[NZ4O Spaceweather] NZ4O "Daily" HF/6M Radiowave Propagation Forecast

Thomas F. Giella thomasfgiella at tampabay.rr.com
Sat Jul 14 06:33:17 PDT 2012


The NZ4O "Daily" HF/6M Radiowave Propagation Forecast has been published on 
Saturday July 14, 2012 at 1400 UTC and is valid for the next 24 hours.


"An In Depth HF/6M Radiowave Propagation Forecast For Amateur Radio 
Operators As Well As SWL's"



This daily condensed HF/6M radiowave propagation forecast can also be found 
at http://www.wcflunatall.com/dailycondensedhfprop.htm , 
http://www.facebook.com/pages/SolarCycle24org/139198369462931 and 
http://lists.contesting.com/mailman/listinfo/spaceweather .

The complete MF/HF/6M 7 day period radiowave propagation forecast can be 
found at http://www.solarcycle24.org .



This radiowave propagation forecast is provided free of charge to the radio 
hobby communities but donations are graciously accepted. You can donate by 
going to http://www.paypal.com and clicking on the "Send Money" tab. My 
Paypal ID/email address is thomasfgiella at tampabay.rr.com .


NOTE! This HF/6M radiowave propagation forecast covers all continents and 
all hemispheres.



FORECASTED NORTHERN HEMISPHERE GLOBAL HF CONDITIONS BY BAND-

BAND:                         DAY -> NIGHT

80, 60 Meters: Poor -> Fair

40, 30 Meters: Fair-> Fair To Good

20, 17, 15 Meters: Good -> Fair To Poor

12, 10 Meters: Poor To Fair -> Poor



FORECASTED SOUTHERN HEMISPHERE GLOBAL HF CONDITIONS BY BAND-

BAND:                         DAY -> NIGHT

80, 60 Meters: Poor To Fair -> Good

40, 30 Meters: Fair -> Good

20, 17, 15 Meters: Good -> Good

12, 10 Meters: Fair To Good -> Poor

HF Propagation Forecast Scale-
Excellent S9+1 Or Better
Good S7-S9
Fair S4-S6
Poor S1-S3
None S0

