Viewing archive of Friday, 19 March 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 Mar 19 2201 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 078 Issued at 2200Z on 19 Mar 2010IA. Analysis of Solar Active Regions and Activity from 18-2100Z to 19-2100Z Solar activity was very low. Region 1054 (N16W69)
produced the largest event of the period, a B7/sf flare, at
18/2308Z. An associated Type II radio sweep was observed by Palehua
and Learmonth radio observatories at 18/2311Z. Palehua reported a
speed of 776km/s. SOHO LASCO C2 depicted a weak, west limb CME.
Region 1056 (N18E22) remains stable and quiet.
IB. Solar Activity Forecast
Solar activity is expected to remain
very low with only a slight chance for a C-class flare within the
next 3 days (20-22 March).
IIA. Geophysical Activity Summary 18-2100Z to 19-2100Z
The geomagnetic field was quiet.
IIB. Geophysical Activity Forecast
The geomagnetic field is
expected to be quiet for the next 3 days (20-22 March).
III. Event Probabilities 20 Mar to 22 Mar
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 19 Mar 084 Predicted 20 Mar-22 Mar 084/084/084 90 Day Mean 19 Mar 081
V. Geomagnetic A Indices
Observed Afr/Ap 18 Mar 004/005 Estimated Afr/Ap 19 Mar 003/005 Predicted Afr/Ap 20 Mar-22 Mar 005/005-005/005-005/005
VI. Geomagnetic Activity Probabilities 20 Mar to 22 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 05% | 05% | 05% |
| Major-severe storm | 01% | 01% | 01% |
All times in UTC
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