Viewing archive of onsdag, 25 mars 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 Mar 25 2200 UTC
Skapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com

USAF/NOAA rapport för sol- och geofysisk aktivitet

SDF Nummer 084 publicerat klockan 2200Z på 25 MAR 1998

IA. Analys av solfläcksgrupper och solaktivitet från 24-2100Z till 25-2100Z

SOLAR ACTIVITY REMAINED LOW. A VERY LONG DURATION C5 X-RAY EVENT WAS OBSERVED FROM 25/1231-1434Z (HALF POWER). HOWEVER, X-RAY FLUXES FROM THIS EVENT DID NOT RETURN TO BACKGROUND UNTIL THE END OF THE PERIOD. A LARGE FAST CORONAL MASS EJECTION WAS OBSERVED IN THE SOUTHWEST QUADRANT WITH THIS EVENT AND RECENT X-RAY IMAGERY SHOW THIS FLARE ORIGINATING FROM BEHIND THE SOUTHWEST LIMB. THE SOURCE REGIONS THERE ARE 2-3 DAYS BEHIND THE LIMB. REGION 8185 (S25E25) SHOWED SLIGHT DECAY AND PRODUCED SEVERAL SUBFLARES. THIS REGION REMAINED MAGNETICALLY COMPLEX. A SMALL FILAMENT FADED IN THIS REGION BETWEEN 25/0112-1320Z. REGION 8183 (N22W32) CEASED ITS RAPID GROWTH PHASE AND BEGAN TO DECAY. AN OPTICALLY UNCORRELATED WEAK TYPE IV WAS OBSERVED AT 24/2207Z.
IB. Prognos för solaktivitet
SOLAR ACTIVITY SHOULD BE PREDOMINANTLY LOW FOR THE NEXT THREE DAYS. REGION 8185 IS BECOMING LESS A THREAT FOR M-CLASS FLARES.
IIA. Sammanfattning av geofysisk aktivitet 24-2100Z till 25-2100Z
THE GEOMAGNETIC FIELD WAS QUIET TO UNSETTLED FROM 24/2100Z-25/0900Z. UNSETTLED TO ACTIVE CONDITIONS WERE OBSERVED FOR THE REMAINDER OF THE PERIOD. IT IS LIKELY THIS SMALL DISTURBANCE IS FROM AN OBLIQUE IMPACT OF ONE OF THE MANY CORONAL MASS EJECTIONS OBSERVED DURING THE LAST WEEK.
IIB. Prognos för geofysisk aktivitet
THE GEOMAGNETIC FIELD SHOULD BE UNSETTLED TO ACTIVE ON 26 MAR. ISOLATED MINOR STORM PERIODS ARE POSSIBLE DURING THIS TIME. QUIET TO UNSETTLED CONDITIONS ARE FORECAST FOR 27-28 MAR.
III. Chans för solutbrott från 26 MAR till 28 MAR
M-klass20%20%20%
X-klass05%05%05%
Proton05%05%05%
PCAFGREEN
IV. Penticton 10.7 cm Flux
  Observerad       25 MAR 115
  Prognoserat   26 MAR-28 MAR  113/111/111
  90 Day Mean        25 MAR 099
V. Geomagnetiskt A-index
OBSERVED AFR/AP 24 MAR  005/007
ESTIMATED AFR/AP 25 MAR  012/012
PREDICTED AFR/AP 26 MAR-28 MAR  012/015-010/012-010/010
VI. Chanser för geomagnetisk aktivitet från 26 MAR till 28 MAR
A. Medelhöga breddgrader
Aktivt30%20%20%
Små stormförhållanden15%10%10%
Svåra stormförhållanden05%05%05%
B. Höga breddgrader
Aktivt35%25%20%
Små stormförhållanden20%15%10%
Svåra stormförhållanden10%05%05%

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