| Begin | Max | End | Xray | Region | |
|---|---|---|---|---|---|
| Thursday, June 10 | 04:32 | 04:37 | 04:57 | B2.6 | 2830 |
| 05:59 | 06:42 | 06:57 | C1.1 | ⎯ | |
| 09:02 | 09:08 | 09:19 | B4.5 | 2831 | |
| Friday, June 11 | 07:58 | 08:02 | 08:06 | B2.1 | ⎯ |
| 21:55 | 22:02 | 22:06 | B1.4 | 2832 | |
| Saturday, June 12 | 00:37 | 00:47 | 00:52 | B1.5 | ⎯ |
| 01:24 | 01:33 | 01:45 | B2.4 | ⎯ | |
| 02:41 | 02:44 | 02:48 | B1.4 | ⎯ |
Solar activity
UTC
Saturday, June 12th 2021, 22:15:00 UTC
Regions with Sunspots
- 2832
Analysis of Solar Active Regions and Activity from 11/2100Z to 12/2100Z
Solar activity has been at very low levels for the past 24 hours. There are currently 0 numbered sunspot regions on the disk.
Solar Activity Forecast
Solar activity is expected to be very low on days one, two, and three (13 Jun, 14 Jun, 15 Jun).
| 24 hr | 48 hr | 72 hr | |
|---|---|---|---|
| Class M | 01 % | 01 % | 01 % |
| Class X | 01 % | 01 % | 01 % |
| Proton | 01 % | 01 % | 01 % |
PCAF: green
Geophysical Activity Summary 11/2100Z to 12/2100Z
The geomagnetic field has been at quiet to active levels for the past 24 hours. Solar wind speed reached a peak of 467 km/s at 12/2100Z. Total IMF reached 9 nT at 12/0624Z. The maximum southward component of Bz reached -7 nT at 12/0114Z. Electrons greater than 2 MeV at geosynchronous orbit reached a peak level of 112 pfu.
Geophysical Activity Forecast
The geomagnetic field is expected to be at quiet to unsettled levels on days one and three (13 Jun, 15 Jun) and quiet levels on day two (14 Jun).
Geomagnetic Activity Probabilities 13 Jun-15 Jun
| 24 hr | 48 hr | 72 hr | |
|---|---|---|---|
| Active | 15 % | 10 % | 25 % |
| Minor Storm | 05 % | 01 % | 05 % |
| Major-severe storm | 01 % | 01 % | 01 % |
| 24 hr | 48 hr | 72 hr | |
|---|---|---|---|
| Active | 15 % | 20 % | 15 % |
| Minor Storm | 25 % | 20 % | 30 % |
| Major-severe storm | 25 % | 10 % | 35 % |
Space Weather Alerts Issued in the last 24 hours
ALERTSN 2223
Geomagnetic K-index of 4
Issue Time: 2021 Jun 12 0452 UTC
| Threshold Reached | 2021 Jun 12 0452 UTC |
| Synoptic Period | 0300-0600 UTC |
| Active Warning | Yes |
| Potential Impacts | Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. |
| Induced Currents | Weak power grid fluctuations can occur. |
| Aurora | Aurora may be visible at high latitudes such as Canada and Alaska. |
WARNINGSN 3909
Geomagnetic K-index of 4 expected
Issue Time: 2021 Jun 12 0400 UTC
| Valid From | 2021 Jun 12 0400 UTC |
| Valid To | 2021 Jun 12 1200 UTC |
| Warning Condition | Onset |
| Potential Impacts | Area of impact primarily poleward of 65 degrees Geomagnetic Latitude. |
| Induced Currents | Weak power grid fluctuations can occur. |
| Aurora | Aurora may be visible at high latitudes such as Canada and Alaska. |
3-days of 5-minute solar x-ray flux values (GOES-15)
Manually reviewed and edited by the duty forecaster
Sources: NOAA's Space Weather Prediction Center (SWPC), Joint Science Operations Center (JSOC)