Viewing archive of Sunday, 26 July 2020
Solar activity report
Report of Solar-Geophysical Activity 2020 Jul 26 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 208 Issued at 2200Z on 26 Jul 2020IA. 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 is currently 1 numbered sunspot region on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
on days one, two, and three (27 Jul, 28 Jul, 29 Jul).
IIA. Geophysical Activity Summary 25-2100Z to 26-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed reached a peak of 421 km/s at 26/0334Z. Total IMF reached 9
nT at 25/2135Z. The maximum southward component of Bz reached -8 nT at
25/2127Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 260 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet levels on day one (27 Jul) and quiet to unsettled levels
on days two and three (28 Jul, 29 Jul).
III. Event Probabilities 27 Jul to 29 Jul
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 26 Jul 071 Predicted 27 Jul-29 Jul 070/070/070 90 Day Mean 26 Jul 069
V. Geomagnetic A Indices
Observed Afr/Ap 25 Jul 027/010 Estimated Afr/Ap 26 Jul 004/004 Predicted Afr/Ap 27 Jul-29 Jul 006/005-007/008-007/008
VI. Geomagnetic Activity Probabilities 27 Jul to 29 Jul
| 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% | 25% | 25% |
| Major-severe storm | 10% | 20% | 20% |
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