FORECASTED NORTHERN HEMISPHERE GLOBAL HF CONDITIONS BY LATITUDE-

Low Latitude- Low Normal

Mid Latitude- Low Normal

High Latitude- Low Normal



FORECASTED SOUTHERN HEMISPHERE GLOBAL HF CONDITIONS BY LATITUDE-

Low Latitude- Low Normal

Mid Latitude- Low Normal

High Latitude- Low Normal



FORECASTED NORTHERN HEMISPHERE GREAT CIRCLE SHORT PATH 80, 60 METERS-

East -> West To 2000 Mi/3200 km- Fair To Good

West -> East To 2000 Mi/3200 km- Fair To Good

North -> South To 2000 Mi/3200 km- Fair To Good

South -> North To 2000 Mi/3200 km- Fair To Good



FORECASTED SOUTHERN HEMISPHERE GREAT CIRCLE SHORT PATH 80, 60 METERS-

East -> West To 2000 Mi/3200 km- Good

West -> East To 2000 Mi/3200 km- Good

South -> North To 2000 Mi/3200 km- Good

North -> South To 2000 Mi/3200 km- Good



FORECASTED NORTHERN HEMISPHERE GREAT CIRCLE SHORT PATH 40, 30 METERS-

East -> West To 2000 Mi/3200 km- Fair To Good

West -> East To 2000 Mi/3200 km- Fair To Good

North -> South To 2000 Mi/3200 km- Fair To Good

South -> North To 2000 Mi/3200 km- Fair To Good



FORECASTED SOUTHERN HEMISPHERE GREAT CIRCLE SHORT PATH 40, 30 METERS-

East -> West To 2000 Mi/3200 km- Good

West -> East To 2000 Mi/3200 km- Good

South -> North To 2000 Mi/3200 km- Good

North -> South To 2000 Mi/3200 km- Good



FORECASTED NORTHERN HEMISPHERE GREAT CIRCLE SHORT PATH 20, 17, 15 METERS-

East -> West To 2000 Mi/3200 km- Fair To Good

West -> East To 2000 Mi/3200 km- Fair To Good

North -> South To 2000 Mi/3200 km- Fair To Good

South -> North To 2000 Mi/3200 km- Fair To Good



FORECASTED SOUTHERN HEMISPHERE GREAT CIRCLE SHORT PATH 20, 17, 15 METERS-

East -> West To 2000 Mi/3200 km- Good

West -> East To 2000 Mi/3200 km- Good

South -> North To 2000 Mi/3200 km- Good

North -> South To 2000 Mi/3200 km- Good



FORECASTED NORTHERN HEMISPHERE GREAT CIRCLE SHORT PATH 12, 10 METERS-

East -> West To 2000 Mi/3200 km- Poor To Fair

West -> East To 2000 Mi/3200 km- Poor To Fair

North -> South To 2000 Mi/3200 km- Poor To Fair

South -> North To 2000 Mi/3200 km- Poor To Fair



FORECASTED SOUTHERN HEMISPHERE GREAT CIRCLE SHORT PATH 12, 10 METERS-

East -> West To 2000 Mi/3200 km- Fair To Good

West -> East To 2000 Mi/3200 km- Fair To Good

South -> North To 2000 Mi/3200 km- Fair To Good

North -> South To 2000 Mi/3200 km- Fair To Good



Note!!! At times propagation conditions on 10 meters will be Good, via the 
less predictable Sporadic E (Es) and trans-equatorial (TE) propagation modes 
which involve the F2/3 layer.



HF Propagation Forecast Scale-
Excellent S9+1 Or Better
Good S7-S9
Fair S4-S6
Poor S1-S3
None S0


FORECASTED NORTHERN HEMISPHERE GREAT CIRCLE VIA LONG PATH-

80, 60 meters

(TA) Trans Atlantic, (TI) Trans Indian, (TP) Trans Pacific and cross 
Equatorial propagation conditions greater than

2000 mi/3200 km.

Low Latitude- Fair To Good

Mid Latitude- Fair To Good

High Latitude- Fair To Good



FORECASTED SOUTHERN HEMISPHERE GREAT CIRCLE VIA LONG PATH-

80, 60 meters

(TA) Trans Atlantic, (TI) Trans Indian, (TP) Trans Pacific propagation 
conditions greater than 2000 mi/3200 km.

Low Latitude- Good

Mid Latitude- Good

High Latitude- Good



FORECASTED NORTHERN HEMISPHERE GREAT CIRCLE VIA LONG PATH-

40, 30 meters

(TA) Trans Atlantic, (TI) Trans Indian, (TP) Trans Pacific and cross 
Equatorial propagation conditions greater than

2000 mi/3200 km.

Low Latitude- Fair To Good

Mid Latitude- Fair To Good

High Latitude- Fair To Good



FORECASTED SOUTHERN HEMISPHERE GREAT CIRCLE VIA LONG PATH-

40, 30 meters

(TA) Trans Atlantic, (TI) Trans Indian, (TP) Trans Pacific propagation 
conditions greater than 2000 mi/3200 km.

Low Latitude- Good

Mid Latitude- Good

High Latitude- Good



HF Propagation Forecast Scale-
Excellent S9+1 Or Better
Good S7-S9
Fair S4-S6
Poor S1-S3
None S0


FORECASTED NORTHERN HEMISPHERE GREAT CIRCLE VIA LONG PATH-

20, 17, 15 meters

(TA) Trans Atlantic, (TI) Trans Indian, (TP) Trans Pacific and cross 
Equatorial propagation conditions greater than

2000 mi/3200 km.

Low Latitude Fair To Good

Mid Latitude- Fair To Good

High Latitude- Fair To Good



FORECASTED SOUTHERN HEMISPHERE GREAT CIRCLE VIA LONG PATH-

20, 17, 15 meters

(TA) Trans Atlantic, (TI) Trans Indian, (TP) Trans Pacific and cross 
Equatorial propagation conditions greater than

2000 mi/3200 km.

Low latitude- Good

Mid Latitude- Good

High latitude- Good





FORECASTED NORTHERN HEMISPHERE GREAT CIRCLE VIA LONG PATH-

12, 10 meters

(TA) Trans Atlantic, (TI) Trans Indian, (TP) Trans Pacific and cross 
Equatorial propagation conditions greater than

2000 mi/3200 km.

