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:	101
Spot number:	46
X-Ray index:	104.7
A index:	34
Kp index:	3.33

Conditions 00-10MHz:	Poor
Conditions 10-20MHz:	Closed
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 23cm between AS and AS is 100%
Probability of QSO on 23cm between OC and OC is 1%
Probability of QSO on 70cm between AS and AS is 76%
Probability of QSO on 2m between EU and EU is 43%
Probability of QSO on 2m between NA and NA is 100%
Probability of QSO on 2m between AS and AS is 26%
Probability of QSO on 6m between EU and EU is 36%
Probability of QSO on 6m between NA and NA is 93%
Probability of QSO on 10m between OC and NA is 15%
Probability of QSO on 10m between NA and AS is 64%
Probability of QSO on 10m between NA and OC is 59%
Probability of QSO on 12m between AS and OC is 13%
Probability of QSO on 15m between AS and EU is 15%
Probability of QSO on 15m between SA and OC is 38%
Probability of QSO on 15m between AS and OC is 18%
Probability of QSO on 15m between NA and AF is 24%
Probability of QSO on 15m between SA and NA is 16%
Probability of QSO on 15m between OC and NA is 39%
Probability of QSO on 17m between NA and AS is 65%
Probability of QSO on 17m between AS and OC is 19%
Probability of QSO on 17m between EU and AF is 29%
Probability of QSO on 17m between EU and AS is 79%
Probability of QSO on 17m between NA and AF is 47%
Probability of QSO on 17m between EU and NA is 11%
Probability of QSO on 17m between OC and AF is 1%
Probability of QSO on 17m between AF and NA is 16%
Probability of QSO on 17m between SA and NA is 21%
Probability of QSO on 20m between NA and AF is 11%
Probability of QSO on 20m between EU and NA is 21%
Probability of QSO on 20m between SA and OC is 17%
Probability of QSO on 20m between EU and OC is 11%
Probability of QSO on 20m between EU and AS is 31%
Probability of QSO on 20m between NA and EU is 9%
Probability of QSO on 20m between AF and EU is 5%
Probability of QSO on 20m between NA and AS is 11%
Probability of QSO on 20m between EU and AF is 59%
Probability of QSO on 20m between AF and NA is 6%
Probability of QSO on 20m between SA and NA is 27%
Probability of QSO on 20m between OC and AS is 20%
Probability of QSO on 20m between AS and OC is 5%
Probability of QSO on 20m between AS and NA is 54%
Probability of QSO on 20m between AS and EU is 11%
Probability of QSO on 20m between OC and EU is 2%
Probability of QSO on 20m between OC and NA is 5%
Probability of QSO on 20m between SA and EU is 16%
Probability of QSO on 30m between SA and NA is 14%
Probability of QSO on 30m between SA and AF is 35%
Probability of QSO on 30m between SA and EU is 8%
Probability of QSO on 30m between EU and AF is 49%
Probability of QSO on 30m between EU and NA is 9%
Probability of QSO on 30m between AS and SA is 9%
Probability of QSO on 30m between AS and EU is 13%
Probability of QSO on 30m between AS and AF is 24%
Probability of QSO on 30m between NA and AF is 29%
Probability of QSO on 30m between OC and NA is 10%
Probability of QSO on 30m between NA and EU is 5%
Probability of QSO on 30m between EU and AS is 27%
Probability of QSO on 40m between SA and NA is 24%
Probability of QSO on 40m between NA and EU is 2%
Probability of QSO on 40m between SA and AF is 17%
Probability of QSO on 40m between EU and NA is 9%
Probability of QSO on 40m between EU and AS is 30%
Probability of QSO on 40m between NA and AS is 46%
Probability of QSO on 40m between EU and SA is 21%
Probability of QSO on 40m between SA and EU is 17%
Probability of QSO on 40m between OC and NA is 50%
Probability of QSO on 40m between AF and OC is 3%
Probability of QSO on 40m between NA and AF is 22%
Probability of QSO on 40m between EU and AF is 57%
Probability of QSO on 60m between EU and AF is 53%
Probability of QSO on 60m between EU and SA is 14%
Probability of QSO on 80m between NA and AF is 9%
Probability of QSO on 80m between EU and AS is 1%
Probability of QSO on 80m between EU and AF is 36%
Probability of QSO on 80m between AS and NA is 100%
Probability of QSO on 80m between EU and NA is 8%
Probability of QSO on 80m between EU and SA is 26%
Probability of QSO on 80m between NA and EU is 5%
Probability of QSO on 80m between OC and NA is 58%
Probability of QSO on 160m between EU and SA is 27%

