Viewing archive of Sunday, 11 February 2018
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 2018 Feb 11 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 42 Issued at 2200Z on 11 Feb 2018IA. Analysis of Solar Active Regions and Activity from 10-2100Z to 11-2100Z
Solar activity has been at very low levels for the past 24
hours. There are currently 1 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
with a chance for a C-class flares and a slight chance for an M-class
flare on days one, two, and three (12 Feb, 13 Feb, 14 Feb).
IIA. Geophysical Activity Summary 10-2100Z to 11-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 527 km/s at 11/0048Z. Total IMF reached 6 nT at
10/2340Z. The maximum southward component of Bz reached -2 nT at
11/1200Z.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on days one, two, and three (12 Feb, 13 Feb, 14
Feb).
III. Event Probabilities 12 Feb to 14 Feb
| Class M | 15% | 15% | 15% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 11 Feb 078 Predicted 12 Feb-14 Feb 078/078/078 90 Day Mean 11 Feb 072
V. Geomagnetic A Indices
Observed Afr/Ap 10 Feb 007/006 Estimated Afr/Ap 11 Feb 003/003 Predicted Afr/Ap 12 Feb-14 Feb 006/005-006/005-006/005
VI. Geomagnetic Activity Probabilities 12 Feb to 14 Feb
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| 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 | 10% | 10% | 10% |
All times in UTC
Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future
Oulu, Rovaniemi, SodankyläTrondheim
Arkhangelsk, Vorkuta
Luleå, Umeå
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