Viewing archive of Sunday, 30 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 30 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 89 Issued at 2200Z on 30 Mar 2014IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z Solar activity has been at moderate levels for the past 24
hours. The largest solar event of the period was a M2 event observed at
30/1155Z from Region 2017 (N10W49). There are currently 8 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be moderate
with a slight chance for an X-class flare on days one, two, and three
(31 Mar, 01 Apr, 02 Apr).
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed, as measured by the ACE spacecraft, reached a peak speed of
480 km/s at 30/0434Z. Total IMF reached 5 nT at 29/2220Z. The maximum
southward component of Bz reached -3 nT at 29/2121Z. Protons greater
than 10 MeV at geosynchronous orbit reached a peak level of 3 pfu at
29/2230Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on day one (31 Mar), quiet to active levels on day
two (01 Apr) and unsettled to minor storm levels on day three (02 Apr).
Protons have a slight chance of crossing threshold on days one, two, and
three (31 Mar, 01 Apr, 02 Apr).
III. Event Probabilities 31 Mar to 02 Apr
| Class M | 55% | 55% | 55% |
| Class X | 20% | 20% | 20% |
| Proton | 10% | 10% | 10% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Mar 148 Predicted 31 Mar-02 Apr 145/145/140 90 Day Mean 30 Mar 159
V. Geomagnetic A Indices
Observed Afr/Ap 29 Mar 009/007 Estimated Afr/Ap 30 Mar 005/006 Predicted Afr/Ap 31 Mar-02 Apr 006/005-010/012-020/028
VI. Geomagnetic Activity Probabilities 31 Mar to 02 Apr
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 30% | 40% |
| Minor storm | 01% | 05% | 25% |
| Major-severe storm | 01% | 01% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 10% |
| Minor storm | 15% | 30% | 25% |
| Major-severe storm | 05% | 35% | 60% |
All times in UTC
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