For the "probable cause" that a criminal event has, or is about to occur, and by serving the warrant (search or arrest) the crime can be solved or prevented.
Probable Cause (partial definition): " . . is more than mere suspicion but less than the amount of evidence required for conviction."
You would need a good reason for a warrant because say if you didn't have a search warrant and you went into someones house, it would be a violation of the constitution: the rite to privacy.
A warrant is issued by a judge who is satisfied that good (probable) cause exists. Generally the only way to end a warrant is to appear.
It depends on the case and how much evidence is involved. The police are required to find enough evidence that constitutes "probable cause". Once probable cause has been discovered and an adequate affidavit has been issued, the judge will issue the warrant. If the police can quickly find probable cause, the warrant could be issued in a matter of a couple hours. If the police are having trouble, it could take months to years.
A police officer must have probable cause in order to arrest someone. They can arrest a person if they see a crime taking place or if an arrest warrant has been issued.
probable cause
A search warrant can be issued any time there is probable cause to believe there is evidence of a crime at a location. There are no limits to how many times or how often a warrant for the same premises can be issued.
They must provide a judge with probable cause to do a search.
Warrants are NOT issued by the police. Warrants are issued by the court - they are then given to the police to carry out. The police operate on PROBABLE CAUSE, and if you know that they want someone, perhaps they do not have sufficient probable cause for an arrest or, perhaps, they may not have been able to locate the individual.
For the "probable cause" that a criminal event has, or is about to occur, and by serving the warrant (search or arrest) the crime can be solved or prevented. Probable Cause (partial definition): " . . is more than mere suspicion but less than the amount of evidence required for conviction."
In the Bill of Rights the fourth amendment says the government must have a warrant and probable cause to search and/or seizure of your property.
probable cause
4th amendment
Probable cause