Viewing archive of söndag, 18 maj 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 May 18 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 138 publicerat klockan 2200Z på 18 May 2003IA. Analys av solfläcksgrupper och solaktivitet från 17-2100Z till 18-2100Z Solar activity was low. Region 357 (S16W20) produced
the only C-class flare of the period - a C1 flare at 18/1057Z. This
region has shown little change over the past 24 hours, maintaining a
simple beta configuration. Region 362 (S11E37) appeared to develop
some complexity early in the period, but has since stabilized. New
Region 363 (S08W04) was numbered today.
IB. Prognos för solaktivitet
Solar activity is expected to continue
at low levels. Regions 357 and 362 have potential for low C-class
activity. Activity is expected to increase later in the week with
the return of a zone of active longitudes that contained old Regions
345 (S17, L=167), 348 (S35, L=149), and 349 (S14, L=153).
IIA. Sammanfattning av geofysisk aktivitet 17-2100Z till 18-2100Z
The geomagnetic field was quiet to unsettled. Slightly enhanced solar
wind conditions occurred late in the period and produced the
unsettled conditions. The greater than 2 MeV electrons at
geosynchronous orbit reached very high levels today.
IIB. Prognos för geofysisk aktivitet
The geomagnetic field is
expected to range from quiet to active. Increased solar wind speed,
associated with a favorably positioned coronal hole will cause
occasional disturbed periods through day two.
III. Chans för solutbrott från 19 May till 21 May
| M-klass | 10% | 10% | 10% |
| X-klass | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observerad 18 May 109 Prognoserat 19 May-21 May 115/120/130 90 Day Mean 18 May 124
V. Geomagnetiskt A-index
Observerad Afr/Ap 17 May 006/009 Förväntat Afr/Ap 18 May 007/009 Prognoserat Afr/Ap 19 May-21 May 015/015-012/012-010/010
VI. Chanser för geomagnetisk aktivitet från 19 May till 21 May
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 30% | 25% | 20% |
| Små stormförhållanden | 10% | 10% | 05% |
| Svåra stormförhållanden | 05% | 05% | 05% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 40% | 35% | 30% |
| Små stormförhållanden | 20% | 15% | 15% |
| Svåra stormförhållanden | 10% | 05% | 05% |
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