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Events

Radio Events of cycle 24 

Noticeable radio events of cycle 25

DateRadio EventContextQuicklook
20 October 2020 
13:24 - 13:36
Small group of type III bursts, 
followed by a weak type II burst
B3.6 flare in NOAA AR 2776quicklook
22 November 2020 
11:00 - 11:02
Type III burst quicklook
22 November 2020 
12:43 - 12:44
Group of type III bursts quicklook
22 November 2020 
13:59 - 14:01 
14:17 - 14:20
Groups of type III bursts quicklook
29 November 2020 
12:49 - 13:20
Groups of type III bursts 
and type II burst
M4.4 flare on the East limbquicklook
06 December 2020 
13:24 - 13:29
Groups of decimetric type III bursts 
and/or pulsations 
Peak flux 304 SFU at 1415 MHz
C1.6 flare in NOAA AR 2790quicklook
14 December 2020 
13:25 - 14:48
Metric type II burst 
with decimetric emission/pulsations?
C4.0 flare (14:37 UT, peak time) 
in NOAA AR 2792
quicklook
27 December 2020 
11:35 - 11:40
Group of type III bursts, 
with type U
B3.4 flare (11:37 UT, peak time) 
in NOAA AR 2795
quicklook
28 April 2021 
08:00 - 08:15
Group of type III bursts, 
with type J
 quicklook
09 May 2021 
13:51 - 14:08
Type III bursts, 
decimetric pulsations
C4 flare in NOAA AR 2822quicklook
22 May 2021 
11:12 - 11:27
Group of type III burstsC2.5 flare in NOAA AR 2824quicklook
22 May 2021 
13:10 - 13:27
Groups of type III bursts quicklook
22 May 2021 
14:06 - 14:14
Group of type III bursts 
local thunderstorm (14:15-14:19)
C1.1 flare in NOAA AR 2824quicklook
22 May 2021 
15:00 - 15:30
Groups of type III burstsC3.2 flare in NOAA AR 2824quicklook
23 May 2021 
09:16 - 09:28
Group of type III burstsC2.4 flare in NOAA AR 2824quicklook
23 May 2021 
10:50 - 12:00
Groups of type III burstsM1.1 flare in NOAA AR 2824quicklook
23 May 2021 
14:14 - 14:25
Groups of type III bursts quicklook
9 June 2021 
11:55 - 12:20
Type II burstB4.5 flare in NOAA AR 2827, prominence eruption on limbquicklook
28 October 2021 
15:20 - 16:10
Type II and type IV burst 
Occurred at the end of Sun's tracking
X1.0 flare in NOAA AR 2887quicklook
20 December 2021 
11:20 - 11:50
Type II burstM1.8 flare in NOAA AR 2909quicklook
‌28 March 2022 11:10 - 12:10‌Type II and type IV burst‌M4 flare in NOAA AR 2975

‌22 April 2022

13:20 - 13:50

‌Type II and decimetric "smooth" unidentified emission‌M3.4 flare in NOAA AR 2993

‌29 April 2022

07:15 - 07:30

Grou‌p of type III bursts, noise stormM1‌.2 flare in NOAA AR 2996

‌30 April 2022

09:50 - 10:20

‌Type III and type II burstsM4.8 flare in NOA‌A AR 2994

‌30 April 2022

13:43 - 14:08

‌Type III and type II burstsX‌1.1 flare in NOAA AR 2994

10 May  2022

13:35 - 14:35

High frequency type III bursts, type II and type IV burstsX1.5 flare in NOAA AR 3006

‌15 August 2022

14:33 - 14:36

High frequency‌ type III bursts, reverse drift burstsM‌1 flare in NOAA AR 3078

‌16 August 2022

07:54 - 08:20

‌High frequency burst, type II and type IV‌M5 flare in NOAA AR 3078

‌16 August 2022

14:30 - 15:30

Type‌ IV‌C flares?

