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Daily bulletin on solar and geomagnetic activity from the SIDC
Emesso: 2013 May 13 1325 UTC
SIDC Forecast
Brillamenti solari
Active (M-class flares expected, probability >=50%)
Geomagnetism
Quiet (A<20 and K<4)
Protoni solari
Quiet
| 10cm flux | Ap | |
|---|---|---|
| 13 May 2013 | 148 | 010 |
| 14 May 2013 | 150 | 007 |
| 15 May 2013 | 155 | 010 |
Bulletin
An active region behind the east limb produced an X1.7 flare with peak at 02:17 UT and several M class flares. There were Type II and III radio bursts and a CME associated with this flare. The CME is not expected to arrive to the Earth. Active conditions are expected with more M and X class flares possible, in particular when this AR rotates over the visible disk in a few days. C and M class flares can be expected mostly from NOAA AR 1744, 1745 and 1746. Geomagnetic conditions are quiet, unsettled conditions may occur with the expected arrival of a mildly fast speed stream from a coronal hole today and tomorrow.
Today's estimated international sunspot number (ISN): 094, based on 08 stations.Solar indices for 12 May 2013
| Wolf number Catania | /// |
| 10cm solar flux | 147 |
| AK Chambon La Forêt | 007 |
| AK Wingst | 006 |
| Estimated Ap | 004 |
| Estimated international sunspot number | 093 - Based on 18 stations |
Noticeable events summary
| Day | Begin | Max | Fine | Loc | Strength | OP | 10cm | Radio burst types | Catania/NOAA |
|---|---|---|---|---|---|---|---|---|---|
| 13 | 0153 | 0217 | 0232 | ---- | X1.7 | III/2VII/3II/1CTM/1 | |||
| 13 | 1157 | 1203 | 1209 | ---- | M1.3 |
Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive
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X1.5 solar flare
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Notizie sul meteo spaziale
| Ultimo brillamento X | 2026/03/30 | X1.5 |
| Ultimo brillamento M | 2026/04/09 | M1.0 |
| Ultima tempesta geomagnetica | 2026/04/03 | Kp7- (G3) |
| Giorni senza macchie | |
|---|---|
| Ultimi 365 giorni | 3 giorni |
| 2026 | 3 giorni (3%) |
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