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 30 June 2012
⇐20120629 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20120701⇒

NOAA
5 Active Regions
11512
11513
11514
11515
11516
SMART
No Data
CHARM
No Data
Welcome to the Flare Prediction System. This page gives the active regions on the Sun today together with each regions probability for producing C-, M-, or X-class events. The flare probabilities were calculated using NOAA Space Weather Prediction Center data from nearly eight years of data starting November 1988 and ending June 1996. The percentage probabilities are based on the number of flares produced by regions classified using the McIntosh classification scheme (McIntosh, P., 1990, Solar Physics, 125, 251) during cycle 22. For example, between November 1988 and June 1996 there were 302 regions classified Eai. As this class produced 62 M-class events, the mean M-class flare rate is ~62/302 or ~0.21 flares per day. Assuming the number of flares per unit time is governed by Poisson statistics, we can estimate a flaring probability for the following 24-hours using P( one or more flares ) = 1 - exp( -mean ), i.e., P = 1 - exp( -0.21 ) ~ 0.19, or 19% for an Eai class region to produce one or more M-class flares in the next 24-hours. See Wheatland, M. S., 2001, Solar Physics, 203, 87 and Moon et al., 2001, Journal of Geophysical Research-Space Physics, 106(A12) 29951 for further details.

Click here for a description of the various active region classifications from the Royal Observatory of Belgium.
Region Flare Probabilities (%)
Number McIntosh C-class M-class X-class
11512 Dki 41(0) 20(0) 3(0)
11513 Dso 20(0) 4(0) 0(0)
11514 Dao 23(0) 6(0) 0(0)
11515 Dkc 51(0) 30(0) 8(0)
11516 Dro 17(0) 5(0) 0(0)

NOTE: Values in parantheses/brackets give the NOAA/SWPC forecast probabilities for the occurrence of one or more C-, M-, or X-class flares. When viewed in real-time and before 22:00 UT, 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), 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 comments or questions regarding this research.

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Today's NOAA Active Regions
Group Number
Location
Hale
Class
McIntosh Class
Sunspot
Area
Number of Spots
Flares
History
11512 S16W30
(455",-300") 		β/βγ Dki/Dki 0290/0250 16/17 /C1.1(18:35)
11513 N17E16
(-249",232") 		βγ/βγ Dso/Dso 0100/0090 08/05 C1.6(09:48)
C2.7(10:48)
C1.4(21:21)
M1.0(12:48)
M1.6(18:26)
/C1.4(00:33)
C6.7(01:18)
C1.3(05:55)
C1.8(23:30)
M2.2(09:13)
11514 S16E16
(-250",-304") 		β/β Dao/Bxo 0060/0010 11/05 C4.4(08:22)
11515 S17E29
(-438",-316") 		βγ/β Dkc/Dso 0310/0180 08/06 C1.0(04:35)
/C4.6(04:09)
C6.2(06:43)
C2.9(08:19)
11516 N13E29
(-447",171") 		β/- Dro/--- 0030/---- 04/-- -

Events not associated with currently named NOAA regions: C1.3(16:02) /C1.0(16:27)

Note: The tabulated data are based on the most recent NOAA/USAF Active Region Summary issued on 30-Jun-2012 00:30 UT , the values to the right of the forward slashes representing yesterdays values or events. Regions with no data in above property fields have decayed and exhibit no spots. The region positions are valid on 30-Jun-2012 23:00 UT .