‌17 August 2022

14:36 - 15:30

‌Type IV, intense below 500 MHz‌M2 and M1 flares in NOAA AR 3078

‌18 August 2022

10:00 - 11:30

‌Type III and type IV‌2 M1 flares in NOAA AR 3078

26 August 2022

13:30  - 14:30

Type IVFlare in NOAA AR 3088

16 September 2022

09:00 - 12:00

Type IVC flares in NOAA AR 3098

20 September 2022

11:20 - 11:30

Type III bursts and decimetric burstsM1 flare in NOAA AR 3102

23 September 2022

13:40 - 14:10

Type IV burst 

27 September 2022

10:30 - 11:00

Type II burstFlare in NOAA AR 3105

29 September2022

11:50 - 12:20

Decimetric burst and low frequency type II burstC5.7 flare in NOAA AR 3112

03 October 2022

09:50 - 10:40

Type IV burstM4.2 flare in NOAA AR 3110

04 October 2022

12:50 - 14:00

Type IV burstM1.6 flare in NOAA AR 3110

11 October 2022

08:30 - 09:00

Decimetric burst and type II burstM3.9 flare in NOAA AR 3112

11 October 2022

10:45 - 11:10

Decimetric burst and type II burstM1.5 flare in NOAA AR 3112

12 October 2022

14:20 - 14:35 

Decimetric burst and type II burstC8.8 flare in NOAA AR 3112

14 October 2022

09:30 - 10:30

Type IV burstM1.3 flare in NOAA AR 3119

19 November 2022

12:40 - 13:40

Decimetric burst, pulsations and type II burstM1.6 flare in NOAA AR 3150

14 December 2022

08:15 - 08:45

Type II burstM1.1 flare in NOAA AR 3165
30 April 2023 14:30 - 16:00Decimetric pulsations - necklace burstsC3.9 flare in NOAA AR 3288
04 May 2023 08:00 - 11:00Low frequency type II burst. Type IV burstM3.9 flare in NOAA AR 3296
05 May 2023 07:30 - 11:00Type IV burstM2.1 flare in NOAA AR 3296
05 May 2023 15:20 - 15:50Type III bursts and pulsationsM1.2 flare in NOAA AR 3296
11 May 2023 08:40 - 09:20Low frequency type II burst. Decimetric burstM2.1 flare in NOAA AR 3294
17 May 2023 15:00 - 15:30Low frequency type III and type II burstsC4.3 flare in NOAA AR 3309
22 May 2023 13:20 - 14:00Type III bursts - Low frequency type II burst - noise stormC7.2 flare in NOAA AR 3314 - M1.9 flare in NOAA AR 3311
30 May 2023 13:30 - 13:50Type III bursts - Type II burstM1.4 flare in NOAA AR 3315
7 June 2023 11:30 - 12:00Decimetric burstM4.7 flare in NOAA AR 3327
12 June 2023 06:50 - 07:20group of type III bursts and type II burstsC5.2 flare in NOAA AR 3330
16 june 2023 10:20 - 11:00Decimetric pulsationsM1 flare in NOAA AR 3338
18 June 2023 13:30 - 14:00Decimetric continuum, group of type III bursts and weak type II burstM2.5 flare in NOAA AR 3336
19 june 2023 12:00 - 12:30Type III bursts and possibly a type II burstM1.1 flare in NOAA AR 3341
21 june 2023 15:30 - 16:00Type III bursts, decimetric bursts and type II burstM1.0 flare in NOAA AR 3337
...July -- August 2023 to be completed......

15 September 2023

08:55 - 09:05

Homologous high frequency type III burstsC1.9 flare in NOAA AR 3429

19 September 2023

09:25 - 10:00

Group of high frequency type III burstsM1.8 flare in NOAA AR 3435

20 September 2023

08:40 - 09:10 

Decimetric pulsation and zebraNot clear

20 September 2023

12:10 - 12:20

Decimetric burst (pulsation, type III)C3.4 flare in NOAA AR 3438

20 September 2023

14:10 - 14:30

Decimetric burst and type III burstsM8.2 flare in NOAA AR 3435

21 September 2023

12:45 - 13:30

Decimetric burst and type III burstsM8.7 flare in NOAA AR 3435

28 September 2023

09:05 - 09:10

Decimetric burst and type III burstsM1.2 flare in NOAA AR 3450

02 November 2023

12:20 - 12:30

High frequency type III bursts, reverse drift, peculiar low frequency type IIIC2.2 flare in NOAA AR 3474

23 November 2023

14:30 - 14:50

High frequency type III bursts, nice type J bursts, type II  burstM1.6 flare in NOAA AR 3480

