westerly wave

westerly wave

[′wes·tər·lē ′wāv]
(meteorology)
An atmospheric wave disturbance embedded in the mid-latitude westerlies.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Yesterday's trough of Westerly Wave over northern parts of Pakistan moved away eastwards and a fresh trough of Westerly Wave lay over northern parts of Afghanistan.
Yesterday's trough of Westerly Wave over northern parts of Pakistan moved eastwards and a fresh trough of Westerly Wave lay over northern parts of Afghanistan.
LAHORE -- A mixture of a westerly wave and moist currents from the Arabian Sea caused pre-monsoon rain in Lahore and some other cities in the country on Thursday, creating, nevertheless, acute mugginess because of high temperatures.
According to the synoptic situation, a shallow westerly wave is affecting upper and central parts of the country.
According to the experts, fresh westerly wave will enter western parts of the country today (Tuesday) and likely to persist upper parts till Friday.
Talking to APP on Friday, Meteorologist, Rashid Bilal said, a shallow westerly wave will approach northern parts of the country during the start of November and produce light rain in upper parts of the country especially Punjab and Khyber Pakhtunkhwa.
The PMD said a westerly wave is affecting western parts of the country and likely to grip upper parts of the country from tonight and expected to persist in upper and central parts of the country during next 4 to 5 days.
A fresh westerly wave is likely to affect western and upper parts from Saturday.
A moderate westerly wave is likely to affect the northern half of Pakistan from Thursday to Saturday that may interact with monsoon currents over KP, Upper Punjab and Kashmir.
LAHORE -- Another westerly wave is likely to enter western parts of Pakistan on Tuesday, giving more rain and gusty winds till Friday and posing a threat to the wheat crop already affected by heavy rains and severe windstorms earlier this week.
Experts are seeing respite from the prevailing foggy conditions as westerly wave is likely to give rainfall of varying intensities for parts of the country on Tuesday/Wednesday and the second one on Friday/Saturday.
According to the synoptic situation, a shallow westerly wave was affecting northern areas of the country.