HF Propagation on QRZCQ - The database for radio hams

Sun data and propagation

Current HF propagation

TODAYS SUN DATA AND HF PROPAGATION

Todays sun data		Latest EIT-304 image // Sun images from NASA
Flux index:	153
Spot number:	58
X-Ray index:	75.2
A index:	84
Kp index:	7.67

Conditions 00-10MHz:	Fair
Conditions 10-20MHz:	Fair
Conditions 20-30MHz:	Fair
We are working on the algorithm, conditions shown here may not correlate with real conditions. The best check is always to power up your HF rig and listen on every band to be sure!

GRAPHICAL SUN DATA HISTORY

PROPAGATION BASED ON WSPRNET* (ALPHA)

Probability of QSO on 13cm between EU and EU is 70%
Probability of QSO on 23cm between OC and OC is 46%
Probability of QSO on 23cm between AS and AS is 100%
Probability of QSO on 70cm between AS and AS is 44%
Probability of QSO on 2m between AS and AS is 75%
Probability of QSO on 2m between NA and NA is 20%
Probability of QSO on 6m between EU and EU is 23%
Probability of QSO on 6m between NA and NA is 35%
Probability of QSO on 10m between OC and AS is 17%
Probability of QSO on 10m between EU and NA is 1%
Probability of QSO on 10m between SA and NA is 35%
Probability of QSO on 10m between SA and AF is 34%
Probability of QSO on 12m between SA and AF is 16%
Probability of QSO on 12m between NA and AF is 20%
Probability of QSO on 12m between SA and NA is 23%
Probability of QSO on 12m between AS and OC is 22%
Probability of QSO on 15m between SA and NA is 10%
Probability of QSO on 15m between OC and NA is 18%
Probability of QSO on 15m between AS and OC is 4%
Probability of QSO on 15m between NA and SA is 9%
Probability of QSO on 15m between NA and EU is 9%
Probability of QSO on 15m between SA and AF is 41%
Probability of QSO on 15m between NA and AF is 35%
Probability of QSO on 17m between OC and NA is 32%
Probability of QSO on 17m between OC and AF is 6%
Probability of QSO on 17m between SA and AF is 24%
Probability of QSO on 17m between AF and NA is 9%
Probability of QSO on 17m between AS and OC is 9%
Probability of QSO on 17m between SA and OC is 33%
Probability of QSO on 17m between SA and NA is 13%
Probability of QSO on 17m between NA and EU is 4%
Probability of QSO on 17m between NA and AF is 31%
Probability of QSO on 20m between OC and AS is 2%
Probability of QSO on 20m between AS and OC is 9%
Probability of QSO on 20m between AF and OC is 56%
Probability of QSO on 20m between OC and AF is 8%
Probability of QSO on 20m between NA and OC is 7%
Probability of QSO on 20m between SA and EU is 11%
Probability of QSO on 20m between SA and AF is 29%
Probability of QSO on 20m between NA and EU is 12%
Probability of QSO on 20m between SA and NA is 21%
Probability of QSO on 20m between NA and AS is 25%
Probability of QSO on 20m between OC and NA is 54%
Probability of QSO on 20m between NA and AF is 25%
Probability of QSO on 30m between SA and EU is 6%
Probability of QSO on 30m between EU and NA is 2%
Probability of QSO on 30m between NA and AF is 8%
Probability of QSO on 30m between OC and AF is 45%
Probability of QSO on 30m between OC and NA is 72%
Probability of QSO on 30m between AF and SA is 15%
Probability of QSO on 30m between AS and EU is 1%
Probability of QSO on 30m between AS and AF is 4%
Probability of QSO on 30m between EU and OC is 5%
Probability of QSO on 30m between AF and NA is 14%
Probability of QSO on 30m between NA and OC is 10%
Probability of QSO on 30m between EU and AF is 43%
Probability of QSO on 40m between EU and AS is 18%
Probability of QSO on 40m between EU and SA is 13%
Probability of QSO on 40m between NA and EU is 22%
Probability of QSO on 40m between AF and OC is 36%
Probability of QSO on 40m between AS and EU is 14%
Probability of QSO on 40m between AS and AF is 18%
Probability of QSO on 40m between OC and NA is 75%
Probability of QSO on 40m between EU and OC is 6%
Probability of QSO on 40m between EU and AF is 47%
Probability of QSO on 60m between EU and AF is 36%
Probability of QSO on 60m between AS and EU is 11%
Probability of QSO on 60m between AS and AF is 40%
Probability of QSO on 60m between AS and NA is 6%
Probability of QSO on 80m between EU and AF is 42%
Probability of QSO on 80m between EU and NA is 7%
Probability of QSO on 80m between EU and SA is 23%
Probability of QSO on 160m between EU and SA is 3%

