NAO about to drop below zero for first time since mid-December

The NAO is about to drop below zero for the first time since mid-December. FYI, I don’t know too much about the NAO other then when it goes negative, and we have a northeast storm, it CAN be pretty intense, and mean snow for the Philly/Lancaster area. Well, it’s finally dipping down below the zero line. Is it too late for snow? I think there’s a small chance for a dusting the rest of the season, but I don’t see any more major snow accumulation anytime this season.

Here’s today’s NAO for your viewing pleasure. The black line is what it has been, and the red lines line indicate different model’s forecasts’ for the next week or so. (Click the image to enlarge.)

Tornado over the water west of FL

(Happening NOW @ 18:30z 3/7) There’s a really nice super cell that just developed off the coast of Florida. It’s so nice looking. Here’s some images from wunderground.com… I’ll post some from weatherTAP later if it stays together.

Storms off the southern coast

I’ve been watching the storms off the southern coast for the past few hours now. I have an image of a very nice line that was working its way across the gulf earlier tonight. Here’s a shot from WeatherTAP’s RadarLab HD (click to enlarge):

The red boxes indicate marine warnings. It’s not obvious in this shot, but as time moved on you saw that only the top half of the line was under a warning- I believe this is due to the fact that the National Weather Service only issues marine warnings out to a certain extent. I wonder who (if anyone) issues watches/warnings to sea vessels outside of US waters… hm. A cool shot, nonetheless. Enjoy.

Rain on the way… possibly severe weather, too

Not long after we got our first tease of warm, spring-like weather earlier this week does it look like some possibly severe weather will be on its way. Heavy rain for most of the Lancaster and Philadelphia areas, becoming heavy. The timing of this storm looks like it will begin sometime Friday afternoon, with the most significant rainfall falling overnight and into Saturday. After this storm, temperatures will trend lower than normal before warming up later on next week. That’s it for now… nor major storms forecast after this early weekend event at this point.

Squall line on HPC’s map

I thought this was pretty cool. From the HPC’s Mar. 5 03z surface analysis: