Viendo archivo de miércoles, 26 septiembre 2001

Informe actividad solar

Informe de actividad Solar-Geofísica 2001 Sep 26 2200 UTC
Preparado por NOAA © SWPC y procesado por

Informe conjunto USAF/NOAA de actividad Solar y Geofísica

SDF Número 269 Publicado el 2200Z a las 26 Sep 2001

IA. Análisis de regiones solares activas y de actividad desde 25-2100Z hasta 26-2100Z

Solar activity has been moderate. Region 9628 (S18W26) produced today's only M-class event, an M1 at 0258 UTC. The region has shown a slight decline and simplification relative to yesterday, but continues to be the largest on the disk and continues to have strong, complex magnetic fields. Region 9632 (S19W08) also continues to be impressive but produced only low-level C-class events. Region 9636 (N13E40) appears to be growing slowly and managed to produce a couple subflares. New Region 9639 (N04E36) was assigned today and is a simple beta-type sunspot group.
IB. Pronóstico de la actividad solar
Solar activity is expected to be moderate. There is a fair chance, however, for an isolated major flare event or proton producing event from either of Regions 9632 or 9628.
IIA. Resumen de la actividad geofísica 25-2100Z a 26-2100Z
The geomagnetic field has ranged from quiet to major storm levels during the past 24 hours. Following yesterday's sudden storm commencement at 2025 UTC, the geomagnetic field became disturbed, and attained major storm levels between 2100-2400 UTC. Conditions declined slightly from 0000-1200 UTC, with active to minor storm levels predominating. Activity was quiet to unsettled for the remainder of the period. The greater than 10 MeV proton event continues in progress. A maximum flux of 12900 pfu was observed at 25/2235 UTC, after which the flux levels have been steadily declining. The greater than 100 MeV proton event that began at 1440 UTC on the 24th attained maximum of 31 PFU at 25/0755 UTC and ended at 26/1940 UTC.
IIB. Pronóstico de la actividad geofísica
The geomagnetic field is expected to be mostly unsettled during the next three days. There is a chance for some active periods during the next 12 hours due to persistence. Unsettled levels should dominate on the second day. There is a chance for some active periods on the third day due to the favorable position of a solar coronal hole. The greater than 10 MeV proton event is expected to continue for the next 42-48 hours.
III. Probabilidades del evento 27 Sep a 29 Sep
Clase M80%80%80%
Clase X30%30%30%
PCAFin progress
IV. Penticton 10.7cm flujo
  Observado       26 Sep 283
  Previsto   27 Sep-29 Sep  280/275/275
  Media de 90 Días        26 Sep 171
V. Índices Geomagnéticos A
  Observado Afr/Ap 25 Sep  017/018
  Estimado     Afr/Ap 26 Sep  022/025
  Previsto    Afr/Ap 27 Sep-29 Sep  015/010-010/010-015/015
VI. Probabilidades de Actividad Geomagnética 27 Sep a 29 Sep
A. Latitudes Medias
Tormenta Menor20%15%25%
Tormenta Mayor-Severa10%05%10%
B. Latitudes Altas
Tormenta Menor20%15%30%
Tormenta Mayor-Severa15%05%20%

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