Low Latitude- Poor To Fair

Mid Latitude- Poor To Fair

High Latitude- Poor To Fair



FORECASTED SOUTHERN HEMISPHERE GREAT CIRCLE VIA LONG PATH-

12, 10 meters

(TA) Trans Atlantic, (TI) Trans Indian, (TP) Trans Pacific and cross 
Equatorial propagation conditions greater than

2000 mi/3200 km.

Low Latitude- Fair To Good

Mid Latitude- Fair To Good

High Latitude- Fair To Good



Note!!! At times propagation conditions on 10 meters will be Good, via the 
less predictable Sporadic E (Es) and trans-equatorial (TE) propagation modes 
which involve the F2/3 layer.



Magnetic Equator-

Low- 0-25 degrees

Mid- 25-60 degrees

High- 60-90 degrees

http://www.wcflunatall.com/geomagneticequator.gif

HF Propagation Forecast Scale-
Excellent S9+1 Or Better
Good S7-S9
Fair S4-S6
Poor S1-S3
None S0


GLOBAL 50000-54000 KC (6 METERS) PROPAGATION MODES EXPECTED FORECAST-

F2- None
Sporadic E (Es)- Yes, northern hemisphere Es season is underway
Aurora E High Latitude- Yes
Aurora E Mid Latitude- Yes
Troposphere Ducting- Yes
Trans Equatorial (TE) F2/F3- Yes
Meteor Scatter- No, excluding random meteors, lightning bolt plasma 
channels, space junk and alien spacecraft


Meter Band Equivalents
Ham           SWL
160              90
80                75
60                60
40                49, 41
30                31, 25
20                22, 19
17                16, 15
15                 13
12, 10          11



FORECASTED GLOBAL LIGHTNING NOISE (QRN)-



Northern hemisphere low latitude regions can expect VERY HIGH thunderstorm 
lightning induced QRN tied to summer season

proximity to the Inter-Tropical Convergence Zone (ITCZ) and tropical warm 
core low pressure systems.

Northern hemisphere mid latitude regions can expect HIGH TO VERY HIGH 
thunderstorm lightning induced QRN tied to summer

season cold/warm/occluded fronts and associated extra-tropical cold core low 
pressure systems, as well as tropical warm core low pressure systems.

Northern hemisphere high latitude regions can expect HIGH thunderstorm 
lightning induced QRN tied to summer

season cold/warm/occluded fronts and associated extra-tropical cold core low 
pressure systems.



Southern hemisphere low latitude regions can expect HIGH thunderstorm 
lightning induced QRN tied to winter season proximity

to the Inter-Tropical Convergence Zone (ITCZ) as well as cold/warm/occluded 
fronts and associated extra-tropical cold core low

pressure systems.

Southern hemisphere mid latitude regions can expect MODERATE thunderstorm 
lightning induced QRN tied to winter

season cold/warm/occluded fronts and associated extra-tropical cold core low 
pressure systems.



Southern hemisphere high latitude regions can expect LOW thunderstorm 
lightning induced QRN tied to winter

season cold/warm/occluded fronts and associated extra-tropical cold core low 
pressure systems.





Lightning Induced Noise (QRN) Forecast Scale-

Very High >+1 db Over S9

High- S7-9

Moderate- S4-6

Low- S1-3

None- S0



Note! I use error prone RAW public domain data from the NOAA Space 
Environment Center, as well as other U.S. government organizations, to 
produce my radiowave propagation forecast. This data is gathered and made 
public by the U.S. Government using taxpayer $$$. However the propagation 
forecast that I produce from the RAW public domain data is my personal 
intellectual property. Therefore this propagation forecast contained herein 
is copyrighted © 1988-2012 by Thomas F. Giella, NZ4O. Reproduction of and 
distribution of the propagation forecast herein is allowed without advanced 
permission as long as proper credit is given.

Also space weather forecasting is still an inexact science. The forecasts 
are not official but for hobby related purposes only and are subject to 
human error and acts of God, therefore no guarantee or warranty implied.

73 & GUD DX,
Thomas F. Giella, NZ4O
Lakeland, FL, USA
thomasfgiella at tampabay.rr.com



NZ4O Amateur & SWL Radio Autobiography: http://www.nz4o.com
NZ4O MF/HF/6M (600-6 Meters) Radiowave Propagation Forecast: 
http://www.solarcycle24.org
Harmful Man Induced (Anthropogenic) Climate Change (Global Warming) Refuted: 
http://www.globalwarminglie.org 



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