File:NWS weather fronts.svg

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Summary

Description

Weather fronts

cold front
warm front
stationary front
occluded front
surface trough
squall line
dry line
tropical wave
trowal (Trough of warm air aloft by Canadian Avalanche Association and World Meteorological Organisation)

Date

15 August 2006

Source

w:en:Image:NWSweatherfronts.gif, [1]Hydrometeorological Prediction Center, Camp Springs, MD. Updated with Trowal on 2013-08-28

Author

	This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code. Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	17:51, 14 October 2016		560 × 320 (3 KB)	-xfi-	+ trowal

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Image title	Weather fronts: 1. cold front 2. warm front 3. stationary front 4. occluded front 5. surface trough 6. squall line 7. dry line 8. tropical wave 9. trowal
Width	560
Height	320