Affichage des archives de dimanche, 12 septembre 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 Sep 12 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 255 publié à 2200Z le 12 SEP 1999IA. Analyse des régions solaires actives et activité du 11-2100Z au 12-2100Z SOLAR ACTIVITY INCREASED, BUT REMAINED IN THE LOW
CATEGORY. REGION 8699 (N21E15) GREW RAPIDLY DURING THE PERIOD AND
PRODUCED NUMEROUS SUBFLARES, A FEW OF WHICH REACHED C-CLASS. THIS
REGION DISPLAYED A MODERATELY COMPLEX MAGNETIC STRUCTURE, POSSIBLY
INCLUDING A DELTA MAGNETIC CONFIGURATION. REGION 8692 (S26E11)
SHOWED SOME POLARITY MIXING, BUT WAS STABLE MUCH OF THE PERIOD. IT
PRODUCED A SUBFLARE LATE IN THE DAY. A 20-DEGREE FILAMENT, LAST SEEN
CENTERED AT S20W31, ERUPTED EARLY IN THE PERIOD. A CORONAL MASS
EJECTION FOLLOWED THE ERUPTION, BUT DID NOT APPEAR TO BE
EARTH-DIRECTED. NEW REGION 8700 (N12E81) WAS NUMBERED.
IB. Prévisions d'activité solaire
SOLAR ACTIVITY IS EXPECTED TO BE AT
LOW TO MODERATE LEVELS. REGION 8699 MAY PRODUCE M-CLASS FLARES,
PARTICULARLY IF ITS PRESENT RATE OF GROWTH CONTINUES. THERE IS ALSO
A SLIGHT CHANCE FOR A MAJOR FLARE FROM THIS REGION.
IIA. Résumé de l'activité géophysique du 11-2100Z au 12-2100Z
GEOMAGNETIC FIELD ACTIVITY INCREASED TO QUIET TO MINOR STORM LEVELS
WITH BRIEF MAJOR STORM PERIODS DETECTED AT HIGH LATITUDES. THE ACE
SPACECRAFT DETECTED AN INTERPLANETARY SHOCK PASSAGE AT L1 AT
12/0322Z FOLLOWED BY A SUDDEN IMPULSE AT EARTH AT 12/0400Z (21 NT,
AS MEASURED BY THE BOULDER USGS MAGNETOMETER). THIS ACTIVITY IS
LIKELY DUE TO A RECURRENT HIGH-SPEED CORONAL HOLE WIND STREAM.
IIB. Prévision de l'activité géophysique
GEOMAGNETIC FIELD ACTIVITY IS
EXPECTED TO RANGE FROM UNSETTLED TO MINOR STORM LEVELS THROUGH THE
PERIOD AS CORONAL HOLE EFFECTS CONTINUE. THE GREATER THAN 2 MEV
ELECTRON FLUX, CURRENTLY AT NORMAL LEVELS, IS EXPECTED TO INCREASE
TO HIGH LEVELS DURING THE PERIOD.
III. Probabilité d'éruption solaire du 13 SEP au 15 SEP
| Classe M | 40% | 40% | 40% |
| Classe X | 10% | 10% | 10% |
| Proton | 10% | 10% | 10% |
| PCAF | GREEN | ||
IV. Flux Penticton 10.7 cm
Observé 12 SEP 141 Prévisionnel 13 SEP-15 SEP 150/155/160 Moyenne des 90 derniers jours 12 SEP 164
V. Indice géomagnetique A
OBSERVED AFR/AP 11 SEP 008/010 ESTIMATED AFR/AP 12 SEP 018/015 PREDICTED AFR/AP 13 SEP-15 SEP 018/013-018/015-018/015
VI. Probabilités d'activité géomagnétique du 13 SEP au 15 SEP
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 40% | 40% | 40% |
| Tempête mineure | 15% | 15% | 15% |
| Tempête majeure/sévère | 05% | 05% | 05% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 45% | 45% | 45% |
| Tempête mineure | 20% | 20% | 20% |
| Tempête majeure/sévère | 06% | 06% | 06% |
Dernières nouvelles
samedi, 4 mai 2024
Sunspot region 3663, X1 solar flare
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
Forum
AR3663 162Filaments and prominences 71AR3664 19Unproven theories 383Weakening of Earths magnetic field due to geomagnetic excursion 10
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 | 05/05/2024 | X1.2 |
| Dernière classe M | 05/05/2024 | M2.2 |
| Dernier orage géomagnétique | 02/05/2024 | Kp7- (G3) |
| Jours sans taches solaires | |
|---|---|
| Dernier jour sans taches solaires | 08/06/2022 |
| Nombre mensuel moyen de taches solaires | |
|---|---|
| avril 2024 | 136.5 +31.6 |
| Last 30 days | 153.8 +59.7 |