Share this:FacebookTwitterGoogleEmail<< Return to main summary page Mean sea level pressure (MSLP) and pressure/front analysis for the continental US, every 12 hours, from the Weather Prediction Center (WPC): 7:00 AM EST (12z Wed) – Wednesday, 1/1/13 10:00 PM EST (3z Thu) – Wednesday, 1/1/13 7:00 AM EST (12z Thu) – Thursday, 1/2/13 7:00 PM EST (00z Fri) – Thursday, 1/2/13 7:00 AM EST (12z Fri) – Friday, 1/3/13