Affichage des archives de mercredi, 28 janvier 2004
Rapport d'activité solaire
Any mentioned solar flare in this report has a scaling factor applied by the Space Weather Prediction Center (SWPC). Because of the SWPC scaling factor, solar flares are reported as 42% smaller than for the science quality data. The scaling factor has been removed from our archived solar flare data to reflect the true physical units.
Rapport d'activité solaire et géophysique 2004 Jan 28 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 028 publié à 2200Z le 28 Jan 2004IA. Analyse des régions solaires actives et activité du 27-2100Z au 28-2100Z Solar activity was very low. There were no flares in
the past 24 hours. The solar disk was devoid of spots for most of
the day, but towards the end of the period there was evidence for a
new active region (or regions) rotating on the disk at latitudes
S10-S15, near the location where old Region 536 would be expected.
IB. Prévisions d'activité solaire
Solar activity is expected to be very
low. There should be a slow rise in background levels as the new
active region (or regions) rotate into view.
IIA. Résumé de l'activité géophysique du 27-2100Z au 28-2100Z
The geomagnetic field ranged from unsettled to minor storm levels.
Solar wind velocity showed a gradual increase beginning around 0100
UTC, and this was accompanied by frequent fluctuations in the
interplanetary Bz component in the range of about -7 nT to +7 nT.
These signatures together with a consistent 'away' polarity in the
solar phi angle all suggest that the activity was driven by
favorably positioned positive polarity coronal hole. The greater
than 2 MeV electron fluxes were at high levels during the past 24
hours.
IIB. Prévision de l'activité géophysique
The geomagnetic field is
expected to be unsettled with occasional active periods for the next
two days (29-30 January). An increase to unsettled to active is
expected on the third day (31 January) as another coronal hole
rotates into favorable position.
III. Probabilité d'éruption solaire du 29 Jan au 31 Jan
| Classe M | 01% | 01% | 01% |
| Classe X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Flux Penticton 10.7 cm
Observé 28 Jan 089 Prévisionnel 29 Jan-31 Jan 100/105/105 Moyenne des 90 derniers jours 28 Jan 126
V. Indice géomagnetique A
Observé Afr/Ap 27 Jan 013/016 Estimé Afr/Ap 28 Jan 015/019 Prévisionnel Afr/Ap 29 Jan-31 Jan 010/015-010/015-010/020
VI. Probabilités d'activité géomagnétique du 29 Jan au 31 Jan
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 25% | 25% | 25% |
| Tempête mineure | 15% | 15% | 15% |
| Tempête majeure/sévère | 05% | 05% | 05% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 30% | 30% | 30% |
| Tempête mineure | 20% | 20% | 20% |
| Tempête majeure/sévère | 05% | 05% | 05% |
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