Viewing archive of Thursday, 16 September 2010
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 2010 Sep 16 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 259 Issued at 2200Z on 16 Sep 2010IA. Analysis of Solar Active Regions and Activity from 15-2100Z to 16-2100Z Solar activity has been very low. New Region 1108
(S29E69) was numbered today and produced multiple B-class events.
Currently the region is classified as an Cko-type group with an area
of 290 millionths although the region is still rotating around the
southeast limb.
IB. Solar Activity Forecast
Solar activity is expected to be low,
as C-class events are likely for the next three days (17-19
September). There is a slight chance for an isolated M-class event
from Region 1108.
IIA. Geophysical Activity Summary 15-2100Z to 16-2100Z
The geomagnetic field has been quiet to unsettled with isolated
active periods observed at some high-latitude locations.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be predominately quiet to unsettled with a slight chance
for an isolated active period on day one (17 September). Days two
and three (18-19 September) are expected to be quiet.
III. Event Probabilities 17 Sep to 19 Sep
| Class M | 10% | 10% | 10% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 16 Sep 083 Predicted 17 Sep-19 Sep 085/086/086 90 Day Mean 16 Sep 079
V. Geomagnetic A Indices
Observed Afr/Ap 15 Sep 004/007 Estimated Afr/Ap 16 Sep 006/008 Predicted Afr/Ap 17 Sep-19 Sep 006/008-005/005-005/005
VI. Geomagnetic Activity Probabilities 17 Sep to 19 Sep
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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