Viewing archive of Wednesday, 30 June 2021
Solar activity report
Report of Solar-Geophysical Activity 2021 Jun 30 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 181 Issued at 2200Z on 30 Jun 2021IA. Analysis of Solar Active Regions and Activity from 29-2100Z to 30-2100Z Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C3 event observed at
30/1815Z from Region 2835 (S18W01). There are currently 3 numbered
sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is likely to be low with a
slight chance for an M-class flare on days one, two, and three (01 Jul,
02 Jul, 03 Jul).
IIA. Geophysical Activity Summary 29-2100Z to 30-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed reached a peak of 521 km/s at 30/2058Z. Total IMF reached 10
nT at 30/2043Z. The maximum southward component of Bz reached -10 nT at
30/1721Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 251 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (01 Jul) and quiet to
unsettled levels on days two and three (02 Jul, 03 Jul).
III. Event Probabilities 01 Jul to 03 Jul
| Class M | 15% | 15% | 15% |
| Class X | 01% | 01% | 01% |
| Proton | 05% | 05% | 05% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 30 Jun 094 Predicted 01 Jul-03 Jul 094/094/094 90 Day Mean 30 Jun 077
V. Geomagnetic A Indices
Observed Afr/Ap 29 Jun 005/005 Estimated Afr/Ap 30 Jun 010/012 Predicted Afr/Ap 01 Jul-03 Jul 010/012-008/008-009/012
VI. Geomagnetic Activity Probabilities 01 Jul to 03 Jul
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 20% | 25% |
| Minor storm | 10% | 05% | 10% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 15% |
| Minor storm | 30% | 25% | 30% |
| Major-severe storm | 45% | 25% | 40% |
All times in UTC
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