Affichage des archives de lundi, 25 janvier 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 Jan 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 025 publié à 2200Z le 25 JAN 1999IA. Analyse des régions solaires actives et activité du 24-2100Z au 25-2100Z SOLAR ACTIVITY BECAME MODERATE. REGION 8444 (N20W51)
PRODUCED AN IMPULSIVE M2/SN AT 25/0056Z WITH MODERATE RADIO BURSTS
IN THE 245-606 MHZ RANGE. THIS EVENT WAS PRECEDED BY A LONG DURATION
C3/SF AT 25/0012Z FROM REGION 8444. THIS EVENT PRODUCED A MODERATE
INTENSITY TYPE II RADIO BURST. REGION 8444 ALSO PRODUCED A C8/SF AT
25/1407Z. THIS REGION EXHIBITED SLIGHT GROWTH DURING THE PERIOD. ITS
FLARE PRODUCTION RATE BELIES ITS SMALL SIZE AND RELATIVE STABILITY
IN WHITE LIGHT. IT IS LIKELY THERE ARE MIXED POLARITIES IN THIS
REGION BUT THE LACK OF MAGNETOGRAPH DATA PREVENTED VERIFICATION.
REGIONS 8439 (S23W93) AND 8440 (N19W87) MAY HAVE PRODUCED SEVERAL
SMALL X-RAY ENHANCEMENTS.
IB. Prévisions d'activité solaire
SOLAR ACTIVITY IS EXPECTED TO BE
PREDOMINANTLY LOW. REGION 8444 IS OBVIOUSLY CAPABLE OF GENERATING
OCCASIONAL SMALL M-CLASS EVENTS. HOWEVER, ANY SIMPLIFICATION IN THIS
SMALL REGION COULD RESULT IN THE CESSATION OF FLARE PRODUCTION.
REGIONS 8439 AND 8440 REMAIN CAPABLE OF PRODUCING OCCASIONAL M-CLASS
FLARES. THIS IS A PERSISTENCE FORECAST DUE TO THE FORESHORTENING OF
THESE REGIONS.
IIA. Résumé de l'activité géophysique du 24-2100Z au 25-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED. SOLAR WIND VELOCITIES
DECREASED DURING THE PERIOD. THE GT 10 MEV PROTON ENHANCEMENT
CONTINUED SLIGHTLY ABOVE BACKGROUND. THE FORBUSH DECREASE THAT BEGAN
ON 23 JAN CONTINUED TO SLOWLY RECOVER.
IIB. Prévision de l'activité géophysique
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET TO UNSETTLED FOR THE NEXT THREE DAYS. BRIEF
PERIODS OF ACTIVE CONDITIONS ARE POSSIBLE TOWARD THE END OF THE
PERIOD IN RESPONSE TO A THIN TRANSEQUATORIAL CORONAL HOLE THAT
PASSED CENTRAL MERIDIAN ON 24 JAN.
III. Probabilité d'éruption solaire du 26 JAN au 28 JAN
| Classe M | 45% | 30% | 20% |
| Classe X | 10% | 05% | 05% |
| Proton | 10% | 05% | 05% |
| PCAF | GREEN | ||
IV. Flux Penticton 10.7 cm
Observé 25 JAN 138 Prévisionnel 26 JAN-28 JAN 125/120/118 Moyenne des 90 derniers jours 25 JAN 144
V. Indice géomagnetique A
OBSERVED AFR/AP 24 JAN 011/013 ESTIMATED AFR/AP 25 JAN 009/010 PREDICTED AFR/AP 26 JAN-28 JAN 008/010-010/010-010/008
VI. Probabilités d'activité géomagnétique du 26 JAN au 28 JAN
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 10% | 15% | 15% |
| Tempête mineure | 05% | 05% | 05% |
| Tempête majeure/sévère | 01% | 01% | 01% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 10% | 15% | 15% |
| Tempête mineure | 05% | 05% | 05% |
| Tempête majeure/sévère | 01% | 01% | 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
What are these long and thin eruptions? 1AR 3637, 3638, 3643 89Unproven theories 341Space Weather Memes 338Filaments and prominences 55
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 | M1.0 |
| 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 |