show styles

 21 April 2021
⇐20210420 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210422⇒

NOAA
4 Active Regions
12816
12817
12818
12815

Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes
 
Main Far-side SDO short-wave SDO long-wave
HMI Mag 20210421 21:58 HMI 6173Å 20210421 22:46 GHN Hα 20210421 22:35
SWAP 174Å 20210421 20:19 AIA 193Å 20210421 23:25 XRT 20210421 04:51
HMI Mag 20210421 21:58 No Time Data Available GONG Farside 20210420 12:00
No Time Data Available AIA 193Å 20210421 23:25 No Time Data Available
HMI Mag 20210421 21:58 AIA 94Å 20210421 23:25 AIA 131Å 20210421 23:25
AIA 171Å 20210421 23:25 AIA 193Å 20210421 23:25 AIA 211Å 20210421 23:27
HMI Mag 20210421 21:58 AIA 304Å 20210421 23:25 AIA 335Å 20210421 23:27
AIA 1600Å 20210421 23:27 AIA 1700Å 20210421 23:27 HMI 6173Å 20210421 22:46


Today's/Yesterday's NOAA Active Regions
NOAA Number
Latest
Position
Hale
Class
McIntosh Class
Sunspot Area
[millionths]
Number of Spots
Recent
Flares
12816 S24W03
(45",-311") 		β/β Cao/Dai 0110/0120 10/08 -
12817 N18W73
(868",317") 		β/β Dai/Bxo 0140/0060 13/08 C1.5(01:18) / -
12818 S17E55
(-749",-232") 		α/- Hsx/--- 0090/---- 01/-- -
12815 S21W88
(890",-337") 		/ / / / -

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

Events not associated with currently named NOAA regions: None

Note: The tabulated data are based on the most recent NOAA/USAF Active Region Summary issued on 21-Apr-2021 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 21-Apr-2021 19:30 UT .