Affichage des archives de lundi, 30 juillet 2012
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 2012 Jul 30 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 212 publié à 2200Z le 30 Jul 2012IA. Analyse des régions solaires actives et activité du 29-2100Z au 30-2100Z Solar activity was moderate. Region 1532 (S19E14) and
new Region 1536 (S21E26) were responsible for the highest flares
during the period: a C8/1n flare at 30/1403Z and an M1/Sn at
30/1548Z respectively. Analysis with magnetogram and white light
imagery determined that Region 1532 was actually two separate
regions. New Region 1536 now encompasses the two larger spots
trailing Region 1532. Another new spot group rotated onto the
northeast limb and was numbered Region 1535 (N18E64). No
Earth-directed coronal mass ejections were observed during the
reporting period.
IB. Prévisions d'activité solaire
Solar activity is expected to be low
with a chance for M-class flares. Regions 1532 and 1536 are the
most likely Regions to produce M-class activity.
IIA. Résumé de l'activité géophysique du 29-2100Z au 30-2100Z
The geomagnetic field was quiet to active with intervals of minor to
major storming observed at high latitudes during the periods ranging
from 30/0600 - 0900Z and from 30/1200 - 1800Z. Solar wind speed,
measured at the ACE spacecraft, increased from approximately 350 to
450 km/s, while the Bz component of the interplanetary magnetic
field had prolonged southward intervals near -7 nT.
IIB. Prévision de l'activité géophysique
The geomagnetic field is
expected to be quiet to unsettled on day 1 (31 July). Mostly quiet
conditions are expected on day 2 (01 August). By approximately
mid-day on day 3 (02 August), quiet to unsettled conditions are
expected with isolated active periods possible due to effects from
the 28 July CME.
III. Probabilité d'éruption solaire du 31 Jul au 02 Aug
| Classe M | 35% | 35% | 35% |
| Classe X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | Green | ||
IV. Flux Penticton 10.7 cm
Observé 30 Jul 136 Prévisionnel 31 Jul-02 Aug 135/135/140 Moyenne des 90 derniers jours 30 Jul 126
V. Indice géomagnetique A
Observé Afr/Ap 29 Jul 006/006 Estimé Afr/Ap 30 Jul 009/012 Prévisionnel Afr/Ap 31 Jul-02 Aug 008/010-006/006-008/010
VI. Probabilités d'activité géomagnétique du 31 Jul au 02 Aug
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 10% | 05% | 20% |
| Tempête mineure | 05% | 01% | 10% |
| Tempête majeure/sévère | 01% | 01% | 01% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 15% | 15% | 15% |
| Tempête mineure | 20% | 15% | 25% |
| Tempête majeure/sévère | 10% | 05% | 30% |
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