Viewing archive of Saturday, 1 April 2023
Solar activity report
Report of Solar-Geophysical Activity 2023 Apr 01 2200 UTCPrepared by the NOAA © SWPC and processed by SpaceWeatherLive.com
Joint USAF/NOAA Report of Solar and Geophysical Activity
SDF Number 91 Issued at 2200Z on 01 Apr 2023IA. Analysis of Solar Active Regions and Activity from 31-2100Z to 01-2100Z
Solar activity has been at low levels for the past 24 hours.
The largest solar event of the period was a C6 event observed at
01/0328Z. There are currently 2 numbered sunspot regions on the disk.
IB. Solar Activity Forecast
Solar activity is expected to be very low
with a chance for a C-class flares on days one, two, and three (02 Apr,
03 Apr, 04 Apr).
IIA. Geophysical Activity Summary 31-2100Z to 01-2100Z
The geomagnetic
field has been at quiet to active levels for the past 24 hours. Solar
wind speed reached a peak of 662 km/s at 01/0247Z. Total IMF reached 6
nT at 01/2006Z. The maximum southward component of Bz reached -5 nT at
01/0937Z. Electrons greater than 2 MeV at geosynchronous orbit reached
a peak level of 3744 pfu.
IIB. Geophysical Activity Forecast
The geomagnetic field is expected
to be at quiet to unsettled levels on days one, two, and three (02 Apr,
03 Apr, 04 Apr).
III. Event Probabilities 02 Apr to 04 Apr
| Class M | 01% | 01% | 01% |
| Class X | 01% | 01% | 01% |
| Proton | 01% | 01% | 01% |
| PCAF | green | ||
IV. Penticton 10.7 cm Flux
Observed 01 Apr 125 Predicted 02 Apr-04 Apr 125/125/120 90 Day Mean 01 Apr 171
V. Geomagnetic A Indices
Observed Afr/Ap 31 Mar 017/016 Estimated Afr/Ap 01 Apr 009/012 Predicted Afr/Ap 02 Apr-04 Apr 007/008-008/008-007/010
VI. Geomagnetic Activity Probabilities 02 Apr to 04 Apr
| A. Middle Latitudes | |||
|---|---|---|---|
| Active | 30% | 30% | 35% |
| Minor storm | 10% | 10% | 15% |
| Major-severe storm | 01% | 01% | 01% |
| B. High Latitudes | |||
|---|---|---|---|
| Active | 15% | 15% | 10% |
| Minor storm | 25% | 25% | 30% |
| Major-severe storm | 40% | 40% | 45% |
All times in UTC
Current data suggests there is a slight possibility for aurora to appear at the following high latitude regions in the near future
Whitehorse, YTAnchorage, AK, Fairbanks, AK
Latest news
Friday, 28 March 2025
X1.1 solar flare
Monday, 24 March 2025
Coronal hole faces Earth
Saturday, 22 March 2025
Strong G3 geomagnetic storm watch for 23 March
Latest forum messages
AR 4055 94Incoming & Unnumbered Active Regions 16862025/04/12-13 Filament CMEs 2025/04/16 G2 Watch 21Ask your obscure/"stupid" space weather questions. 350Filament CME 6
More topicsSupport SpaceWeatherLive.com!
A lot of people come to SpaceWeatherLive to follow the Sun's activity or if there is aurora to be seen, but with more traffic comes higher server costs. Consider a donation if you enjoy SpaceWeatherLive so we can keep the website online!
Latest alerts
07:09 UTC - Solar flare
Moderate M4.28 flare from sunspot region 4055
06:48 UTC - Radio Blackout
Minor R1 radio blackout in progress (≥M1 - current: M1.53)
06:24 UTC - Solar flare
Moderate M1.49 flare from sunspot region 4055
06:06 UTC - Radio Blackout
Minor R1 radio blackout in progress (≥M1 - current: M1.16)
04:45 UTC - Geomagnetic activity
Active geomagnetic conditions (Kp4) Threshold Reached: 04:29 UTC
Space weather facts
| Last X-flare | 2025/03/28 | X1.1 |
| Last M-flare | 2025/04/14 | M4.2 |
| 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 | 132.1 -2.1 |
| Last 30 days | 132.4 -10.7 |