Affichage des archives de mercredi, 23 juin 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 Jun 23 2200 UTCFait par le NOAA © SWPC et adapté par SpaceWeatherLive.com
Rapport de l'USAF/NOAA sur l'activité solaire et géophysique
SDF numéro 174 publié à 2200Z le 23 JUN 1999IA. Analyse des régions solaires actives et activité du 22-2100Z au 23-2100Z SOLAR ACTIVITY WAS MODERATE. THE LARGEST EVENT WAS AN
M1/2N FLARE AT 23/0709Z FROM REGION 8598 (N23E43). THIS FLARE WAS
ACCOMPANIED BY A TYPE IV RADIO SWEEP AS WELL AS MULTI-FREQUENCY
RADIO BURSTS. AT 23/0047Z A C7/1F FLARE OCCURRED, ORIGINATING FROM
UNSPOTTED REGION 8583 (S11W90). THROUGHOUT THE PERIOD BACKGROUND
X-RAY FLUX LEVELS HOVERED AT OR NEAR C LEVELS WITH FREQUENT SMALL
C-CLASS EVENTS. REGION 8598, WHICH LIES WITHIN A LARGE CLUSTER OF
REGIONS IN THE NORTHEAST QUADRANT OF THE DISK, IS THE LARGEST AND
MOST MAGNETICALLY COMPLICATED SPOT GROUP ON THE DISK. REGIONS 8601
(S15W36), 8602 (N19E75), 8603 (S16E75) WERE NUMBERED TODAY.
IB. Prévisions d'activité solaire
SOLAR ACTIVITY IS EXPECTED TO BE LOW
TO MODERATE. GROWTH AND MAGNETIC INTERACTION WITHIN THE LARGE
NORTHEAST CLUSTER OF REGIONS INCREASES THE CHANCES OF M-CLASS FLARES
OVER THE NEXT SEVERAL DAYS.
IIA. Résumé de l'activité géophysique du 22-2100Z au 23-2100Z
THE GEOMAGNETIC FIELD WAS QUIET THROUGHOUT THE PERIOD. RECENT
ANALYSIS OF SOHO IMAGERY INDICATED THE PRESENCE OF A HALO CME
ASSOCIATED WITH THE M1/1N FLARE ON 22/1829Z AND THE POSSIBILITY OF
ANOTHER GEOEFFECTIVE CME WITH TODAY'S M1 FLARE.
IIB. Prévision de l'activité géophysique
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE QUIET ON THE FIRST DAY OF THE FORECAST PERIOD. BY
THE SECOND AND THIRD DAYS THE EFFECT OF THE OBSERVED CMES ARE
FORECAST TO INCREASE THE FIELD TO UNSETTLED TO ACTIVE CONDITIONS
WITH A CHANCE FOR MINOR STORMING.
III. Probabilité d'éruption solaire du 24 JUN au 26 JUN
| Classe M | 60% | 60% | 60% |
| Classe X | 05% | 05% | 05% |
| Proton | 20% | 20% | 20% |
| PCAF | GREEN | ||
IV. Flux Penticton 10.7 cm
Observé 23 JUN 168 Prévisionnel 24 JUN-26 JUN 175/180/180 Moyenne des 90 derniers jours 23 JUN 138
V. Indice géomagnetique A
OBSERVED AFR/AP 22 JUN 003/004 ESTIMATED AFR/AP 23 JUN 005/005 PREDICTED AFR/AP 24 JUN-26 JUN 005/005-015/015-015/015
VI. Probabilités d'activité géomagnétique du 24 JUN au 26 JUN
| A. Latitudes moyennes | |||
|---|---|---|---|
| Actif | 10% | 35% | 35% |
| Tempête mineure | 05% | 15% | 15% |
| Tempête majeure/sévère | 01% | 01% | 01% |
| B. Hautes latitudes | |||
|---|---|---|---|
| Actif | 15% | 40% | 40% |
| Tempête mineure | 05% | 20% | 20% |
| Tempête majeure/sévère | 01% | 01% | 01% |
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