Viewing archive of lördag, 20 oktober 2012
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 2012 Oct 20 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 294 publicerat klockan 2200Z på 20 Oct 2012IA. Analys av solfläcksgrupper och solaktivitet från 19-2100Z till 20-2100Z Solar activity was high. An impulsive M9 flare
occurred at 20/1814Z from newly numbered Region 1598 (S15E82). This
region appeared to be responsible for several C-class flares as it
approached the visible disk and will continue to be the area of
interest for the next few days. An associated Type II radio sweep
was recorded with an estimated speed of 516 km/s. Region 1593
(N15E09) showed some shearing and spot loss over the past 24 hours,
while Region 1597 (S22W58) had some intermediate spot growth and
separation between leader and follower. The remaining regions
showed little to or no changes. No Earth-directed CMEs were
observed for the past 24 hours.
IB. Prognos för solaktivitet
Solar activity is expected to be low
for the next three days (21-23 October) with a chance for isolated
M-class flares.
IIA. Sammanfattning av geofysisk aktivitet 19-2100Z till 20-2100Z
The geomagnetic field was quiet over the past 24 hours. Solar wind
speed, as measured at the ACE spacecraft, steadily decreased from
approximately 440 km/s to near 380 km/s. The Bz component of the
interplanetary magnetic field continued to show minor deflections of
+/- 2 nT while total fields hovered near 4 nT. The greater than 2
MeV electron flux at geosynchronous orbit was at high levels
throughout the period.
IIB. Prognos för geofysisk aktivitet
The geomagnetic field is
expected to be quiet on day 1 (21 October). An increase to quiet to
unsettled levels is expected for days 2 and 3 (22-23 October) due to
the effects of a weak coronal hole high speed stream.
III. Chans för solutbrott från 21 Oct till 23 Oct
| M-klass | 40% | 40% | 40% |
| X-klass | 10% | 10% | 10% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observerad 20 Oct 151 Prognoserat 21 Oct-23 Oct 150/150/145 90 Day Mean 20 Oct 120
V. Geomagnetiskt A-index
Observerad Afr/Ap 19 Oct 003/002 Förväntat Afr/Ap 20 Oct 003/004 Prognoserat Afr/Ap 21 Oct-23 Oct 006/005-007/008-007/008
VI. Chanser för geomagnetisk aktivitet från 21 Oct till 23 Oct
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 10% | 10% | 10% |
| Små stormförhållanden | 01% | 01% | 01% |
| Svåra stormförhållanden | 01% | 01% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 15% | 20% | 20% |
| Små stormförhållanden | 20% | 25% | 25% |
| Svåra stormförhållanden | 10% | 15% | 15% |
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Rymdvädersfakta
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