé des dernières 24 heures
The geomagnetic field mostly quiet.
Prévisions
The geomagnetic field is expected to be at mostly quiet levels on days one and two (18-19 Mar). Quiet to unsettled conditions are expected on day three (20 Mar) due to anticipated influence from a recurrent CH HSS.

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La Météo Spatiale en faits

Dernière classe X:10/09/2017X8.2
Dernière classe M:20/10/2017M1.0
Dernier orage géomagnétique:17/03/2019Kp5 (G1)
Nombre de jours sans taches solaires en 2019:53
Étirement actuel jours sans taches solaires:6

A ce jour dans l'histoire*

Éruptions solaires
12003X1.5
22000M3.9
31999M3.3
42000M2.6
52003M2.5
ApG
1201547G2
2200630G2
3200328G1
4201822G2
5199420G1
*depuis 1994

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