Affichage des archives de vendredi, 25 septembre 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 Sep 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 268 publié à 2200Z le 25 SEP 1998IA. Analyse des régions solaires actives et activité du 24-2100Z au 25-2100Z SOLAR ACTIVITY WAS LOW. ONLY 2 C-CLASS X-RAY FLARES
WERE OBSERVED DURING THE PERIOD. NOTABLE ACTIVE REGIONS WERE 8336
(S27W67), 8340 (N20W27) AND 8244 (S18W16), ALL OF WHICH PRODUCED
OPTICAL SUB-FLARES. PERHAPS THE MOST DYNAMIC REGION WAS REGION 8346
(S30E27) WHICH PRODUCED A B7/SF AND WAS SHOWING PLAGE FLUCTUATIONS
AS WELL AS POINT BRIGHTENINGS OF NEAR FAINT FLARE INTENSITY FOR MOST
OF THE PERIOD. THE REST OF THE DISK AND LIMB WAS STABLE AND MOSTLY
QUIET.
IB. Prévisions d'activité solaire
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE. REGIONS 8340, 8344 AND 8346 CAN BE EXPECTED TO PRODUCE
C-CLASS FLARES. IT IS ALSO POSSIBLE THAT THESE REGIONS COULD PRODUCE
AN ISOLATE M-CLASS EVENT.
IIA. Résumé de l'activité géophysique du 24-2100Z au 25-2100Z
GEOMAGNETIC ACTIVITY WAS UNSETTLED TO SEVERE STORM LEVELS AT BOTH
MIDDLE AND HIGH LATITUDES. A GREATER THAN 10 PFU PROTON EVENT WAS
OBSERVED AT GEOSYNCHRONOUS ORBIT BETWEEN 25/0010UT AND 25/0230UT.
THE MAXIMUM OF 44 PFU WAS OBSERVED AT 25/0130UT. THE GREATER THAN
2MEV ELECTRONS AT GEOSYNCHRONOUS ORBIT REACHED THRESHOLD LEVELS AT
1605UT. THEY REACHED A PEAK AT AROUND 25/1830UT AND HAVE SINCE
DECLINED TO NEAR THRESHOLD LEVELS AT THE END OF THE PERIOD.
IIB. Prévision de l'activité géophysique
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE UNSETTLED TO MINOR STORM LEVELS. THIS WOULD BE
ATTRIBUTED TO THE CONTINUATION OF THE GEOMAGNETIC ACTIVITY OF 25
SEPTEMBER. THE GREATER THAN 2MEV ELECTRONS CAN BE EXPECTED TO
CONTINUE TO DECLINE.
III. Probabilité d'éruption solaire du 26 SEP au 28 SEP
| Classe M | 40% | 40% | 40% |
| Classe X | 10% | 10% | 10% |
| Proton | 05% | 05% | 05% |
| PCAF | YELLOW | ||
IV. Flux Penticton 10.7 cm
Observé 25 SEP 139 Prévisionnel 26 SEP-28 SEP 140/140/140 Moyenne des 90 derniers jours 25 SEP 129
V. Indice géomagnetique A
OBSERVED AFR/AP 24 SEP 017/028 ESTIMATED AFR/AP 25 SEP 090/140 PREDICTED AFR/AP 26 SEP-28 SEP 040/050-025/025-015/015
VI. Probabilités d'activité géomagnétique du 26 SEP au 28 SEP
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 50% | 30% | 25% |
| Tempête mineure | 30% | 10% | 10% |
| Tempête majeure/sévère | 05% | 05% | 05% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 60% | 50% | 40% |
| Tempête mineure | 30% | 20% | 15% |
| Tempête majeure/sévère | 05% | 05% | 01% |
Dernières nouvelles
lundi, 22 avril 2024
Lot's of sunspots! Big chance for major flare activity?
samedi, 23 mars 2024
X1.1 solar flare with earth-directed CME
mercredi, 20 mars 2024
Sunspot region 3615, G1 watch
Forum
AR 3637, 3638, 3643 87Unproven theories 341Space Weather Memes 338Filaments and prominences 55Growth of Cycle 25 433
Plus de messages du forumAidez SpaceWeatherLive.com !
Vous êtes de plus en plus nombreux à consulter SpaceWeatherLive pour suivre l'activité solaire ou aurorale, et avec le traffic les coûts du serveur augmentent. Si vous appréciez SpaceWeatherLive, soutenez notre projet en faisant un don afin que nous puissions continuer à vous informer !
La Météo Spatiale en faits
| Dernière classe X | 28/03/2024 | X1.1 |
| Dernière classe M | 24/04/2024 | M2.0 |
| Dernier orage géomagnétique | 19/04/2024 | Kp7 (G3) |
| Jours sans taches solaires | |
|---|---|
| Dernier jour sans taches solaires | 08/06/2022 |
| Nombre mensuel moyen de taches solaires | |
|---|---|
| mars 2024 | 104.9 -19.8 |
| Last 30 days | 133.9 +26.6 |