Viewing archive of Thursday, 20 March 2014
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 2014 Mar 20 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 79 Issued at 2200Z on 20 Mar 2014IA. Analysis of Solar Active Regions and Activity from 19-2100Z to 20-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was an M1 event observed at
20/0356Z from Region 2010 (S15E25). There are currently 7 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for M-class flares on days one, two, and three (21 Mar, 22 Mar,
23 Mar).
IIA. Geophysical Activity Summary 19-2100Z to 20-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed,
as measured by the ACE spacecraft, reached a peak speed of 360 km/s at
20/0801Z. Total IMF reached 10 nT at 20/0820Z. The maximum southward
component of Bz reached -7 nT at 20/0908Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on days one and two (21 Mar, 22 Mar) and quiet to
unsettled levels on day three (23 Mar).
III. Event Probabilities 21 Mar to 23 Mar
| Class M | 45% | 45% | 45% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 20 Mar 151 Predicted 21 Mar-23 Mar 150/150/145 90 Day Mean 20 Mar 157
V. Geomagnetic A Indices
Observed Afr/Ap 19 Mar 002/003 Estimated Afr/Ap 20 Mar 005/005 Predicted Afr/Ap 21 Mar-23 Mar 006/005-006/005-008/008
VI. Geomagnetic Activity Probabilities 21 Mar to 23 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 10% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 15% | 15% | 20% |
| Major-severe storm | 05% | 05% | 20% |
All times in UTC
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