Viendo archivo del martes, 18 agosto 1998
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 1998 Aug 18 2200 UTCPreparado por NOAA © SWPC y procesado por SpaceWeatherLive.com
Informe conjunto USAF/NOAA de actividad Solar y Geofísica
SDF Número 230 Publicado el 2200Z a las 18 AUG 1998IA. Análisis de regiones solares activas y de actividad desde 17-2100Z hasta 18-2100Z SOLAR ACTIVITY HAS BEEN HIGH. TWO X LEVEL (1.2 AT
17/2120UT AND 2.8 AT 18/0818UT)AND ONE M LEVEL (1.5 AT 18/0414UT)
X-RAY EVENTS HAVE OCCURRED IN THE LAST 24 HOURS. THEY ARE BEING
ASSOCIATED WITH REGION 8307 (N30E77) WHICH IS IN THE PROCESS OF
CROSSING THE LIMB. OPTICAL AND X-RAY SENSORS HAVE SHOWN CORONAL
LOOPS AND RAIN AS WELL AS ACTIVE SURGES AND BRIGHTENINGS. A SINGLE
SPOT HAS COME OVER THE LIMB AT TIME OF ISSUE, BUT OF UNKNOWN TYPE.
SUB-FAINT FLARES HAVE OCCURRED IN REGIONS 8297 (N32W80) AND 8299
(N16W69). A TYPE IV AND 10CM BURST WERE ASSOCIATED WITH THE X2.8
FLARE WHICH OCCURRED AT 0818UT. NO PARTICLE, PCA, OR GLE EVENTS
HAVE TAKEN PLACE, AND THEY ARE NOT EXPECTED TO OCCUR.
IB. Pronóstico de la actividad solar
SOLAR ACTIVITY IS EXPECTED TO BE
MODERATE TO HIGH.
IIA. Resumen de la actividad geofísica 17-2100Z a 18-2100Z
THE GEOMAGNETIC FIELD HAS BEEN QUIET. A CORONAL HOLE WHICH EXTENDS
FROM THE NORTHERN POLE TO ALMOST N30 IS BELIEVED TO BE MOVING ACROSS
THE CENTRAL MERIDIAN AND INTO A GEOEFFECTIVE POSITION. THREE DSFS
OCCURRED IN THE LAST 24 HOURS. THE SIZES AND LOCATIONS WERE 9 DEG
AT S30E22 ENDING AT 17/2332, 15 DEG AT N44W38 ENDING AT 17/2332, AND
10 DEG AT S51E16 ENDING AT 18/1150. THESE COMBINED WITH AN EXPECTED
HIGH SPEED STREAM ARE CAUSE FOR EXPECTING HIGHER GEOMAGNETIC
ACTIVITY IN THE NEXT 3 DAYS.
IIB. Pronóstico de la actividad geofísica
THE GEOMAGNETIC FIELD IS
EXPECTED TO BE UNSETTLED TO ACTIVE WITH ISOLATED MINOR STORM
CONDITIONS AT HIGHER LATITUDES NEAR THE END OF THE DAY AND LATER IN
THE PERIOD.
III. Probabilidades del evento 19 AUG a 21 AUG
| Clase M | 75% | 75% | 75% |
| Clase X | 25% | 30% | 30% |
| Protón | 10% | 10% | 15% |
| PCAF | GREEN | ||
IV. Penticton 10.7cm flujo
Observado 18 AUG 133 Previsto 19 AUG-21 AUG 140/140/145 Media de 90 Días 18 AUG 114
V. Índices Geomagnéticos A
OBSERVED AFR/AP 17 AUG 001/005 ESTIMATED AFR/AP 18 AUG 005/010 PREDICTED AFR/AP 19 AUG-21 AUG 010/015-015/020-020/020
VI. Probabilidades de Actividad Geomagnética 19 AUG a 21 AUG
| A. Latitudes Medias | |||
|---|---|---|---|
| Activo | 10% | 20% | 20% |
| Tormenta Menor | 05% | 10% | 10% |
| Tormenta Mayor-Severa | 01% | 05% | 05% |
| B. Latitudes Altas | |||
|---|---|---|---|
| Activo | 15% | 25% | 25% |
| Tormenta Menor | 05% | 10% | 15% |
| Tormenta Mayor-Severa | 01% | 05% | 05% |
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