Viendo archivo del viernes, 18 mayo 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 May 18 2200 UTCPreparado por NOAA © SWPC y procesado por SpaceWeatherLive.com
Informe conjunto USAF/NOAA de actividad Solar y Geofísica
SDF Número 138 Publicado el 2200Z a las 18 May 2001IA. Análisis de regiones solares activas y de actividad desde 17-2100Z hasta 18-2100Z Solar activity was low. Region 9461 (N19E39) was the
most active region during the period, producing a C4/Sf event at
17/2142 UTC. The largest event was an optically uncorrelated C6
flare at 18/0640 UTC. Regions 9454 (N14W33) and 9455 (S17W80) began
to show signs of decay and decreased activity today. One new region
was numbered overnight, 9462 (N16E65).
IB. Pronóstico de la actividad solar
Solar activity is expected to be
mostly low. Region 9461 could possibly produce isolated M-class
events.
IIA. Resumen de la actividad geofísica 17-2100Z a 18-2100Z
The geomagnetic field ranged from quiet to unsettled levels. The
greater than 2 MeV electron flux at geosynchronous orbit reached
high levels during the period.
IIB. Pronóstico de la actividad geofísica
The geomagnetic field is
expected to be a quiet to unsettled levels. The greater than 2 MeV
electron flux may reach moderate to high levels during the period.
III. Probabilidades del evento 19 May a 21 May
| Clase M | 30% | 30% | 30% |
| Clase X | 01% | 01% | 01% |
| Protón | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7cm flujo
Observado 18 May 138 Previsto 19 May-21 May 140/135/130 Media de 90 Días 18 May 167
V. Índices Geomagnéticos A
Observado Afr/Ap 17 May 007/009 Estimado Afr/Ap 18 May 010/011 Previsto Afr/Ap 19 May-21 May 010/010-008/015-008/012
VI. Probabilidades de Actividad Geomagnética 19 May a 21 May
| A. Latitudes Medias | |||
|---|---|---|---|
| Activo | 01% | 01% | 01% |
| Tormenta Menor | 01% | 01% | 01% |
| Tormenta Mayor-Severa | 01% | 01% | 01% |
| B. Latitudes Altas | |||
|---|---|---|---|
| Activo | 25% | 25% | 25% |
| Tormenta Menor | 10% | 10% | 10% |
| Tormenta Mayor-Severa | 00% | 00% | 00% |
All times in UTC
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| Último evento clase X | 30/03/2026 | X1.4 |
| Último evento clase M | 28/03/2026 | M1.3 |
| Últimas tormentas geomagnéticas | 25/03/2026 | Kp5+ (G1) |
| Días sin manchas | |
|---|---|
| Last 365 days | 3 días |
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| Último día sin manchas | 24/02/2026 |
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