Viewing archive of måndag, 9 november 1998

Solaktivitetsrapport

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.
Rapport för sol- och geofysisk aktivitet 1998 Nov 09 2200 UTC
Skapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com

USAF/NOAA rapport för sol- och geofysisk aktivitet

SDF Nummer 313 publicerat klockan 2200Z på 09 NOV 1998

IA. Analys av solfläcksgrupper och solaktivitet från 08-2100Z till 09-2100Z

SOLAR ACTIVITY REMAINED MODERATE. REGION 8375 (N21W74) PRODUCED AN M1/1F AT 08/2256Z. THIS REGION RETAINED ITS MIXED POLARITIES AND ITS AREAL COVERAGE IN WHITE LIGHT WAS UNCHANGED. NEW REGION 8384 (S27E78) APPEARED AS A MODERATE SIZE H CLASS SPOT. A SUSPECTED SPRAY OCCURRED FROM THIS REGION BETWEEN 09/0134-0216Z. THIS EVENT MAY HAVE BEEN ASSOCIATED WITH A C3 X-RAY ENHANCEMENT AT 09/0153Z. A FILAMENT LOCATED NEAR N24E25 FADED BETWEEN 08/2318-2330Z. SEVERAL CORONAL MASS EJECTIONS WERE OBSERVED IN THE SOHO CORONAGRAPH DURING THE PERIOD. THE LARGEST WERE FROM MODERATELY HIGH LATITUDES ON THE SOUTHEAST AND NORTHWEST LIMBS. THE MAUNA LOA CORONAGRAPH OBSERVED AN ERUPTIVE PROMINENCE AND ASSOCIATED CORONAL MASS EJECTION FROM NW40-70 BEGINNING AT 09/1915Z.
IB. Prognos för solaktivitet
SOLAR ACTIVITY SHOULD BE LOW TO MODERATE FOR 10-11 NOV. REGION 8375 REMAINS CAPABLE OF PRODUCING OCCASIONAL M-CLASS EVENTS AND ISOLATED LARGER EVENTS. REGION 8384 COULD PRODUCE AN ISOLATED M-CLASS EVENT.
IIA. Sammanfattning av geofysisk aktivitet 08-2100Z till 09-2100Z
THE GEOMAGNETIC FIELD RANGED FROM UNSETTLED TO MAJOR STORM LEVELS. THE MOST DISTURBED PERIOD WAS FROM 09/0600-1200Z. SOME HIGH LATITUDE SITES EXPERIENCED SEVERE STORMING DURING THAT TIME. SOLAR WIND DATA WAS CHARACTERIZED BY A STRONG SOUTHWARD BZ BEGINNING AROUND 09/0330Z, DECREASING VELOCITY, AND DECREASING TOTAL FIELD MAGNITUDE. A FORBUSH DECREASE OF APPROXIMATELY 6 PERCENT WAS OBSERVED NEAR 09/0100Z.
IIB. Prognos för geofysisk aktivitet
THE GEOMAGNETIC FIELD SHOULD BE AT UNSETTLED TO MINOR STORM LEVELS FOR 10 NOV. PERIODS OF MAJOR STORMING ARE POSSIBLE ON THAT DAY. QUIET TO ACTIVE CONDITIONS ARE EXPECTED ON 11 NOV AS THE CURRENT DISTURBANCE SUBSIDES. QUIET TO UNSETTLED CONDITIONS SHOULD OCCUR ON 12 NOV.
III. Chans för solutbrott från 10 NOV till 12 NOV
M-klass65%60%15%
X-klass30%25%10%
Proton30%25%20%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observerad       09 NOV 162
  Prognoserat   10 NOV-12 NOV  162/156/145
  90 Day Mean        09 NOV 133
V. Geomagnetiskt A-index
OBSERVED AFR/AP 08 NOV  036/068
ESTIMATED AFR/AP 09 NOV  035/072
PREDICTED AFR/AP 10 NOV-12 NOV  020/025-012/012-010/012
VI. Chanser för geomagnetisk aktivitet från 10 NOV till 12 NOV
A. Medelhöga breddgrader
Aktivt20%20%20%
Små stormförhållanden10%10%10%
Svåra stormförhållanden15%10%05%
B. Höga breddgrader
Aktivt15%10%10%
Små stormförhållanden10%05%05%
Svåra stormförhållanden15%05%05%

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