Viewing archive of söndag, 29 maj 2005
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 2005 May 29 2210 UTC# Prepared jointly by the U.S. Dept. of Commerce, NOAA, #Space Environment Center and the U.S. Air Force. #
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 149 publicerat klockan 2200Z på 29 May 2005IA. Analys av solfläcksgrupper och solaktivitet från 28-2100Z till 29-2100Z Solar activity was low. A C1.7 flare occurred at
28/2217 UTC which was probably produced by Region 769 (S08E59);
however, the full extent of this region is hard to determine due to
its proximity to the east limb. Region 767 (S09W31) has decayed to
200 millionths in area. New Region 770 (N12E00) was numbered today.
IB. Prognos för solaktivitet
Solar activity is expected to be very
low to low with a slight chance for an M-class event from Region
767.
IIA. Sammanfattning av geofysisk aktivitet 28-2100Z till 29-2100Z
The geomagnetic field was quiet to active. Heightened activity was
due to the arrival of the full halo CME observed on 26 May combined
with a coronal hole high speed stream. A shock was observed at ACE
at approximately 29/0900 UTC and a sudden impulse of 30 nT was
observed at 29/0953 UTC. Solar wind speed at ACE increased to 450
km/s during the initial shock and is now between 500 km/s and 550
km/s.
IIB. Prognos för geofysisk aktivitet
The geomagnetic field is
expected to be mostly quiet to unsettled with isolated active
conditions possible on 30 May. Quiet to unsettled conditions are
expected on 31 May and 01 June.
III. Chans för solutbrott från 30 May till 01 Jun
| M-klass | 10% | 10% | 10% |
| X-klass | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observerad 29 May 093 Prognoserat 30 May-01 Jun 100/100/100 90 Day Mean 29 May 092
V. Geomagnetiskt A-index
Observerad Afr/Ap 28 May 009/013 Förväntat Afr/Ap 29 May 012/015 Prognoserat Afr/Ap 30 May-01 Jun 008/010-008/008-005/008
VI. Chanser för geomagnetisk aktivitet från 30 May till 01 Jun
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 20% | 20% | 15% |
| Små stormförhållanden | 10% | 10% | 05% |
| Svåra stormförhållanden | 01% | 01% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 25% | 20% | 20% |
| Små stormförhållanden | 15% | 10% | 10% |
| Svåra stormförhållanden | 01% | 01% | 01% |
All times in UTC
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