Drink your green beer with the Jameson shot add-ons, but be aware that the coppers are roaming the streets with extra vigor this weekend.
Sobriety checkpoints are scheduled tonight in Mission Viejo and Saturday night in Buena Park.
Meanwhile, officers from the CHP, sheriff's department and various police agencies will be patrolling OC "hot spots" that routinely produce drunken driving wrecks and arrests.
The Sheriff's Department, which contracts police services in Mission Viejo, will set their DUI checkpoint up somewhere in the South County city. It's scheduled to run from 6 tonight through 2 a.m. Saturday.
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The following night, the Buena Park Police Department does the same at Beach Boulevard and 10th Street, from 7 p.m. Saturday through 2 a.m. Sunday.
Motorists will be checked for signs of impairment as well as whether they have valid drivers licenses.
The "Avoid the 38" Orange County DUI Task Force cites California Office of Traffic Safety stats that show during the St. Patrick's Day period last year, three people were killed and 96 were seriously injured in traffic accidents across California involving at least one driver or motorcyclist who blew .08 percent or higher.