Viewing archive of Monday, 30 December 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 Dec 30 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 364 Issued at 2200Z on 30 Dec 2002IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z Solar activity decreased to very low levels. Activity
was limited to several very minor low level B-class flares. At the
time of this writing there are three regions exhibiting spots in
white light, all of them small and simply structured. No new
regions were numbered today.
IB. Solar Activity Forecast
Solar activity is expected to be at
very low to low levels.
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
The geomagnetic field was at quiet to active levels. Active
conditions were the result of a favorably positioned coronal hole
that is in it's waning stage. The greater than 2 MeV electron flux
at geosynchronous orbit reached high levels today.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at quiet to unsettled levels. Isolated active
conditions are possible on day one due to the elevated solar wind
speed (approximately 500 km/sec).
III. Event Probabilities 31 Dec to 02 Jan
| Class M | 10% | 10% | 10% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Dec 114 Predicted 31 Dec-02 Jan 115/115/115 90 Day Mean 30 Dec 165
V. Geomagnetic A Indices
Observed Afr/Ap 29 Dec 008/013 Estimated Afr/Ap 30 Dec 012/013 Predicted Afr/Ap 31 Dec-02 Jan 008/010-005/010-008/012
VI. Geomagnetic Activity Probabilities 31 Dec to 02 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 15% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 20% | 20% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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