Daily Bulletin

19. 6. 2021 (issued 05:00 UT)

Relative sunspot number - Ondřejov: 15

AR NOAA 2833 has been classified as Cso and it is located at N23W01. Currently it is without flare activity.

NOAA 2834 is observed faculae only.

The solar activity is expected to remain at very low level for the next 24 hours with 10 % probability of C-class flare.

Chromosphere - 04:21 UT- Ondřejov Observatory X-ray GOES - 04:58 UT Chromosphere - 04:21 UT- Ondřejov Observatory

18. 6. 2021 (issued 06:00 UT)

Relative sunspot number - Ondřejov: 23

AR NOAA 2833 has been classified as Hsx and it is located at N24E12. This AR produced only A7.3 flare with GOES peak at 12:58 UT on June 17, 2021. Currently it is without flare activity.

There is a new active region (no number asigned yet), has been classified as Bxo and it is located at N21W62. Currently it is without flare activity.

The solar activity is expected to remain at very low level for the next 24 hours with 10 % probability of C-class flare.

We observe a few significant protuberances on the limb.

Chromosphere - 04:22 UT- Ondřejov Observatory X-ray GOES - 06:12 UT Chromosphere - 04:22 UT- Ondřejov Observatory

17. 6. 2021 (issued 07:00 UT)

Relative sunspot number - Ondřejov: 12

AR NOAA 2833 has been classified as Hsx and it is located at N22E23. This AR produced only B1.1 flare with GOES peak at 08:28 UT on June 16 2021. Currently it is without flare activity.

The solar activity is expected to remain at very low level for the next 24 hours with 5 % probability of C-class flare.

We observe a few significant protuberances on the limb.

Chromosphere - 05:21 UT- Ondřejov Observatory X-ray GOES - 06:17 UT Chromosphere - 05:22 UT- Ondřejov Observatory


16. 6. 2021 (issued 10:15 UT)

Relative sunspot number - Ondřejov: 11

AR NOAA 2833 has been classified as Hsx and it is located at N22E34. Currently it is without flare activity.

The solar activity is expected to remain at very low level for the next 24 hours with 5 % probability of C-class flare.

We observe a few significant protuberances on the limb.

Chromosphere - 07:01 UT- Ondřejov Observatory X-ray GOES - 09:53 UT Magnetogram (SDO/HMI) 09:15 UT


15. 6. 2021 (issued 06:30 UT)

Relative sunspot number - Ondřejov: 12


The situation on the solar disk is similar to yesterday - NOAA 2832 is spotless now, it has observed faculae only. During 24 hours this AR produced two events, B1.0 flare a A8.7 flare.

AR NOAA 2833 has been classified as Hsx and it is located at N23E50. This AR produced only A-class flare.

The solar activity is expected to remain at very low level for the next 24 hours with 10% probability of C-class flare.

We observe a few significant protuberances on the limb.

Chromosphere - 05:11 UT- Ondřejov Observatory X-ray GOES - 06:05 UT Magnetogram (SDO/HMI) 05:30 UT


14. 6. 2021 (issued 07:50 UT)

Relative sunspot number - Ondřejov: 11


NOAA 2832 is spotless now, it has observed faculae only. During 24 hours this AR produced two events, the largest of them was B1.2 flare with GOES peak at 18:43 UT on June 13 2021.

AR NOAA 2833 has been classified as Hsx and it is located at N23E62. Currently it is without flare activity.

The solar activity is expected to remain at very low level for the next 24 hours with 10% probability of C-class flare.

We observe a few significant protuberances on the limb.

Chromosphere - 05:38 UT- Ondřejov Observatory X-ray GOES - 07:18 UT Chromosphere - 05:39 UT- Ondřejov Observatory

10. 6. 2021 (issued 05:00 UT)

Relative sunspot number - Ondřejov:31
Aktivity: very low
Today there are two regions with sunsposts on the solar disk.

NOAA 2829 has been classified as Bxo and it is located at S19W42. Currently it is without flare activity.

The second AR NOAA 2832 has been classified as Bxi and it is located at SN14W03. Currently it is without flare activity.

The solar activity is expected to remain at very low level for the next 24 hours with 15% probability of C-class flare.

We observe a few significant protuberances on the limb.

