mgerb

It's also in a very low lying valley. Just perfect radiational cooling conditions there. https://www.njweather.org/station/79

About 0.65" in my part of Somerset (Franklin Twp). Pretty intense storm, borderline severe, with some hail mixed in. Not a ton of thunder when it get here. Lots of small branches (and a few large ones) down in my neighborhood. Township is actually requesting no unnecessary travel, so think some damage was worse in other parts of town. Definitely glad to have some good rains over the past few days (over an inch here as well).

Looks like we'll pick up a hundredth or two here in Somerset. Not helpful.

Can confirm that this is likely, at least on the NJ side (subject to the final call by the author).

Yeah. I'm at 0.46" month-to-date (actually back to 7/27). Among the driest in the state (at least for CoCoRaHS). https://maps.cocorahs.org/?maptype=precip&units=us&base=std&cp=BluYlwRed&datetype=mtd&displayna=0&dc=0.9&key=dynamic&overlays=state,county&bbox=-76.86859130859376,39.65645604812829,-72.25433349609376,41.44066745847661

Say no more.

Very well may be. Sandy soils tend to heat up more quickly. Btw, there's a NJWxNet Mesonet station at Miller Airpark (separate from the AWOS), so you can always take a look at that too for corroboration with the KMJX reports: https://www.njweather.org/station/1032

It is. That's from the NJWxNet.

It's the flash flooding threat that's the concern.

Agree. Can see a (differential heating/outflow) surface boundary extending ENE from into central Somerset. I suspect storms will form/travel along the boundary. My hunch is from there south has the highest threat.

Yup. Can confirm. The sensor crapped out during maintenance this morning. So it'll be down for a while while awaiting a new sensor to be prepared. Sigh.

For sure. If you check out the NY state FORTS inventory here, you'll find a few dozen "New York" stations, some as far back as the early 1800s. But not sure if these are indeed all NYC stations and the data quality or completeness. But if interested, definitely suggest poking around there to try to learn more.

No one was "sitting on this data." Rather, it was uncovered through some old-fashioned library research combined with FORTS data. Here's some more detailed background:

Two drownings in Plainfield, unfortunately: https://www.nj.com/weather/2025/07/flooding-kills-2-women-in-vehicle-swept-into-brook-during-fierce-nj-storms.html 3.29" final total here.

Just a touch under 3.00" in Somerset near New Brunswick.