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 10 June 2000
⇐20000609 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20000611⇒

NOAA
8 Active Regions
09026
09028
09030
09032
09033
09034
09035
09036
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
No Prediction Found

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.

IDL Access

Today's NOAA Active Regions
Group Number
Location
Hale
Class
McIntosh Class
Sunspot
Area
Number of Spots
Flares
History
09026 N22W42
(587",348") 		βγ/βγδ Esi/Fai 0400/0470 33/40 M5.2(16:40)
/C2.2(20:31)
09028 N16W91
(907",260") 		β/β Cao/Dao 0050/0070 04/08 -
09030 N12W38
(570",189") 		β/α Dso/Axx 0020/0000 06/01 -
09032 S17W30
(453",-285") 		β/β Cso/Cso 0020/0030 08/08 -
09033 N22E15
(-227",346") 		βγ/β Fkc/Eki 0550/0460 43/30 -
09034 S10E13
(-210",-173") 		α/α Hsx/Hsx 0080/0080 01/01 -
09035 S18W13
(202",-302") 		β/β Dao/Bxo 0030/0020 06/04 -
09036 S23E47
(-637",-376") 		α/α Hax/Hsx 0170/0080 02/01 C1.8(12:16)

Events not associated with currently named NOAA regions: C2.2(05:54) C1.6(09:06) C2.6(10:21)

Note: The tabulated data are based on the most recent NOAA/USAF Active Region Summary issued on 10-Jun-2000 00:30 , 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 10-Jun-2000 23:30.