Viewing archive of onsdag, 3 november 2004

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 2004 Nov 03 2200 UTC
Skapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com

USAF/NOAA rapport för sol- och geofysisk aktivitet

SDF Nummer 308 publicerat klockan 2200Z på 03 Nov 2004

IA. Analys av solfläcksgrupper och solaktivitet från 02-2100Z till 03-2100Z

Solar activity was high during the last 24 hours due to an M5/Sn flare from Region 696 (N09E32) at 1547 UTC. The flare was accompanied by type II and type IV radio sweeps, strong radio bursts, and an asymmetric halo CME with plane-of-sky velocity of about 900 km/s. The majority of the CME mass was observed over the northeast limb. Region 696 produced additional M-flares including an M1/1n at 0335 UTC (accompanied by type II and type IV sweeps and a bright, partial halo CME off the northeast limb), and an M1/Sf at 1826 UTC. The region has more than doubled in size, and of particular note is the emergence of positive polarity magnetic flux just ahead of the strong, negative polarity leader spots. The magnetic inversion between these parts of the group is driving the increased flare production and is close to becoming a magnetic delta configuration. Region 691 (N13W81) started producing flares again after a quiet day yesterday, including an M2/1f at 0133 UTC which was accompanied by a type II sweep. Region 693 (S15W18) continues to be the largest group on the disk but only managed to produce a C2/Sf at 0931 UTC. There is some negative polarity flux emerging in the positive polarity trailer which could trigger more frequent flare activity out of this region.
IB. Prognos för solaktivitet
Solar activity is expected to be moderate, but there is a fair chance for an isolated major flare event over the next three days from Region 696, Region 691, or Region 693.
IIA. Sammanfattning av geofysisk aktivitet 02-2100Z till 03-2100Z
The geomagnetic field was mostly quiet to unsettled during the past 24 hours. There was one active period from 0900-1200 UTC.
IIB. Prognos för geofysisk aktivitet
The geomagnetic field is expected to be mostly unsettled with possible active periods for the next two days (04-05 November) due to coronal hole effects. The CME associated with today's M5 flare is expected to arrive on the third day (06 November) and is expected to increase activity to mostly active levels with occasional periods of minor storm levels.
III. Chans för solutbrott från 04 Nov till 06 Nov
M-klass65%65%55%
X-klass20%20%15%
Proton20%20%15%
PCAFyellow
IV. Penticton 10.7 cm Flux
  Observerad       03 Nov 136
  Prognoserat   04 Nov-06 Nov  135/130/130
  90 Day Mean        03 Nov 108
V. Geomagnetiskt A-index
  Observerad Afr/Ap 02 Nov  002/004
  Förväntat     Afr/Ap 03 Nov  005/007
  Prognoserat    Afr/Ap 04 Nov-06 Nov  012/015-012/015-025/030
VI. Chanser för geomagnetisk aktivitet från 04 Nov till 06 Nov
A. Medelhöga breddgrader
Aktivt25%25%35%
Små stormförhållanden15%15%25%
Svåra stormförhållanden05%05%15%
B. Höga breddgrader
Aktivt30%30%25%
Små stormförhållanden15%15%35%
Svåra stormförhållanden10%10%25%

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