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:	117
Spot number:	54
X-Ray index:	75.2
A index:	9
Kp index:	3.67

Conditions 00-10MHz:	Fair
Conditions 10-20MHz:	Poor
Conditions 20-30MHz:	Closed
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 68%
Probability of QSO on 23cm between AS and AS is 98%
Probability of QSO on 70cm between AS and AS is 36%
Probability of QSO on 6m between NA and NA is 83%
Probability of QSO on 6m between EU and EU is 25%
Probability of QSO on 10m between EU and OC is 44%
Probability of QSO on 10m between SA and AF is 7%
Probability of QSO on 10m between NA and OC is 66%
Probability of QSO on 10m between NA and SA is 11%
Probability of QSO on 10m between AS and EU is 1%
Probability of QSO on 10m between NA and AF is 38%
Probability of QSO on 10m between NA and EU is 61%
Probability of QSO on 10m between EU and AF is 29%
Probability of QSO on 12m between AF and SA is 8%
Probability of QSO on 12m between EU and AF is 23%
Probability of QSO on 12m between NA and EU is 76%
Probability of QSO on 12m between NA and AF is 17%
Probability of QSO on 15m between EU and AS is 10%
Probability of QSO on 15m between EU and AF is 13%
Probability of QSO on 15m between SA and NA is 4%
Probability of QSO on 15m between NA and EU is 8%
Probability of QSO on 15m between AF and SA is 47%
Probability of QSO on 15m between AS and AF is 13%
Probability of QSO on 15m between OC and EU is 11%
Probability of QSO on 15m between OC and NA is 3%
Probability of QSO on 17m between EU and AF is 28%
Probability of QSO on 17m between EU and SA is 8%
Probability of QSO on 17m between AF and NA is 1%
Probability of QSO on 17m between SA and NA is 25%
Probability of QSO on 17m between EU and NA is 2%
Probability of QSO on 17m between OC and NA is 5%
Probability of QSO on 17m between AF and SA is 22%
Probability of QSO on 20m between NA and AS is 1%
Probability of QSO on 20m between EU and SA is 18%
Probability of QSO on 20m between SA and NA is 27%
Probability of QSO on 20m between EU and AF is 19%
Probability of QSO on 20m between NA and EU is 41%
Probability of QSO on 20m between NA and AF is 59%
Probability of QSO on 20m between AF and SA is 10%
Probability of QSO on 20m between EU and NA is 35%
Probability of QSO on 20m between OC and NA is 9%
Probability of QSO on 20m between OC and AS is 21%
Probability of QSO on 30m between AF and NA is 75%
Probability of QSO on 30m between EU and OC is 2%
Probability of QSO on 30m between EU and SA is 16%
Probability of QSO on 30m between OC and NA is 33%
Probability of QSO on 30m between EU and AF is 6%
Probability of QSO on 40m between AF and OC is 13%
Probability of QSO on 40m between NA and EU is 8%
Probability of QSO on 40m between EU and SA is 27%
Probability of QSO on 40m between EU and NA is 100%
Probability of QSO on 40m between OC and NA is 26%
Probability of QSO on 80m between AF and OC is 10%
Probability of QSO on 80m between OC and NA is 6%
Probability of QSO on 80m between EU and NA is 94%

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

PROPAGATION BASED ON DX-CLUSTER

Conditions at 00-10MHz (22%) 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%	1%	0%
EU	0%	1%	44%	0%	0%	0%
NA	0%	3%	1%	46%	3%	0%
OC	0%	0%	0%	0%	0%	0%
SA	0%	0%	0%	0%	0%	0%

Conditions at 10-20MHz (29%) based on DX-Cluster
Spots de	dx AF	dx AS	dx EU	dx NA	dx OC	dx SA
AF	0%	1%	1%	0%	0%	0%
AS	0%	3%	3%	2%	1%	0%
EU	1%	3%	42%	2%	2%	1%
NA	0%	2%	6%	31%	2%	0%
OC	0%	1%	1%	1%	1%	0%
SA	0%	0%	0%	0%	0%	0%

Conditions at 20-30MHz (16%) based on DX-Cluster
Spots de	dx AF	dx AS	dx EU	dx NA	dx OC	dx SA
AF	1%	2%	1%	0%	0%	0%
AS	2%	2%	5%	0%	0%	1%
EU	4%	3%	47%	5%	1%	7%
NA	1%	1%	10%	3%	0%	0%
OC	0%	3%	6%	0%	3%	0%
SA	0%	0%	2%	0%	1%	0%

Conditions at 50-54MHz (34%) based on DX-Cluster
Spots de	dx AF	dx AS	dx EU	dx NA	dx OC	dx SA
AF	1%	0%	0%	0%	0%	0%
AS	0%	1%	1%	0%	0%	0%
EU	3%	1%	93%	0%	1%	0%
NA	0%	0%	1%	2%	0%	0%
OC	0%	0%	0%	0%	0%	0%
SA	0%	0%	0%	0%	0%	0%