 
Chromosphere - 04:09 UT- Ondřejov Observatory X-ray GOES - 04:47 UT Chromosphere - 04:09 UT- Ondřejov Observatory

8. 6. 2021 (issued v 9:00 UT)

Relative sunspot number - Ondřejov: 29
Today there are two regions with sunsposts on the solar disk.

NOAA 2828 has been classified as Hsx and it is located at S26W74. Currently it is without flare activity.

The second AR NOAA 2829 has been classified as CSo and it is located at S19W16. During 24 hours this AR produced two events, the largest of them was B2.0 flare with GOES peak at 20:52 UT on June 7 2021.

The solar activity is expected to remain at very low to low level for the next 24 hours with 15% probability of C-class flare.

We observe a few significant protuberances on the limb.

Chromosphere - 05:34 UT- Ondřejov Observatory X-ray GOES - 08:45 UT Magnetogram (SDO/HMI) 08:15 UT


4. 6. 2021 (issued v 05:15 UT)

Relative sunspot number - Ondřejov: 50
Today there are three regions with sunsposts on the solar disk.

NOAA 2827 has been classified as Dsi and it is located at N11W32. During 24 hours this AR produced B1.3 flare with GOES peak at 16:25 UT on June 3, 2021.

The second AR NOAA 2829 has been classified as Cao and it is located at S19E33. During 24 hours this AR produced several events, the largest of them was B2.2 flare with GOES peak at 01:30 UT on June 4, 2021.

AR NOAA 2828 has been classified as Axx and it is located at S20E33. Currently it is without flare activity.

The solar activity is expected to remain at very low to low level for the next 24 hours with 25% probability of C-class flare.

Chromosphere - 04:15 UT- Ondřejov Observatory X-ray GOES - 05:09 UT Chromosphere - 04:16 UT- Ondřejov Observatory

3. 6. 2021 (issued 05:00 UT)

Relative sunspot number - Ondřejov: 31
Today there are two regions with sunsposts on the solar disk.

NOAA 2827 has been classified as Csi and it is located at N11W18. Currently it is without flare activity.

The second AR NOAA 2829 has been classified as Cao and it is located at S19E47. During 24 hours this AR produced several events, the largest of them was B5.7 flare with GOES peak at 02:05 UT on June 3, 2021.

The solar activity is expected to remain at very low to low level for the next 24 hours with 20% probability of C-class flare.

Chromosphere - 04:10 UT- Ondřejov Observatory X-ray GOES - 04:54 UT Chromosphere - 04:32 UT- Ondřejov Observatory

2. 6. 2021 (issued 06:00 UT)

Relative sunspot number - Ondřejov: 36
Today there are two active regions with sunsposts on the solar disk.

NOAA 2827 has been classified as Cai and it is located at N11W04. During 24 hours this AR produced 2 events, the largest of them was B1.6 flare with GOES peak at 23:37 UT on June 1, 2021.

There is a new active region (no number asigned yet), has been classified as Cro and it is located at S20E13. During 24 hours this AR produced 2 events, the largest of them was B1.2 flare with GOES peak at 11:43 UT on June 1, 2021.

The solar activity is expected to remain at very low to low level for the next 24 hours with 25% probability of C-class flare.

Chromosphere - 05:16 UT - Ondřejov Observatory X-ray GOES - 05:48 UT Chromosphere - 05:17 UT - Ondřejov Observatory

1. 6. 2021 (issued 06:15 UT)

Relative sunspot number - Ondřejov: 50
Today there are three active regions with sunsposts on the solar disk.

NOAA 2827 has been classified as Cai and it is located at N11E11. During 24 hours this AR produced 9 events, the largest of them was C1.6 flare with GOES peak at 04:31 UT on June 1, 2021.

The second AR NOAA 2828 has been classified as Axx and it is located at S31E17. Currently it is without flare activity.

There is a new active region (no number asigned yet), has been classified as Bxo and it is located at N22W33. Currently it is without flare activity.

The solar activity is expected to remain at very low to low level for the next 24 hours with 25% probability of C-class flare.

Chromosphere - 05:08 UT - Ondřejov Observatory X-ray GOES - 06:08 UT Event C1.6- Solarsoft (NOAA 2728)

31. 5. 2021 (issued 07:14 UT)

Relative sunspot number - Ondřejov: 38

Today there are two active regions with sunsposts on the solar disk.

