Cycle 25 observations in SDO HMI imagery

Date Time
UT
Location Classification @ 4K N spots @ 1K Image (4K res.)   Comments
20191211 12:00 N17W01 AXX 1    
20191206 06:00 N24W25 CRO 2    
20191124 23:45 S23W01 BXO 1    
20191112 23:45 N33W25 BXO 1    
20191112 12:00 S22E77 BXO 2    
20191110 02:00 N23W34 AXX 1    
20191031 12:00 S27E43 BXO 2  
20191011 23:45 S20W35 BXO 1    
20191005 12:00 N19W15 AXX 1    
20190925 04:00 S27E34 AXX 1    
20190920 23:45 S13W01 AXX 2    
20190913 23:45 N34E11 BXO 2    
20190910 23:45 N28W65 AXX 1    
20190708 23:45 S21E12 BXO 2    
20190708 22:30 S28E12 BXO 2    
20190706 23:45 S27E50 CRO 2    
20190630 23:45 S20W03 CRO 4    
20190630 21:00 N28W41 AXX 1    
20190611 23:45 S21W33 AXX 1    
20190610 21:00 N32E18 BXO 2    
20190523 12:00 N19W20 AXX 1    
20190503 23:45 N28E05 CRO 2    
20190502 10:00 N27W13 AXX 1    
20190501 06:00 N36W32 BXO 3    
20190430 11:00 N31W11 AXX 1    
20190331 14:15 S26W12 AXX 1    
20190331 00:30 N38W09 AXX 1    
20190330 12:00 N28W44 AXX 1    
20190328 15:30 S31E33 BXO 2    
20190309 23:45 S27E19 AXX 1    
20190307 12:00 N38W08 AXX 1    
20190220 23:45 S34E02 AXX 1    
20190217 13:00 S18E17 AXX 1    
20190213 23:45 N15E02 AXX 1    
20190212 21:00 S16W48 CRO 2    
20190211 18:00 S24W02 CRO 4  

 

20190206 04:00
N30E19 AXX 1    
20181227 03:00
N45W04 AXX 1    
20181216 03:00
S20E40
AXX 1    
20181117 20:00
N27E11
BXO 2    
20181108 12:00
N26W18
HRX 1  

Largest cycle 25 spot at this point

20181009 11:30
S29W10
AXX 1    
20181009 11:30
S49E29
AXX 1    
20180531 12:00
S29W51
BXO
2
   
20180409 12:00
S31E09
CRO
2
   
20180219 09:30 N53W18 AXX 1    
20180126 21:00 S37W07 AXX 1   negative polarity spot not visible at 1K
20170910 12:00 N36E09 BXO 2    
20170828 12:00 N43W13 AXX 2   negative polarity spot too small

While smaller spots with the correct polarity alignment of cycle 25 regions have been observed at high latitude locations as early as 2016, this overview will only include spots large enough to have been visible at a 1K resolution. In the case of reversed polarity cycle 24 regions, those that are not at a sufficiently high latitude (ie. 30 degrees or more), are considered most likely to belong to cycle 24 and will not be included in this list until closer to the actual solar cycle minimum (likely to be sometime between January 2019 and July 2019).