2 April 2021
⇐20210401 ⇐Week ⇐Rotation Today Rotation⇒ Week⇒ 20210403⇒

NOAA
2 Active Regions
12811
12812

Flare Forecast
Flare Prediction System
MM MotD

Coronal Holes


Today's Coronal Hole Properties
CHIMERA Number
Centroid
[Heliocentric]
Width
[°]
Area
[%]
< B >
[G]
< Φ >
[Mx]
1 W02S04
(39",40") 		E49-W55
(104) 		17.8 0.3 7.1e20
2 W32S10
(500",-73") 		W26-W38
(12) 		0.5 0.8 7.7e19
3 W32S79
(93",-921") 		E05-W74
(79) 		0.3 -0.8 -1.3e20
4 E55N05
(-787",139") 		E60-E50
(10) 		0.2 -0.4 -2.5e19
5 W03S13
(51",-113") 		E01-W05
(6) 		0.1 -1.3 -1.5e19
6 E48S24
(-649",-322") 		E49-E45
(4) 		0.1 -1.1 -1.5e19
7 E11N13
(-180",323") 		E13-E09
(4) 		0.1 -1.8 -1.6e19

Note: Solar Monitor's coronal hole segmentations are performed by CHIMERA, a copy of which is available at: github.com/TCDSolar/CHIMERA.

The operations of the CHIMERA algorithm is described in a peer reviewed paper: arxiv.org/abs/1711.11476.

An extensive copy of coronal hole properties are available at: solarmonitor.org/data.

The latest positions of the coronal holes are given in heliocentric co-ordinates, and the region positions are valid on 2-Apr-2021 19:30 UT .