WxWatcher007

Tropical Weather Outlook NWS National Hurricane Center Miami FL 200 PM EDT Thu Jun 17 2021 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: 1. Cloudiness and thunderstorms associated with a broad area of low pressure over the southwestern Gulf of Mexico have become a little better organized today. This system is expected to move generally northward, and a tropical or subtropical depression is likely to form over the west-central Gulf of Mexico tonight or early Friday. A tropical storm warning will likely be required for a portion of the northern Gulf Coast later this afternoon, and Potential Tropical Cyclone advisories will likely be initiated on this system at 4 PM CDT (2100 UTC). An Air Force Reserve Unit reconnaissance aircraft is en route to investigate the disturbance this afternoon. Heavy rainfall will continue over portions of Central America and southern Mexico during the next couple of days. Heavy rains will also begin to affect portions of the northern Gulf Coast on Friday. Please consult products from your local meteorological service for more information. * Formation chance through 48 hours...high...90 percent. * Formation chance through 5 days...high...90 percent. Forecaster Pasch

We’re still six days out, but the idea of a decent post tropical low up in the region is gaining traction with me. EPS remains bullish (note it almost certainly wouldn’t be tropical at this latitude, but the ensembles are picking up on a relatively “strong” low possible)

This doesn’t look like a major tropical system, and we’ve been waiting basically two weeks for development, I think banter is fine lol.

Fair enough. Euro is the furthest left. GEFS keeps things away for the most part. I’m not ready to bite, but it’s something to watch.

EPS has been in lockstep. I’m a little more intrigued today.

That microwave image

I’d love to do that someday

As the resident tropical guy—this one is anything but fake. This system had a well defined center, a developing Central Dense Overcast, and while it was developing along a diffuse front, it was being powered by the Gulf Stream, making it warm core. No naked swirl here. It’s a lot easier observing these storms now due to the phenomenal tools we have, but we should also keep in mind that 1) this fits climo and 2) warmer seas create wider windows for short lived storms to develop.

Out to sea. Good looking storm though.

Tropical Storm Bill Discussion Number 3 NWS National Hurricane Center Miami FL AL022021 1100 PM AST Mon Jun 14 2021 Deep convection has increased in a cluster to the northeast of the estimated center. Scatterometer measurements showed a couple of 40-41 kt vectors over the southeastern quadrant of the cyclone. On this basis, the estimated intensity is increased to 40 kt, which makes this the second tropical storm of the season, albeit a rather high-latitude one. The system is in an environment of fairly strong southwesterly shear, but the diffluent upper-level flow has apparently contributed to some strengthening in a seemingly hostile environment. Some additional short-term strengthening could occur but by 36 hours, the cyclone should merge with a baroclinic zone while approaching Newfoundland and become extratropical. This transition is also shown by the FSU cyclone phase analyses of the GFS model fields. Bill is moving fairly swiftly northeastward, or 055/20 kt. The track forecast appears to be straightforward. The flow ahead of a large mid-tropospheric trough near the United States east coast should accelerate the system northeastward for the next day or two, and until the system dissipates. The NHC track forecast is similar to the previous one and not far from the model consensus. FORECAST POSITIONS AND MAX WINDS INIT 15/0300Z 36.7N 69.8W 40 KT 45 MPH 12H 15/1200Z 38.9N 65.1W 45 KT 50 MPH 24H 16/0000Z 42.6N 59.6W 40 KT 45 MPH 36H 16/1200Z 46.5N 54.5W 35 KT 40 MPH...POST-TROP/EXTRATROP 48H 17/0000Z...DISSIPATED $$ Forecaster Pasch

I knew you were joking Let’s bring this one home (seriously though, the EPS has wanted to bring remnants north)

Like I said, 5 bun run

Haha it’s stronger off the Mid Atlantic coast than the Gulf. Probably post tropical but still fun lol.

