Viewing archive of tisdag, 21 januari 2003

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 2003 Jan 21 2200 UTC
Skapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com

USAF/NOAA rapport för sol- och geofysisk aktivitet

SDF Nummer 021 publicerat klockan 2200Z på 21 Jan 2003

IA. Analys av solfläcksgrupper och solaktivitet från 20-2100Z till 21-2100Z

Solar activity increased to moderate levels. Newly assigned Region 269 (S09E76) produced the largest flare during the period, an M1.9 x-ray event with associated loops occurred at 21/1526 UTC (no optical flare reported due to source center being just beyond the east limb). Based on NASA/LASCO imagery, this event produced a CME and it is doubtful that it will become geoeffective. Unable to determine how mature this region is at the time of this writing due to it's proximity to the east limb. Region 260 (N14W00) produced several C-class events throughout the interval and became slightly more magnetically complex during the past 24 hours. A C8.1 flare (correlated using SOHO/EIT imagery) occurred at 21/0228 UTC with an associated Type II radio sweep that had an estimated shock velocity of 700 km/sec. A C4.1/Sf event occurred at 21/0557 UTC that had an associated Type II radio sweep (shock velocity estimated at 700 km/sec) and a Tenflare. A 36 degree disappearing solar filament was observed at the beginning of the period that produced a CME which does not appear to be earth-directed. Region 268 (N12E23) was also numbered today.
IB. Prognos för solaktivitet
Solar activity is expected to be at low levels. There is a chance of further M-class flare activity from region 269 pending further analysis as it rotates onto the visible disk.
IIA. Sammanfattning av geofysisk aktivitet 20-2100Z till 21-2100Z
The geomagnetic field was at quiet to active levels. A lingering southern coronal hole extension high speed stream is believed to be responsible for the elevated conditions. The greater than 2 MeV electron flux at geosynchronous orbit reached high levels today.
IIB. Prognos för geofysisk aktivitet
The geomagnetic field is expected to be at predominantly unsettled levels for day one of the forecast period. By day two a transequatorial recurrent high speed stream coronal hole should become geoeffective producing active to minor storm conditions with isolated major storm periods possible.
III. Chans för solutbrott från 22 Jan till 24 Jan
M-klass35%35%35%
X-klass01%01%01%
Proton01%01%01%
PCAFgreen
IV. Penticton 10.7 cm Flux
  Observerad       21 Jan 134
  Prognoserat   22 Jan-24 Jan  135/140/135
  90 Day Mean        21 Jan 160
V. Geomagnetiskt A-index
  Observerad Afr/Ap 20 Jan  012/017
  Förväntat     Afr/Ap 21 Jan  010/010
  Prognoserat    Afr/Ap 22 Jan-24 Jan  010/015-020/020-020/020
VI. Chanser för geomagnetisk aktivitet från 22 Jan till 24 Jan
A. Medelhöga breddgrader
Aktivt25%40%40%
Små stormförhållanden05%25%20%
Svåra stormförhållanden01%10%10%
B. Höga breddgrader
Aktivt35%45%45%
Små stormförhållanden10%30%30%
Svåra stormförhållanden05%15%15%

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