Affichage des archives de dimanche, 23 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 23 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 143 publié à 2200Z le 23 MAY 1999IA. Analyse des régions solaires actives et activité du 22-2100Z au 23-2100Z SOLAR ACTIVITY WAS LOW. THERE WERE EIGHT LOW-LEVEL
C-CLASS EVENTS DURING THE PAST 24 HOURS. OF THE REGIONS ON THE DISK,
8545 (N36W37), 8550 (S14E30), AND 8551 (N33E37) WERE THE MOST
ACTIVE. BOTH REGION 8545 AND 8551 HAVE COMPLICATED INVERSION LINES
BUT RELATIVELY WEAK MAGNETIC STRENGTHS NEAR THE APPARENT SHEAR
POINTS. REGION 8550 IS GROWING SLOWLY AND APPEARED TO BE FORMING A
MODERATE STRENGTH DELTA CONFIGURATION. NEW REGION 8552 (N21E80)
BEGAN TO ROTATE INTO VIEW TODAY WITH THE APPEARANCE OF A LEADER SPOT
WITH MATURE PENUMBRA.
IB. Prévisions d'activité solaire
SOLAR ACTIVITY IS EXPECTED TO BE
MOSTLY LOW, BUT THERE IS A FAIR CHANCE FOR AN ISOLATED M-CLASS EVENT
SOMETIME DURING THE NEXT THREE DAYS.
IIA. Résumé de l'activité géophysique du 22-2100Z au 23-2100Z
THE GEOMAGNETIC FIELD RANGED FROM QUIET TO ACTIVE LEVELS. THE GREATER
THAN 2 MEV ELECTRONS ATTAINED HIGH LEVELS DURING THE PAST 24 HOURS
BUT APPEARED TO BE DECREASING TOWARDS NORMAL BACKGROUND LEVELS NEAR
THE END OF THE REPORTING PERIOD.
IIB. Prévision de l'activité géophysique
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE MOSTLY UNSETTLED FOR THE NEXT THREE DAYS. THERE IS AN
ENHANCED POSSIBILITY FOR SOME ACTIVE PERIODS ON THE THIRD DAY DUE TO
RECURRENCE EFFECTS.
III. Probabilité d'éruption solaire du 24 MAY au 26 MAY
| Classe M | 30% | 30% | 30% |
| Classe X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Flux Penticton 10.7 cm
Observé 23 MAY 141 Prévisionnel 24 MAY-26 MAY 143/145/145 Moyenne des 90 derniers jours 23 MAY 128
V. Indice géomagnetique A
OBSERVED AFR/AP 22 MAY 003/005 ESTIMATED AFR/AP 23 MAY 010/008 PREDICTED AFR/AP 24 MAY-26 MAY 010/012-010/012-015/012
VI. Probabilités d'activité géomagnétique du 24 MAY au 26 MAY
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 15% | 15% | 25% |
| Tempête mineure | 05% | 05% | 10% |
| Tempête majeure/sévère | 01% | 01% | 05% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 15% | 15% | 30% |
| Tempête mineure | 10% | 10% | 15% |
| Tempête majeure/sévère | 05% | 05% | 10% |
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