We sign for the 5 bun run of the Euro

12z Euro Out to lunch (probably) but great eye candy. (but watch the ensembles)

Tropical Depression Two Discussion Number 1 NWS National Hurricane Center Miami FL AL022021 1100 AM EDT Mon Jun 14 2021 Satellite and radar images show that the low pressure area that NHC has been following since yesterday off the coast of North Carolina has become better organized, with a small central dense overcast over the center and more prominent banding features. The low also has advanced ahead of a nearby diffuse stationary front, with that boundary lying northwest of the center. Considering the small core of the low, ample deep convection, satellite pattern, and that the low is feeding off of the thunderstorm activity (and not the front) -- it is now classified as a tropical depression. The initial intensity is set to 30 kt, which is our best estimate assuming strengthening from the 20-25 kt overnight ASCAT and surface observations. The depression is moving northeastward at about 18 kt. A large mid-latitude trough digging across eastern North America should cause the cyclone to continue moving generally northeastward, but faster, over the next couple of days. In about 48 hours, the system is forecast to dissipate near Newfoundland as it is absorbed by a larger extratropical low. Model guidance is in very good agreement on this scenario, and the NHC forecast lies near the track consensus. The depression has about 24 hours over marginally warm waters in low-to-moderate shear to strengthen before it moves north of the Gulf Stream and decays. Almost all of the intensity guidance shows the system becoming a tropical storm tonight, and considering the healthy initial structure, the official forecast follows that guidance. The low should lose tropical characteristics in about 36 hours due to very cold waters and dissipate near Newfoundland in about 2 days. FORECAST POSITIONS AND MAX WINDS INIT 14/1500Z 35.0N 73.7W 30 KT 35 MPH 12H 15/0000Z 36.6N 70.9W 40 KT 45 MPH 24H 15/1200Z 39.8N 65.3W 45 KT 50 MPH 36H 16/0000Z 43.6N 59.7W 40 KT 45 MPH...POST-TROP/EXTRATROP 48H 16/1200Z...DISSIPATED $$ Forecaster Blake

First discussion. Tropical Depression Two Discussion Number 1 NWS National Hurricane Center Miami FL AL022021 1100 AM EDT Mon Jun 14 2021 Satellite and radar images show that the low pressure area that NHC has been following since yesterday off the coast of North Carolina has become better organized, with a small central dense overcast over the center and more prominent banding features. The low also has advanced ahead of a nearby diffuse stationary front, with that boundary lying northwest of the center. Considering the small core of the low, ample deep convection, satellite pattern, and that the low is feeding off of the thunderstorm activity (and not the front) -- it is now classified as a tropical depression. The initial intensity is set to 30 kt, which is our best estimate assuming strengthening from the 20-25 kt overnight ASCAT and surface observations. The depression is moving northeastward at about 18 kt. A large mid-latitude trough digging across eastern North America should cause the cyclone to continue moving generally northeastward, but faster, over the next couple of days. In about 48 hours, the system is forecast to dissipate near Newfoundland as it is absorbed by a larger extratropical low. Model guidance is in very good agreement on this scenario, and the NHC forecast lies near the track consensus. The depression has about 24 hours over marginally warm waters in low-to-moderate shear to strengthen before it moves north of the Gulf Stream and decays. Almost all of the intensity guidance shows the system becoming a tropical storm tonight, and considering the healthy initial structure, the official forecast follows that guidance. The low should lose tropical characteristics in about 36 hours due to very cold waters and dissipate near Newfoundland in about 2 days. FORECAST POSITIONS AND MAX WINDS INIT 14/1500Z 35.0N 73.7W 30 KT 35 MPH 12H 15/0000Z 36.6N 70.9W 40 KT 45 MPH 24H 15/1200Z 39.8N 65.3W 45 KT 50 MPH 36H 16/0000Z 43.6N 59.7W 40 KT 45 MPH...POST-TROP/EXTRATROP 48H 16/1200Z...DISSIPATED $$ Forecaster Blake

Yeah, not an invest yet, but it might be the more impressive of the disturbances given its location. Back to 92L--I don't think anything has changed here. I still expect development of a TS level system, that might be fairly broad to start, but will be an efficient rain maker. We always knew this one would take time to develop. That fits climo.

It’s also still a bit early, but 92L might be something to watch for remnant impacts next week. Both the GEFS and especially the EPS maintain some sort of low (post tropical once at our latitude) tracking near or over the region.

Yeah. It’s a good reminder though of how quickly things can pop close to home. This is one of the more impressive ones I’ve seen in recent years.

The convective burst around 1am last night was excellent. It actually looked like a classic TC genesis signal on IR and radar IMO but the low was still tied to the front. Man I love tracking tropical.

Saw that burst of convection last night and said that’s something that can pop.