Viendo archivo del domingo, 15 abril 2001
Informe actividad solar
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.
Informe de actividad Solar-Geofísica 2001 Apr 15 2200 UTCPreparado por NOAA © SWPC y procesado por SpaceWeatherLive.com
Informe conjunto USAF/NOAA de actividad Solar y Geofísica
SDF Número 105 Publicado el 2200Z a las 15 Apr 2001IA. Análisis de regiones solares activas y de actividad desde 14-2100Z hasta 15-2100Z Solar activity was high. Region 9415 (S12W87) produced
an X14/2b flare at 15/1350 UTC. This event had an associated Type
II, with a speed of 1000 km/s, and Type IV radio sweeps. It was
also accompanied by a tenflare of 48000 sfu. A 12 degree filament
located at S23W02 disappeared between 14/2054 UTC and 15/1135 UTC.
IB. Pronóstico de la actividad solar
Solar activity is expected to be low
to moderate. Region 9415 is still capable of producing a major
flare before it rotates over the western limb.
IIA. Resumen de la actividad geofísica 14-2100Z a 15-2100Z
The geomagnetic field was unsettled to active. The X-class event
described in Part IA produced proton events at greater than 10 and
100 MeV flux at geosynchronous orbit which are still in progress.
The greater than 100 MeV crossed event threshold at 15/1405 UTC, and
so far have reached a peak flux of 146 pfu at 15/1525 UTC. The
greater than 10 MeV crossed event threshold at 15/1410 UTC and has
reached a peak flux of 951 pfu at 15/1920 UTC. A ground level event
was measured on the Thule riometer at 15/1505 UTC, and a polar cap
absorption (PCA) event began at 15/1950 UTC.
IIB. Pronóstico de la actividad geofísica
The geomagnetic field is
expected to be quiet to active for April 16 and 17. Active to minor
storm conditions are expected on April 18 as a result of the X14
mentioned in Part IA above. Effects from a high speed coronal
stream may also be expected on April 18. The greater than 10 MeV
proton event is expected to continue for most of the period, and the
greater than 100 MeV proton event is expected to go below threshold
by sometime on April 16.
III. Probabilidades del evento 16 Apr a 18 Apr
| Clase M | 80% | 70% | 60% |
| Clase X | 25% | 10% | 10% |
| Protón | 90% | 10% | 10% |
| PCAF | in progress | ||
IV. Penticton 10.7cm flujo
Observado 15 Apr 134 Previsto 16 Apr-18 Apr 145/150/160 Media de 90 Días 15 Apr 166
V. Índices Geomagnéticos A
Observado Afr/Ap 14 Apr 013/015 Estimado Afr/Ap 15 Apr 015/015 Previsto Afr/Ap 16 Apr-18 Apr 015/015-015/020-020/035
VI. Probabilidades de Actividad Geomagnética 16 Apr a 18 Apr
| A. Latitudes Medias | |||
|---|---|---|---|
| Activo | 25% | 25% | 50% |
| Tormenta Menor | 05% | 05% | 10% |
| Tormenta Mayor-Severa | 01% | 01% | 05% |
| B. Latitudes Altas | |||
|---|---|---|---|
| Activo | 30% | 35% | 60% |
| Tormenta Menor | 10% | 10% | 15% |
| Tormenta Mayor-Severa | 05% | 05% | 10% |
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