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

PROPAGATION BASED ON DX-CLUSTER

Conditions at 00-10MHz (61%) 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%	1%
EU	2%	1%	26%	3%	1%	2%
NA	0%	0%	9%	12%	0%	1%
OC	0%	0%	0%	0%	1%	0%
SA	0%	1%	3%	1%	0%	40%

Conditions at 10-20MHz (31%) 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	2%	2%	1%	1%	1%	0%
EU	1%	2%	5%	17%	1%	4%
NA	3%	2%	18%	26%	0%	5%
OC	0%	0%	0%	0%	1%	0%
SA	0%	1%	3%	2%	0%	9%

Conditions at 20-30MHz (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%	3%	0%	3%	0%	0%
NA	0%	0%	0%	30%	0%	0%
OC	0%	0%	0%	0%	3%	0%
SA	0%	0%	0%	0%	0%	57%

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%	3%	0%	0%	0%	0%
NA	3%	3%	0%	81%	0%	9%
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
2026-05-17 00:00:00	101	46	104.7	0	34	3.33	Poor	Closed	Closed
2026-05-16 12:00:00	101	46	104.7	0	35	3.67	Poor	Closed	Closed
2026-05-16 00:00:00	106	60	104.7	0	35	6.33	Closed	Closed	Closed
2026-05-15 12:00:00	106	60	104.7	0	5	3.33	Fair	Poor	Closed
2026-05-15 00:00:00	103	56	104.7	0	5	1.33	Fair	Poor	Closed
2026-05-14 12:00:00	103	56	104.7	0	10	0.67	Fair	Fair	Fair
2026-05-14 00:00:00	111	58	104.7	0	10	3.00	Fair	Poor	Closed
2026-05-13 12:00:00	111	58	104.7	0	4	1.67	Fair	Poor	Closed
2026-05-13 00:00:00	116	79	104.7	0	4	1.00	Fair	Fair	Fair
2026-05-12 12:00:00	116	79	104.7	0	5	0.33	Fair	Fair	Fair
2026-05-12 00:00:00	126	89	104.7	0	5	1.00	Good	Excellent	Excellent
2026-05-11 12:00:00	126	89	104.7	0	5	1.00	Good	Excellent	Excellent
2026-05-11 00:00:00	122	81	104.7	0	5	1.33	Normal	Excellent	Excellent
2026-05-10 12:00:00	122	81	104.7	0	5	1.00	Good	Excellent	Excellent
2026-05-10 00:00:00	120	75	104.7	0	5	0.67	Fair	Fair	Fair
2026-05-09 12:00:00	120	75	104.7	0	12	1.67	Fair	Poor	Closed
2026-05-09 00:00:00	117	59	104.7	0	12	2.67	Fair	Poor	Closed
2026-05-08 12:00:00	117	59	104.7	0	7	3.00	Fair	Poor	Closed
2026-05-08 00:00:00	120	105	104.7	0	7	2.33	Poor	Fair	Fair
2026-05-07 12:00:00	120	105	104.7	0	3	0.67	Fair	Normal	Normal
2026-05-07 00:00:00	128	119	104.7	0	4	0.67	Good	Excellent	Excellent
2026-05-06 12:00:00	128	119	104.7	0	12	1.00	Good	Excellent	Excellent
2026-05-06 00:00:00	138	143	104.7	0	12	1.00	Good	Excellent	Excellent
2026-05-05 12:00:00	138	143	104.7	0	26	1.00	Normal	Excellent	Excellent
