William Hepburn's
Worldwide

Tropospheric Ducting Forecast
6 DAY FORECAST OF VHF, UHF & MICROWAVE RADIO & TV SIGNAL STRENGTH & INTERFERENCE


© 2016 William R. Hepburn
CLICK HERE FOR
Current Conditions

by Jon Harder / APRS
Please check here for copyright restrictions
Forecast in 3 hour intervals for first 30 hours ... and in 6 hour intervals for the remainder of the 6 days
Maps updated daily around 1900 UTC
Click on map to advance - or use keyboard left/right arrows
Hit Refresh on your browser to ensure display of latest maps. You must have JavaScript enabled.
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10+
NIL SIG
MARGINAL
FAIR
MODERATE
GOOD
STRONG
VERY STRONG
INTENSE
VERY INTENSE
EXTREME
EXTREME
U = UNSTABLE SIGNAL AREAS

slideshow


0
1
2
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10+
NIL SIG
MARGINAL
FAIR
MODERATE
GOOD
STRONG
VERY STRONG
INTENSE
VERY INTENSE
EXTREME
EXTREME

PAST WEEK MAPS
Sunday Monday Tuesday Wednesday Thursday Friday Saturday
Sunday
Monday Tuesday Wednesday Thursday Friday Saturday
Click for larger image



 The areas noted in the forecast have the necessary atmospheric conditions to produce tropospheric bending of VHF, UHF and/or  microwave radio waves. Tropospheric bending extends the range of radio & TV stations well beyond their normal limit and thus increases interference amongst stations as well.
 How to use the Tropospheric Ducting Forecast
 
Tropospheric DX Modes
 
History of the Tropospheric Ducting Forecast
 If clickable map format won't work :
  1. Do you have JavaScript enabled ?
  2. Is your browser up-to-date ?
  3. If it still won't work, you can still get the old style webpage by replacing .html  by  _old.html


 COPYRIGHT RESTRICTIONS IN EFFECT

The information on this website is primarily for personal use. The display of current forecast maps on other websites is not permitted under any circumstance.

NON-COMMERCIAL USE
Broadcast of text or verbal information derived from using the maps, and display of older maps on websites and/or in publications for non-commercial purposes is permitted as long as William Hepburn is credited as the original source and a link to this website is provided. Terms for government use are the same as for commercial use.

COMMERCIAL OR GOVERNMENT USE
Commercial or government use of any maps (forecast or archived) or the information they contain, whether for internal operational use or for use in the development of products or services, without obtaining licensed consent from the owner, is strictly prohibited. To request a licence, please contact the owner at dxinfo at cogeco.ca



GrADS 2.0 (COLA/IGES) used to create maps.
GrADS copyright at http://cola.gmu.edu/grads/gadoc/COPYRIGHT.


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Member of WTFDA Since 1977
Tropo Forecasts Since 2000
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EOF