April 6: Rain Approaching
Low pressure currently over the Great Lakes is on its way to our region. It will quickly jump to the NJ area tomorrow and then lift to the N out of our region by Friday afternoon. This should bring some over-running precipitation to the region as well as more concentrated rainfall along the cold frontal passage.
At 500mb, the wave appears to weaken before reaching our region. Also the trough axis is fairly positive. The Saturday shortwave is much more interesting to me given its more favorable trough axis and better-defined energy. I’ll be dedicating an article to that system tomorrow morning. This allows me to review better-sampled data overnight.
For now, here is the total expected amount of rainfall between Thursday morning and Friday afternoon. This is the latest GFS which is supported by short-range guidance as well:
Again, keep in mind that there should be a more concentrated band of precipitation along the cold front later Thursday (afternoon-evening). Embedded thunderstorms are possible along this frontal passage. I would at least expect some gusty winds to kick up.
In English: Rain is possible starting tomorrow morning and ending between Friday morning and afternoon. Heaviest rainfall should occur Thursday afternoon-evening with thunderstorms possible during. Other than that this seems like a run-of-the-mill moderate (if not just nuisance) rain and wind event. NWNJ is favored to see the most amount of rainfall (up to 1.5″) and SENJ is favored to see the least (.10″ to .25″). Have a great night and be safe! JC