Viewing archive of Saturday, 25 July 2020
Solar activity report
Report of Solar-Geophysical Activity 2020 Jul 25 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 207 Issued at 2200Z on 25 Jul 2020IA. Analysis of Solar Active Regions and Activity from 24-2100Z to 25-2100Z 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 (26 Jul, 27 Jul, 28 Jul).
IIA. Geophysical Activity Summary 24-2100Z to 25-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed reached a peak of 394 km/s at 25/2032Z. Total IMF reached 10
nT at 24/2335Z. The maximum southward component of Bz reached -9 nT at
24/2249Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 353 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one and three (26 Jul, 28
Jul) and quiet levels on day two (27 Jul).
III. Event Probabilities 26 Jul to 28 Jul
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 25 Jul 070 Predicted 26 Jul-28 Jul 070/070/070 90 Day Mean 25 Jul 069
V. Geomagnetic A Indices
Observed Afr/Ap 24 Jul NA/012 Estimated Afr/Ap 25 Jul 011/012 Predicted Afr/Ap 26 Jul-28 Jul 008/008-006/005-007/008
VI. Geomagnetic Activity Probabilities 26 Jul to 28 Jul
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 10% | 10% | 10% |
| Minor storm | 01% | 01% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 20% | 15% |
| Minor storm | 25% | 20% | 25% |
| Major-severe storm | 20% | 10% | 20% |
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