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:	142
Spot number:	122
X-Ray index:	104.7
A index:	7
Kp index:	0.67

Conditions 00-10MHz:	Good
Conditions 10-20MHz:	Excellent
Conditions 20-30MHz:	Excellent
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 70cm between AS and AS is 100%
Probability of QSO on 2m between NA and NA is 46%
Probability of QSO on 2m between AS and AS is 27%
Probability of QSO on 2m between OC and OC is 2%
Probability of QSO on 6m between OC and OC is 10%
Probability of QSO on 6m between NA and NA is 100%
Probability of QSO on 6m between EU and EU is 14%
Probability of QSO on 10m between EU and SA is 24%
Probability of QSO on 10m between EU and AS is 20%
Probability of QSO on 10m between AS and EU is 30%
Probability of QSO on 10m between NA and AF is 62%
Probability of QSO on 10m between NA and SA is 66%
Probability of QSO on 10m between AS and AF is 15%
Probability of QSO on 10m between AS and SA is 15%
Probability of QSO on 10m between AF and OC is 15%
Probability of QSO on 10m between OC and EU is 46%
Probability of QSO on 10m between EU and NA is 70%
Probability of QSO on 10m between NA and EU is 100%
Probability of QSO on 10m between SA and NA is 18%
Probability of QSO on 10m between EU and AF is 44%
Probability of QSO on 12m between AS and EU is 13%
Probability of QSO on 12m between EU and AF is 40%
Probability of QSO on 12m between NA and AF is 17%
Probability of QSO on 12m between EU and AS is 23%
Probability of QSO on 12m between AS and SA is 33%
Probability of QSO on 12m between NA and EU is 44%
Probability of QSO on 12m between NA and SA is 4%
Probability of QSO on 15m between OC and NA is 98%
Probability of QSO on 15m between OC and AS is 1%
Probability of QSO on 15m between AS and OC is 4%
Probability of QSO on 15m between SA and AF is 47%
Probability of QSO on 15m between EU and AS is 15%
Probability of QSO on 15m between NA and AF is 26%
Probability of QSO on 15m between AF and SA is 14%
Probability of QSO on 15m between AS and SA is 21%
Probability of QSO on 15m between OC and EU is 25%
Probability of QSO on 15m between EU and AF is 58%
Probability of QSO on 15m between AS and EU is 14%
Probability of QSO on 15m between NA and EU is 6%
Probability of QSO on 17m between AS and OC is 11%
Probability of QSO on 17m between AS and EU is 0%
Probability of QSO on 17m between SA and NA is 4%
Probability of QSO on 17m between AF and EU is 4%
Probability of QSO on 17m between AF and SA is 1%
Probability of QSO on 17m between AS and NA is 6%
Probability of QSO on 17m between AS and SA is 10%
Probability of QSO on 17m between AS and AF is 4%
Probability of QSO on 17m between EU and AF is 34%
Probability of QSO on 17m between NA and AF is 15%
Probability of QSO on 17m between NA and EU is 11%
Probability of QSO on 20m between EU and AS is 12%
Probability of QSO on 20m between AS and OC is 3%
Probability of QSO on 20m between NA and OC is 9%
Probability of QSO on 20m between NA and EU is 21%
Probability of QSO on 20m between AS and AF is 18%
Probability of QSO on 20m between EU and AF is 43%
Probability of QSO on 20m between SA and NA is 43%
Probability of QSO on 20m between SA and OC is 25%
Probability of QSO on 20m between SA and EU is 17%
Probability of QSO on 20m between NA and AF is 27%
Probability of QSO on 20m between EU and NA is 15%
Probability of QSO on 20m between EU and OC is 37%
Probability of QSO on 20m between SA and AF is 47%
Probability of QSO on 20m between AF and SA is 19%
Probability of QSO on 20m between NA and AS is 68%
Probability of QSO on 20m between OC and NA is 17%
Probability of QSO on 30m between NA and OC is 4%
Probability of QSO on 30m between EU and OC is 59%
Probability of QSO on 30m between OC and NA is 0%
Probability of QSO on 30m between AS and OC is 9%
Probability of QSO on 30m between SA and NA is 1%
Probability of QSO on 30m between EU and NA is 100%
Probability of QSO on 30m between AS and NA is 0%
Probability of QSO on 30m between EU and AF is 8%
Probability of QSO on 40m between EU and OC is 85%
Probability of QSO on 40m between AS and EU is 27%
Probability of QSO on 40m between AS and OC is 11%
Probability of QSO on 40m between EU and NA is 62%
Probability of QSO on 40m between OC and NA is 24%
Probability of QSO on 40m between NA and EU is 35%
Probability of QSO on 40m between AS and NA is 13%
Probability of QSO on 60m between AS and NA is 6%
Probability of QSO on 80m between NA and EU is 8%
Probability of QSO on 80m between SA and NA is 6%
Probability of QSO on 80m between OC and NA is 39%
Probability of QSO on 80m between EU and NA is 99%

