Viewing archive of Thursday, 30 January 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 Jan 30 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 30 Issued at 2200Z on 30 Jan 2014IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z Solar activity has been at high levels for the past 24 hours.
The largest solar event of the period was a M6 event observed at
30/1611Z from Region 1967 (S14E41). It also produced a Type II (2161
km/s) radio emission, a Tenflare (220 sfu) and a coronal mass ejection
which may have an Earth-directed component. Analysis is underway.
There are currently 5 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 Jan, 01 Feb, 02 Feb).
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
452 km/s at 30/0544Z. Total IMF reached 6 nT at 29/2100Z. The maximum
southward component of Bz reached -4 nT at 30/0203Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on days one, two, and three (31 Jan, 01 Feb, 02
Feb). However, the potential for a glancing blow as early as Day 2 (01
Feb) from the CME described above could push the geomagnetic field to
unsettled to active levels with a slight chance for a minor (G1) storm
period. Well refrain from adding that to this forecast until after we
have examined the WSA-Enlil model output.
III. Event Probabilities 31 Jan to 02 Feb
| Class M | 60% | 60% | 60% |
| Class X | 10% | 10% | 10% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Jan 161 Predicted 31 Jan-02 Feb 165/170/175 90 Day Mean 30 Jan 152
V. Geomagnetic A Indices
Observed Afr/Ap 29 Jan 006/006 Estimated Afr/Ap 30 Jan 007/007 Predicted Afr/Ap 31 Jan-02 Feb 005/012-006/008-006/005
VI. Geomagnetic Activity Probabilities 31 Jan to 02 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 05% | 05% | 05% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 15% | 15% | 15% |
| Major-severe storm | 05% | 05% | 05% |
All times in UTC
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