Viewing archive of Monday, 8 July 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 Jul 08 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 189 Issued at 2200Z on 08 Jul 2002IA. Analysis of Solar Active Regions and Activity from 07-2100Z to 08-2100Z Solar activity was moderate. An impulsive M1.6 flare
occurred at 08/0921 UTC, with SOHO/EIT imagery suggesting a
northeast limb source for this event. Lesser C- and B-class events
also occurred during the period, but without optical correlations.
Most regions on the visible disk remained little changed, or
declined in size and complexity. Two new regions were numbered:
Region 28 (S17E42) and Region 29 (S16E52). Both are small and
simply structured.
IB. Solar Activity Forecast
Solar activity is expected to be
predominantly low, with a chance for isolated, moderate-level
activity. Region 19 (S19W44) remains a possible source of isolated
M-class flares.
IIA. Geophysical Activity Summary 07-2100Z to 08-2100Z
The geomagnetic field was quiet to unsettled. The greater than 10
MeV proton event, which began at 07/1830, ended today at 08/0620
UTC. Maximum flux of 22 pfu was observed at 07/1955 UTC.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be mainly quiet to unsettled. A chance for isolated
active periods exists for the next two days.
III. Event Probabilities 09 Jul to 11 Jul
| Class M | 30% | 30% | 30% |
| Class X | 01% | 01% | 01% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 08 Jul 131 Predicted 09 Jul-11 Jul 130/130/135 90 Day Mean 08 Jul 167
V. Geomagnetic A Indices
Observed Afr/Ap 07 Jul 010/011 Estimated Afr/Ap 08 Jul 008/010 Predicted Afr/Ap 09 Jul-11 Jul 012/012-012/010-008/008
VI. Geomagnetic Activity Probabilities 09 Jul to 11 Jul
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 15% |
| Minor storm | 10% | 10% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 25% | 20% |
| Minor storm | 15% | 10% | 05% |
| Major-severe storm | 01% | 01% | 01% |
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