March 2024 was a mobile affair, and often quite cyclonic, with only brief anticyclonic interludes between before the arrival of the next low. MSLPMSLP Mean sea level pressure is the pressure at sea level, or, when measured at a given elevation on land, the station pressure reduced to sea level assuming an isothermal layer at the station temperature. during the month was well below the LTALTA Long Term Average. This is usually defined as a 30 year period by the WMO., particularly in the last week.