Latest Aurora Forecast (30min)
Source: SWPC NOAA
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Geophysical Observations and Predictions
Issued (UTC): 2025 Jun 28 06:05 UTC
Issued (local): Sat Jun 28 2025 06:05:00 GMT+0000 (Coordinated Universal Time)
Prepared by the US Dept. of Commerce, NOAA, Space Weather Prediction Center
Predictions
No space weather storms are predicted for the next 24 hours.
Observations
No space weather storms were observed for the past 24 hours.
Geophysical Alert Message
Solar-terrestrial indices for 27 June follow.
Solar flux 118 and estimated planetary A-index 21.
The estimated planetary K-index at 0600 UTC on 28 June was 2.33.
Solar flux 118 and estimated planetary A-index 21.
The estimated planetary K-index at 0600 UTC on 28 June was 2.33.
3-Day Forecast
Issued (UTC): 2025 Jun 28 00:30 UTC
Issued (local): Sat Jun 28 2025 00:30:00 GMT+0000 (Coordinated Universal Time)
Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center
Geomagnetic Activity Observation and Forecast
The greatest observed 3 hr Kp over the past 24 hours was 5 (NOAA Scale G1).
The greatest expected 3 hr Kp for Jun 28-Jun 30 2025 is 3.67 (below NOAA Scale levels).
The greatest expected 3 hr Kp for Jun 28-Jun 30 2025 is 3.67 (below NOAA Scale levels).
| Jun 28 | Jun 29 | Jun 30 | |
|---|---|---|---|
| 00-03UT | 3.67 | 2.67 | 1.67 |
| 03-06UT | 3.33 | 2.33 | 1.67 |
| 06-09UT | 3.00 | 2.33 | 1.67 |
| 09-12UT | 2.67 | 2.00 | 1.33 |
| 12-15UT | 2.33 | 1.33 | 1.33 |
| 15-18UT | 2.33 | 1.67 | 1.33 |
| 18-21UT | 3.33 | 2.00 | 1.33 |
| 21-00UT | 3.00 | 2.00 | 1.33 |
Rationale: No G1 (Minor) or greater geomagnetic storms are expected. No significant transient or recurrent solar wind features are forecast.
Solar Radiation Activity Observation and Forecast
Solar radiation, as observed by NOAA GOES-18 over the past 24 hours, was below S-scale storm level thresholds.
| Jun 28 | Jun 29 | Jun 30 | |
|---|---|---|---|
| S1 or greater | 5% | 5% | 5% |
Rationale: No S1 (Minor) or greater solar radiation storms are expected.
No significant active region activity favorable for radiation storm production is forecast.
No significant active region activity favorable for radiation storm production is forecast.
Radio Blackout Activity and Forecast
No radio blackouts were observed over the past 24 hours.
| Jun 28 | Jun 29 | Jun 30 | |
|---|---|---|---|
| R1-R2 | 25% | 25% | 25% |
| R3 or greater | 5% | 5% | 5% |
Rationale: There exists a chance for R1-R2 (Minor-Moderate) radio blackouts over 28-30 Jun.