Viewing archive of Wednesday, 28 March 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 Mar 28 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 87 Issued at 2200Z on 28 Mar 2018IA. Analysis of Solar Active Regions and Activity from 27-2100Z to 28-2100Z
Solar activity has been at very low levels for the past 24
hours. There are currently 0 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
on days one, two, and three (29 Mar, 30 Mar, 31 Mar).
IIA. Geophysical Activity Summary 27-2100Z to 28-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 509 km/s at 27/2101Z. Electrons greater than 2 MeV at
geosynchronous orbit reached a peak level of 42064 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on days one and two (29 Mar, 30 Mar) and
quiet to unsettled levels on day three (31 Mar).
III. Event Probabilities 29 Mar to 31 Mar
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 28 Mar 069 Predicted 29 Mar-31 Mar 069/070/070 90 Day Mean 28 Mar 070
V. Geomagnetic A Indices
Observed Afr/Ap 27 Mar 007/008 Estimated Afr/Ap 28 Mar 003/004 Predicted Afr/Ap 29 Mar-31 Mar 013/015-011/012-007/008
VI. Geomagnetic Activity Probabilities 29 Mar to 31 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 30% | 15% |
| Minor storm | 15% | 10% | 05% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 20% |
| Minor storm | 30% | 30% | 25% |
| Major-severe storm | 40% | 35% | 20% |
All times in UTC
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