Viewing archive of Tuesday, 26 September 2006
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 2006 Sep 26 2204 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 269 Issued at 2200Z on 26 Sep 2006IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z Solar activity was very low. New Region 911 (N08E73)
was numbered today. A CME was observed on the LASCO coronagraph at
26/0131Z. This slow moving CME was apparently from behind the east
limb and is not predicted to be geoeffective.
IB. Solar Activity Forecast
Solar activity is expected to be very
low.
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
The geomagnetic field was predominately quiet to unsettled with an
isolated active period at mid-latitudes. Solar wind speed remains
elevated (currently 500 km/s) due to a coronal hole high speed
stream. The greater than 2 MeV electron flux reached high levels
again today.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet to unsettled 27 - 29 September.
III. Event Probabilities 27 Sep to 29 Sep
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 26 Sep 071 Predicted 27 Sep-29 Sep 070/070/070 90 Day Mean 26 Sep 077
V. Geomagnetic A Indices
Observed Afr/Ap 25 Sep 006/006 Estimated Afr/Ap 26 Sep 006/008 Predicted Afr/Ap 27 Sep-29 Sep 006/008-006/010-008/008
VI. Geomagnetic Activity Probabilities 27 Sep to 29 Sep
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 10% | 10% | 10% |
| Major-severe storm | 05% | 05% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 25% | 25% | 25% |
| Minor storm | 15% | 15% | 15% |
| Major-severe storm | 05% | 05% | 05% |
All times in UTC
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