HISTORICAL PROPAGATION DATA

Last 30 days of HF propagation

Date and Time	Flux idx.	Spot num.	X-Ray idx.	X-Ray num	A-Index	K-Index	00-10MHz	10-20MHz	20-30MHz
2025-05-14 12:00:00	117	54	75.2	0	9	3.00	Fair	Poor	Closed
2025-05-14 00:00:00	116	64	75.2	0	9	3.33	Fair	Poor	Closed
2025-05-13 12:00:00	116	64	75.2	0	6	1.67	Fair	Poor	Closed
2025-05-13 00:00:00				0			Good	Good	Good
2025-05-12 12:00:00	126	77	75.2	0	16	1.67	Normal	Normal	Normal
2025-05-12 00:00:00	134	70	75.2	0	16	4.00	Fair	Fair	Fair
2025-05-11 12:00:00	134	70	75.2	0	12	2.00	Good	Good	Good
2025-05-11 00:00:00	136	77	75.2	0	12	2.33	Good	Good	Good
2025-05-10 12:00:00	136	77	75.2	0	15	2.33	Normal	Normal	Normal
2025-05-10 00:00:00	149	84	75.2	0	15	4.33	Fair	Normal	Normal
2025-05-09 12:00:00	149	84	75.2	0	12	2.00	Normal	Excellent	Excellent
2025-05-09 00:00:00	154	84	75.2	0	12	4.00	Fair	Good	Good
2025-05-08 12:00:00	154	84	75.2	0	8	1.67	Normal	Excellent	Excellent
2025-05-08 00:00:00	156	90	75.2	0	8	2.00	Normal	Excellent	Excellent
2025-05-07 12:00:00				0			Fair	Good	Good
2025-05-07 00:00:00				0			Fair	Good	Good
2025-05-06 12:00:00	159	108	75.2	0	29	2.67	Fair	Good	Good
2025-05-06 00:00:00	159	92	75.2	0	29	4.00	Fair	Normal	Normal
2025-05-05 12:00:00	159	92	75.2	0	25	4.00	Fair	Normal	Normal
2025-05-05 00:00:00	152	77	75.2	0	25	4.00	Fair	Fair	Fair
2025-05-04 12:00:00	152	77	75.2	0	26	2.33	Normal	Normal	Normal
2025-05-04 00:00:00	152	38	75.2	0	26	3.67	Normal	Normal	Normal
2025-05-03 12:00:00				0			Fair	Fair	Fair
2025-05-03 00:00:00	152	59	75.2	0	39	5.33	Normal	Normal	Normal
2025-05-02 12:00:00				0			Fair	Fair	Fair
2025-05-02 00:00:00	148	77	75.2	0	28	5.00	Fair	Fair	Fair
2025-05-01 12:00:00	148	77	75.2	0	12	4.00	Normal	Normal	Normal
2025-05-01 00:00:00	149	105	75.2	0	12	3.00	Normal	Excellent	Excellent
2025-04-30 12:00:00	149	105	75.2	0	6	3.33	Normal	Excellent	Excellent
2025-04-30 00:00:00	154	134	75.2	0	6	1.67	Normal	Excellent	Excellent
2025-04-29 12:00:00				0			Normal	Excellent	Excellent
2025-04-29 00:00:00	156	119	75.2	0	4	0.67	Good	Excellent	Excellent
2025-04-28 12:00:00	156	119	75.2	0	6	1.33	Normal	Excellent	Excellent
2025-04-28 00:00:00	156	172	75.2	0	6	1.33	Fair	Good	Excellent
2025-04-27 12:00:00	156	172	75.2	0	7	1.33	Fair	Good	Excellent
2025-04-27 00:00:00				0			Fair	Good	Excellent
2025-04-26 12:00:00	164	169	75.2	0	5	2.33	Fair	Good	Excellent
2025-04-26 00:00:00				0			Normal	Excellent	Excellent
2025-04-25 12:00:00	170	152	75.2	0	13	1.67	Fair	Good	Good
2025-04-25 00:00:00	167	132	75.2	0	13	1.33	Fair	Good	Good
2025-04-24 12:00:00	167	132	75.2	0	7	3.00	Normal	Excellent	Excellent
2025-04-24 00:00:00	163	142	75.2	0	7	1.33	Normal	Excellent	Excellent
2025-04-23 12:00:00	163	142	75.2	0	12	3.00	Normal	Excellent	Excellent
2025-04-23 00:00:00	163	137	75.2	0	12	2.67	Normal	Excellent	Excellent
2025-04-22 12:00:00	163	137	75.2	0	35	1.67	Fair	Good	Good
2025-04-22 00:00:00				0			Fair	Good	Good
2025-04-21 12:00:00				0			Fair	Normal	Normal
2025-04-21 00:00:00	157	114	75.2	0	14	2.33	Fair	Good	Good
2025-04-20 12:00:00	157	114	75.2	0	20	1.67	Fair	Good	Good
2025-04-20 00:00:00	156	113	75.2	0	20	4.33	Fair	Normal	Normal
2025-04-19 12:00:00				0			Fair	Good	Good
2025-04-19 00:00:00	151	118	75.2	0	13	2.67	Fair	Good	Good
2025-04-18 12:00:00	151	118	75.2	0	11	2.00	Normal	Excellent	Excellent
2025-04-18 00:00:00				0			Good	Good	Good
2025-04-17 12:00:00	148	70	75.2	0	77	1.67	Fair	Fair	Fair
2025-04-17 00:00:00	153	58	75.2	0	77	5.33	Fair	Fair	Fair
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