Visualització de l'arxiu de divendres, 27 d’abril 2007
Informe d'activitat solar
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.
Informe d'activitat Geofísica-Solar 2007 Apr 27 2203 UTCPreparat pel SWPC NOAA © i processat per SpaceWeatherLive.com
Informe conjunt segons USAF / NOAA d’activitat Solar i Geofísica
SDF número 117 emès a 2200Z el Apr 27 2007IA. Anàlisi de les regions actives solars i de l'activitat de 2100Z-26 a 2100Z-27 Solar activity was very low during the past 24 hours.
Region 953 (S10E49) produced several B-class events during the past
24 hours. As the region has rotated more fully into view, it now
appears that the group consists mostly of a large penumbral area
which contains opposite magnetic polarities, making the group a
beta-delta magnetic classification.
IB. Previsió d'activitat solar
Solar activity is expected to be very
low to low for the next three days (28-30 April), with a slight
chance for an isolated M-class event from Region 953.
IIA. Resum d'activitat geofísica del 2100Z-26 al 2100Z-27
The geomagnetic field was quiet to active during the past 24 hours.
An initially quiet to unsettled field became unsettled to active
with the onset of a high speed solar wind stream around 1500Z. Solar
wind velocity increased to about 600 km/s and the interplanetary
magnetic field showed fluctuations from about -9 nT to +7 nT.
IIB. Previsió d'activitat geofísica
The geomagnetic field is
expected to be mostly active with a chance for isolated minor storm
periods for the next 24 hours (28 April) as the high speed stream is
expected to continue. Unsettled levels with a chance for active
periods is expected for the second day (29 April) and conditions
should decline to mostly unsettled by the third day (30 April).
III. Probabilitats d’esdeveniments de les Apr del 28 a les Apr del 30
| Classe M | 15% | 15% | 15% |
| Classe X | 01% | 01% | 01% |
| Protó | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton Flux de 10,7 cm
Observat 27 Apr 083 Predit 28 Apr-30 Apr 085/085/085 Mitjana de 90 dies 27 Apr 074
V. Índexs geomagnètics A
Observat Afr/Ap 26 Apr 004/006 Estimat Afr/Ap 27 Apr 008/012 Predit Afr/Ap 28 Apr-30 Apr 020/030-015/015-010/010
VI. Probabilitats d’activitat geomagnètica del 28 Apr al 30 Apr
| A. Latituds mitjanes | |||
|---|---|---|---|
| Actiu | 45% | 30% | 15% |
| Tempesta menor | 25% | 15% | 05% |
| Tempesta major-severa | 10% | 05% | 01% |
| B. Latituds altes | |||
|---|---|---|---|
| Actiu | 45% | 30% | 20% |
| Tempesta menor | 30% | 20% | 15% |
| Tempesta major-severa | 15% | 10% | 05% |
All times in UTC
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Fets del temps al espai
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| Última Flamarada-M | 2024/05/19 | M1.6 |
| Última tempesta geomagnètica | 2024/05/17 | Kp6 (G2) |
| Dies sense taques | |
|---|---|
| Últim dia sense taques | 2022/06/08 |
| Número mensual mitjà de taques solars | |
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| Last 30 days | 168.7 +50.9 |