Viendo archivo del miércoles, 17 abril 2002
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 2002 Apr 17 2200 UTCPreparado por NOAA © SWPC y procesado por SpaceWeatherLive.com
Informe conjunto USAF/NOAA de actividad Solar y Geofísica
SDF Número 107 Publicado el 2200Z a las 17 Apr 2002IA. Análisis de regiones solares activas y de actividad desde 16-2100Z hasta 17-2100Z Solar activity was moderate. Region 9906 (S14W41)
produced a long-duration M2/2n flare at 17/0824 UTC. This flare was
associated with a 3000 sfu radio burst at 2695 MHz, Type II/IV radio
sweeps, and an Earth-directed "halo" CME visible in LASCO images.
The region appears to have retained its size and complexity
following the flare. Eruptive limb activity (EPL, BSL, and flare) in
the vicinity of Region 9905 (S15W90) occurred during and after the
LDE event in 9906.
IB. Pronóstico de la actividad solar
Solar activity is expected to be
moderate. Additional M-class flares, possibly including a major
flare, are expected in Region 9906.
IIA. Resumen de la actividad geofísica 16-2100Z a 17-2100Z
The geomagnetic field ranged from quiet to major storm levels. A
shock was observed at the NASA ACE spacecraft at 17/1022 UTC and was
followed by an SI at ground magnetometers at 17/1109 UTC (57 nT at
Boulder). This shock is believed to be associated with the LDE
M1/CME which occurred on 15 April. A greater than 10 MeV proton
event began at 17/1530 UTC. The maximum flux observed so far was 24
pfu at 17/1540 UTC. This event is believed to be associated with the
LDE M2 discussed in Part IA.
IIB. Pronóstico de la actividad geofísica
The geomagnetic field is
expected to be at active to minor storm levels as the current
disturbance recovers over the next 24 hours. Another disturbance at
minor to major storm levels is expected to begin on 19 April in
response to the LDE M2/CME which occurred on 17 April. The greater
than 10 MeV proton event currently in progress is expected to end
within the next 24 hours.
III. Probabilidades del evento 18 Apr a 20 Apr
| Clase M | 75% | 60% | 50% |
| Clase X | 10% | 10% | 05% |
| Protón | 10% | 10% | 05% |
| PCAF | yellow | ||
IV. Penticton 10.7cm flujo
Observado 17 Apr 194 Previsto 18 Apr-20 Apr 190/185/180 Media de 90 Días 17 Apr 201
V. Índices Geomagnéticos A
Observado Afr/Ap 16 Apr 005/010 Estimado Afr/Ap 17 Apr 035/055 Previsto Afr/Ap 18 Apr-20 Apr 020/020-040/040-020/030
VI. Probabilidades de Actividad Geomagnética 18 Apr a 20 Apr
| A. Latitudes Medias | |||
|---|---|---|---|
| Activo | 50% | 50% | 50% |
| Tormenta Menor | 20% | 30% | 20% |
| Tormenta Mayor-Severa | 10% | 20% | 10% |
| B. Latitudes Altas | |||
|---|---|---|---|
| Activo | 60% | 20% | 60% |
| Tormenta Menor | 25% | 50% | 25% |
| Tormenta Mayor-Severa | 15% | 30% | 15% |
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