Viewing archive of måndag, 23 april 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 Apr 23 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 114 publicerat klockan 2200Z på 23 Apr 2012IA. Analys av solfläcksgrupper och solaktivitet från 22-2100Z till 23-2100Z Solar activity has been at low levels for the past 24
hours. There are currently 8 active regions on the disk, with 5
regions having sunspots. The spotted regions on the disk all
remained rather quiet and stable throughout the period. However,
around plage Region 1461 (N10W19), two C-class events were observed
today with associated Earth directed CMEs.
IB. Prognos för solaktivitet
Solar activity is expected to be at
low levels with a chance for M-class x-ray events for the next three
days (24 - 26 April).
IIA. Sammanfattning av geofysisk aktivitet 22-2100Z till 23-2100Z
The geomagnetic field has been at quiet to minor storm levels for the
past 24 hours. Observations made by the ACE spacecraft, around
23/0200Z, indicated the arrival of a CME that lifted off the solar
disk on 19 April. Solar wind velocities increased from 350 - 400
km/s with the total IMF reaching around 18 nT. The Boulder
magnetometer measured a 31 nT sudden impulse at 23/0325Z in
conjunction with the CME arrival here at Earth. From then on, active
to minor storm levels were observed due to multiple periods of
sustained negative Bz.
IIB. Prognos för geofysisk aktivitet
The geomagnetic field is
expected to be at quiet to active levels with a slight chance for a
minor storm on day 1 (24 April) as effects from the CME wane and a
coronal hole high speed stream (CH HSS) moves in. Quiet to active
levels are expected on day two (25 April) as the effects of the CH
HSS continue. An increase to quiet to minor storm levels are
expected on day three (26 April) as the two CMEs, observed earlier
in the period, are expected to become geoeffective.
III. Chans för solutbrott från 24 Apr till 26 Apr
| M-klass | 30% | 30% | 30% |
| X-klass | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observerad 23 Apr 142 Prognoserat 24 Apr-26 Apr 140/140/135 90 Day Mean 23 Apr 112
V. Geomagnetiskt A-index
Observerad Afr/Ap 22 Apr 007/008 Förväntat Afr/Ap 23 Apr 016/025 Prognoserat Afr/Ap 24 Apr-26 Apr 012/018-008/012-011/018
VI. Chanser för geomagnetisk aktivitet från 24 Apr till 26 Apr
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 40% | 25% | 40% |
| Små stormförhållanden | 15% | 05% | 15% |
| Svåra stormförhållanden | 01% | 01% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 50% | 40% | 50% |
| Små stormförhållanden | 30% | 20% | 30% |
| Svåra stormförhållanden | 10% | 05% | 10% |
Senaste nytt
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Rymdvädersfakta
| Senaste X-utbrottet | 2024/03/28 | X1.1 |
| Senaste M-utbrottet | 2024/04/25 | M1.0 |
| Senaste geomagnetiska stormen | 2024/04/19 | Kp7 (G3) |
| Fläckfria dagar | |
|---|---|
| Senaste dag utan solfläckar | 2022/06/08 |
| Månadsvis faktiskt antal solfläckar | |
|---|---|
| mars 2024 | 104.9 -19.8 |
| Last 30 days | 133.9 +26.6 |