Viewing archive of Saturday, 9 March 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 Mar 09 2200 UTC
Prepared by the NOAA © SWPC and processed by SpaceWeatherLive.comJoint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 068 Issued at 2200Z on 09 Mar 2002
IA. Analysis of Solar Active Regions and Activity from 08-2100Z to 09-2100Z
Solar activity was moderate, due to the occurrence of a
long-duration M2/1f flare from Region 9866 (S10E73) at 09/1856 UTC.
This region has rotated into better view and now appears as a large
and moderately complex bipolar group (in an Eko beta-gamma
configuration, with 560 millionths areal coverage in white light).
No reports of radio sweeps or SOHO/LASCO imagery, inferring
potential CME characteristics, were received prior to the end of the
period. Today's 10.7cm noon flux reading of 208sfu was likely
enhanced due to the flare activity, so the morning reading of 184sfu
has been substituted for the daily value. Other activity included
minor C-class flares from Region 9864 (N19E43). No new regions were
numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be low
to moderate. Region 9866 is a likely source of additional, isolated
M-class activity.
IIA. Geophysical Activity Summary 08-2100Z to 09-2100Z
The geomagnetic field was quiet to unsettled. The moderate
enhancement of >2MeV electron flux at geosynchronous orbit during
the past two days appeared to wane somewhat today.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be mainly quiet to unsettled. A slight chance for
isolated active periods may exist for day three of the forecast
period, due to possible shock passage effects from today's M2 long
-duration flare event.
III. Event Probabilities 10 Mar to 12 Mar
Class M | 35% | 35% | 40% |
Class X | 01% | 01% | 01% |
Proton | 01% | 01% | 01% |
PCAF | green
|
IV. Penticton 10.7 cm Flux
Observed 09 Mar 184
Predicted 10 Mar-12 Mar 185/190/195
90 Day Mean 09 Mar 218
V. Geomagnetic A Indices
Observed Afr/Ap 08 Mar 004/004
Estimated Afr/Ap 09 Mar 006/006
Predicted Afr/Ap 10 Mar-12 Mar 005/006-005/006-008/008
VI. Geomagnetic Activity Probabilities 10 Mar to 12 Mar
A. Middle Latitudes |
Active | 10% | 10% | 15% |
Minor storm | 01% | 01% | 01% |
Major-severe storm | 01% | 01% | 01% |
B. High Latitudes |
Active | 15% | 15% | 20% |
Minor storm | 01% | 01% | 01% |
Major-severe storm | 01% | 01% | 01% |
All times in UTC
<< Go to daily overview page