Viewing archive of Sunday, 26 February 2017
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 2017 Feb 26 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 57 Issued at 2200Z on 26 Feb 2017IA. Analysis of Solar Active Regions and Activity from 25-2100Z to 26-2100Z Solar activity has been at very low levels for the past 24
hours. There are currently 3 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
with a slight chance for a C-class flare on days one, two, and three (27
Feb, 28 Feb, 01 Mar).
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 504 km/s at 25/2234Z. Total IMF reached 5 nT at
26/2056Z. The maximum southward component of Bz reached -2 nT at
26/0038Z. Electrons greater than 2 MeV at geosynchronous orbit reached a
peak level of 956 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on day one (27 Feb), quiet to active levels on day
two (28 Feb) and unsettled to minor storm levels on day three (01 Mar).
III. Event Probabilities 27 Feb to 01 Mar
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 26 Feb 079 Predicted 27 Feb-01 Mar 079/077/077 90 Day Mean 26 Feb 077
V. Geomagnetic A Indices
Observed Afr/Ap 25 Feb 006/005 Estimated Afr/Ap 26 Feb 002/003 Predicted Afr/Ap 27 Feb-01 Mar 005/005-010/012-017/025
VI. Geomagnetic Activity Probabilities 27 Feb to 01 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 25% | 40% |
| Minor storm | 01% | 10% | 25% |
| Major-severe storm | 01% | 01% | 05% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 10% |
| Minor storm | 20% | 30% | 25% |
| Major-severe storm | 10% | 40% | 60% |
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