AfewUniversesBelowNormal Posted August 1, 2018 Author Share Posted August 1, 2018 Link to comment Share on other sites More sharing options...
Boston Bulldog Posted August 7, 2018 Share Posted August 7, 2018 We now have Subtropical Storm Debby in the North Atlantic. Should dissipate soon. Link to comment Share on other sites More sharing options...
yoda Posted August 7, 2018 Share Posted August 7, 2018 2 hours ago, Boston Bulldog said: We now have Subtropical Storm Debby in the North Atlantic. Should dissipate soon. Subtropical Storm Debby Discussion Number 1 NWS National Hurricane Center Miami FL AL042018 1100 AM AST Tue Aug 07 2018 The non-tropical low that NHC has been tracking over the North Atlantic for the past few days has developed subtropical characteristics and has been upgraded to subtropical storm status. The tropical-storm-force winds associated with Debby are well removed from the center as indicated by a recent ASCAT pass and are occurring within a cyclonically curved band of moderate convection. Although transition to a tropical cyclone is possible, no significant strengthening is anticipated since the cyclone will soon be moving over cool water and become fully embedded within a larger mid-latitude trough approaching from the west. Debby is expected to dissipate in about 48 hours or earlier. The best estimate of the initial motion is toward the north or 355 degrees at 14 kt. The subtropical storm should continue on this general track with a decrease in forward speed for the next 24 hours or so and then turn to the northeast ahead of the trough, which will eventually absorb Debby. FORECAST POSITIONS AND MAX WINDS INIT 07/1500Z 38.9N 48.5W 35 KT 40 MPH 12H 08/0000Z 41.0N 48.5W 35 KT 40 MPH 24H 08/1200Z 42.7N 48.5W 35 KT 40 MPH 36H 09/0000Z 44.0N 47.0W 30 KT 35 MPH 48H 09/1200Z...DISSIPATED $$ Forecaster Avila Link to comment Share on other sites More sharing options...
yoda Posted August 10, 2018 Share Posted August 10, 2018 Maybe something (i.e. weak crap) in the mid-Atlantic developing next week? Tropical Weather Outlook NWS National Hurricane Center Miami FL 200 PM EDT Fri Aug 10 2018 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: 1. An area of disturbed weather is located about midway between Africa and the Lesser Antilles. Strong upper-level winds are likely to limit development of this system for the next day or two, but some gradual development is possible after that time while the system moves slowly westward through early next week. * Formation chance through 48 hours...low...10 percent. * Formation chance through 5 days...low...20 percent. 2. A non-tropical area of low pressure is forecast to form over the central Atlantic in a few days. The low could gradually acquire subtropical or tropical characteristics while moving slowly northeastward for couple of days thereafter. * Formation chance through 48 hours...low...near 0 percent. * Formation chance through 5 days...low...20 percent. Forecaster Zelinsky Link to comment Share on other sites More sharing options...
yoda Posted August 15, 2018 Share Posted August 15, 2018 Hooray... looks like another STS will be appearing in the North Central Atlantic later today per the 2am TWO from the NHC... should only be around for a few days though Link to comment Share on other sites More sharing options...
yoda Posted August 15, 2018 Share Posted August 15, 2018 Just now, WxWatcher007 said: lol @ all these subtropical systems this season. STS Ernesto has appeared lol Link to comment Share on other sites More sharing options...
USCAPEWEATHERAF Posted August 16, 2018 Share Posted August 16, 2018 Invest 99L is born. Link to comment Share on other sites More sharing options...
Windspeed Posted August 18, 2018 Share Posted August 18, 2018 Positioning of the Azores High and the easterly jet is absolutely in no way conducive for healthy waves and the ITCZ much less tropical cyclone development right now. Anything that could or would consolidate in the MDR is only going to have gaps of very limited developmental time surrounded by hostile atmospheric conditions. As things are going, we're likely going to be waiting until mid-late September, perhaps even early October, for any substantial activity originating from the MDR this season. However, we still may have opportunities for development near the Bahamas, the western Caribbean and Gulf of Mexico with possible interactions of hanging stationary frontal boundaries and weak-to-moderate tropical waves. That would be an issue of timing though. Remember, it only takes one surface low in the right position to make for a memorable event. But at least for now or until a significant pattern shift, I'm not very keen on significant MDR development in 2018 with the current pattern that is in place. Link to comment Share on other sites More sharing options...
Climate175 Posted August 20, 2018 Share Posted August 20, 2018 On 8/15/2018 at 10:59 AM, WxWatcher007 said: lol @ all these subtropical systems this season. 4 of the last 5 storms were subtropical at one point. Link to comment Share on other sites More sharing options...
