Viewing archive of fredag, 18 april 2003
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 2003 Apr 18 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 108 publicerat klockan 2200Z på 18 Apr 2003IA. Analys av solfläcksgrupper och solaktivitet från 17-2100Z till 18-2100Z Solar activity has been at moderate levels. There were
several minor C-class events during the last 24 hours with a single
M1.1 from Region 337 (S12E74) at 1958 UTC. A 13 degree disappearing
solar filament was observed early in the period near Region 335
(S25E21). There was a small coronal mass ejection associated with
that filament, but it was not earth-directed.
IB. Prognos för solaktivitet
Solar activity is expected to be at
low to moderate levels for the entire period. Region 337 (S12E74)
is just coming on to the visible disk, and appears in solar x-ray
imagery to be a potentially active region.
IIA. Sammanfattning av geofysisk aktivitet 17-2100Z till 18-2100Z
The geomagnetic field was at unsettled to active levels with an
isolated quiet period from 0300 UTC to 0600 UTC. The coronal hole
induced high speed solar wind stream continues. The greater than 2
MeV electron fluxes at geo-synchronous orbit reached high levels
today.
IIB. Prognos för geofysisk aktivitet
The geomagnetic field is
expected to be at mostly unsettled levels as the current disturbance
continues to transition out of geoeffective range. Continued
unsettled levels are expected through day two, with a further
decrease to mostly quiet levels on day three.
III. Chans för solutbrott från 19 Apr till 21 Apr
| M-klass | 05% | 05% | 05% |
| X-klass | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observerad 18 Apr 108 Prognoserat 19 Apr-21 Apr 110/110/115 90 Day Mean 18 Apr 127
V. Geomagnetiskt A-index
Observerad Afr/Ap 17 Apr 020/030 Förväntat Afr/Ap 18 Apr 018/019 Prognoserat Afr/Ap 19 Apr-21 Apr 012/015-010/012-007/010
VI. Chanser för geomagnetisk aktivitet från 19 Apr till 21 Apr
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 35% | 30% | 30% |
| Små stormförhållanden | 25% | 15% | 15% |
| Svåra stormförhållanden | 05% | 05% | 05% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 35% | 30% | 30% |
| Små stormförhållanden | 30% | 25% | 20% |
| Svåra stormförhållanden | 20% | 10% | 10% |
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Rymdvädersfakta
| Senaste X-utbrottet | 2024/03/28 | X1.1 |
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| Fläckfria dagar | |
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