29 january 2024

10:00 - 10:45

Group of type III (and U) bursts and type IIC5.4 flare

09 February 2024

12:50 - 14:30

Group of type III bursts and decimetric type IVX3.3 flare in NOAA AR 3575

14 February 2024

07:20 - 07:50

Group of type III, possibly weak type II

Strong noise storm emission

M1 flare in NOAA AR 3576

16 February 2024

06:40 - 07:15

Group of type III bursts and multiple type II burstsX2 flare in NOAA AR 3576

17 February 2024

13:10 - 13:50

Weak metric type II. Type II like emission in decimetric rangeOptical subflare in NOAA AR 3583

28 February 2024

09:00 - 09:30

Metric type II burstC5.1 flare at S18E31

10 March 2024

12:00 - 12:30

Pulsations and type II burstM7.4 flare in NOAA AR 3599

Noticeable radio events of cycle 24

DateRadio EventContextQuicklook
21 August 2015 
09:35 - 10:15 
Warning: time shift of ~ 30s (in advance TBC)
Pulsations, spikes in type IV burst; Low frequency type II (CALLISTO)M1.4 flare in NOAA AR 12403quicklook
23 August 2015 
09:50 - 10:00 
Warning: time shift of ~ 30s (in advance TBC)
Group of type III bursts and narrow band patchy burstsB9.8 flare in NOAA AR 12403; Jet in EUV; Strong interplanetary type IIIquicklook
24 August 2015 
07:20 - 07:45 
Warning: time shift of ~ 30s (in advance TBC)
Complex event, with type III bursts, narrow band type III like bursts and pulsationsM5.6 flare in NOAA AR 12403; EUV wave 
Fermi observation up to 300 keV
quicklook
24 August 2015 
10:10 - 10:30 
Warning: time shift of ~ 30s (in advance TBC)
Group of type III bursts, some have metric spikes at originC1.6 flare in NOAA AR 12403. EUV jetquicklook
24 August 2015 
12:00 - 12:20 
Warning: time shift of ~ 30s (in advance TBC)
Complex event with type III bursts, narrow band bursts, pulsations and a non-identified burstC2.5 flare in NOAA AR 12403; EUV jetquicklook
25 August 2015 
10:20 - 10:40 
Warning: time shift of ~ 30s (in advance TBC)
Groups of type III burstsC1.7 flare in NOAA AR 12403; Multiple EUV jets 
Fermi observations, with multiple peaks
quicklook
13 October 2015 
14:05 - 14:15
Narrow band type III bursts & smooth continuumC9.6 flare, East limbquicklook
15 October 2015 
07:40 - 07:50
Two groups of type IIIs, some with reverse driftC1.2 flare in NOAA AR 12434 
Partial observation with RHESSI
quicklook
15 October 2015 
10:40 - 10:50
Group of type III bursts and narrow band burstsC2.7 flare in NOAA AR12434 
Fermi observations up to 50 keV
quicklook
15 October 2015 
12:20 - 12:30
A few type III bursts and narrow band burstsC1.1 flare in NOAA AR 12434 
Fermi observations up to 50 keV
quicklook
15 October 2015 
13:40 - 13:55
Narrow band bursts, maybe part of type II, a few type III bursts & smooth continuumC3.6 flare in NOAA AR 12434 
RHESSI observations up to 50 keV
quicklook
16 October 2015 
08:53 - 09:03
Groups of type IIIs bursts & short high frequency continuum-like emissionC3.1 flare in NOAA AR 12434 
Partial RHESSI observation up to 50 keV
quicklook
16 October 2015 
10:14 - 10:19
Groups of type IIIs bursts (also U burst) & short high frequency continuum-like emissionC3.8 flare 
Limb event (East Limb)
quicklook
16 October 2015 
12:45 - 12:55
Weak groups of type IIIs bursts & short high frequency continuum-like emission 
Low frequency type II (CALLISTO) & possibly high frequency type II part?
