Viewing archive of Friday, 19 November 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 Nov 19 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 323 Issued at 2200Z on 19 Nov 2010IA. Analysis of Solar Active Regions and Activity from 18-2100Z to 19-2100Z Solar activity has been at very low levels for the past
24 hours. All three visible active regions remained stable and
quiet. A filament disappeared near N30E41 at 18/1721Z. A
slow-moving, CME was detected at 18/2224Z by SOHO LASCO c2 imagery
and did not appear to be earth directed.
IB. Solar Activity Forecast
Solar activity is expected to be at
very low levels for the next three days (20-22 November).
IIA. Geophysical Activity Summary 18-2100Z to 19-2100Z
The geomagnetic field has been at quiet levels for the past 24 hours.
Observations from the ACE spacecraft showed solar wind speeds
decreasing throughout the period, from 550km/s to 350 km/s, as the
effects of a coronal hole high-speed stream wane. The greater than 2
MeV electron flux at geosynchronous orbit reached high levels during
the period.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be at quiet levels for the next three days (20-22
November).
III. Event Probabilities 20 Nov to 22 Nov
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | Green | ||
IV. Penticton 10.7 cm Flux
Observed 19 Nov 084 Predicted 20 Nov-22 Nov 084/084/082 90 Day Mean 19 Nov 081
V. Geomagnetic A Indices
Observed Afr/Ap 18 Nov 004/005 Estimated Afr/Ap 19 Nov 003/004 Predicted Afr/Ap 20 Nov-22 Nov 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 20 Nov to 22 Nov
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
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