Viewing archive of torsdag, 1 november 2001

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 2001 Nov 01 2200 UTC
Skapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com

USAF/NOAA rapport för sol- och geofysisk aktivitet

SDF Nummer 305 publicerat klockan 2200Z på 01 Nov 2001

IA. Analys av solfläcksgrupper och solaktivitet från 31-2100Z till 01-2100Z

Solar activity has been high due to five M-class events observed during the past 24 hours. The largest of these was an M3/Sf at 1210 UTC from newly numbered Region 9687 (S19E71). Region 9687 produced three additional M-class events and exhibited frequent brightenings throughout the day. An additional M-class event (M1/Sf) came from Region 9678 (N07W75) at 0653 UTC. Region 9682 (N11W22) continues to dominate the disk in terms of apparent size and magnetic complexity, and also exhibited occasional flare activity during the day, some of which were occurring at the same time as flare activity in Region 9687. SXI imagery clearly indicated, however, that new Region 9687 was the dominant contributor to the X-ray flux during the four M-class events mentioned previously.
IB. Prognos för solaktivitet
Solar activity is expected to be moderate to high. M-class events should continue, with regions 9687 and 9682 being the main contributors to activity. There continues to be a chance for an isolated major flare event or proton producing event during the next three days.
IIA. Sammanfattning av geofysisk aktivitet 31-2100Z till 01-2100Z
The geomagnetic field ranged from unsettled to minor storm levels during the past 24 hours. Approximately five hours after yesterday's shock at 31/1352 UTC, the interplanetary magnetic field turned southward and maintained moderately strong negative values (-8 to -12 nT) from 31/1810 UTC until around 01/1710 UTC. This led to mostly active levels, with a minor storm period from 0600-0900 UTC. At forecast issue time activity had declined to unsettled and Bz was weakly northwards.
IIB. Prognos för geofysisk aktivitet
The geomagnetic field is expected to be mostly unsettled for the next three days.
III. Chans för solutbrott från 02 Nov till 04 Nov
M-klass90%90%90%
X-klass25%25%25%
Proton20%20%20%
PCAFyellow
IV. Penticton 10.7 cm Flux
  Observerad       01 Nov 236
  Prognoserat   02 Nov-04 Nov  225/225/230
  90 Day Mean        01 Nov 204
V. Geomagnetiskt A-index
  Observerad Afr/Ap 31 Oct  008/009
  Förväntat     Afr/Ap 01 Nov  025/025
  Prognoserat    Afr/Ap 02 Nov-04 Nov  012/012-012/010-010/010
VI. Chanser för geomagnetisk aktivitet från 02 Nov till 04 Nov
A. Medelhöga breddgrader
Aktivt25%25%20%
Små stormförhållanden15%15%15%
Svåra stormförhållanden05%05%05%
B. Höga breddgrader
Aktivt25%25%20%
Små stormförhållanden15%15%15%
Svåra stormförhållanden10%10%05%

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