* Propagation probability based on data from WSPRnet (Weak Signal Propagation Reporter Network) Spot Database

PROPAGATION BASED ON DX-CLUSTER

Conditions at 00-10MHz (59%) based on DX-Cluster
Spots de	dx AF	dx AS	dx EU	dx NA	dx OC	dx SA
AF	1%	1%	1%	0%	0%	0%
AS	0%	1%	2%	1%	0%	0%
EU	1%	3%	86%	1%	1%	0%
NA	0%	0%	1%	6%	0%	0%
OC	0%	0%	0%	0%	1%	0%
SA	0%	0%	0%	0%	0%	1%

Conditions at 10-20MHz (27%) based on DX-Cluster
Spots de	dx AF	dx AS	dx EU	dx NA	dx OC	dx SA
AF	0%	0%	0%	0%	0%	0%
AS	0%	1%	1%	1%	1%	0%
EU	2%	3%	13%	6%	1%	2%
NA	2%	1%	3%	60%	1%	1%
OC	0%	0%	0%	1%	3%	0%
SA	0%	1%	2%	1%	0%	1%

Conditions at 20-30MHz (11%) based on DX-Cluster
Spots de	dx AF	dx AS	dx EU	dx NA	dx OC	dx SA
AF	1%	0%	0%	5%	0%	1%
AS	1%	1%	0%	0%	0%	0%
EU	3%	0%	2%	1%	0%	2%
NA	2%	0%	1%	38%	0%	11%
OC	0%	0%	0%	1%	2%	0%
SA	3%	1%	2%	19%	0%	6%

Conditions at 50-54MHz (5%) based on DX-Cluster
Spots de	dx AF	dx AS	dx EU	dx NA	dx OC	dx SA
AF	0%	0%	0%	0%	0%	0%
AS	0%	0%	0%	0%	0%	0%
EU	0%	0%	16%	0%	0%	2%
NA	0%	0%	0%	69%	0%	8%
OC	0%	0%	0%	0%	0%	0%
SA	0%	0%	2%	0%	0%	2%