C3.8 flare 
Limb event (East Limb)
quicklook
16 October 2015 
13:19 - 13:23
Groups of type III bursts & short high frequency continuum-like emission 
Again, low frequency type II (CALLISTO)
C4.3 flare, limb event (East Limb) 
RHESSI observation up to 300 keV?
quicklook
16 October 2015 
13:35 - 13:43
Groups of type IIIs, patchy bursts & short high frequency continuum-like emissionC4.2 flare in NOAA AR 12434quicklook
17 October 2015 
09:25 - 09:30
Small group of type III burstsC1.6 flare in NOAA AR 12434? (not reported by NOAA)quicklook
17 October 2015 
12:50 - 13:00
Group of type IIIsC2.3 flare in NOAA AR 12434quicklook
18 October 2015 
08:51 - 08:56
Nice group of type IIIsC1.3 flare in NOAA AR 12431 
RHESSI observations up to 12 keV
quicklook
20 October 2015 
07:23 - 07:28
Small group of type U/J bursts, reverse driftC1 flare in NOAA AR 12436 
RHESSI observations up to 25 keV
quicklook
20 October 2015 
09:50 - 09:55
Group of high freq. (> 1 GHz) pulsations?quicklook
21 October 2015 
11:13 - 11:20
Small group of metric type IIITiny brightening in NOAA AR 12436quicklook
21 October 2015 
11:50 - 12:05
Group of type III bursts and high frequency continuum-like emission 
Possible high frequency type II (F+H band) 
Continues after 12:05 with weak emissions at high and low freq. (type IV), until 13:00
C2.6 flare in NOAA AR 12436 
RHESSI observations up to 100 keV
quicklook
21 October 2015 
13:55 - 14:00
Complex groups of type III 
Fine structures
C1.7 flare in NOAA AR 12436 
RHESSI observations up to 50 keV
quicklook
22 October 2015 
10:16 - 10:21
Small group of type J bursts and possibly narrow band type III burstsC1.1 flare in NOAA AR 12437? (not reported) 
RHESSI observations up to 50 keV
quicklook
22 October 2015 
12:56 - 13:01
Group of type U/J bursts?quicklook
26 October 2015 
10:24 - 10:29
Zebra bursts between 900 and 1500 MHz 
Group of type III bursts/broad band pulsations below 600 MHz
C2.2 flare in NOAA AR 12437 
RHESSI data up to 25 keV
quicklook
28 October 2015 
09:32 - 09:38
Spikes, pulsations, patchy bursts and metric part of IP type III bursts (below 600 MHz)C1.9 flare in NOAA AR 12436 (close to limb) 
RHESSI observation up to 25 keV
quicklook
04 November 2015 
08:35 - 08:40
Small groups of type III burstsSmall flaring in NOAA AR 12445, TBCquicklook
04 November 2015 
08:55 - 09:02
High freq. continuum and low freq. group of narrow band type III-like burstsC4.6 flare in NOAA AR 12445 
RHESSI and Fermi observations up to 100 keV
quicklook
04 November 2015 
09:20 - 09:30
Group of type III bursts with continuation to IP spaceSmall flaring in NOAA AR 12445, TBCquicklook
04 November 2015 
12:00 - 12:06
High frequency type II (>700 MHz)M2.5 flare in NOAA AR 12445 (limb event) 
RHESSI data up to 300 keV
quicklook
04 November 2015 
13:40 - 15:30
High frequency type IV burstM3.7 flare in NOAA AR 12443 
Partial observations with RHESSI up to 100 keV
13:30 - 14:00 
14:00 - 14:30 
14:30 - 15:00 
15:00 - 15:30
09 November 2015 
13:40 - 14:10 
(partial radio observations due to telescope tracking problems)
PulsationsM3.9 flare in NOAA AR 12449quicklook
09 November 2015 
14:35 - 15:30 
(partial radio observations due to telescope tracking problems)
Type IVM3.9 flare in NOAA AR 12449

