Affichage des archives de vendredi, 31 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 31 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 212 publié à 2200Z le 31 JUL 1998IA. Analyse des régions solaires actives et activité du 30-2100Z au 31-2100Z SOLAR ACTIVITY WAS LOW. THREE NOTABLE FLARES OCCURRED.
THE FIRST WAS A C1 PEAKING AT 31/0345Z AND WAS ASSOCIATED WITH
MODERATE INTENSITY TYPE II/IV SWEEP EVENTS. ALTHOUGH NO OPTICAL
FLARE REPORTS WERE RECEIVED, ENHANCED PLAGE OBSERVED IN REGION 8280
(S24W54) SHORTLY AFTER THIS FLARE MAY SUGGEST ITS ORIGIN. THE SECOND
FLARE OF NOTE WAS A LONG-DURATION C2/2F AT 31/0538Z IN REGION 8283
(N27E16). THIS FLARE WAS ASSOCIATED WITH A 12 DEGREE DSF AND STRONG
TYPE II SWEEP. THE THIRD FLARE WAS A B7 AT 31/1540Z ASSOCIATED WITH
FILAMENT ACTIVATION AND PARTIAL ERUPTION IN REGION 8282 (N30W48).
NEW REGIONS 8289 (N22W63), 8290 (N17E63), AND 8291 (S23E09) WERE
NUMBERED. REGION 8290 PRODUCED THE ONLY OTHER OPTICAL FLARE
REPORTED, A SF (NO X-RAY OUTPUT) AT 31/1605Z.
IB. Prévisions d'activité solaire
SOLAR ACTIVITY IS EXPECTED TO BE VERY
LOW TO LOW. FLARES ARE POSSIBLE IN REGIONS 8280, 8282, AND 8290.
REGION 8282 MAY PRODUCE AN ISOLATED M-CLASS FLARE BEFORE ITS DISK
DEPARTURE.
IIA. Résumé de l'activité géophysique du 30-2100Z au 31-2100Z
THE GEOMAGNETIC FIELD RANGED FROM QUIET TO STORM LEVELS. ACE RTSW
DATA SUGGESTS THAT THE EARTH'S MAGNETOSPHERE IS REACTING TO SEVERAL
HOURS OF SOLAR WIND CHARACTERIZED BY HIGH DENSITY (20-70 P/CC),
SLIGHTLY ENHANCED SPEED (420 KM/S), AND VARIABLE BZ (+/- 12 NT). THE
NATURE OF THIS STRUCTURE (TRANSIENT OR NOT) IS NOT CLEAR FROM THE
AVAILABLE DATA.
IIB. Prévision de l'activité géophysique
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE UNSETTLED TO ACTIVE FOR THE NEXT 24 HOURS, BECOMING
QUIET TO UNSETTLED BY THE END OF THE FORECAST PERIOD. THE SOLAR
EVENTS WHICH WERE OBSERVED TODAY (DSFS AND TYPE II/IV SWEEPS) MAY
INDICATE THE OCCURRENCE OF CMES WHICH COULD AFFECT ACTIVITY LEVELS
AT THE END, OR JUST OUTSIDE, OF THE 3-DAY FORECAST PERIOD.
III. Probabilité d'éruption solaire du 01 AUG au 03 AUG
| Classe M | 15% | 10% | 05% |
| Classe X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | GREEN | ||
IV. Flux Penticton 10.7 cm
Observé 31 JUL 114 Prévisionnel 01 AUG-03 AUG 112/110/108 Moyenne des 90 derniers jours 31 JUL 110
V. Indice géomagnetique A
OBSERVED AFR/AP 30 JUL 011/012 ESTIMATED AFR/AP 31 JUL 024/025 PREDICTED AFR/AP 01 AUG-03 AUG 015/015-010/012-010/015
VI. Probabilités d'activité géomagnétique du 01 AUG au 03 AUG
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 20% | 15% | 15% |
| Tempête mineure | 10% | 01% | 01% |
| Tempête majeure/sévère | 05% | 05% | 05% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 25% | 15% | 15% |
| Tempête mineure | 15% | 05% | 05% |
| Tempête majeure/sévère | 10% | 05% | 05% |
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
AR3654 1IMF - BT strength 5What are these long and thin eruptions? 6AR 3637, 3638, 3643 89Unproven theories 341
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 | 25/04/2024 | M1.3 |
| 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 | 135.5 +27.6 |