Viendo archivo del miércoles, 4 agosto 1999
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 1999 Aug 04 2200 UTCPreparado por NOAA © SWPC y procesado por SpaceWeatherLive.com
Informe conjunto USAF/NOAA de actividad Solar y Geofísica
SDF Número 216 Publicado el 2200Z a las 04 AUG 1999IA. Análisis de regiones solares activas y de actividad desde 03-2100Z hasta 04-2100Z SOLAR ACTIVITY REMAINED AT HIGH LEVELS. REGION 8647
(S18W75) PRODUCED AN M6/1N FLARE AT 04/0557Z ASSOCIATED WITH A WEAK
TYPE II RADIO SWEEP (EST. SHOCK VELOCITY 400 KM/SEC) AND A 230 SFU
TENFLARE. IT ALSO PRODUCED AN M1/SF FLARE AT 04/1607Z. THIS REGION
SHOWED LITTLE CHANGE DURING THE PERIOD AND WAS OF MODERATE SIZE AND
MAGNETIC COMPLEXITY. REGION 8651 (N25W31) REMAINED A LARGE F-TYPE
GROUP OF MODERATE MAGNETIC COMPLEXITY, BUT APPEARED TO BE SLOWLY
DECAYING. IT PRODUCED TWO SUBFLARES DURING THE PERIOD. REGION 8645
(S26W66) REMAINED MODERATE IN SIZE AND MAGNETIC COMPLEXITY AND
SHOWED LITTLE CHANGE AS IT PRODUCED ISOLATED SUBFLARES. NEW REGION
8660 (S34W25), A SMALL B-TYPE GROUP, WAS NUMBERED TODAY.
IB. Pronóstico de la actividad solar
SOLAR ACTIVITY IS EXPECTED TO BE
MODERATE. ISOLATED M-CLASS FLARES ARE POSSIBLE FROM REGIONS 8645,
8647, AND 8651. THERE IS ALSO A CHANCE FOR ANOTHER MAJOR FLARE FROM
REGION 8647.
IIA. Resumen de la actividad geofísica 03-2100Z a 04-2100Z
THE GEOMAGNETIC FIELD WAS AT QUIET TO ACTIVE LEVELS. A SUDDEN IMPULSE
OCCURRED AT 04/0225Z (25 NT, AS MEASURED BY THE BOULDER USGS
MAGNETOMETER). FIELD ACTIVITY INCREASED FOLLOWING THE IMPULSE WITH
ACTIVE LEVELS DETECTED DURING THE 04/0300 - 0600Z INTERVAL. ACTIVITY
DECREASED TO QUIET TO UNSETTLED LEVELS DURING THE REMAINDER OF THE
PERIOD.
IIB. Pronóstico de la actividad geofísica
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE AT QUIET TO UNSETTLED LEVELS THROUGH THE PERIOD.
THERE APPEARED TO BE NO EARTH-DIRECTED CORONAL MASS EJECTIONS
ASSOCIATED WITH THE MAJOR FLARES OF 02 AND 04 AUGUST.
III. Probabilidades del evento 05 AUG a 07 AUG
| Clase M | 80% | 70% | 50% |
| Clase X | 20% | 15% | 10% |
| Protón | 10% | 10% | 05% |
| PCAF | GREEN | ||
IV. Penticton 10.7cm flujo
Observado 04 AUG 200 Previsto 05 AUG-07 AUG 195/185/175 Media de 90 Días 04 AUG 165
V. Índices Geomagnéticos A
OBSERVED AFR/AP 03 AUG 005/008 ESTIMATED AFR/AP 04 AUG 012/015 PREDICTED AFR/AP 05 AUG-07 AUG 012/015-010/010-005/008
VI. Probabilidades de Actividad Geomagnética 05 AUG a 07 AUG
| A. Latitudes Medias | |||
|---|---|---|---|
| Activo | 25% | 20% | 15% |
| Tormenta Menor | 05% | 05% | 01% |
| Tormenta Mayor-Severa | 01% | 01% | 01% |
| B. Latitudes Altas | |||
|---|---|---|---|
| Activo | 25% | 25% | 15% |
| Tormenta Menor | 10% | 10% | 05% |
| Tormenta Mayor-Severa | 01% | 01% | 01% |
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