Archive
Every day at 17:00 UTC an observer/forecaster on duty at SPS issued a probabilistic flare forecast for three solar flare classes C, M and X. These flare classes are defined according the peak of the flux of soft X-ray radiation produced by the flare. The forecast consist of two parts: full disk per visible active regions. Full disc flare forecast then combines the probabilities of flare occurence in visible active regions into a one global forecast. The forecast is human generated and is valid for next 24 hours from the time of issue. This product provides: percentual probabilities of flares occurence (C/M/X classes) for full disc; for active regions NOAA number (NOAA no.), NOAA location, SPS internal archive number (Ondřejov no.), Ondřejov location, percentual flare probabilities (C/M/X classes).
Data in the archive are available from January 01, 2022.
Date and time of observation: 2026-03-05 06:29 UTC
Issued: 2026-03-05 17:00 UTC
Observer: Karolina Knesplova
Seeing conditions: 5
Analyzed data: Ondrejov Observatory
Relative sunspot number: 88
Activity level: low
FULL DISK
ACTIVE REGIONS
| NOAA NUMBER |
NOAA LOCATION |
ONDREJOV NUMBER |
ONDREJOV LOCATION |
C % |
M % |
X % |
| 4378 |
N16W18@2026-03-05 04:30 UTC |
036 |
N16W21@2026-03-05 06:29 UTC |
45 |
20 |
5 |
| 4381 |
N08E13@2026-03-05 04:30 UTC |
039 |
N07E07@2026-03-05 06:29 UTC |
85 |
30 |
10 |
| 4383 |
N15W58@2026-03-05 04:30 UTC |
041 |
N14W52@2026-03-05 06:29 UTC |
30 |
5 |
1 |
| 4384 |
N09E37@2026-03-05 04:30 UTC |
042 |
N09E32@2026-03-05 06:29 UTC |
99 |
35 |
10 |
| 4385 |
S08E28@2026-03-05 04:30 UTC |
043 |
S08E26@2026-03-05 06:29 UTC |
40 |
15 |
5 |
Date and time of observation: 2026-03-04 07:53 UTC
Issued: 2026-03-04 17:00 UTC
Observer: Karolina Knesplova
Seeing conditions: 2
Analyzed data: Ondrejov Observatory
Relative sunspot number: 44
Activity level: low
FULL DISK
ACTIVE REGIONS
| NOAA NUMBER |
NOAA LOCATION |
ONDREJOV NUMBER |
ONDREJOV LOCATION |
C % |
M % |
X % |
| 4378 |
N15W07@2026-03-04 08:30 UTC |
036 |
N16W08@2026-03-04 07:53 UTC |
60 |
3 |
5 |
| 4381 |
N08E25@2026-03-04 08:30 UTC |
039 |
N07E19@2026-03-04 07:53 UTC |
95 |
35 |
15 |
| 4384 |
N10E48@2026-03-04 08:30 UTC |
042 |
N09E44@2026-03-04 07:53 UTC |
99 |
40 |
15 |
Date and time of observation: 2026-03-03 06:38 UTC
Issued: 2026-03-03 17:00 UTC
Observer: Karolina Knesplova
Seeing conditions: 5
Analyzed data: Ondrejov Observatory
Relative sunspot number: 96
Activity level: low
FULL DISK
ACTIVE REGIONS
| NOAA NUMBER |
NOAA LOCATION |
ONDREJOV NUMBER |
ONDREJOV LOCATION |
C % |
M % |
X % |
| 4378 |
N15E10@2026-03-03 04:30 UTC |
036 |
N16E05@2026-03-03 06:38 UTC |
60 |
3 |
5 |
| 4379 |
S19E11@2026-03-03 04:30 UTC |
037 |
S17E09@2026-03-03 06:38 UTC |
10 |
1 |
1 |
| 4380 |
S21E22@2026-03-03 04:30 UTC |
038 |
S21E21@2026-03-03 06:38 UTC |
40 |
15 |
5 |
| 4381 |
N08E39@2026-03-03 04:30 UTC |
039 |
N07E33@2026-03-03 06:38 UTC |
95 |
35 |
15 |
| 4383 |
N15W26@2026-03-03 04:30 UTC |
041 |
N14W30@2026-03-03 06:38 UTC |
10 |
1 |
1 |
| 4384 |
N10E64@2026-03-03 04:30 UTC |
042 |
N10E58@2026-03-03 06:38 UTC |
99 |
40 |
15 |
Date and time of observation: 2026-03-02 06:48 UTC
Issued: 2026-03-02 17:00 UTC
Observer: Karolina Knesplova
Seeing conditions: 5
Analyzed data: Ondrejov Observatory
Relative sunspot number: 106
Activity level: low
FULL DISK
ACTIVE REGIONS
| NOAA NUMBER |
NOAA LOCATION |
ONDREJOV NUMBER |
ONDREJOV LOCATION |
C % |
M % |
X % |
| 4378 |
N16E18@2026-03-02 04:30 UTC |
036 |
N15E18@2026-03-02 06:48 UTC |
55 |
25 |
5 |
| 4379 |
S19E25@2026-03-02 04:30 UTC |
037 |
S18E23@2026-03-02 06:48 UTC |
10 |
1 |
1 |
| 4380 |
S21E32@2026-03-02 04:30 UTC |
038 |
S21E35@2026-03-02 06:48 UTC |
55 |
25 |
5 |
| 4381 |
N08E52@2026-03-02 04:30 UTC |
039 |
