Viewing archive of Monday, 6 September 2004
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 2004 Sep 06 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 250 Issued at 2200Z on 06 Sep 2004IA. Analysis of Solar Active Regions and Activity from 05-2100Z to 06-2100Z Solar activity was very low. Today's activity consisted
of a few B-class flares, mostly from Region 667 (S11E09). New Region
671 (S10W29) emerged on the disk today and is a small, D-type group.
IB. Solar Activity Forecast
Solar activity is expected to be very
low to low. Regions 667, 669 (S07E19), and 671 have the potential
for producing isolated C-class events during the next three days
(07-09 September).
IIA. Geophysical Activity Summary 05-2100Z to 06-2100Z
The geomagnetic field was mostly quiet to unsettled during the past
24 hours. There was one active period from 0900-1200 UTC. Solar wind
data indicate a small increase in speed during the past 24 hours,
and the interplanetary magnetic field component Bz is fluctuating
between +6 and -6 nT. These signatures are suggestive of a weak
coronal hole wind stream.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be predominantly unsettled for the next three days
(07-09 September).
III. Event Probabilities 07 Sep to 09 Sep
| Class M | 05% | 05% | 05% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 06 Sep 107 Predicted 07 Sep-09 Sep 110/110/115 90 Day Mean 06 Sep 110
V. Geomagnetic A Indices
Observed Afr/Ap 05 Sep 005/007 Estimated Afr/Ap 06 Sep 012/015 Predicted Afr/Ap 07 Sep-09 Sep 010/012-008/010-008/010
VI. Geomagnetic Activity Probabilities 07 Sep to 09 Sep
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 30% | 30% |
| Minor storm | 15% | 15% | 15% |
| Major-severe storm | 05% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 30% | 30% | 30% |
| Minor storm | 20% | 15% | 15% |
| Major-severe storm | 05% | 05% | 05% |
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