Viewing archive of onsdag, 25 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 25 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 116 publicerat klockan 2200Z på 25 Apr 2012IA. Analys av solfläcksgrupper och solaktivitet från 24-2100Z till 25-2100Z Solar activity was at low levels. Region 1459 (S16W65)
produced a C1 x-ray event at 25/0224Z while Region 1460 (N15W81)
produced a C3/Sf at 25/1215Z. Region 1465 (S17W26) indicated
consolidation in both its leader and trailer spots. The region
appeared to have lost its gamma and delta magnetic configuration,
but still maintained an east to west oriented inversion line. No
discernible changes were noted in the remaining regions. No
Earth-directed CMEs were observed during the period.
IB. Prognos för solaktivitet
Solar activity is expected to remain
at low levels with a slight chance for M-class activity for the next
three days (26 - 28 April).
IIA. Sammanfattning av geofysisk aktivitet 24-2100Z till 25-2100Z
The geomagnetic field ranged from quiet to minor storm conditions
with an isolated high latitude severe storm period observed during
25/0600Z - 0900Z. This activity was due to coronal hole high speed
stream affects (CH HSS). Over the past 24 hours, solar wind
velocities gradually increased from about 600 km/s to near 800 km/s.
Total field strength (Bt) varied between 5 to 12 nT while the Bz
component of the interplanetary magnetic field remained mostly south
from -4 to -10 nT. The greater than 2 MeV electron flux at
geosynchronous orbit reached high levels during the period.
IIB. Prognos för geofysisk aktivitet
The geomagnetic field is
expected to be at quiet to active levels with isolated minor storm
periods on day one (26 April) as the 23 April CME is expected to
become geoeffective. Quiet to unsettled levels with isolated active
periods are expected on day two (27 April) as effects of the CME
wane. By day three (28 April), mostly quiet conditions are expected.
III. Chans för solutbrott från 26 Apr till 28 Apr
| M-klass | 20% | 20% | 20% |
| X-klass | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observerad 25 Apr 127 Prognoserat 26 Apr-28 Apr 125/120/120 90 Day Mean 25 Apr 112
V. Geomagnetiskt A-index
Observerad Afr/Ap 24 Apr 030/043 Förväntat Afr/Ap 25 Apr 018/022 Prognoserat Afr/Ap 26 Apr-28 Apr 017/025-011/015-004/006
VI. Chanser för geomagnetisk aktivitet från 26 Apr till 28 Apr
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 50% | 25% | 10% |
| Små stormförhållanden | 20% | 10% | 01% |
| Svåra stormförhållanden | 10% | 05% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 40% | 30% | 10% |
| Små stormförhållanden | 30% | 15% | 01% |
| Svåra stormförhållanden | 15% | 10% | 01% |
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Rymdvädersfakta
| Senaste X-utbrottet | 2024/03/28 | X1.1 |
| Senaste M-utbrottet | 2024/04/19 | 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 |