2026-05-05 00:00:00	143	138	104.7	0	26	4.67	Fair	Normal	Normal
2026-05-04 12:00:00	143	138	104.7	0	8	2.67	Normal	Excellent	Excellent
2026-05-04 00:00:00				0			Good	Excellent	Excellent
2026-05-03 12:00:00	159	133	104.7	0	7	1.00	Good	Excellent	Excellent
2026-05-03 00:00:00	145	158	104.7	0	7	2.67	Normal	Excellent	Excellent
2026-05-02 12:00:00	145	158	104.7	0	14	2.00	Fair	Good	Good
2026-05-02 00:00:00	143	130	104.7	0	14	1.67	Fair	Good	Good
2026-05-01 12:00:00	143	130	104.7	0	15	1.67	Fair	Good	Good
2026-05-01 00:00:00	143	142	104.7	0	12	4.00	Fair	Good	Good
2026-04-30 12:00:00	143	142	104.7	0	4	1.67	Normal	Excellent	Excellent
2026-04-30 00:00:00	149	144	104.7	0	4	1.67	Normal	Excellent	Excellent
2026-04-29 12:00:00				0			Good	Excellent	Excellent
2026-04-29 00:00:00	142	122	104.7	0	3	0.33	Good	Excellent	Excellent
2026-04-28 12:00:00	142	122	104.7	0	7	0.67	Good	Excellent	Excellent
2026-04-28 00:00:00	156	137	104.7	0	7	1.00	Good	Excellent	Excellent
2026-04-27 12:00:00	156	137	104.7	0	14	1.33	Fair	Good	Good
2026-04-27 00:00:00	148	154	104.7	0	14	3.33	Fair	Good	Good
2026-04-26 12:00:00	148	154	104.7	0	9	3.67	Normal	Excellent	Excellent
2026-04-26 00:00:00	146	123	104.7	0	9	3.33	Normal	Excellent	Excellent
2026-04-25 12:00:00	146	123	104.7	0	9	0.67	Good	Excellent	Excellent
2026-04-25 00:00:00	128	71	104.7	0	9	3.33	Good	Good	Good
2026-04-24 12:00:00	128	71	104.7	0	7	1.33	Good	Good	Good
2026-04-24 00:00:00	116	72	104.7	0	7	1.67	Fair	Poor	Closed
2026-04-23 12:00:00	116	72	104.7	0	5	1.67	Fair	Poor	Closed
2026-04-23 00:00:00	112	68	104.7	0	5	1.67	Fair	Poor	Closed
2026-04-22 12:00:00	112	68	104.7	0	19	0.67	Fair	Poor	Closed
2026-04-22 00:00:00	105	46	104.7	0	19	2.00	Poor	Closed	Closed
2026-04-21 12:00:00	105	46	104.7	0	24	2.00	Poor	Closed	Closed
2026-04-21 00:00:00	105	35	104.7	0	24	3.67	Poor	Closed	Closed
2026-04-20 12:00:00	105	35	104.7	0	23	3.67	Poor	Closed	Closed
2026-04-20 00:00:00	106	44	104.7	0	23	1.67	Poor	Closed	Closed
2026-04-19 12:00:00	106	44	104.7	0	33	3.67	Poor	Closed	Closed
2026-04-19 00:00:00	107	50	104.7	0	33	4.00	Closed	Closed	Closed
2026-04-18 12:00:00	107	50	104.7	0	4	5.00	Poor	Closed	Closed
2026-04-18 00:00:00	108	65	104.7	0	5	1.67	Fair	Poor	Closed
2026-04-17 12:00:00	108	65	104.7	0	3	1.00	Fair	Fair	Fair