Viewing archive of Friday, 19 June 2026
Solar activity report
Report of Solar-Geophysical Activity 2026 Jun 19 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 170 Issued at 2200Z on 19 Jun 2026IA. Analysis of Solar Active Regions and Activity from 18-2100Z to 19-2100Z Solar activity has been at low levels for the past 24 hours.
There are currently 4 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be low with
a slight chance for an M-class flare on days one, two, and three (20
Jun, 21 Jun, 22 Jun).
IIA. Geophysical Activity Summary 18-2100Z to 19-2100Z
The geomagnetic
field has been at quiet to unsettled levels for the past 24 hours. Solar
wind speed reached a peak of 461 km/s at 19/1853Z. Total IMF reached 10
nT at 19/1517Z. The maximum southward component of Bz reached -7 nT at
18/2220Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 617 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to active levels on day one (20 Jun), quiet to unsettled
levels on day two (21 Jun) and quiet levels on day three (22 Jun).
III. Event Probabilities 20 Jun to 22 Jun
| Class M | 15% | 15% | 15% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 19 Jun 111 Predicted 20 Jun-22 Jun 112/115/120 90 Day Mean 19 Jun 126
V. Geomagnetic A Indices
Observed Afr/Ap 18 Jun 007/006 Estimated Afr/Ap 19 Jun 008/010 Predicted Afr/Ap 20 Jun-22 Jun 011/012-010/010-006/005
VI. Geomagnetic Activity Probabilities 20 Jun to 22 Jun
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 20% | 10% |
| Minor storm | 15% | 05% | 01% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 20% | 15% |
| Minor storm | 25% | 25% | 20% |
| Major-severe storm | 40% | 25% | 10% |
All times in UTC
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Space weather facts
| Last X-flare | 2026/06/03 | X1.0 |
| Last M-flare | 2026/06/20 | M1.0 |
| Last geomagnetic storm | 2026/06/11 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last 365 days | 3 days |
| 2026 | 3 days (2%) |
| Last spotless day | 2026/02/24 |
| Monthly mean Sunspot Number | |
|---|---|
| May 2026 | 101.4 +22.1 |
| June 2026 | 102.1 +0.7 |
| Last 30 days | 107.9 +9.7 |
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