Viewing archive of torsdag, 20 december 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 Dec 20 2200 UTCSkapad av NOAA © SWPC och bearbetad av SpaceWeatherLive.com
USAF/NOAA rapport för sol- och geofysisk aktivitet
SDF Nummer 354 publicerat klockan 2200Z på 20 Dec 2001IA. Analys av solfläcksgrupper och solaktivitet från 19-2100Z till 20-2100Z Solar activity was low. Region 9742 (N10E13) produced
several C-class events including a C8 flare at 20/0438Z. This region
exhibited impressive flux emergence and spot growth this period,
almost doubling in size and spot count. Most growth was concentrated
in the trailer portions of the region, but mixed polarities were
obvious throughout the spot group. Regions 9741 (N05W21) and 9747
(N12E58) produced occasional minor C-class flares. Moderately
complex Regions 9733 (N12W88) and 9739 (S14W90) are rotating quietly
around the west limb. A large prominence eruption and associated CME
occurred on the SE limb between 19/2344 - 20/0028Z. New Regions 9748
(S11E36), and 9749 (S08E72) were numbered today.
IB. Prognos för solaktivitet
Solar activity is expected to be at
moderate levels. Region 9742 holds good potential for M-class
activity and is developing potential for a major flare.
IIA. Sammanfattning av geofysisk aktivitet 19-2100Z till 20-2100Z
The geomagnetic field was quiet.
IIB. Prognos för geofysisk aktivitet
The geomagnetic field is
expected to be quiet to unsettled. Periods of unsettled conditions
are likely on days two and three as a large southern coronal hole
moves into a geoeffectively favorable position.
III. Chans för solutbrott från 21 Dec till 23 Dec
| M-klass | 60% | 60% | 60% |
| X-klass | 10% | 10% | 10% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observerad 20 Dec 221 Prognoserat 21 Dec-23 Dec 215/215/215 90 Day Mean 20 Dec 218
V. Geomagnetiskt A-index
Observerad Afr/Ap 19 Dec 005/009 Förväntat Afr/Ap 20 Dec 005/006 Prognoserat Afr/Ap 21 Dec-23 Dec 008/008-008/008-010/008
VI. Chanser för geomagnetisk aktivitet från 21 Dec till 23 Dec
| A. Medelhöga breddgrader | |||
|---|---|---|---|
| Aktivt | 20% | 20% | 25% |
| Små stormförhållanden | 05% | 05% | 05% |
| Svåra stormförhållanden | 01% | 01% | 01% |
| B. Höga breddgrader | |||
|---|---|---|---|
| Aktivt | 20% | 25% | 25% |
| Små stormförhållanden | 05% | 05% | 05% |
| Svåra stormförhållanden | 01% | 01% | 01% |
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