Viendo archivo del viernes, 6 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 06 2200 UTC
Preparado por NOAA © SWPC y procesado por SpaceWeatherLive.com

Informe conjunto USAF/NOAA de actividad Solar y Geofísica

SDF Número 096 Publicado el 2200Z a las 06 Apr 2001

IA. Análisis de regiones solares activas y de actividad desde 05-2100Z hasta 06-2100Z

Solar activity has been high during the past 24 hours. Region 9415 (S21E33) produced an X5/Sf flare at 1921Z (Please note that the optical class could only be measured well after the x-ray flare maximum due to weather hampering observations). Coronagraph observations from SOHO/LASCO showed a CME associated with this event just entering the C2 field of view at 1930Z. Region 9415 is the dominant region on the disk with 820 millionths area in an Eko, beta-gamma-delta configuration. The only other solar flares of note today were a few C-class subflares. Coronagraph data also showed that yesterday's CME, associated with the long-duration M5 event, could be classified as a full-halo event. Nonetheless the sequence of images give the impression that the center of the CME is not headed directly at the Earth. Note that today's 10.7 cm flux had to be estimated from the morning reading because intense solar radio burst activity interfered with the normal noontime reading.
IB. Pronóstico de la actividad solar
Solar activity is expected to be moderate to high during the next three days. Region 9415 is clearly the dominant region on the disk to watch for energetic flare activity, although regions 9417 and 9418 might possibly contribute a low-level M-class event.
IIA. Resumen de la actividad geofísica 05-2100Z a 06-2100Z
The geomagnetic field was mostly quiet to unsettled during the past 24 hours. Solar wind speeds continue to decline and solar wind density remains low. The greater than 10 MeV proton event continued to decline during the past 24 hours. As of 06/2100Z the fluxes were fluctuating below and above the threshold of 10 PFU, with a reading of 10.2 PFU at 2100Z.
IIB. Pronóstico de la actividad geofísica
The geomagnetic field is expected to be unsettled for the next 24 hours. An increase to active levels is expected on the second and third days as a response to a glancing blow from the halo CME associated with yesterday's M5 flare and possible additional influence from the CME associated with today's X5 event. There is a fair chance for an increase in the greater than 10 MeV proton fluxes sometime in the next 24 hours in response to today's X5 event as well, although the fluxes are likely to increase rather gradually with peak fluxes in the low 100's of PFU, and the spectrum will probably be relatively soft.
III. Probabilidades del evento 07 Apr a 09 Apr
Clase M80%80%80%
Clase X25%25%25%
Protón60%25%25%
PCAFyellow
IV. Penticton 10.7cm flujo
  Observado       06 Apr 192
  Previsto   07 Apr-09 Apr  200/195/190
  Media de 90 Días        06 Apr 167
V. Índices Geomagnéticos A
  Observado Afr/Ap 05 Apr  011/019
  Estimado     Afr/Ap 06 Apr  012/015
  Previsto    Afr/Ap 07 Apr-09 Apr  012/012-025/025-025/025
VI. Probabilidades de Actividad Geomagnética 07 Apr a 09 Apr
A. Latitudes Medias
Activo20%35%35%
Tormenta Menor10%20%20%
Tormenta Mayor-Severa05%25%30%
B. Latitudes Altas
Activo25%40%40%
Tormenta Menor15%25%25%
Tormenta Mayor-Severa05%15%30%

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