14:35 - 15:00

15:00 - 15:30

07 December 2015 
14:40 - 14:55
Type IV-like, looks like a pseudo-type II 
Possibly precursor of type II burst seen in CALLISTO
Limb eruption/CME (East limb)quicklook
14 December 2015 
14:05 - 14:15
Loose group of type III burstsB7.6 flare in NOAA AR 12470 
RHESSI observations up to 25 keV
quicklook
19 December 2015 
12:55 - 13:15
Possibly type IV, looks like a pseudo-type II, high frequency (1500 MHz) 
Type II in Metric range (CALLISTO)
Limb eruption/CME (East limb), occulted flare 
RHESSI observations up to 25 keV
quicklook
27 December 2015 
11:55 - 12:05
High freq. counterpart of metric (CALLISTO) type IIIB9.7 flare in NOAA AR 12473 
Fermi observations up to 50 keV
quicklook
28 December 2015 
11:20 - 12:25
High frequency type IV 
Pulsations, fiber bursts and Zebra
M1.8 flare in NOAA 12473 AR 
Very partial RHESSI observations

11:20 - 11:50

11:50 - 12:25

07 January 2016 
12:35 - 12:45
Group of type III burstsB4.3 flare in NOAA AR 12480 
RHESSI up to 25 keV
quicklook
15 January 2016 
13:25 - 13:30
Small group of type III like bursts 
Reverse drift
B5.1 flare in NOAA AR 12480 
RHESSI up to 25 keV
quicklook
12 February 2016 
10:35 - 10:50
Small group of type J-U like bursts, isolated type III-like, short high frequency continuum-like emissionM1.0 flare in NOAA AR 12497 
RHESSI observations up to 50 keV
quicklook
13 February 2016 
08:25 - 08:35
Small group of narrow band type III bursts & short high frequency continuum-like emissionC1.1 flare in NOAA AR 12497 
RHESSI observations up to 25 keV
quicklook
14 February 2016 
09:33 - 09:38
Group of high freq. type III(/U?)Probably linked to small flaring activity in NOAA AR 112497 
RHESSI observations up to 25 keV
quicklook
14 February 2016 
10:10 - 10:20
Small group of high freq. type III like burstsC6.9 flare in NOAA AR 12497 
RHESSI observations up to 50 keV? (TBC)
quicklook
06 March 2016 
07:41 - 07:46
Nice groups of type III (with metric counterpart, CALLISTO observations)B-class flares in NOAA AR 12512quicklook
06 March 2016 
09:20 - 09:45
Groups of decimetric type III and pulsationsB5.1 flare in NOAA 12512 
No RHESSI
quicklook
14 April 2016 
13:15 - 13:30
Group of decimetric type III 
Lots of structures 
High frequency continuum-like emission
C1.8 flare in NOAA AR 12529 
No RHESSI
quicklook
15 April 2016 
13:25 - 13:30
Group of decimetric type III 
Structures and reverse drift bursts
Small flare in AR 12529 (from SDO observations)quicklook
28 April 2016 
08:45 - 08:55
Group of type III burstsC1.7 flare in NOAA AR 12535 
No RHESSI
quicklook
28 April 2016 
12:45 - 12:55
Group of type III like burstsC1.9 flare in NOAA AR 12535 
No RHESSI
quicklook
02 May 2016 
08:34 - 08:40
Group of type IIIs (with reverse drift), & high frequency burst 
Low frequency type II (CALLISTO)
C3.8 flare. Limb event (East Limb) 
RHESSI observations up to 50 keV
quicklook
14 May 2016 
09:25 - 09:40
Groups of type IIIs, pulsationsC2.5 flare in NOAA AR 12543 
RHESSI observations up to 25 keV
quicklook
14 May 2016 
11:30 - 11:40
Group of type IIIsC7.54 flare in NOAA AR 12543 
RHESSI observations up to 50 keV
quicklook
21 May 2016 
13:55 - 14:05
Decimetric type IIIs/pulsations, patchy emissionsC1.0 flare in NOAA AR 12546 
No RHESSI
quicklook
30 May 2016 
07:33 - 07:38
Type II burstC1.4 flare in NOAA AR 12550; Nice EUV wave; 
RHESSI and Fermi observations up to 25 keV
quicklook
15 June 2016 
13:00 - 13:10
Group of type III burstsB4.2 flare on West limb 
No RHESSI data
quicklook
19 June 2016 
11:45 - 12:10
Decimetric pulsations, type IIIsC1.7 flare in NOAA AR 12558 
No RHESSI
quicklook
07 July 2016 
07:52 - 08:00
Faint decimetric type IIIsC5.1 flare in unnumbered NOAA regionquicklook
18 July 2016 
08:10 - 08:20
Spikes, high freq. burst and pulsationsC4.4 flare in NOAA AR 12565 
Fermi observation up to 25 keV
quicklook
19 July 2016 
13:55 - 14:10
Spikes on high frequency continuum-like emission, pulsationsC1.4 flare in NOAA AR 12565quicklook
21 July 2016 
12:49 - 12:55
Spikes, high frequency continuum-like emission, pulsations, patchy bursts and type IIIsC9.1 flare in NOAA AR 12567quicklook
26 July 2016 
07:40 - 07:47
Type IIIs & pulsationsB2.2 flare on West limb 
RHESSI observations up to 12 keV
quicklook
08 August 2016 
08:40 - 09:00
Pulsations, group of type IIIsC2.8 flare in NOAA AR 12572 
Fermi data up to 50 keV
quicklook
08 August 2016 
10:38 - 10:43
Pulsations/continuum pulsesC5.6 flare in NOAA AR 12574quicklook