Viewing archive of Sunday, 7 April 2019
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 2019 Apr 07 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 97 Issued at 2200Z on 07 Apr 2019IA. Analysis of Solar Active Regions and Activity from 06-2100Z to 07-2100Z 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
on days one, two, and three (08 Apr, 09 Apr, 10 Apr).
IIA. Geophysical Activity Summary 06-2100Z to 07-2100Z
The geomagnetic
field has been at quiet levels for the past 24 hours. Solar wind speed
reached a peak of 481 km/s at 07/0355Z. Electrons greater than 2 MeV at
geosynchronous orbit reached a peak level of 21832 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on days one, two, and three (08 Apr, 09 Apr, 10
Apr).
III. Event Probabilities 08 Apr to 10 Apr
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 07 Apr 077 Predicted 08 Apr-10 Apr 077/077/074 90 Day Mean 07 Apr 071
V. Geomagnetic A Indices
Observed Afr/Ap 06 Apr 007/008 Estimated Afr/Ap 07 Apr 010/010 Predicted Afr/Ap 08 Apr-10 Apr 005/005-006/005-005/005
VI. Geomagnetic Activity Probabilities 08 Apr to 10 Apr
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 20% | 15% | 15% |
| Minor storm | 20% | 15% | 15% |
| Major-severe storm | 10% | 15% | 15% |
All times in UTC
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