Affichage des archives de dimanche, 7 avril 2002
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 2002 Apr 07 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 097 publié à 2200Z le 07 Apr 2002IA. Analyse des régions solaires actives et activité du 06-2100Z au 07-2100Z Solar activity was at low levels. Region 9893 (N18E27)
produced most of today's activity as well as the largest flare of
the day, a C9/1f flare occurring at 07/0523 UTC. The growth of
several additional spots seen today in this region although areal
coverage went mostly unchanged from yesterday. A source region
beyond the east limb produced a Type II radio sweep at 07/0012 UTC
that had an estimated shock velocity of 586 km/s. LASCO
differencing imagery captured an east limb CME shortly after the
Type II was observed, although it is unlikely this event will be
geoeffective. New Regions 9900 (S29E07), 9901 (N20E37), and 9902
(N11E75) were numbered today.
IB. Prévisions d'activité solaire
Solar activity is expected to be
predominantly low to moderate, although Region 9893 and 9897
(S02W17) both possess the potential to produce an isolated major
flare.
IIA. Résumé de l'activité géophysique du 06-2100Z au 07-2100Z
The geomagnetic field activity was at quiet to unsettled levels. The
greater than 2 MeV electron flux observed at geosynchronous orbit
continued a steady drop from moderately enhanced levels today.
IIB. Prévision de l'activité géophysique
Geomagnetic field activity is
expected to be at quiet to unsettled levels with isolated active
periods possible on days one and two of the forecast period. Day
three should return to predominantly quiet conditions. The greater
than 2 Mev electron flux should be slightly enhanced through the
first day of the period.
III. Probabilité d'éruption solaire du 08 Apr au 10 Apr
| Classe M | 60% | 60% | 60% |
| Classe X | 10% | 10% | 10% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Flux Penticton 10.7 cm
Observé 07 Apr Prévisionnel 08 Apr-10 Apr 200/190/185 Moyenne des 90 derniers jours 07 Apr 201
V. Indice géomagnetique A
Observé Afr/Ap 06 Apr 004/005 Estimé Afr/Ap 07 Apr 008/010 Prévisionnel Afr/Ap 08 Apr-10 Apr 012/012-007/007-004/007
VI. Probabilités d'activité géomagnétique du 08 Apr au 10 Apr
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 20% | 20% | 15% |
| Tempête mineure | 05% | 01% | 01% |
| Tempête majeure/sévère | 01% | 01% | 01% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 25% | 20% | 15% |
| Tempête mineure | 10% | 05% | 01% |
| Tempête majeure/sévère | 01% | 01% | 01% |
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