Viewing archive of Monday, 20 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 20 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 20 Issued at 2200Z on 20 Jan 2014IA. Analysis of Solar Active Regions and Activity from 19-2100Z to 20-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C3 event observed at
20/0220Z from Region 1959 (S24E44). There are currently 9 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 Jan, 22 Jan,
23 Jan).
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 345 km/s at
20/2035Z. Total IMF reached 5 nT at 20/1747Z. The maximum southward
component of Bz reached -4 nT at 20/0610Z. Electrons greater than 2 MeV
at geosynchronous orbit reached a peak level of 193 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on day one (21 Jan) and quiet levels
on days two and three (22 Jan, 23 Jan).
III. Event Probabilities 21 Jan to 23 Jan
| Class M | 30% | 30% | 30% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 20 Jan 137 Predicted 21 Jan-23 Jan 135/135/135 90 Day Mean 20 Jan 153
V. Geomagnetic A Indices
Observed Afr/Ap 19 Jan 002/001 Estimated Afr/Ap 20 Jan 003/004 Predicted Afr/Ap 21 Jan-23 Jan 007/008-005/005-006/005
VI. Geomagnetic Activity Probabilities 21 Jan to 23 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 15% | 05% | 05% |
| Minor storm | 05% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 25% | 15% | 15% |
| Major-severe storm | 25% | 05% | 05% |
All times in UTC
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| Last M-flare | 2024/11/20 | M1.1 |
| Last geomagnetic storm | 2024/11/10 | Kp5+ (G1) |
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