Viewing archive of Tuesday, 13 January 2015
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 2015 Jan 13 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 13 Issued at 2200Z on 13 Jan 2015IA. Analysis of Solar Active Regions and Activity from 12-2100Z to 13-2100Z Solar activity has been at high levels for the past 24 hours.
The largest solar event of the period was a M5 event observed at
13/0424Z from Region 2257 (N07W81). There are currently 6 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a chance for M-class flares and a slight chance for an X-class flare on
day one (14 Jan) and expected to be low with a chance for M-class flares
on days two and three (15 Jan, 16 Jan).
IIA. Geophysical Activity Summary 12-2100Z to 13-2100Z
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
479 km/s at 13/1312Z. Total IMF reached 8 nT at 13/0351Z. The maximum
southward component of Bz reached -6 nT at 13/1107Z. Electrons greater
than 2 MeV at geosynchronous orbit reached a peak level of 224 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on day one (14 Jan), quiet to active levels on day
two (15 Jan) and quiet to unsettled levels on day three (16 Jan).
III. Event Probabilities 14 Jan to 16 Jan
| Class M | 45% | 40% | 35% |
| Class X | 10% | 05% | 05% |
| Proton | 05% | 05% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 13 Jan 145 Predicted 14 Jan-16 Jan 145/140/140 90 Day Mean 13 Jan 160
V. Geomagnetic A Indices
Observed Afr/Ap 12 Jan 007/006 Estimated Afr/Ap 13 Jan 008/008 Predicted Afr/Ap 14 Jan-16 Jan 006/005-011/012-009/010
VI. Geomagnetic Activity Probabilities 14 Jan to 16 Jan
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 30% | 20% |
| Minor storm | 01% | 15% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 20% | 30% | 25% |
| Major-severe storm | 10% | 40% | 30% |
All times in UTC
Latest news
Monday, 11 November 2024
Coronal hole faces Earth
Friday, 1 November 2024
X2.0 solar flare
Wednesday, 9 October 2024
X1.8 solar flare, severe geomagnetic storm watch
Latest forum messages
AR13883 2024/11/04 CME 45sun goes blank 72Space Weather Memes 566Incoming & Unnumbered Active Regions 1209AR13889 143
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!
Space weather facts
| Last X-flare | 2024/11/06 | X2.39 |
| Last M-flare | 2024/11/13 | M1.7 |
| Last geomagnetic storm | 2024/11/10 | Kp5+ (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| October 2024 | 166.4 +25 |
| November 2024 | 166 -0.4 |
| Last 30 days | 163.2 +18.4 |