Viewing archive of lördag, 18 februari 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 Feb 18 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 049 publicerat klockan 2200Z på 18 Feb 2012IA. Analys av solfläcksgrupper och solaktivitet från 17-2100Z till 18-2100Z Solar activity was at very low levels. New Region 1421
(N17E59) rotated onto the disk as a simple unipolar group. The
remainder of the disk and limb was quiet and stable. No
Earth-directed CMEs were detected.
IB. Prognos för solaktivitet
Solar activity is expected to be very
low with a chance for C-class activity for the next three days (19 -
21 February).
IIA. Sammanfattning av geofysisk aktivitet 17-2100Z till 18-2100Z
The geomagnetic field was at quiet levels. ACE solar wind velocities
were steady at 300 km/s through about 18/1500Z while the Bz
component of the interplanetary magnetic field remained mostly
north. After 1500Z, wind speed, temperature and density all
indicated gradual increases, while Bz indicated some rotation
through +/- 7 nT. These signatures were indicative of a co-rotating
interaction region in advance of a coronal hole high speed stream
(CH HSS).
IIB. Prognos för geofysisk aktivitet
The geomagnetic field is
expected to be at quiet to unsettled levels, with isolated active
periods, on day one (19 February) due to recurrent CH HSS effects.
By days two and three (20 - 21 February), a return to mostly quiet
levels is expected.
III. Chans för solutbrott från 19 Feb till 21 Feb
| M-klass | 01% | 01% | 01% |
| X-klass | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observerad 18 Feb 104 Prognoserat 19 Feb-21 Feb 105/110/110 90 Day Mean 18 Feb 131
V. Geomagnetiskt A-index
Observerad Afr/Ap 17 Feb 002/002 Förväntat Afr/Ap 18 Feb 003/005 Prognoserat Afr/Ap 19 Feb-21 Feb 008/008-004/005-003/005
VI. Chanser för geomagnetisk aktivitet från 19 Feb till 21 Feb
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 30% | 10% | 05% |
| Små stormförhållanden | 10% | 01% | 01% |
| Svåra stormförhållanden | 01% | 01% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 40% | 20% | 10% |
| Små stormförhållanden | 20% | 05% | 05% |
| Svåra stormförhållanden | 05% | 01% | 01% |
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