It looks like somewhat larger precipitation amounts fell to the east of Connecticut, for example Providence, Rhode Island received about 1.5 inches. But in Hartford, the 0.76 inch amount was less than any of the MOS forecasts.
Answer: Orographic lift is the tendency of atmospheric flow to be lifted up as it passes over hills and mountains, often leading to clouds and precipitation. As cold fronts, low pressure centers, etc. move through an area, rising motion occurs over both flat and mountainous areas because of the dynamics of the storm, but the extra orographic lifting in certain areas (depending on which direction the flow is coming from, etc.) enhances, or increases, the amount of precipitation.
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