Het archief bekijken van vrijdag 27 april 2001
Activiteitenrapport
Rapport van de zonne- en geofysische activiteit van 2001 Apr 27 2200 UTCOpgemaakt door de NOAA © SWPC en verwerkt door Poollicht.be
USAF/NOAA rapport van de zonneactiviteit en geofysische activiteit
SDF Nummer 117 gepubliceerd omstreeks 2200Z op 27 Apr 2001IA. Analyse van de actieve zonneregio's en zonneactiviteit van 26-2100Z tot 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. Voorspelling zonneactiviteit
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. Samenvatting geofysische activiteit 26-2100Z tot 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. Voorspelling geofysische activiteit
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. Kans zonnevlammen van 28 Apr tot 30 Apr
| Klasse M | 75% | 75% | 75% |
| Klasse X | 20% | 20% | 20% |
| Proton | 20% | 20% | 20% |
| PCAF | yellow | ||
IV. Penticton 10.7 cm Flux
Geobserveerd 27 Apr 191 Voorspeld 28 Apr-30 Apr 185/180/175 90 Day Mean 27 Apr 167
V. Geomagnetische A index
Geobserveerd Afr/Ap 26 Apr 008/007 Verwacht Afr/Ap 27 Apr 005/008 Voorspeld Afr/Ap 28 Apr-30 Apr 015/010-040/040-012/020
VI. Kansen geomagnetische activiteit van 28 Apr tot 30 Apr
| A. Gemiddelde breedtegraad | |||
|---|---|---|---|
| Actief | 25% | 30% | 40% |
| Kleine stormcondities | 20% | 35% | 20% |
| Zware-ernstige stormcondities | 05% | 10% | 05% |
| B. Hoge breedtegraad | |||
|---|---|---|---|
| Actief | 30% | 25% | 45% |
| Kleine stormcondities | 25% | 40% | 25% |
| Zware-ernstige stormcondities | 10% | 15% | 10% |
Laatste nieuws
zondag 11 juli 2021 - 16:39 UTC
Coronal hole faces Earth
zaterdag 03 juli 2021 - 15:03 UTC
First X-class solar flare of Solar Cycle 25
maandag 24 mei 2021 - 13:57 UTC
M flares, G2 geomagnetic storm watch
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