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Tropical Weather Outlook NWS National Hurricane Center Miami FL 800 AM EDT Sat Sep 19 2026 For the North Atlantic...Caribbean Sea and the Gulf of America: 1. Eastern Subtropical Atlantic (AL99): Showers and thunderstorms have become more concentrated near the center of a low pressure system located several hundred miles southwest of the western Azores since yesterday. A short-lived tropical depression or tropical storm is expected to form later today or tonight while moving north-northeastward at about 5 mph, but remaining well to the southwest of the Azores. Upper-level winds are forecast to become less conducive for development beginning late Sunday. * Formation chance through 48 hours...high...90 percent. * Formation chance through 7 days...high...90 percent. Forecaster Berg

6z AIEPS entire run fwiw

Methuen????

Because their models told them sunny but they dont look up

Looks a little torchy for Pit2, though that might not really matter. Some decent snows possible.

Low of 55. Nice day today before we get a prolonged pattern shift.

Among the dynamical models the CMC is pretty much alone for now in developing a low close to the coast and giving much of the area significant rain.

Recent 3 day mean CFS’ have cut way back on the degree of cold in Feb: 9/16-18 Compare that to this from 8/7-9:

6z AIEPS likes mid week.

Low of 54 at WXW1 Low of 37 at WXW2–coldest of the season so far. Low of 28° at SLK.

Why does my forecast from the NWS say Mostly Sunny when its Mostly Cloudy ? Seems like I have to ask this same question over and over again since they are experts at screwing up sky conditions

There indeed have been UK runs with false TCs though not false canes. But in this case, all models have a low off the NE coast as opposed to it being just on the UK. But would it be T, ST, or ET and would it stay offshore?

Looks like the general trend on guidance is faster movement of the front to our south, and the precip from the initial disturbance stays mostly to the north. Have to see what happens mid to late week with the potential coastal low for significant, more widespread rain for much of the area.

36° here. I’m headed to FL for the week so I haven’t paid much attention to the forecast for here. Doesn’t look too bad though. Cool with some showers?

6z

You've been posting lots of UK runs showing a tropical cyclone lately with nothing coming of it. UK has been just as bad as GFS with its fantasycanes.

0.89” of precipitation yesterday. For all the hype of a big rain event it ended up being a run of the mill damp fall day in Minneapolis with a high of 63. 5-7” rainfall totals across the I-90 corridor of southern Minnesota.

The 5 model blend for Augusta from Monday - Wednesday has dropped from 2.11" to 1.65" since yesterday.

Fall is coming folks.

i had to close my window feeling very chilly inside..

dt wxrisk is convinced a major northeaster is happening next week..

Need to check the UKMET. Now that the CMC has high 500 mb verification scores as well, cant go wrong with that combo!

99L's low-level circulation appears to be tightening up under the moderate convective canopy. There is clearly mid-level spin parked over the LLC now. This should end the named storm drought this morning. How strong it can get before environmental conditions deteriorate by Monday-Tuesday remains questionable. Though you can see the shear axis is positioned dangerously close, just south of the system, made evident by the screaming upper cirrus flow on satellite, I could easily see this topping out around 50-60 kts if it can remain just north if it. SSTs are warm enough, combined with a cold pool aloft, to continue supporting convection in the short term.

It’s part of the same pattern which produced the record 600 dm pattern this week. The strength of that ridge may be key to how much rain we actually get this week. Some of the stronger high pressure models like the OP Euro keep most of the rain offshore this week. Other models like the AIFS and CMC have more rain especially near the coast with weaker high pressure to the north. But like we saw with the blizzard in February, the AI and other models beat the Euro which was too suppressed with the coastal low. So this will be a good test of how the AI models handle warm season wavelengths with East Coast lows.