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8 March 2024
20240307 Week Rotation Today Rotation Week 20240309

NOAA Number McIntosh Class C-class M-class X-class

13591
13599
13600
13602
13603
13604
13605

Hsx/Hsx
Dai/Dsi
Hsx/Hsx
Cso/Cso
Hax/Cso
Hsx/Hsx
Dao/---
MCEVOL
MCSTAT
NOAA
3 5 5
56 66 50
3 5 5
14 17 15
13 8 10
3 5 5
... 36 25
MCEVOL
MCSTAT
NOAA
0 3 1
12 16 10
0 3 1
1 3 1
0 3 1
0 3 1
... 7 5
MCEVOL
MCSTAT
NOAA
0 0 1
0 2 1
0 0 1
0 0 1
0 0 1
0 0 1
... 0 1

Solar Monitor's flare prediction system's probabilities are calculated using NOAA Space Weather Prediction Center data. There are two main methods, MCSTAT and MCEVOL, that use sunspot-group McIntosh classifications and Poisson statistics to calculate flaring probabilities valid for a 24-hr period*. The flaring probabilities are calculated using historical data from the periods 1969-1976 & 1988-1996 (MCSTAT) and 1988-2008 (MCEVOL).

MCSTAT – Uses point-in-time McIntosh classifications to calculate Poisson flaring probabilities. Details about the method [1] and forecast verification testing [2] can be found in the following papers:

[1] Gallagher, P. T., Moon, Y.-J., Wang, H., Solar Physics, 209, 171, (2002)
[2] Bloomfield et al., 2012, The Astrophysical Journal Letters, 747, L41

MCEVOL – Uses the evolution of McIntosh classifications over a 24-hr period to calculate Poisson flaring probabilities. Details about the method and flaring rate statistics can be found in the following:

[1] McCloskey, A.E., Gallagher, P.T. & Bloomfield, D.S., Solar Physics, 291, 1711, (2016)

Further Reading:
Wheatland, M. S., 2001, Solar Physics, 203, 87
Moon et al., 2001, Journal of Geophysical Research-Space Physics, 106(A12) 29951


Notes:

'...' = McIntosh class or evolution was not observed in the period over which the Poisson flare rate statistics were determined.
* When viewed in real-time and before 22:00 UT, NOAA predictions are valid up to 22:00 UT on the current date. When viewed in real-time after 22:00 UT (or when viewing past dates), NOAA predictions are valid up to 22:00 UT on the following date. The most recent data can also be found at NOAA's 3-day Space Weather Predictions page.


Please contact Peter Gallagher if you have any queries regarding this research.



Today's/Yesterday's NOAA Active Regions
NOAA Number
Latest
Position
Hale
Class
McIntosh Class
Sunspot Area
[millionths]
Number of Spots
Recent
Flares
13591 S37W91
(771",-578")
α/α Hsx/Hsx 0030/0050 01/01 -
13599 S12W14
(229",-84")
βγδ/βγ Dai/Dsi 0140/0130 16/12 - / C2.7(23:48)
C1.9(22:04)
C1.2(17:35)
C1.3(17:27)
C1.7(17:07)
C2.3(16:45)
C1.0(15:42)
C1.2(13:53)
C3.4(12:18)
C6.3(12:00)
C4.1(10:15)
13600 S18W04
(64",-181")
α/α Hsx/Hsx 0070/0070 03/02 -
13602 N17W25
(391",387")
β/β Cso/Cso 0030/0040 02/03 -
13603 N14E01
(-16",351")
α/β Hax/Cso 0060/0060 02/03 -
13604 N08E31
(-494",237")
α/α Hsx/Hsx 0020/0030 01/01 -
13605 S15E14
(-226",-134")
β/- Dao/--- 0020/---- 04/-- -
13596 N20W85
(904",337")
/α /Axx /0010 /01 -
13601 N14W77
(913",258")
/ / / / C3.5(22:02)
- / C3.5(22:02)

Class (HH:MM) -Today
Class (HH:MM) -Yesterday

Events not associated with currently named NOAA regions: C1.8(10:37) C1.9(22:04) C2.0(09:46) C4.6(23:24)

Note: The tabulated data are based on the most recent NOAA/USAF Active Region Summary issued on 8-Mar-2024 00:30 UT . The greyed out and light-blue entries are values from the previous day. Slashed cells indicate that the active region has no spots. The latest positions of the active regions are given in both heliographic and heliocentric co-ordinates. The region positions are valid on 8-Mar-2024 20:30 UT .