Viewing archive of tisdag, 27 mars 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 Mar 27 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 086 publicerat klockan 2200Z på 27 Mar 2001IA. Analys av solfläcksgrupper och solaktivitet från 26-2100Z till 27-2100Z Solar activity was moderate. Region 9401 (N22E30)
produced an impulsive M2/1N event at 27/1630Z. This event had an
associated Type II radio sweep with a speed of 500 km/s. Region
9393 (N17E11) grew significantly in area overnight and maintains a
complex beta-gamma-delta magnetic configuration; however, the region
has only produced C-class X-ray events during the period. Several
other C-class events occurred from Regions 9390 (N14W22), and 9402
(N14W11). New Region 9404 (S06E66) was numbered today.
IB. Prognos för solaktivitet
Solar activity is expected to be
moderate to high. Region 9393 has the best potential to produce a
major flare.
IIA. Sammanfattning av geofysisk aktivitet 26-2100Z till 27-2100Z
The geomagnetic field was mostly quiet to active. Two different
shocks were observed on the ACE spacecraft. The first shock
occurred at 27/0108Z with an associated sudden impulse of 27 nT on
the Boulder magnetometer at 27/0145Z. This activity was believed to
be associated with the CME back on 24 March. The second shock
occurred at 27/1718Z with an associated sudden impulse of 10 nT
observed on the Boulder magnetometer at 27/1745Z. The second shock
was believed to be associated with the halo CME on 25 March. The
greater than 10 MeV proton flux at geosynchonous orbit was enhanced
during the period, but stayed below event threshold with an observed
maximum of approximately 6 pfu.
IIB. Prognos för geofysisk aktivitet
The geomagnetic field is
expected to be predominately unsettled to minor storm conditions
with isolated major storm conditions possible during the first day
of the period. This possible increase in activity is due to the
faint full halo CME seen in LASCO/SOHO imagery on 25 March at
approximately 1700Z. The geomagnetic field is expected to return to
predominately quiet to unsettled conditions the rest of the period
with isolated active conditions possible.
III. Chans för solutbrott från 28 Mar till 30 Mar
| M-klass | 75% | 75% | 75% |
| X-klass | 20% | 20% | 20% |
| Proton | 15% | 15% | 15% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observerad 27 Mar 273 Prognoserat 28 Mar-30 Mar 235/240/240 90 Day Mean 27 Mar 161
V. Geomagnetiskt A-index
Observerad Afr/Ap 26 Mar 002/006 Förväntat Afr/Ap 27 Mar 015/015 Prognoserat Afr/Ap 28 Mar-30 Mar 020/025-015/015-008/010
VI. Chanser för geomagnetisk aktivitet från 28 Mar till 30 Mar
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 40% | 30% | 25% |
| Små stormförhållanden | 30% | 20% | 10% |
| Svåra stormförhållanden | 10% | 05% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 30% | 40% | 30% |
| Små stormförhållanden | 40% | 25% | 15% |
| Svåra stormförhållanden | 20% | 10% | 05% |
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