HISTORICAL PROPAGATION DATA

Last 30 days of HF propagation

2025-04-16 12:00:00	153	58	75.2	0	34	4.67	Fair	Fair	Fair
2025-04-16 00:00:00	152	86	75.2	0	34	6.33	Poor	Fair	Fair
2025-04-15 12:00:00				0			Fair	Good	Good
2025-04-15 00:00:00	164	80	75.2	0	18	4.00	Fair	Fair	Fair
2025-04-14 12:00:00	164	80	75.2	0	15	2.00	Normal	Normal	Normal
2025-04-14 00:00:00	165	103	75.2	0	15	2.33	Fair	Good	Good
2025-04-13 12:00:00	165	103	75.2	0	20	2.33	Fair	Good	Good
2025-04-13 00:00:00				0			Fair	Normal	Normal
2025-04-12 12:00:00	170	120	75.2	0	18	3.33	Fair	Good	Good
2025-04-12 00:00:00	153	112	75.2	0	18	4.33	Fair	Normal	Normal
2025-04-11 12:00:00	153	112	75.2	0	17	2.33	Fair	Good	Good
2025-04-11 00:00:00	167	113	75.2	0	17	4.33	Fair	Normal	Normal
2025-04-10 12:00:00	167	113	75.2	0	22	2.33	Fair	Good	Good
2025-04-10 00:00:00				0			Fair	Good	Good
2025-04-09 12:00:00				0			Fair	Normal	Normal
2025-04-09 00:00:00	162	167	75.2	0	24	3.67	Fair	Normal	Excellent
2025-04-08 12:00:00	162	167	75.2	0	13	2.33	Fair	Normal	Excellent
2025-04-08 00:00:00	167	140	75.2	0	13	3.33	Fair	Good	Good
2025-04-07 12:00:00	167	140	75.2	0	20	1.67	Fair	Good	Good
2025-04-07 00:00:00	184	160	75.2	0	20	3.33	Normal	Excellent	Excellent
2025-04-06 12:00:00	184	160	75.2	0	40	3.33	Normal	Excellent	Excellent
2025-04-06 00:00:00	180	163	75.2	0	40	4.33	Poor	Fair	Good
2025-04-05 12:00:00	180	163	75.2	0	33	4.33	Poor	Fair	Good
2025-04-05 00:00:00	178	124	75.2	0	33	4.67	Fair	Normal	Normal
2025-04-04 12:00:00	178	124	75.2	0	26	4.00	Fair	Normal	Normal
2025-04-04 00:00:00	180	158	75.2	0	26	4.67	Fair	Normal	Normal
2025-04-03 12:00:00	180	158	75.2	0	22	3.67	Fair	Good	Good
2025-04-03 00:00:00				0			Normal	Excellent	Excellent
2025-04-02 12:00:00	182	147	75.2	0	5	4.00	Normal	Excellent	Excellent
2025-04-02 00:00:00	172	151	75.2	0	5	2.00	Normal	Excellent	Excellent
2025-04-01 12:00:00	172	151	75.2	0	6	1.00	Good	Excellent	Excellent
2025-04-01 00:00:00	171	111	75.2	0	6	1.00	Good	Excellent	Excellent
2025-03-31 12:00:00	171	111	75.2	0	6	2.67	Normal	Excellent	Excellent
2025-03-31 00:00:00				0			Good	Excellent	Excellent
2025-03-30 12:00:00	157	107	75.2	0	9	1.67	Normal	Excellent	Excellent
2025-03-30 00:00:00	160	80	75.2	0	9	1.00	Excellent	Excellent	Excellent
2025-03-29 12:00:00	160	80	75.2	0	16	2.00	Normal	Normal	Normal
2025-03-29 00:00:00	153	72	75.2	0	16	3.67	Normal	Normal	Normal
2025-03-28 12:00:00	153	72	75.2	0	33	2.33	Normal	Normal	Normal
2025-03-28 00:00:00	152	63	75.2	0	33	3.67	Normal	Normal	Normal
2025-03-27 12:00:00	152	63	75.2	0	46	4.00	Fair	Fair	Fair
2025-03-27 00:00:00	156	58	75.2	0	46	4.67	Fair	Fair	Fair
2025-03-26 12:00:00	156	58	75.2	0	15	3.33	Normal	Normal	Normal
2025-03-26 00:00:00	156	85	75.2	0	15	3.33	Fair	Good	Good
2025-03-25 12:00:00	156	85	75.2	0	19	3.00	Fair	Good	Good
2025-03-25 00:00:00	168	110	75.2	0	19	1.67	Fair	Good	Good
2025-03-24 12:00:00	168	110	75.2	0	10	3.67	Normal	Excellent	Excellent
2025-03-24 00:00:00				0			Fair	Good	Excellent
2025-03-23 12:00:00	178	177	75.2	0	33	1.67	Fair	Normal	Excellent
2025-03-23 00:00:00	165	178	75.2	0	33	4.67	Poor	Fair	Good
2025-03-22 12:00:00	165	178	75.2	0	25	3.00	Fair	Normal	Excellent
2025-03-22 00:00:00	170	139	75.2	0	25	5.33	Fair	Good	Good
2025-03-21 12:00:00	170	139	75.2	0	6	2.33	Normal	Excellent	Excellent
2025-03-21 00:00:00				0			Fair	Good	Excellent
2025-03-20 12:00:00	180	170	75.2	0	23	1.67	Fair	Normal	Excellent
2025-03-20 00:00:00	184	191	75.2	0	23	3.33	Fair	Good	Excellent
2025-03-19 12:00:00	184	191	75.2	0	12	3.00	Normal	Excellent	Excellent
2025-03-19 00:00:00	204	189	75.2	0	12	2.33	Normal	Excellent	Excellent
2025-03-18 12:00:00				0			Fair	Good	Excellent
2025-03-18 00:00:00	186	190	75.2	0	16	3.00	Fair	Good	Excellent
Date and Time▲	Flux idx.▲	Spot num.▲	X-Ray idx.▲	X-Ray num▲	A-Index▲	K-Index▲	00-10MHz▲	10-20MHz▲	20-30MHz▲