Affichage des archives de mercredi, 13 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 13 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 013 publié à 2200Z le 13 JAN 1999IA. Analyse des régions solaires actives et activité du 12-2100Z au 13-2100Z SOLAR ACTIVITY HAS BEEN LOW FOR THE PAST 24 HOURS. NINE
C-CLASS EVENTS OCCURRED PRIMARILY ASSOCIATED WITH REGIONS 8439
(S24E66) AND NEW REGION 8440 (N21E71). THESE REGIONS APPEAR TO BE
FLARING SYMPATHETICALLY. A BRIGHT SURGE OUT TO 0.19R FROM N23E90
(BEHIND REGION 8440) WAS REPORTED BETWEEN 1914-1936 UT. ADDITIONAL
SURGING ON THE EAST LIMB NEAR N20 MAY BE SIGNALING THE RETURN OF ANY
OF SEVERAL REGIONS EXPECTED OVER THE NEXT 3 DAYS. THE REMAINDER OF
THE LIMBS AND DISK WERE QUIET.
IB. Prévisions d'activité solaire
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE BASED ON THE FLARE POTENTIAL IN REGIONS 8439 AND 8440,
AND THE LIKLIHOOD OF THE RETURN OF ACTIVE REGIONS OVER THE NORTHEAST
LIMB OF THE SUN.
IIA. Résumé de l'activité géophysique du 12-2100Z au 13-2100Z
GEOMAGNETIC ACTIVITY HAS BEEN AT QUIET TO MINOR STORM LEVELS FOR THE
PAST 24 HOURS. ACTIVITY INCREASED AFTER A SUDDEN IMPULSE AT 1055 UT.
SOLAR WIND DATA FROM THE ACE SPACECRAFT SHOWED THE PASSAGE OF A
SHOCK AT 0959 UT THAT WAS FOLLOWED BY ENHANCED, SOUTHWARD
INTERPLANETARY MAGNETIC FIELDS (-20 NT). THIS DISTURBANCE MAY HAVE
ORIGINATED ON 9 JANUARY IN ASSOCIATION WITH A FILAMENT DISAPPEARANCE
IN THE NORTH CENTER OF THE SUN AND/OR A LONG-DURATION C1 X-RAY
EVENT. THE GREATER THAN 2 MEV ELECTRON FLUX LEVELS AT GEOSYNCHRONOUS
ORBIT, WHICH ATTAINED HIGH LEVELS ON 12 JANUARY, FELL BELOW EVENT
THRESHOLD AT 12/1835 UT.
IIB. Prévision de l'activité géophysique
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE PRIMARILY UNSETTLED TO ACTIVE FOR THE NEXT THREE DAYS
WITH THE POSSIBILITY OF OCCASIONAL MINOR STORM CONDITIONS TOMORROW
AS TODAY'S TRANSIENT SOLAR WIND EVENT COMPLETES ITS PASSAGE BEYOND
EARTH.
III. Probabilité d'éruption solaire du 14 JAN au 16 JAN
| Classe M | 30% | 30% | 30% |
| Classe X | 10% | 10% | 10% |
| Proton | 01% | 01% | 05% |
| PCAF | GREEN | ||
IV. Flux Penticton 10.7 cm
Observé 13 JAN 119 Prévisionnel 14 JAN-16 JAN 130/140/150 Moyenne des 90 derniers jours 13 JAN 138
V. Indice géomagnetique A
OBSERVED AFR/AP 12 JAN 003/006 ESTIMATED AFR/AP 13 JAN 015/020 PREDICTED AFR/AP 14 JAN-16 JAN 015/015-010/012-010/009
VI. Probabilités d'activité géomagnétique du 14 JAN au 16 JAN
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 30% | 20% | 10% |
| Tempête mineure | 10% | 05% | 01% |
| Tempête majeure/sévère | 05% | 01% | 01% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 30% | 20% | 10% |
| Tempête mineure | 20% | 10% | 05% |
| Tempête majeure/sévère | 05% | 05% | 01% |
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