Viewing archive of Thursday, 27 March 2025
Solar activity report
Report of Solar-Geophysical Activity 2025 Mar 27 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 86 Issued at 2200Z on 27 Mar 2025IA. Analysis of Solar Active Regions and Activity from 26-2100Z to 27-2100Z
IB. Solar Activity Forecast
IIA. Geophysical Activity Summary 26-2100Z to 27-2100Z
IIB. Geophysical Activity Forecast
III. Event Probabilities 28 Mar to 30 Mar
| Class M | 25% | 25% | 25% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 27 Mar 153 Predicted 28 Mar-30 Mar 155/150/145 90 Day Mean 27 Mar 182
V. Geomagnetic A Indices
Observed Afr/Ap 26 Mar 026/048 Estimated Afr/Ap 27 Mar 023/034 Predicted Afr/Ap 28 Mar-30 Mar 018/025-013/015-008/008
VI. Geomagnetic Activity Probabilities 28 Mar to 30 Mar
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 35% | 20% | 10% |
| Minor storm | 20% | 05% | 01% |
| Major-severe storm | 05% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 10% | 15% | 15% |
| Minor storm | 25% | 25% | 20% |
| Major-severe storm | 50% | 25% | 20% |
All times in UTC
Current data suggests there is a high possibility for aurora to appear at the following high latitude regions in the near future
Fairbanks, AKCurrent data suggests there is a moderate possibility for aurora to appear at the following high latitude regions in the near future
Gillam, MB, Whitehorse, YT, Yellowknife, NTAnchorage, AK, Juneau, AK
Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future
Edmonton, AB, Saskatoon, SKLatest news
X1.1 solar flare
Coronal hole faces Earth
Strong G3 geomagnetic storm watch for 23 March
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Latest alerts
08:12 UTC - Hemispheric Power Index
The OVATION model predicts the Hemispheric Power Index to reach 76GW at 08:57 UTC
02:00 UTC - Geomagnetic activity
Minor G1 geomagnetic storm (Kp5) Threshold Reached: 01:45 UTC
Tuesday, 8 April 2025
23:57 UTC - Hemispheric Power Index
The OVATION model predicts the Hemispheric Power Index to reach 50GW at 00:44 UTC
22:42 UTC - Solar flare
Moderate M1.57 flare
22:24 UTC - Radio Blackout
Minor R1 radio blackout in progress (≥M1 - current: M1.52)
Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/08 | M1.5 |
| Last geomagnetic storm | 2025/04/06 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| March 2025 | 134.2 -20.4 |
| April 2025 | 148.6 +14.4 |
| Last 30 days | 137.1 -0.2 |