Affichage des archives de jeudi, 6 avril 2000
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 2000 Apr 06 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 097 publié à 2200Z le 06 APR 2000IA. Analyse des régions solaires actives et activité du 05-2100Z au 06-2100Z SOLAR ACTIVITY WAS MODERATE. REGION 8948 (S12E42)
PRODUCED AN M1/2B FLARE AT 06/0229UT. THIS EVENT WAS ACCOMPANIED BY
A MINOR RADIO BURST AND A TYPE II SWEEP (ESTIMATE SHOCK VELOCITY OF
700KM/S). REGION 8948 RETAINS SOME MAGNETIC COMPLEXITY, BUT IT
AND MOST OF THE OTHER 11 SPOTTED REGIONS ON THE DISK APPEAR TO BE
SLOWLY DECLINING. REGION 8933 (N19W96) HAS QUIETLY ROTATED OFF THE
DISK. THE SMALL FILAMENT NEAR S15 E10 DISAPPEARED EARLY TODAY.
IB. Prévisions d'activité solaire
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE. RETURNING REGION 8910 (N13 L=069), A MAJOR FLARE
PRODUCER LAST ROTATION, IS DUE BACK ON THE EAST LIMB LATE TOMORROW.
IIA. Résumé de l'activité géophysique du 05-2100Z au 06-2100Z
THE GEOMAGNETIC FIELD RANGED FROM UNSETTLED TO MAJOR STORM LEVELS. A
SHOCK WAS OBSERVED BY THE ACE SPACECRAFT AROUND 06/1600UT. THE
ASSOCIATED SUDDEN IMPULSE WAS OBSERVED AT 1640UT (37NT AS OBSERVED
AT SAN JUAN) AND THE FIELD HAS BEEN AT MAJOR STORM LEVELS SINCE THAT
TIME. THERE WERE MAGNETOPAUSE CROSSINGS OBSERVED ON BOTH GOES 8 AND
GOES 10 STARTING AROUND 1800UT. THIS DISTURBANCE IS MOST LIKELY THE
CONSEQUENCE OF THE HALO CME OBSERVED FOLLOWING THE C9/2F FLARE AT
04/1541UT. THE SATELLITE PROTON EVENT WHICH BEGAN AT 04/2055UT,
ENDED TODAY AT 0155UT.
IIB. Prévision de l'activité géophysique
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE AT STORM LEVELS FOR MUCH OF TOMORROW. THE FIELD IS
EXPECTED TO RETURN TO UNSETTLED LEVELS BY THE END OF THE PERIOD.
III. Probabilité d'éruption solaire du 07 APR au 09 APR
| Classe M | 50% | 50% | 50% |
| Classe X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | GREEN | ||
IV. Flux Penticton 10.7 cm
Observé 06 APR 178 Prévisionnel 07 APR-09 APR 175/180/180 Moyenne des 90 derniers jours 06 APR 185
V. Indice géomagnetique A
OBSERVED AFR/AP 05 APR 014/012 ESTIMATED AFR/AP 06 APR 030/033 PREDICTED AFR/AP 07 APR-09 APR 025/030-010/020-008/015
VI. Probabilités d'activité géomagnétique du 07 APR au 09 APR
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 35% | 15% | 15% |
| Tempête mineure | 35% | 10% | 10% |
| Tempête majeure/sévère | 11% | 01% | 01% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 30% | 40% | 20% |
| Tempête mineure | 40% | 20% | 10% |
| Tempête majeure/sévère | 06% | 01% | 01% |
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