Affichage des archives de mardi, 24 novembre 1998
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 1998 Nov 24 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 328 publié à 2200Z le 24 NOV 1998IA. Analyse des régions solaires actives et activité du 23-2100Z au 24-2100Z SOLAR ACTIVITY REMAINED AT HIGH LEVELS. REGION 8384
(S26W114) PRODUCED ANOTHER MAJOR FLARE AS IT CONTINUED TO ROTATE
BEYOND THE WEST LIMB. THE FLARE WAS AN OPTICALLY UNCORRELATED X1 AT
24/0220Z WITH AN ASSOCIATED TYPE II RADIO SWEEP AT 24/0217Z. THE
TYPE II SPEED WAS ESTIMATED AT 400 KM/S. A 470 SFU TENFLARE WAS
ALSO DETECTED DURING THE X1 EVENT. SEVERAL OPTICALLY UNCORRELATED,
LOW LEVEL C-CLASS FLARES WERE ALSO DETECTED DURING THE PERIOD. TWO
NEW REGIONS WERE NUMBERED TODAY. REGION 8394 (S16W49), AND REGION
8395 (N17E81).
IB. Prévisions d'activité solaire
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE. M-CLASS FLARE PROBABLILITIES MAY INCREASE AS REGION
8393 (S18E62) AND REGION 8395 ROTATE FURTHER TO THE WEST. THE
LOCATION OF REGION 8395 CORRELATES WELL WITH OLD REGION 8375, WHICH
PRODUCED A MAJOR FLARE AND A SOLAR PROTON EVENT DURING ITS LAST
ROTATION.
IIA. Résumé de l'activité géophysique du 23-2100Z au 24-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO ACTIVE. THE GT 10 MEV PROTON FLUX
WAS ENHANCED DURING PART OF THE PERIOD THAT FOLLOWED THE X-CLASS
FLARE EARLY TODAY, AND HAS NOW DECREASED TO BACKGROUND LEVELS.
IIB. Prévision de l'activité géophysique
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED WITH ISOLATED ACTIVE CONDITIONS
POSSIBLE.
III. Probabilité d'éruption solaire du 25 NOV au 27 NOV
| Classe M | 40% | 30% | 30% |
| Classe X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Flux Penticton 10.7 cm
Observé 24 NOV 140 Prévisionnel 25 NOV-27 NOV 145/145/150 Moyenne des 90 derniers jours 24 NOV 131
V. Indice géomagnetique A
OBSERVED AFR/AP 23 NOV 008/010 ESTIMATED AFR/AP 24 NOV 012/011 PREDICTED AFR/AP 25 NOV-27 NOV 010/012-010/009-010/009
VI. Probabilités d'activité géomagnétique du 25 NOV au 27 NOV
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 25% | 25% | 25% |
| Tempête mineure | 10% | 05% | 05% |
| Tempête majeure/sévère | 01% | 01% | 01% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 35% | 35% | 35% |
| Tempête mineure | 10% | 10% | 05% |
| Tempête majeure/sévère | 01% | 01% | 01% |
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