Viewing archive of Wednesday, 16 January 2002
Solar activity report
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.
Report of Solar-Geophysical Activity 2002 Jan 16 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 016 Issued at 2200Z on 16 Jan 2002IA. Analysis of Solar Active Regions and Activity from 15-2100Z to 16-2100Z Solar activity remained at moderate levels. Region 9775
(S06W86) produced an M1/Sf flare at 16/1013 UTC as well as
occasional C-class subflares. No significant changes were observed
in this region as it began to cross the west limb. Region 9773
(N16W93) produced an isolated C-class subflare as it crossed the
west limb early in the period. Region 9782 (N06E05) showed a minor
increase in area, but appeared to simplify due to the loss of a
delta magnetic configuration in the southern portion of its leader
spots. New Region 9786 (S26E07) was numbered.
IB. Solar Activity Forecast
Solar activity is expected to be at
low to moderate levels. An isolated M-class flare will be possible
from Region 9775 as it continues to rotate out of view. There will
also be a chance for an M-class flare from Region 9782.
IIA. Geophysical Activity Summary 15-2100Z to 16-2100Z
Geomagnetic field activity was at mostly quiet levels. The greater
than 10 MeV proton event that began at 15/1435 UTC ended at 16/1205
UTC. The maximum for this event was 15 PFU at 15/2000 UTC. The
greater than 2 MeV electron flux briefly reached high levels during
the latter half of the period.
IIB. Geophysical Activity Forecast
Geomagnetic field activity is
expected to be at quiet to unsettled levels. There will be a slight
chance for a proton flare during the period. The greater than 2 MeV
electron flux is expected to decrease to normal to moderate levels.
III. Event Probabilities 17 Jan to 19 Jan
| Class M | 70% | 60% | 60% |
| Class X | 10% | 10% | 10% |
| Proton | 10% | 10% | 10% |
| PCAF | yellow | ||
IV. Penticton 10.7 cm Flux
Observed 16 Jan 216 Predicted 17 Jan-19 Jan 215/220/220 90 Day Mean 16 Jan 224
V. Geomagnetic A Indices
Observed Afr/Ap 15 Jan 004/006 Estimated Afr/Ap 16 Jan 005/005 Predicted Afr/Ap 17 Jan-19 Jan 008/010-008/008-008/008
VI. Geomagnetic Activity Probabilities 17 Jan to 19 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 20% | 20% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 01% | 01% | 01% |
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