Affichage des archives de jeudi, 28 août 1997
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 1997 Aug 28 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
******************************** CORRECTED COPY ************************************************ SDF numéro 240 publié à 2200Z le 28 AUG 1997IA. Analyse des régions solaires actives et activité du 27-2100Z au 28-2100Z SOLAR ACTIVITY WAS VERY LOW. A SERIES OF B-CLASS
EVENTS, THE LARGEST OF WHICH WAS A B9.3, WERE REPORTED. NONE WERE
CORRELATED WITH OPTICAL FLARES. REGION 8076 (N29E24) CONTINUED ITS
GROWTH AND IS NOW A DSI SPOT GROUP IN A BETA-GAMMA CONFIGURATION.
NEW REGION 8079 (N15E10) WAS NUMBERED TODAY. THIS REGION IS
APPROXIMATELY 9 DEGREES SOUTHWEST OF REGION 8078 (N16E12) AND
APPEARS TO BE CONNECTED. HOWEVER, SPACE-BASED X-RAY IMAGES AND
MAGNETIC ANALYSIS INDICATE A TRAILER POLARITY AREA WITHOUT SPOTS
INTERCEDES BETWEEN THE TWO REGIONS, THUS LENDING CREDENCE TO THEIR
SEPARATION.
IB. Prévisions d'activité solaire
SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW TO LOW. REGION 8076 HAS A GOOD CHANCE OF PRODUCING ADDITIONAL
C-CLASS EVENTS AND AN OUTSIDE CHANCE OF PRODUCING AN ISOLATED
M-CLASS EVENT.
IIA. Résumé de l'activité géophysique du 27-2100Z au 28-2100Z
THE GOEMAGNETIC FIELD RANGED FROM QUIET TO MINOR STORMING AT ALL
LATITUDES. ACTIVE TO MINOR STORM LEVELS WERE OBSERVED BETWEEN
28/0300 AND 28/0900Z. THIS DISTURBANCE MAY HAVE BEEN THE RESULT OF A
MODERATELY WELL-PLACE NORTHERN CORONAL HOLE EXTENSION. SPACE-BASED
INSTRUMENTS INDICATE EARTH WAS IN A HIGH SPEED, LOW DENSITY CORONAL
HOLE STREAM AT THE TIME OF THE DISTURBANCE.
IIB. Prévision de l'activité géophysique
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED FOR THE ENTIRE FORECAST PERIOD.
III. Probabilité d'éruption solaire du 29 AUG au 31 AUG
| Classe M | 05% | 05% | 05% |
| Classe X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Flux Penticton 10.7 cm
Observé 28 AUG 091 Prévisionnel 29 AUG-31 AUG 092/092/092 Moyenne des 90 derniers jours 28 AUG 073
V. Indice géomagnetique A
OBSERVED AFR/AP 27 AUG 004/005 ESTIMATED AFR/AP 28 AUG 014/014 PREDICTED AFR/AP 29 AUG-31 AUG 010/005-010/008-005/008
VI. Probabilités d'activité géomagnétique du 29 AUG au 31 AUG
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 15% | 15% | 10% |
| Tempête mineure | 01% | 05% | 05% |
| Tempête majeure/sévère | 01% | 01% | 01% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 15% | 15% | 15% |
| Tempête mineure | 05% | 05% | 05% |
| Tempête majeure/sévère | 01% | 01% | 01% |
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