Viendo archivo del miércoles, 20 abril 2005
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 2005 Apr 20 2210 UTC# Prepared jointly by the U.S. Dept. of Commerce, NOAA, #Space Environment Center and the U.S. Air Force. #
Informe conjunto USAF/NOAA de actividad Solar y Geofísica
SDF Número 110 Publicado el 2200Z a las 20 Apr 2005IA. Análisis de regiones solares activas y de actividad desde 19-2100Z hasta 20-2100Z Solar activity was very low. Region 755 (S12E37)
produced a B 8 flare at 19/2217 UTC with an associated Type II radio
sweep (estimated speed of 1128 km/s) and a CME with an estimated
speed of 776 km/s. The CME was directed to the east and is not
expected to be geoeffective. No new regions were numbered today.
IB. Pronóstico de la actividad solar
Solar activity is expected to be very
low with a slight chance for an isolated C-flare.
IIA. Resumen de la actividad geofísica 19-2100Z a 20-2100Z
The geomagnetic field was at quiet to minor storm levels. Heightened
activity was due to a solar sector boundary followed by the onset of
a coronal hole high speed stream. Solar wind speed at ACE increased
from approximately 350 km/s to 600 km/s. By the end of the period,
solar wind speed had decreased to approximately 450 km/s.
IIB. Pronóstico de la actividad geofísica
The geomagnetic field is
expected to be quiet to unsettled with isolated active conditions
possible on 21 April. On 22 April, conditions are expected to
increase to unsettled to active with minor storm periods possible as
another coronal hole high speed stream is expected to become
geoeffective. On 23 April, unsettled to active conditions are
expected.
III. Probabilidades del evento 21 Apr a 23 Apr
| Clase M | 01% | 01% | 01% |
| Clase X | 01% | 01% | 01% |
| Protón | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7cm flujo
Observado 20 Apr 077 Previsto 21 Apr-23 Apr 080/080/080 Media de 90 Días 20 Apr 091
V. Índices Geomagnéticos A
Observado Afr/Ap 19 Apr 006/008 Estimado Afr/Ap 20 Apr 015/020 Previsto Afr/Ap 21 Apr-23 Apr 010/015-015/018-012/015
VI. Probabilidades de Actividad Geomagnética 21 Apr a 23 Apr
| A. Latitudes Medias | |||
|---|---|---|---|
| Activo | 25% | 30% | 25% |
| Tormenta Menor | 10% | 15% | 10% |
| Tormenta Mayor-Severa | 01% | 05% | 05% |
| B. Latitudes Altas | |||
|---|---|---|---|
| Activo | 30% | 30% | 30% |
| Tormenta Menor | 15% | 15% | 15% |
| Tormenta Mayor-Severa | 05% | 05% | 05% |
All times in UTC
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