Affichage des archives de dimanche, 30 mai 1999
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 1999 May 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 150 publié à 2200Z le 30 MAY 1999IA. Analyse des régions solaires actives et activité du 29-2100Z au 30-2100Z SOLAR ACTIVITY WAS LOW. THE PERIOD WAS HIGHLIGHTED BY
SEVERAL SUBFLARES IN REGION 8558 (N16E43) AND A PAIR OF C1 X-RAY
LONG DURATION EVENTS (LDE). REGION 8558 EXHIBITED STEADY GROWTH AND
NOW CONSISTS OF APPROXIMATELY 30 SPOTS MEASURING 300 MILLIONTHS OF
WHITE LIGHT AREA. FREQUENT BRIGHTNESS FLUCTUATIONS AND SURGES WERE
ALSO OBSERVED IN THIS REGION, BUT ONLY MINOR MAGNETIC COMPLEXITY WAS
NOTED. THE FIRST OF TWO C1 LDE X-RAY EVENTS OCCURRED AT 30/0328Z,
LIKELY ASSOCIATED WITH A CME OFF THE NE LIMB. THE SECOND C1 LDE
OCCURRED AT 30/1155Z AND ALSO APPEARS TO BE ASSOCIATED WITH A CME,
THIS TIME FROM THE W LIMB.
IB. Prévisions d'activité solaire
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE. CONTINUED C-CLASS ACTIVITY IS LIKELY FROM REGION 8558
AND C-CLASS FLARES ARE ALSO POSSIBLE FROM 8560 (S24E35), 8552
(N19W18), AND 8559 (N20E03) WITH AN OUTSIDE CHANCE FOR AN M-CLASS.
IIA. Résumé de l'activité géophysique du 29-2100Z au 30-2100Z
THE GEOMAGNETIC FIELD WAS QUIET
IIB. Prévision de l'activité géophysique
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED. GEOMAGNETIC ACTIVITY IS NOT
EXPECTED FROM THE LONG DURATION C1 X-RAY EVENTS AND ASSOCIATED CME'S
DUE TO THE PRESUMED DIRECTION OF THE EJECTA.
III. Probabilité d'éruption solaire du 31 MAY au 02 JUN
| Classe M | 40% | 40% | 40% |
| Classe X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | GREEN | ||
IV. Flux Penticton 10.7 cm
Observé 30 MAY 157 Prévisionnel 31 MAY-02 JUN 160/160/160 Moyenne des 90 derniers jours 30 MAY 131
V. Indice géomagnetique A
OBSERVED AFR/AP 29 MAY 003/006 ESTIMATED AFR/AP 30 MAY 007/006 PREDICTED AFR/AP 31 MAY-02 JUN 010/010-008/010-008/008
VI. Probabilités d'activité géomagnétique du 31 MAY au 02 JUN
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 20% | 20% | 20% |
| Tempête mineure | 01% | 01% | 01% |
| Tempête majeure/sévère | 01% | 01% | 01% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 25% | 25% | 25% |
| Tempête mineure | 05% | 05% | 05% |
| Tempête majeure/sévère | 01% | 01% | 01% |
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