Affichage des archives de mercredi, 15 juillet 1998
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 1998 Jul 15 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 196 publié à 2200Z le 15 JUL 1998IA. Analyse des régions solaires actives et activité du 14-2100Z au 15-2100Z SOLAR ACTIVITY WAS LOW. THE LARGEST EVENT OF THE PERIOD
WAS A C6/SF WITH MINOR CENTIMETRIC RADIO BURSTS FROM REGION 8270
(S21W00). REGION 8270 ALSO PRODUCED SEVERAL SMALL C-CLASS FLARES.
SLIGHT DECAY OCCURRED IN THIS REGION BUT SMALL AREAS OF MAGNETIC
COMPLEXITY REMAINED. NEW REGION 8272 (S28E56) PRODUCED A C5/SF AT
15/1046Z. THIS REGION IS A SMALL CLASS B SUNSPOT GROUP. NEW REGION
8273 (S27E22) EMERGED AT A MODERATE PACE NEAR THE BASE OF AN
EXISTING FILAMENT.
IB. Prévisions d'activité solaire
SOLAR ACTIVITY SHOULD REMAIN
PREDOMINANTLY LOW WITH REGIONS 8270 AND 8273 PRODUCING OCCASIONAL
C-CLASS FLARES. REGION 8270 RETAINS THE CAPABILITY OF PRODUCING AN
ISOLATED M-CLASS EVENT BUT THAT POSSIBILITY IS DECREASING AS THE
REGION DECAYS. PAST STATISTICAL STUDIES INDICATE THE PRE-EXISTING
FILAMENT NEAR EMERGING REGION 8273 COULD ERUPT IN THE NEAR FUTURE.
IF ERUPTION OCCURS, IT IS NOT LIKELY THAT A LARGE SPOTLESS FLARE
WOULD OCCUR SINCE THE MAGNETIC FIELD STRENGTHS AROUND THE FILAMENT
ARE LOW.
IIA. Résumé de l'activité géophysique du 14-2100Z au 15-2100Z
THE GEOMAGNETIC FIELD WAS QUIET.
IIB. Prévision de l'activité géophysique
THE GEOMAGNETIC FIELD SHOULD
BECOME QUIET TO UNSETTLED FOR 16-17 JUL. ISOLATED PERIODS OF ACTIVE
CONDITIONS ARE POSSIBLE DURING THAT PERIOD AS A RESULT OF THE M4/1B
FLARE ON 14 JUL. PREDOMINANTLY QUIET LEVELS ARE EXPECTED TO RETURN
ON 18 JUL.
III. Probabilité d'éruption solaire du 16 JUL au 18 JUL
| Classe M | 30% | 30% | 30% |
| Classe X | 05% | 05% | 05% |
| Proton | 05% | 05% | 05% |
| PCAF | GREEN | ||
IV. Flux Penticton 10.7 cm
Observé 15 JUL 105 Prévisionnel 16 JUL-18 JUL 107/108/109 Moyenne des 90 derniers jours 15 JUL 107
V. Indice géomagnetique A
OBSERVED AFR/AP 14 JUL 002/004 ESTIMATED AFR/AP 15 JUL 002/006 PREDICTED AFR/AP 16 JUL-18 JUL 010/013-012/010-008/008
VI. Probabilités d'activité géomagnétique du 16 JUL au 18 JUL
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 30% | 30% | 10% |
| Tempête mineure | 15% | 15% | 05% |
| Tempête majeure/sévère | 05% | 05% | 01% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 30% | 30% | 10% |
| Tempête mineure | 15% | 15% | 05% |
| Tempête majeure/sévère | 05% | 05% | 01% |
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