Jonger Posted August 20, 2018 Share Posted August 20, 2018 The system over Nebraska is more interesting than anything in the Atlantic.... and it's August 19th. Link to comment Share on other sites More sharing options...
bigtenfan Posted August 20, 2018 Share Posted August 20, 2018 11 hours ago, Jonger said: The system over Nebraska is more interesting than anything in the Atlantic.... and it's August 19th. Taking it a bit further the entire 384 GFS run which takes us to Sept 5 shows very little if any threats. Even the African wave train going forward through the 384 run looks pretty quiet for this time of the year Link to comment Share on other sites More sharing options...
MJO812 Posted August 20, 2018 Share Posted August 20, 2018 What a dud this season is turning out to be. Link to comment Share on other sites More sharing options...
nycwinter Posted August 20, 2018 Share Posted August 20, 2018 2 hours ago, Snow88 said: What a dud this season is turning out to be. the action is in the pacific whether lane will impact hawaii.. Link to comment Share on other sites More sharing options...
bigtenfan Posted August 20, 2018 Share Posted August 20, 2018 7 hours ago, Snow88 said: What a dud this season is turning out to be. After last season as a Florida home owner I have no complaints about that. Link to comment Share on other sites More sharing options...
shaggy Posted August 24, 2018 Share Posted August 24, 2018 On 8/20/2018 at 7:51 PM, WxWatcher007 said: It's wayyyy too early to close the shades on the season. Bearish? Sure. Calling dud before we even hit the peak of the season? Let's hold off on that lol. Sure its early to call it a dud but we don't even have any fantasy storms to track. Conditions just aren't favorable at this time. All we've had is mid latitude sub tropical garbage with the exception of chris. Link to comment Share on other sites More sharing options...
nycwinter Posted August 24, 2018 Share Posted August 24, 2018 On 8/20/2018 at 11:29 AM, Snow88 said: What a dud this season is turning out to be. in late august 1992 we did not have our first named storm of the season until andrew came along .. it only takes one huge storm to make a season.. Link to comment Share on other sites More sharing options...
Windspeed Posted August 28, 2018 Share Posted August 28, 2018 The Atlantic has been quiet and the MDR virtually dead so far, however, the MJO is forecast to head into phases 8-1 and potentially enhancing convection over the GOM, Caribbean and portions of the Atlantic in a few weeks. Granted, you still need cooperative Azores ridging and easterlies without a suppressed regime into the ITCZ to get an increase in activity out of the MDR. But favorable MJO phases could lead to a little fireworks from mid September into early October. Models will probably flip-flop for another week but it's at least something to keep an eye on as there is little else. The ECMWF weeklies hint at a cooler pattern in the SE CONUS with some fronts that manage to swing through, becoming stationary boundaries over Florida, the Bahamas and W. Caribbean. Definitely could lead to some development closer to home out of any persistent surface troughs with a favorable phase in place. The models are also starting to suggest some stronger easterly waves in the coming week, even closing one off into a TC before moving into the central Atl., though showing little support beyond initial development. As things stand, I am not yet confident that the atmosphere over the MDR will be all that favorable by September 10th. But even if it is not, remember, as the previous poster mentioned Andrew, that was also a Cape Verde system that managed to survive a similarly unfavorable MDR and hostile upper level environment. Andrew held together and snuck under a favorable extended W. Atantic ridge, being in the right place at the right time; the rest is history. Link to comment Share on other sites More sharing options...
hawkeye_wx Posted August 28, 2018 Share Posted August 28, 2018 The euro continues to try to develop something in the Bahamas/Gulf early next week. Link to comment Share on other sites More sharing options...
Windspeed Posted August 30, 2018 Share Posted August 30, 2018 GFS continues to be very bullish with a Cape Verde hurricane turning up into the central Atlantic and becoming a major hurricane. ECMWF has also been consistent with the same TC moving into the central Atlantic, but much weaker and traversing a less favorable upper level environment. I think we probably do end up getting our first long-tracking TC out of the MDR, but the GFS is being way too favorable and overdoing intensity. Whether a hurricane or struggling tropical storm, at least we'll have something to track. Link to comment Share on other sites More sharing options...
Windspeed Posted September 1, 2018 Share Posted September 1, 2018 12z ECMWF follows 0z and forms Gordon in eastern GOM and then crawls across the NW GOM coastal plain. Boy track position is going to be super critical if that resolves. Though not substantially deep, upper layer SSTs are running 29-31°C right on the coast. 200 miles north or south could be the difference between a coastal flooder or a Cat 3. Link to comment Share on other sites More sharing options...
shaggy Posted October 3, 2018 Share Posted October 3, 2018 Models hunting at some development soon. Fv3 most aggressive. Link to comment Share on other sites More sharing options...