NOAA 2827 has been classified as Cai and it is located at N11E23. During 24 hours this AR produced 13 events in the range between B1.8 - B8.0, the largest of them was B7.7 flare with GOES peak at 05:44 UT on May 31, 2021.

The second AR NOAA 2828 has been classified as Bxo and it is located at S31E30. Currently it is without flare activity.

The solar activity is expected to remain at very low level for the next 24 hours with 15% probability of C-class flare.

Magnetogram (SDO/HMI) 06:30 UT X-ray GOES - 07:09 UT Event B7.7 - Solarsoft (NOAA 2827)

09.05.2021 (issued 07:55 UT)

Relative sunspot number - Ondřejov: 34

The solar activity is expected to remain at very low to low level for the next 24 hours with 40% probability of C-class flare and 5% probability of M-class.

NOAA 2822 has been classified as Dai and it is located at N18E41. During 24 hours this AR produced 8 events in the range between B1.8 - B3.0 and 4 C-class, the largest of them was C4.0 flare with GOES peak at 13:58 UT on May 9, 2021.

There is a new active region (no number asigned yet), has been classified as Bxo and it is located at S24E50. Currently it is without flare activity.

We observe a few significant protuberances on the limb.

06:07 UT (H-alpha Ondřejov) 07:14 UT (GOES X-ray) Magnetogram SDO at 06:45 UT


09.05.2021 (issued 09:40 UT)

Relative sunspot number - Ondřejov: 15

The solar activity is expected to remain at very low to low level for the next 24 hours with 40% probability of C-class flare and 5% probability of M-class.

NOAA 2822 has been classified as Csi and it is located at N18E53. During 24 hours this AR produced 11 events in the range between B1.0 - B3.0 and 3 C-class, the largest of them was C8.6 flare with GOES peak at 18:45 UT on May 8, 2021.

We observe a few significant protuberances on the limb.

07:52 UT (H-alpha Ondřejov) 8:51 UT (GOES X-ray) Magnetogram SDO at 08:15 UT


08.05.2021 (issued 08:35 UT)

Relative sunspot number - Ondřejov: 13

NOAA 2822 has been classified as Cso and it is located at N18E68. During 24 hours this AR produced 11 events in the range between A7.5 - B6.0. On May 07, 2021 produced M3.9 flare with GOES peak at 19:04 UT on May 08, 2021.

The solar activity is expected to remain at very low to low level for the next 24 hours with 40% probability of C-class flare and 5% probability of M-class.

06:02 UT (H-alpha Ondřejov) 7:57 UT (GOES X-ray) Magnetogram SDO at 07:15 UT

28. 4. 2021 (issued 6:30 UT)

Relative sunspot number - Ondřejov: 53

Today there are three active regions with sunsposts on the solar disk.

NOAA 2818 has been classified as Hsx and it is located at S16W28. During last 24 hours this AR produced 4 events (B-class).

The second AR NOAA 2820 has been classified as Dac and it is located at S23W28. During last 24 hours this AR produced 5 events, the biggest was B2.2 flare with GOES peak at 21:53 UT on April 27, 2021.

The last AR NOAA 2821 has been classified as Cao and it is located at S20W47. Currently it is without flare activity.

Active regions NOAA 2819  is spotless now, it has observed faculae only.

The solar activity is expected to remain at low level for the next 24 hours with 40% probability of C-class flare.

05:53 UT (HMI/SDO) 06:25 UT (GOES X-ray) Magnetogram SDO at 05:30 UT

27. 4. 2021 (issued 6:15 UT)

Relative sunspot number - Ondřejov: 64

Today there are three active regions with sunsposts on the solar disk.

NOAA 2818 has been classified as Hax and it is located at S17W16. Currently it is without flare activity.

The second AR NOAA 2820 has been classified as Dac and it is located at S24W18. During last 24 hours this AR produced 12 events, the biggest was B4.2 flare with GOES peak at 13:34 UT on April 26, 2021.

The last AR NOAA 2821 has been classified as Dai and it is located at S23W28. Currently it is without flare activity.

Active regions NOAA 2816 and 2819 are spotless now, they have observed faculae only.

The solar activity is expected to remain at low level for the next 24 hours with 50% probability of C-class flare.

