Pollutants are transient in air. The length of time before removal is dependent on the pollutant and the local conditions. They are removed by a number of processes:
You can never tell how long a thunder storm will last but you can tell how far away it is by waiting for thunder the count till you see lightning.
The Dust Bowl was a period of severe dust storms that affected the prairies of the Great Plains in the United States during the 1930s. It lasted for nearly a decade, from around 1930 to the early 1940s.
By definition, a derecho lasts at least 6 hours, though not in one location.
The Gulf War, also known as Operation Desert Storm, lasted from January 17, 1991 to February 28, 1991 - a total of 42 days.
Occluded fronts typically last for about 12 to 24 hours before dissipating. The duration can vary depending on the intensity of the storm system causing the occlusion.
1 to 2 hrs
A haboob can typically last anywhere from several minutes to a few hours. The duration can vary depending on the size and intensity of the dust storm and the weather conditions that generated it.
In most cases, no. A tornado depends on its parent thunderstorm as a source of energy. If the storm weakens too much, the tornado will dissipate. A typical tornado lasts less than 5 minutes. A typical thunderstorm lasts 20 to 30 minutes. That said, the storms that produce tornadoes usually last longer than a typical thunderstorms, in some cases several hours. As a result, some long-lived tornadoes do last longer than a typical, non-tornadic storm.
it depends on the natural metrological forces in place at the time of the storm. They can last minutes to hours
40 weeks from the last period.
a couple of days
Accupuncture is a great alternative treatment. The typical session will last 45 minutes.
until you can hear it
not yet answered
2 hours
ikd brug
I can assume that you mean the storm. They can last up to several weeks