Affichage des archives de lundi, 22 novembre 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 Nov 22 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 326 publié à 2200Z le 22 NOV 1999IA. Analyse des régions solaires actives et activité du 21-2100Z au 22-2100Z SOLAR ACTIVITY DECREASED TO LOW LEVELS. REGION 8765
(S13W72) SHOWED GRADUAL DECAY AS IT APPROACHED THE WEST LIMB, BUT
REMAINED LARGE AND MAGNETICALLY COMPLEX. IT PRODUCED ISOLATED
SUBFLARES DURING THE PERIOD INCLUDING A C8/SF AT 22/1217Z. REGION
8771 (S16W11) ALSO PRODUCED ISOLATED SUBFLARES. IT SHOWED GRADUAL
GROWTH AND REMAINED MODERATE IN SIZE AND MAGNETIC COMPLEXITY. REGION
8776 (S29W01) GREW GRADUALLY AND PRODUCED ISOLATED SUBFLARES, BUT
REMAINED A SIMPLY-STRUCTURED BIPOLE. REGION 8766 (N17W49) CONTINUED
TO SLOWLY DECAY. NO NEW REGIONS WERE ASSIGNED.
IB. Prévisions d'activité solaire
SOLAR ACTIVITY IS EXPECTED TO BE
MODERATE. REGIONS 8765 AND 8771 COULD PRODUCE ISOLATED M-CLASS
FLARES. THERE IS ALSO A SLIGHT CHANCE FOR AN ISOLATED MAJOR FLARE
FROM EITHER OF THESE REGIONS.
IIA. Résumé de l'activité géophysique du 21-2100Z au 22-2100Z
GEOMAGNETIC FIELD ACTIVITY RANGED FROM QUIET TO ACTIVE LEVELS. ACTIVE
LEVELS OCCURRED DURING 22/1100 - 1400Z IN RESPONSE TO A PERIOD OF
SUSTAINED SOUTHWARD IMF BZ. THE GREATER THAN 2 MEV ELECTRON FLUX
DECLINED TO NORMAL TO MODERATE LEVELS.
IIB. Prévision de l'activité géophysique
GEOMAGNETIC FIELD ACTIVITY IS
EXPECTED TO BE AT QUIET TO (BRIEFLY) ACTIVE LEVELS DURING THE FIRST
DAY DUE TO CORONAL HOLE EFFECTS. QUIET TO UNSETTLED LEVELS ARE
EXPECTED DURING THE REMAINDER OF THE PERIOD. THERE IS A SLIGHT
CHANCE FOR A PROTON EVENT AT GEOSYNCHRONOUS ORBIT, SHOULD A MAJOR
FLARE OCCUR FROM REGIONS 8765 OR 8771.
III. Probabilité d'éruption solaire du 23 NOV au 25 NOV
| Classe M | 75% | 70% | 70% |
| Classe X | 15% | 10% | 10% |
| Proton | 10% | 05% | 05% |
| PCAF | YELLOW | ||
IV. Flux Penticton 10.7 cm
Observé 22 NOV 192 Prévisionnel 23 NOV-25 NOV 185/170/165 Moyenne des 90 derniers jours 22 NOV 167
V. Indice géomagnetique A
OBSERVED AFR/AP 21 NOV 011/010 ESTIMATED AFR/AP 22 NOV 012/015 PREDICTED AFR/AP 23 NOV-25 NOV 015/018-012/015-010/010
VI. Probabilités d'activité géomagnétique du 23 NOV au 25 NOV
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 35% | 25% | 20% |
| Tempête mineure | 15% | 10% | 05% |
| Tempête majeure/sévère | 01% | 01% | 01% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 40% | 30% | 25% |
| Tempête mineure | 20% | 15% | 10% |
| Tempête majeure/sévère | 01% | 01% | 01% |
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