Visualització de l'arxiu de dissabte, 28 d’abril 2001
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 2001 Apr 28 2200 UTCPreparat pel SWPC NOAA © i processat per SpaceWeatherLive.com
Informe conjunt segons USAF / NOAA d’activitat Solar i Geofísica
SDF número 118 emès a 2200Z el Apr 28 2001IA. Anàlisi de les regions actives solars i de l'activitat de 2100Z-27 a 2100Z-28 Solar activity dropped to low levels. Region 9433
(N17W50) produced isolated C-class flares, the largest of which was
a C7/1f at 28/0934 UTC. Gradual decay continued in the leading and
intermediate portions of this region. However, no decay was evident
within its trailing spots, where a strong magnetic delta
configuration remained. Region 9441 (N07E23) continued a gradual
growth phase that began on 27 April, but the region remained a
moderate-sized, simply-structured bipole. New Regions 9444 (S11E67)
and 9445 (N23E76) were assigned.
IB. Previsió d'activitat solar
Solar activity is expected to be at
moderate to high levels. Region 9433 is expected to produce isolated
M-class flares. This region could also produce an isolated major
flare during the period.
IIA. Resum d'activitat geofísica del 2100Z-27 al 2100Z-28
Geomagnetic field activity ranged from quiet to minor storm levels.
An interplanetary shock at the leading edge of a CME passed the ACE
spacecraft at 28/0432 UTC, followed by a sudden impulse (SI) at
28/0520 UTC (76 nT, as measured by the Boulder USGS magnetometer).
The source for the CME was an M7/2b flare on 26 April. Field
activity increased to unsettled to minor storm levels following the
SI. The greater than 10 MeV proton flux at geosynchronous orbit
briefly crossed event threshold in response to the shock passage.
The greater than 10 MeV event began at 28/0430 UTC, reached a
maximum of 57 PFU at 28/0500 UTC, then ended at 28/0520 UTC. Proton
fluxes had decreased to near background levels by the close of the
period.
IIB. Previsió d'activitat geofísica
Geomagnetic field activity is
expected to be at unsettled to active levels through midday, 29
April as the disturbance gradually subsides. Quiet to unsettled
levels are expected for the remainder of the period. Region 9433
could produce another proton flare before it crosses the west limb
on 02 May. The greater than 2 MeV electron flux at geosynchronous
orbit may reach high levels during the first half of the period.
III. Probabilitats d’esdeveniments de les Apr del 29 a les May del 01
| Classe M | 75% | 75% | 75% |
| Classe X | 20% | 20% | 20% |
| Protó | 20% | 20% | 20% |
| PCAF | yellow | ||
IV. Penticton Flux de 10,7 cm
Observat 28 Apr 188 Predit 29 Apr-01 May 185/180/175 Mitjana de 90 dies 28 Apr 167
V. Índexs geomagnètics A
Observat Afr/Ap 27 Apr 003/006 Estimat Afr/Ap 28 Apr 026/028 Predit Afr/Ap 29 Apr-01 May 015/015-012/010-010/010
VI. Probabilitats d’activitat geomagnètica del 29 Apr al 01 May
| A. Latituds mitjanes | |||
|---|---|---|---|
| Actiu | 30% | 25% | 20% |
| Tempesta menor | 15% | 10% | 10% |
| Tempesta major-severa | 10% | 05% | 01% |
| B. Latituds altes | |||
|---|---|---|---|
| Actiu | 35% | 30% | 25% |
| Tempesta menor | 20% | 15% | 10% |
| Tempesta major-severa | 15% | 10% | 05% |
All times in UTC
<< Anar a la pàgina de visió general diària
Últimes notícies
dilluns, 10 de juny 2024
CME impact, X1.5 solar flare
dissabte, 8 de juny 2024
M9.3 solar flare, S3 proton storm, Earth-directed CME
dissabte, 1 de juny 2024
Double impulsive X-class flares
Últims missatges del fòrum
Més temesDona suport a SpaceWeatherLive.com!
Molta gent entra a SpaceWeatherLive per seguir l’activitat del Sol o per veure si hi han aurores, però amb més trànsit més despeses de servidor. Penseu en una donació si us agrada SpaceWeatherLive perquè puguem mantenir el lloc web en línia!
Fets del temps al espai
| Última Flamarada-X | 2024/06/10 | X1.55 |
| Última Flamarada-M | 2024/06/12 | M1.1 |
| Última tempesta geomagnètica | 2024/06/07 | Kp6 (G2) |
| Dies sense taques | |
|---|---|
| Últim dia sense taques | 2022/06/08 |
| Número mensual mitjà de taques solars | |
|---|---|
| de maig 2024 | 171.7 +35.2 |
| de juny 2024 | 165.1 -6.6 |
| Last 30 days | 152.5 -23.7 |