Viendo archivo del jueves, 28 abril 2011
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 2011 Apr 28 2200 UTCPreparado por NOAA © SWPC y procesado por SpaceWeatherLive.com
Informe conjunto USAF/NOAA de actividad Solar y Geofísica
SDF Número 118 Publicado el 2200Z a las 28 Apr 2011IA. Análisis de regiones solares activas y de actividad desde 27-2100Z hasta 28-2100Z Solar activity has been at low levels for the past 24
hours. Several C-class events were observed throughout the period,
the largest being a C2 flare at 28/1203Z from Region 1199 (N18W48).
Region 1196 (S23W32) regained sunspots and also produced a lower
level C-class event. Regions 1202 (N15W38) and 1203 (N19E77) were
numbered today. Region 1202 emerged as a simple beta group, while
Region 1203 rotated onto the east limb as an alpha group.
IB. Pronóstico de la actividad solar
Solar activity is expected to be at
low levels for the next three days (29 April - 01 May). There also
remains a slight chance for M-class events with Region 1203 rotating
onto the disk and Region 1195 and 1199 continuing to grow and
evolve.
IIA. Resumen de la actividad geofísica 27-2100Z a 28-2100Z
The geomagnetic field has been at quiet levels for the past 24 hours.
Measurements by the ACE spacecraft show a solar sector boundary
crossing occurred at 28/1445Z. Solar wind speed increased from
around 320 - 360 km/s, behind a 12 hour bump in density. The Phi
angle also rotated from a positive influence to a negative.
IIB. Pronóstico de la actividad geofísica
The geomagnetic field is
expected to remain at mostly quiet levels for day 1 (29 April) of
the forecast period. On days 2 and 3 (30 April - 01 May), unsettled
to active levels with isolated periods of minor storming are
expected, due to the arrival of a coronal hole high-speed stream.
III. Probabilidades del evento 29 Apr a 01 May
| Clase M | 05% | 05% | 05% |
| Clase X | 01% | 01% | 01% |
| Protón | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7cm flujo
Observado 28 Apr 110 Previsto 29 Apr-01 May 110/110/105 Media de 90 Días 28 Apr 107
V. Índices Geomagnéticos A
Observado Afr/Ap 27 Apr 000/003 Estimado Afr/Ap 28 Apr 001/003 Previsto Afr/Ap 29 Apr-01 May 005/005-010/010-012/012
VI. Probabilidades de Actividad Geomagnética 29 Apr a 01 May
| A. Latitudes Medias | |||
|---|---|---|---|
| Activo | 10% | 35% | 40% |
| Tormenta Menor | 01% | 05% | 10% |
| Tormenta Mayor-Severa | 01% | 01% | 01% |
| B. Latitudes Altas | |||
|---|---|---|---|
| Activo | 10% | 35% | 40% |
| Tormenta Menor | 01% | 05% | 15% |
| Tormenta Mayor-Severa | 01% | 01% | 01% |
All times in UTC
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