05:41 UT (HMI/SDO) 06:05 UT (GOES X-ray) Magnetogram SDO at 05:45 UT

26. 4. 2021 (issued 06:40  UT)

Relative sunspot number - Ondřejov: 59

Today there are three active regions with sunsposts on the solar disk.

NOAA 2818 has been classified as Hax and it is located at S17W03. Currently it is without flare activity.

The second AR NOAA 2820 has been classified as Dac and it is located at S23W05. During last 24 hours this AR produced 15 events, the biggest was B7.3 flare with GOES peak at 02:11 UT on April 26, 2021.

The last AR NOAA 2821 has been classified as Dao and it is located at S23W16. Currently it is without flare activity.

Active regions NOAA 2816  is spotless now, it has observed faculae only. This the AR produced C1.3 flare with GOES peak at 02:30 UT on April 26, 2021. 

The solar activity is expected to remain at low level for the next 24 hours with 60% probability of C-class flare.

 05:53 UT (HMI/SDO) 06:33 UT (GOES X-ray) 26. 4. 2021 at 02:30 UT (SolarSoft)

23. 4. 2021 (issued 06:45 UT)

Relative sunspot number - Ondřejov: 48

Today there are three active regions with sunsposts on the solar disk.

NOAA 2816 has been classified as Eao and it is located at S27W16. This the AR produced C1.0 flare with GOES peak at 05:25 UT on April 23, 2021.

The second AR NOAA 2818 has been classified as Hsx and it is located at S17E36. Currently it is without flare activity.

The last AR (no number asigned yet) has been classified as Axx and it is located at N24W04. Currently it is without flare activity.

06:23 UT (HMI/SDO) 06:51 UT (GOES X-ray) 06:14 UT (H-alpha Ondrejov)

21. 4 . 2021 (issued 08:30 UT)

Relative sunspot number - Ondřejov: 56

Today there are three active regions with sunsposts on the solar disk.

NOAA 2817 has been classified as Eao and it is located at N19W79. During last 24 hours this AR produced 16 events, the biggest was C1.9 flare with GOES peak at 11:51 UT on April 20, 2021.

The second AR NOAA 2816 has been classified as Dac and it is located at S27E07. This the AR produced B5.0 flare with GOES peak at 17:59 UT on April 20, 2021.

The last AR NOAA 2818 has been classified as Hsx and it is located at S17E63. Currently it is without flare activity.

The solar activity is expected to remain at low level for the next 24 hours with 50% probability of C-class flare.

Magnetogram SDO at 07:45 UT GOES X-ray at 08:26 UT 20. 4. 2021 at 11:51 UT (SolarSoft)

9. 4. 2021 (issued 08:35 UT)

Relative sunspot number - Ondřejov: 0

Solar activity is at very low level. We observe a few significant protuberances on the limb.

The solar activity is expected to remain at very low level for the next 24 hours with 1% probability of C-class flare.

 07:16 UT (H-alpha Ondrejov) GOES X-ray at 08:12 UT 07:17 UT (H-alpha Ondrejov)

1. 4. 2021 (issued 08:30 UT)

Relative sunspot number - Ondřejov: 0

Solar activity is at very low level. Active regions NOAA 2811 and 2812 are spotless now, they have observed faculae only.

The solar activity is expected to remain at very low level for the next 24 hours with 1% probability of C-class flare.

06:33 UT (H-alpha Kanzelhöhe Observatory) 07:53 UT (HMI/SDO) 08:28 UT (GOES X-ray)

31. 3. 2021 (issued 08:02 UT)

Relative sunspot number - Ondřejov: 0

Solar activity is at very low level.

The solar activity is expected to remain at very low level for the next 24 hours with 5% probability of C-class flare.

07:43 UT (H-alpha Ondřejov) 07:42 UT (H-alpha Ondřejov) 07:57 UT (GOES X-ray)

30. 3. 2021 (issued 08:44 UT)

Relative sunspot number - Ondřejov: 13

Today there are one active region with sunsposts on the solar disk.
The AR 2812 has been classified as Bxo and it is located at N21W21. During next 24 hours no significiant activity is expected.
There is a significant prominence on the northwestern limb.

The solar activity is expected to remain at very low level for the next 24 hours with 5% probability of C-class flare.

