Affichage des archives de mardi, 25 juillet 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 Jul 25 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 207 publié à 2200Z le 25 JUL 2000IA. Analyse des régions solaires actives et activité du 24-2100Z au 25-2100Z SOLAR ACTIVITY HAS BEEN HIGH. REGION 9097 (N08W15),
CURRENTLY THE LARGEST GROUP ON THE DISK, PRODUCED AN M8/2B FLARE AT
0249Z WHICH WAS ACCOMPANIED BY TYPE II AND TYPE IV RADIO SWEEPS. AN
ASSOCIATED FAINT HALO CME WAS OBSERVED BY LASCO, BEGINNING AT
0330Z. THIS REGION PRODUCED AN ADDITIONAL M-CLASS EVENT: AN M1/1B AT
1846Z. REGION 9087 (S10W80) PRODUCED AN M3/2N AT 0456Z. THE GROUP
CONTINUES TO BE A LARGE, F-TYPE REGION AS IT APPROACHES WEST LIMB.
SOME GROWTH WAS NOTED IN REGION 9090 (N15W48) BUT THE GROUP COULD
ONLY MUSTER A C6/SN FLARE AT 1241Z.
IB. Prévisions d'activité solaire
SOLAR ACTIVITY IS EXPECTED TO BE
MODERATE, WITH REGIONS 9087, 9097, AND 9090 BEING THE MOST LIKELY
SOURCES FOR M-CLASS FLARES. THERE IS A CHANCE FOR AN ISOLATED
X-CLASS OR PROTON PRODUCING FLARE DURING THE NEXT THREE DAYS.
IIA. GEOPHYSICAL ACTIVITY SUMMARY 24/2100Z TO 25/2100Z:
THE GEOMAGNETIC FIELD HAS BEEN QUIET TO UNSETTLED.
IIB. Prévision de l'activité géophysique
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE UNSETTLED WITH POSSIBLE ACTIVE PERIODS DURING THE
NEXT 24 HOURS. AN INCREASE MAY OCCUR IF EFFECTS FROM THE CME OF 24
JULY MATERIALIZE. MOSTLY UNSETTLED CONDITIONS SHOULD PREVAIL ON
THE SECOND DAY, AND AN INCREASE TO ACTIVE (WITH POSSIBLE MINOR-TO-
MAJOR STORM PERIODS) IS EXPECTED SOMETIME ON THE THIRD DAY. THIS
INCREASE IS PREDICTED BECAUSE OF THE HALO CORONAL MASS EJECTION
MENTIONED IN PART IA.
III. Probabilité d'éruption solaire du 26 JUL au 28 JUL
| Classe M | 75% | 70% | 65% |
| Classe X | 25% | 25% | 20% |
| Proton | 25% | 25% | 20% |
| PCAF | YELLOW | ||
IV. Flux Penticton 10.7 cm
Observé 25 JUL 202 Prévisionnel 26 JUL-28 JUL 190/190/190 Moyenne des 90 derniers jours 25 JUL 190
V. Indice géomagnetique A
OBSERVED AFR/AP 24 JUL 004/008 ESTIMATED AFR/AP 25 JUL 007/007 PREDICTED AFR/AP 26 JUL-28 JUL 012/020-010/015-020/025
VI. Probabilités d'activité géomagnétique du 26 JUL au 28 JUL
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 20% | 20% | 30% |
| Tempête mineure | 10% | 10% | 25% |
| Tempête majeure/sévère | 05% | 05% | 20% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 30% | 30% | 30% |
| Tempête mineure | 15% | 15% | 25% |
| Tempête majeure/sévère | 05% | 05% | 25% |
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