Affichage des archives de lundi, 9 novembre 1998
Rapport d'activité solaire
Chaque éruption solaire mentionnée dans ce rapport a été ajustée selon un facteur d'échelle fourni par le Space Weather Prediction Center (SWPC). Ce facteur a conduit à une sous-estimation de 42% des éruptions solaires par rapport aux données de qualité scientifique. Nous avons supprimé ce facteur d'échelle de nos données archivées pour refléter les véritables unités physiques.
Rapport d'activité solaire et géophysique 1998 Nov 09 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 313 publié à 2200Z le 09 NOV 1998IA. Analyse des régions solaires actives et activité du 08-2100Z au 09-2100Z SOLAR ACTIVITY REMAINED MODERATE. REGION 8375 (N21W74)
PRODUCED AN M1/1F AT 08/2256Z. THIS REGION RETAINED ITS MIXED
POLARITIES AND ITS AREAL COVERAGE IN WHITE LIGHT WAS UNCHANGED. NEW
REGION 8384 (S27E78) APPEARED AS A MODERATE SIZE H CLASS SPOT. A
SUSPECTED SPRAY OCCURRED FROM THIS REGION BETWEEN 09/0134-0216Z.
THIS EVENT MAY HAVE BEEN ASSOCIATED WITH A C3 X-RAY ENHANCEMENT AT
09/0153Z. A FILAMENT LOCATED NEAR N24E25 FADED BETWEEN
08/2318-2330Z. SEVERAL CORONAL MASS EJECTIONS WERE OBSERVED IN THE
SOHO CORONAGRAPH DURING THE PERIOD. THE LARGEST WERE FROM MODERATELY
HIGH LATITUDES ON THE SOUTHEAST AND NORTHWEST LIMBS. THE MAUNA LOA
CORONAGRAPH OBSERVED AN ERUPTIVE PROMINENCE AND ASSOCIATED CORONAL
MASS EJECTION FROM NW40-70 BEGINNING AT 09/1915Z.
IB. Prévisions d'activité solaire
SOLAR ACTIVITY SHOULD BE LOW TO
MODERATE FOR 10-11 NOV. REGION 8375 REMAINS CAPABLE OF PRODUCING
OCCASIONAL M-CLASS EVENTS AND ISOLATED LARGER EVENTS. REGION 8384
COULD PRODUCE AN ISOLATED M-CLASS EVENT.
IIA. Résumé de l'activité géophysique du 08-2100Z au 09-2100Z
THE GEOMAGNETIC FIELD RANGED FROM UNSETTLED TO MAJOR STORM LEVELS.
THE MOST DISTURBED PERIOD WAS FROM 09/0600-1200Z. SOME HIGH LATITUDE
SITES EXPERIENCED SEVERE STORMING DURING THAT TIME. SOLAR WIND DATA
WAS CHARACTERIZED BY A STRONG SOUTHWARD BZ BEGINNING AROUND
09/0330Z, DECREASING VELOCITY, AND DECREASING TOTAL FIELD MAGNITUDE.
A FORBUSH DECREASE OF APPROXIMATELY 6 PERCENT WAS OBSERVED NEAR
09/0100Z.
IIB. Prévision de l'activité géophysique
THE GEOMAGNETIC FIELD SHOULD BE
AT UNSETTLED TO MINOR STORM LEVELS FOR 10 NOV. PERIODS OF MAJOR
STORMING ARE POSSIBLE ON THAT DAY. QUIET TO ACTIVE CONDITIONS ARE
EXPECTED ON 11 NOV AS THE CURRENT DISTURBANCE SUBSIDES. QUIET TO
UNSETTLED CONDITIONS SHOULD OCCUR ON 12 NOV.
III. Probabilité d'éruption solaire du 10 NOV au 12 NOV
| Classe M | 65% | 60% | 15% |
| Classe X | 30% | 25% | 10% |
| Proton | 30% | 25% | 20% |
| PCAF | GREEN | ||
IV. Flux Penticton 10.7 cm
Observé 09 NOV 162 Prévisionnel 10 NOV-12 NOV 162/156/145 Moyenne des 90 derniers jours 09 NOV 133
V. Indice géomagnetique A
OBSERVED AFR/AP 08 NOV 036/068 ESTIMATED AFR/AP 09 NOV 035/072 PREDICTED AFR/AP 10 NOV-12 NOV 020/025-012/012-010/012
VI. Probabilités d'activité géomagnétique du 10 NOV au 12 NOV
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 20% | 20% | 20% |
| Tempête mineure | 10% | 10% | 10% |
| Tempête majeure/sévère | 15% | 10% | 05% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 15% | 10% | 10% |
| Tempête mineure | 10% | 05% | 05% |
| Tempête majeure/sévère | 15% | 05% | 05% |
Toutes les heures sont indiquées en UTC
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