N07E46@2026-03-02 06:48 UTC |
99 |
35 |
15 |
| 4382 |
N22W51@2026-03-02 04:30 UTC |
040 |
N22W48@2026-03-02 06:48 UTC |
5 |
1 |
1 |
| 4383 |
N15W13@2026-03-02 04:30 UTC |
041 |
N13W14@2026-03-02 06:48 UTC |
10 |
1 |
1 |
| 4384 |
N10E72@2026-03-02 04:30 UTC |
042 |
N10E74@2026-03-02 06:48 UTC |
99 |
35 |
15 |
Date and time of observation: 2026-03-01 08:00 UTC
Issued: 2026-03-01 17:00 UTC
Observer: Karolina Knesplova
Seeing conditions: 1
Analyzed data: Ondrejov Observatory
Relative sunspot number: 70
Activity level: low
FULL DISK
ACTIVE REGIONS
| NOAA NUMBER |
NOAA LOCATION |
ONDREJOV NUMBER |
ONDREJOV LOCATION |
C % |
M % |
X % |
| 4378 |
N17E36@2026-03-01 04:30 UTC |
036 |
N15E30@2026-03-01 08:00 UTC |
55 |
25 |
5 |
| 4380 |
S21E46@2026-03-01 04:30 UTC |
038 |
S11E48@2026-03-01 08:00 UTC |
75 |
35 |
10 |
| 4381 |
N07E66@2026-03-01 04:30 UTC |
039 |
N06E58@2026-03-01 08:00 UTC |
70 |
30 |
10 |
| - |
-@- UTC |
040 |
N21W39@2026-03-01 08:00 UTC |
10 |
1 |
1 |
| - |
-@- UTC |
041 |
N13W03@2026-03-01 08:00 UTC |
10 |
1 |
1 |
Date and time of observation: 2026-02-28 06:55 UTC
Issued: 2026-02-28 17:00 UTC
Observer: Karolina Knesplova
Seeing conditions: 5
Analyzed data: Ondrejov Observatory
Relative sunspot number: 53
Activity level: low
FULL DISK
ACTIVE REGIONS
| NOAA NUMBER |
NOAA LOCATION |
ONDREJOV NUMBER |
ONDREJOV LOCATION |
C % |
M % |
X % |
| 4378 |
N17E48@2026-02-28 04:30 UTC |
036 |
N16E43@2026-02-28 06:55 UTC |
60 |
30 |
5 |
| 4379 |
S17E47@2026-02-28 04:30 UTC |
037 |
S16E44@2026-02-28 06:55 UTC |
20 |
5 |
1 |
| 4380 |
S20E57@2026-02-28 04:30 UTC |
038 |
S21E62@2026-02-28 06:55 UTC |
70 |
35 |
10 |
| 4381 |
N08E74@2026-02-28 04:30 UTC |
039 |
N07E73@2026-02-28 06:55 UTC |
30 |
5 |
1 |
Date and time of observation: 2026-02-27 06:43 UTC
Issued: 2026-02-27 17:00 UTC
Observer: Vlastislav Feik
Seeing conditions: 4
Analyzed data: Ondrejov Observatory
Relative sunspot number: 41
Activity level: low
FULL DISK
ACTIVE REGIONS
| NOAA NUMBER |
NOAA LOCATION |
ONDREJOV NUMBER |
ONDREJOV LOCATION |
C % |
M % |
X % |
| 4378 |
N16E62@2026-02-27 04:30 UTC |
036 |
N16E57@2026-02-27 06:43 UTC |
30 |
5 |
1 |
| 4379 |
S17E61@2026-02-27 04:30 UTC |
037 |
S16E57@2026-02-27 06:43 UTC |
55 |
25 |
10 |
| 4380 |
S20E71@2026-02-27 04:30 UTC |
038 |
S20E75@2026-02-27 06:43 UTC |
75 |
35 |
15 |
Date and time of observation: 2026-02-26 06:45 UTC
Issued: 2026-02-26 17:00 UTC
Observer: Vlastislav Feik
Seeing conditions: 3
Analyzed data: Ondrejov Observatory
Relative sunspot number: 40
Activity level: low
FULL DISK
ACTIVE REGIONS
| NOAA NUMBER |
NOAA LOCATION |
ONDREJOV NUMBER |
ONDREJOV LOCATION |
C % |
M % |
X % |
| 4378 |
N17E70@2026-02-26 08:30 UTC |
036 |
N16E71@2026-02-26 06:45 UTC |
30 |
5 |
1 |
| 4379 |
S16E69@2026-02-26 08:30 UTC |
037 |
S16E71@2026-02-26 06:45 UTC |
30 |
5 |
1 |
| - |
-@- UTC |
038 |
S20E85@2026-02-26 06:45 UTC |
75 |
45 |
15 |
Date and time of observation: 2026-02-25 06:47 UTC
Issued: 2026-02-25 17:00 UTC
Observer: Vlastislav Feik
Seeing conditions: 4
Analyzed data: Ondrejov Observatory
Relative sunspot number: 11
Activity level: very low to low
FULL DISK
ACTIVE REGIONS
| NOAA NUMBER |
NOAA LOCATION |
ONDREJOV NUMBER |
ONDREJOV LOCATION |
C % |
M % |
X % |
| - |
-@- UTC |
036 |
N15E82@2026-02-25 06:47 UTC |
30 |
5 |
1 |
Date and time of observation: 2026-02-24 07:53 UTC
Issued: 2026-02-24 17:00 UTC
Observer: Vlastislav Feik
Seeing conditions: 3
Analyzed data: Ondrejov Observatory
Relative sunspot number: 0
Activity level: very low to low
FULL DISK
ACTIVE REGIONS
| NOAA NUMBER |
NOAA LOCATION |
ONDREJOV NUMBER |
ONDREJOV LOCATION |
C % |
M % |
X % |
| - |
-@- UTC |
- |
--@2026-02-24 07:53 UTC |
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- |
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