Viewing archive of fredag, 27 april 2001
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 2001 Apr 27 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 117 publicerat klockan 2200Z på 27 Apr 2001IA. Analys av solfläcksgrupper och solaktivitet från 26-2100Z till 27-2100Z Solar activity was moderate. Region 9433 (N18W39)
produced an M1/1f flare at 27/1915 UTC along with isolated C-class
subflares. Region 9433 began to gradually decay following
yesterday's M7/2b flare with decreased spot count and penumbral
coverage. However, a magnetic delta configuration persisted in the
trailer portion of the region, where most flare activity has
occurred. Region 9441 (N08E38) produced isolated subflares as it
gradually increased in spot count and penumbral coverage, though it
remained a moderate-sized, simply-structured spot group. New Region
9443 (S10E21), a small simple bipole, was numbered.
IB. Prognos för solaktivitet
Activity is expected to be at moderate
to high levels. Region 9433 is expected to produce mostly low-level
M-class flares. However, it may produce an isolated major flare
during the period.
IIA. Sammanfattning av geofysisk aktivitet 26-2100Z till 27-2100Z
Geomagnetic field activity was at quiet to unsettled levels. The
greater than 10 MeV electron flux became enhanced following
yesterdays M7/2b flare, but did not reach event levels.
IIB. Prognos för geofysisk aktivitet
A geomagnetic disturbance is
expected to commence during the latter half of 28 April and continue
into 29 April following yesterday's M7/2b flare and associated
full-halo CME . Active to major storm levels will be possible during
this disturbance. Mostly unsettled levels are expected during 30
April. The greater than 10 MeV proton flux could increase to event
levels on 28 April. Region 9433 may produce a proton flare during
the period.
III. Chans för solutbrott från 28 Apr till 30 Apr
| M-klass | 75% | 75% | 75% |
| X-klass | 20% | 20% | 20% |
| Proton | 20% | 20% | 20% |
| PCAF | yellow | ||
IV. Penticton 10.7 cm Flux
Observerad 27 Apr 191 Prognoserat 28 Apr-30 Apr 185/180/175 90 Day Mean 27 Apr 167
V. Geomagnetiskt A-index
Observerad Afr/Ap 26 Apr 008/007 Förväntat Afr/Ap 27 Apr 005/008 Prognoserat Afr/Ap 28 Apr-30 Apr 015/010-040/040-012/020
VI. Chanser för geomagnetisk aktivitet från 28 Apr till 30 Apr
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 25% | 30% | 40% |
| Små stormförhållanden | 20% | 35% | 20% |
| Svåra stormförhållanden | 05% | 10% | 05% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 30% | 25% | 45% |
| Små stormförhållanden | 25% | 40% | 25% |
| Svåra stormförhållanden | 10% | 15% | 10% |
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Rymdvädersfakta
| Senaste X-utbrottet | 2024/03/28 | X1.1 |
| Senaste M-utbrottet | 2024/04/27 | M3.0 |
| Senaste geomagnetiska stormen | 2024/04/26 | Kp5+ (G1) |
| Fläckfria dagar | |
|---|---|
| Senaste dag utan solfläckar | 2022/06/08 |
| Månadsvis faktiskt antal solfläckar | |
|---|---|
| mars 2024 | 104.9 -19.8 |
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