William Hepburn's
Worldwide

Tropospheric Ducting Forecasts
6-DAY FORECASTS OF VHF, UHF & MICROWAVE RADIO & TV SIGNAL STRENGTH & INTERFERENCE  © 2014


The display of current forecast maps on other websites is not permitted under any circumstance.
Maps updated daily around 1800 UTC.
..U.. = unstable signal areas.
 Current Conditions
by Jon Harder / APRS

Low
1.4
2
3
4
5
6
7
8
9
10+
NIL
MRGNL
FAIR
MDT
GOOD
STRONG
VRY STG
INTENSE
VRY INT
EXTREME
EXTREME
CLICK HERE FOR 42 HOUR FORECAST IN 6 HOUR INTERVALS
6 DAY PREVIEW
Click on map for more detail - Hit Refresh on your browser to ensure display of latest maps

Day 1 Day 2
Day 3 Day 4
Day 5 Day 6


42 HOUR FORECAST
1
2
3
4
5
6
7
8


EXTENDED  FORECAST
Day 3
Day 4
Day 5
Day 6
Low
1.4
2
3
4
5
6
7
8
9
10+
NIL
MRGNL
FAIR
MDT
GOOD
STRONG
VRY STG
INTENSE
VRY INT
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

Copyright ©1997-2014 William R. Hepburn
The display of current forecast maps on other websites is not permitted under any circumstance.
Commercial use of the maps or the information they contain is strictly prohibited.
Broadcast of text/verbal information derived by using the maps, and display of older maps on websites or in publications is permitted as long as William Hepburn is credited as the original source. GrADS 1.8 (COLA/IGES) used to create maps.
Also see GrADS copyright at ftp://grads.iges.org/grads/src/COPYRIGHT.


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