Viewing archive of tisdag, 4 september 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 Sep 04 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 248 publicerat klockan 2200Z på 04 Sep 2012IA. Analys av solfläcksgrupper och solaktivitet från 03-2100Z till 04-2100Z Solar activity was low. Region 1564 (S14E14 -
Esi/beta-gamma) was the most active region, producing occasional
low-level C-class flares. It increased in spot count and area during
the first half of the period, but showed gradual spot and penumbral
decay during the latter half of the period. Region 1560 (N04W47 -
Eai/beta-gamma-delta) showed a slight decrease in spots and area,
but maintained a delta in its interior spots. No significant changes
were observed in the remaining spotted regions and no new regions
were numbered. No Earth-directed CME activity was observed during
the period.
IB. Prognos för solaktivitet
Solar activity is expected to be low
through the period (05 - 07 September) with a chance for an isolated
M-class flare.
IIA. Sammanfattning av geofysisk aktivitet 03-2100Z till 04-2100Z
Geomagnetic field activity ranged from quiet to minor storm levels
with major storm periods detected at high latitudes, all due to
residual CME effects. The greater than 10 MeV proton event at
geosynchronous orbit that began at 01/1335Z, reached a maximum of 59
pfu at 02/0850Z, and ended at 04/0625Z.
IIB. Prognos för geofysisk aktivitet
Geomagnetic field activity is
expected to be at quiet to unsettled levels during days 1 - 2 (05 -
06 September) with a chance for active levels. This is due to the
arrival of CMEs observed on 02 September along with a co-rotating
interaction region in advance of a coronal hole high-speed stream
(CH HSS). The CMEs are expected to arrive around midday on day 1.
The CH HSS is expected to commence on day 2. Field activity is
expected to be at quiet to unsettled levels on day 3 (07 September)
as CH HSS effects subside.
III. Chans för solutbrott från 05 Sep till 07 Sep
| M-klass | 25% | 25% | 25% |
| X-klass | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observerad 04 Sep 138 Prognoserat 05 Sep-07 Sep 135/135/130 90 Day Mean 04 Sep 124
V. Geomagnetiskt A-index
Observerad Afr/Ap 03 Sep 023/040 Förväntat Afr/Ap 04 Sep 012/014 Prognoserat Afr/Ap 05 Sep-07 Sep 010/012-010/010-007/008
VI. Chanser för geomagnetisk aktivitet från 05 Sep till 07 Sep
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 20% | 15% | 15% |
| Små stormförhållanden | 05% | 05% | 01% |
| Svåra stormförhållanden | 01% | 01% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 15% | 15% | 15% |
| Små stormförhållanden | 30% | 20% | 25% |
| Svåra stormförhållanden | 30% | 25% | 20% |
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