08:09 UT (H-alpha Ondřejov) 08:11 UT (H-alpha Ondřejov) 08:39 UT (GOES X-ray)

22. 3. 2021 (issued 12:00 UT)

Relative sunspot number - Ondřejov: 23

Today there are two active regions with sunsposts on the solar disk.

NOAA 2811 has been classified as Bxo and it is located at N19E52. During last 24 hours this AR produced 8 events in the range between A9.1 - B1.6.

The second AR (no number asigned yet) has been classified as Hsx and it is located at N20E75. Currently it is without flare activity.

The NOAA 2810 is spotless now. It is located at N18W06 (solarmonitor.org: 96",407" at 08:30 UT). This the AR produced B5.6 flare with GOES peak at 01:39 UT on March 22, 2021. 

09:02 UT (H-alpha Ondřejov) 10:59 UT (GOES X-ray) 08:56 UT Magnetogram (Heliowiewer.org)


10. 3. 2021 issued 10:00 UT)

Relative sunspot number - Ondřejov: 22

Today there are two active regions with sunsposts on the solar disk.

The AR 2808 has been classified as Hsx and it is located at N19E65. This the AR produced C1.6 flare with GOES peak at 12:35 UT on March 9, 2021. During next 24 hours no significiant activity is expected.
The second AR (no number asigned yet) has been classified as Axx and it is located at S21E36. Currently it is without flare activity.

AR 2807 is spotless now, it has observed faculae only. It is located at S18W55.

09:29 UT (HMI-SDO) 09:54 UT (GOES X-ray) 9. 3. 2021 at 12:35 UT (SolarSoft)

8. 3. 2021 (issued 14:35 UT)

Relative sunspot number - Ondřejov: 24

Today there are two active regions with sunsposts on the solar disk.

The AR 2806 has been classified as Cso and it is located at S30W75. This the AR produced B1.3 flare with GOES peak at 03:11 UT on March 8, 2021.
The second AR (no number asigned yet) has been classified as Axx and it is located at S21E61. Currently it is without flare activity.

The solar activity is expected to remain at very low level for the next 24 hours with 10% probability of C-class flare.

13:59 UT (HMI-SDO) 14:30 UT (GOES X-ray) Magnetogram SDO v 14:00 UT

7. 3. 2021 (issued 10:30 UT)

Relative sunspot number - Ondřejov: 42

Today there are three active regions with sunsposts on the solar disk. .

The AR 2806 has a dynamic evolution. It was created on February 28, 2021 and several times was close to decay. Yesterday the AR 2806 was spotless. The region has been classified as Dso and it is located at S30W61. This AR during 24 hours produced 6 low B-class flares. Activity is expected - B-class flares mainly.

The AR 2804 has been classified as Bxo and it is located at S18W13. Currently it is without flare activity.

The third AR (no number asigned yet) has been classified as Axx and it is located at N28E59. Currently it is without flare activity.

There is a significant prominence on the southeastern limb.

The solar activity is expected to remain at very low level for the next 24 hours with 5% probability of C-class flare.

09:52 UT (H-alpha Ondřejov) 09:52 UT (H-alpha Ondřejov) 11:20 UT (GOES X-ray)

6. 3. 2021 (issued 10:30 UT)

Relative sunspot number - Ondřejov: 14

The AR 2807 has been classified as Bxo and it is located at S18E00. Currently it is without flare activity.
The AR 2806 is spotless now and it is located at S32W46. Currently it is without flaring activity.
There is a significant faculae on the northeastern limb. This region during 24 hours produced 4 low flares, more flare activity is expected.

The solar activity is expected to remain at very low level for the next 24 hours with 5% probability of C-class flare.

 
09:55 UT (H-alpha Ondřejov) 09:56 UT (H-alpha Ondřejov) 10:29 UT (GOES X-ray)

2. 3. 2021 (issued 09:30 UT)

Relative sunspot number - Ondřejov: 18

The AR 2805 is spotless now, it has observed faculae and prominece only. It is located close the west limb.
The second AR (no number asigned yet) has been classified as Cro and it is located at S30E07. Currently without flare activity.

The solar activity is expected to remain at very low levels for the next 24 hours with 10% probability of C-class flare.

 08:23 UT (HMI-SDO)  08:59 UT (GOES X-ray) 08:12 UT (H-aphla Ondřejov)