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

PROPAGATION BASED ON DX-CLUSTER

Conditions at 00-10MHz (31%) based on DX-Cluster
Spots de	dx AF	dx AS	dx EU	dx NA	dx OC	dx SA
AF	0%	0%	2%	0%	0%	0%
AS	0%	0%	0%	1%	0%	1%
EU	0%	0%	73%	0%	1%	0%
NA	0%	2%	0%	9%	2%	0%
OC	0%	3%	0%	2%	3%	1%
SA	0%	0%	0%	0%	0%	0%

Conditions at 10-20MHz (36%) 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	3%	2%	4%	1%	0%	1%
EU	5%	3%	59%	3%	2%	0%
NA	1%	8%	4%	3%	1%	0%
OC	1%	0%	2%	1%	2%	0%
SA	0%	0%	0%	0%	0%	0%

Conditions at 20-30MHz (28%) based on DX-Cluster
Spots de	dx AF	dx AS	dx EU	dx NA	dx OC	dx SA
AF	2%	0%	0%	0%	0%	0%
AS	6%	5%	5%	2%	2%	0%
EU	18%	14%	18%	1%	10%	2%
NA	1%	0%	1%	0%	0%	0%
OC	1%	2%	8%	0%	3%	0%
SA	2%	0%	0%	0%	0%	1%

Conditions at 50-54MHz (7%) 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%	6%	0%	0%	0%	0%
EU	3%	0%	31%	0%	0%	0%
NA	0%	0%	0%	62%	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
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
2026-04-17 00:00:00	105	57	104.7	0	3	0.67	Fair	Fair	Fair
2026-04-16 12:00:00	105	57	104.7	0	4	0.67	Fair	Fair	Fair
2026-04-16 00:00:00	101	64	104.7	0	4	1.67	Fair	Poor	Closed
2026-04-15 12:00:00	101	64	104.7	0	4	0.67	Fair	Fair	Fair
2026-04-15 00:00:00	99	58	104.7	0	4	0.33	Fair	Fair	Fair
2026-04-14 12:00:00	99	58	104.7	0	3	1.33	Fair	Poor	Closed
2026-04-14 00:00:00				0			Fair	Fair	Fair
2026-04-13 12:00:00	99	47	104.7	0	8	1.00	Fair	Fair	Fair
2026-04-13 00:00:00	93	42	104.7	0	8	2.33	Fair	Poor	Closed
2026-04-12 12:00:00	93	42	104.7	0	12	2.33	Fair	Poor	Closed
2026-04-12 00:00:00	94	48	104.7	0	12	1.33	Fair	Poor	Closed
2026-04-11 12:00:00	94	48	104.7	0	18	3.33	Poor	Closed	Closed
2026-04-11 00:00:00	98	79	104.7	0	18	2.00	Poor	Closed	Closed
2026-04-10 12:00:00	98	79	104.7	0	7	2.00	Fair	Poor	Closed
2026-04-10 00:00:00	108	103	104.7	0	7	2.33	Poor	Fair	Fair
2026-04-09 12:00:00				0			Poor	Fair	Fair
2026-04-09 00:00:00	109	110	104.7	0	7	1.67	Poor	Fair	Fair
2026-04-08 12:00:00	109	110	104.7	0	9	2.33	Poor	Fair	Fair
2026-04-08 00:00:00	116	112	104.7	0	9	3.00	Poor	Fair	Fair
2026-04-07 12:00:00	116	112	104.7	0	10	1.00	Fair	Normal	Normal
2026-04-07 00:00:00	118	112	104.7	0	10	2.33	Poor	Fair	Fair
2026-04-06 12:00:00	118	112	104.7	0	12	2.00	Poor	Fair	Fair
2026-04-06 00:00:00	128	113	104.7	0	12	1.00	Good	Excellent	Excellent
2026-04-05 12:00:00	128	113	104.7	0	16	3.00	Fair	Good	Good
2026-04-05 00:00:00	136	118	104.7	0	16	2.33	Fair	Good	Good
2026-04-04 12:00:00	136	118	104.7	0	49	2.67	Fair	Good	Good
2026-04-04 00:00:00	140	152	104.7	0	49	5.67	Fair	Good	Good
2026-04-03 12:00:00	140	152	104.7	0	43	4.00	Fair	Normal	Normal
2026-04-03 00:00:00	142	130	104.7	0	43	3.67	Fair	Good	Good
2026-04-02 12:00:00	142	130	104.7	0	8	5.00	Fair	Good	Good
2026-04-02 00:00:00	141	133	104.7	0	8	2.33	Normal	Excellent	Excellent
2026-04-01 12:00:00	141	133	104.7	0	7	1.67	Normal	Excellent	Excellent
2026-04-01 00:00:00	152	143	104.7	0	7	1.33	Normal	Excellent	Excellent
2026-03-31 12:00:00	152	143	104.7	0	12	2.00	Normal	Excellent	Excellent
2026-03-31 00:00:00	158	125	104.7	0	12	1.67	Normal	Excellent	Excellent
2026-03-30 12:00:00	158	125	104.7	0	14	3.00	Fair	Good	Good
2026-03-30 00:00:00	162	116	104.7	0	14	2.00	Fair	Good	Good
2026-03-29 12:00:00	162	116	104.7	0	10	2.33	Normal	Excellent	Excellent