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

Thomas F. Giella thomasfgiella at tampabay.rr.com
Sat Jun 2 08:02:08 PDT 2012


The NZ4O "Daily" Condensed HF/6M Radiowave Propagation Forecast has been 
published on Saturday Jun 02, 2012 at 1300 UTC and is valid for the next 24 
hours.
This daily" condensed HF/6M radiowave propagation forecast can also be found 
at http://www.facebook.com/pages/SolarCycle24org/139198369462931 and 
http://lists.contesting.com/mailman/listinfo/spaceweather .




FORECASTED NORTHERN HEMISPHERE GLOBAL HF CONDITIONS BY BAND-

BAND:                         DAY -> NIGHT
80, 60 Meters: Poor -> Fair To Good

40, 30 Meters: Fair-> Fair To Good

20, 17, 15 Meters: Good -> Good

12, 10 Meters: Good -> Poor



FORECASTED SOUTHERN HEMISPHERE GLOBAL HF CONDITIONS BY BAND-

BAND:                         DAY -> NIGHT

80, 60 Meters: Fair -> Good

40, 30 Meters: Fair -> Good

20, 17, 15 Meters: Good To Excellent -> Good To Excellent

12, 10 Meters: Good To Excellent -> Poor



FORECASTED NORTHERN HEMISPHERE GLOBAL HF CONDITIONS BY LATITUDE-

Low Latitude- Normal

Mid Latitude- Normal

High Latitude- Normal



FORECASTED SOUTHERN HEMISPHERE GLOBAL HF CONDITIONS BY LATITUDE-

Low Latitude- Normal

Mid Latitude- Normal

High Latitude- Normal



FORECASTED NORTHERN HEMISPHERE SHORT PATH 80, 60, 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 SHORT PATH 80, 60, 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 SHORT PATH 20, 17, 15 METERS-

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

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

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

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



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

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

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

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

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



FORECASTED NORTHERN HEMISPHERE SHORT PATH 12, 10 METERS-

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

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

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

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



FORECASTED SOUTHERN HEMISPHERE SHORT PATH 12, 10 METERS-

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

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

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

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



FORECASTED FROM THE NORTHERN HEMISPHERE LONG PATH-

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

2000 mi/3200 km will be FAIR TO GOOD on 80, 60, 40 and 30 meters, GOOD on 
20, 17, 15 and GOOD on 12 and 10 meters.

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.



FORECASTED FROM THE SOUTHERN HEMISPHERE LONG PATH-

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

2000 mi/3200 km will be GOOD on 80, 60, 40 and 30 meters, GOOD TO EXCELLENT 
on 20, 17, 15 and GOOD TO EXCELLENT on 12 and 10 meters.

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
Aurora E High Latitude- Yes
Aurora E Mid Latitude- No
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 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.

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

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



Northern hemisphere high latitude regions can expect MODERATE TO HIGH 
thunderstorm lightning induced QRN tied to winter

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



Southern 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.

Southern 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.

Southern hemisphere high latitude regions can expect MODERATE TO HIGH 
thunderstorm lightning induced QRN tied to summer

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

Standard Disclaimer-

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 forecasts. 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.








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