NavarreDon Posted October 5, 2018 Share Posted October 5, 2018 Up to 40% 2 day & 70% 5 day. . Link to comment Share on other sites More sharing options...
LongBeachSurfFreak Posted October 7, 2018 Share Posted October 7, 2018 I guess no one cares about leslie, one of the most prolific swell generators of all time. The entire western Atlantic has had swell for over a week already with more to come Link to comment Share on other sites More sharing options...
KPITSnow Posted October 7, 2018 Share Posted October 7, 2018 1 hour ago, LongBeachSurfFreak said: I guess no one cares about leslie, one of the most prolific swell generators of all time. The entire western Atlantic has had swell for over a week already with more to come I know it is over a week away, but is Leslie going to make landfall in west Africa eventually? I’d have to think that would be an all time rare occurrence. Link to comment Share on other sites More sharing options...
MNstorms Posted October 7, 2018 Share Posted October 7, 2018 5 hours ago, KPITSnow said: I know it is over a week away, but is Leslie going to make landfall in west Africa eventually? I’d have to think that would be an all time rare occurrence. It's happened once. Tropical Storm Delta in 2005. Link to comment Share on other sites More sharing options...
hawkeye_wx Posted October 7, 2018 Share Posted October 7, 2018 I've been casually paying attention to Leslie. However, I didn't realize until now that it might be snaking around the Atlantic for another 10 days. That's pretty nuts. Link to comment Share on other sites More sharing options...
bugalou Posted October 8, 2018 Share Posted October 8, 2018 Several of the models for Leslie are trying to turn her westward again towards the week's end. Even if it doesn't its going to be interesting to see a Sahara or Portugal landfall, or if it manages to sneak into the Mediterranean! Link to comment Share on other sites More sharing options...
bugalou Posted October 10, 2018 Share Posted October 10, 2018 Wow! most of the models have now fallen in line to Leslie making a U turn and heading back west! This is going to further extend a lifespan that was already impressive. Michael is going to wreck havoc on the NE gulf coast, but man, Leslie has been one of the most interesting storms I have seen in a while. It will be interesting to continue to watch the evolution of this system. Link to comment Share on other sites More sharing options...
yoda Posted October 10, 2018 Share Posted October 10, 2018 Leslie be like I don't know where I want to go just yet... please wait while I decide from the HUGE spread... even Blake is tired of Leslie lol Hurricane Leslie Discussion Number 55 NWS National Hurricane Center Miami FL AL132018 1100 PM AST Tue Oct 09 2018 Satellite and microwave data indicate that Leslie has become a hurricane again, almost exactly a week after it did the first time. A WindSat pass from earlier today showed the development of an eye feature, and with the Dvorak estimates from TAFB and SAB at hurricane strength, the initial wind speed is set to 65 kt. The latest GOES-16 proxy visible imagery suggests that a ragged eye has formed, although the eyewall is open on the southwestern side. Leslie is atypically intensifying while moving south-southeastward at 8 kt. The hurricane should continue to lose latitude for a day or so then get accelerated east-northeastward by a mid-latitude trough until Friday. After that time, there is a ginormous spread in the model ensembles with Leslie's final destination ranging from Ireland all the way to missing the trough and turning around to the southwest due to a building eastern Atlantic subtropical ridge. Compared to 12 hours ago, more of the ensemble members are showing Leslie getting left behind, which is also reflected in the latest deterministic runs as well. Something tells me that Leslie has at least one more trick up its sleeve, so the official forecast shows this trend, but is very low confidence. With fairly low shear and marginally warm waters for the next day or two, there is no reason to expect that Leslie won't continue to intensify. Model guidance is higher than the last cycle, with the normally conservative ECMWF and GFS models even suggesting that Leslie becomes a category 2 hurricane in a couple of days. Most of the rest of the guidance is lower than those models, but the intensity forecast is shaded in the direction of the ECMWF/GFS, and is higher than the last NHC prediction. After that time, an increase in shear and lower SSTs should cause Leslie to weaken. It is even possible it will become a post-tropical cyclone by day 5, but I'm not going to show that at this time since I was too premature last night in this transition. FORECAST POSITIONS AND MAX WINDS INIT 10/0300Z 29.5N 42.6W 65 KT 75 MPH 12H 10/1200Z 28.4N 42.3W 70 KT 80 MPH 24H 11/0000Z 28.0N 41.6W 75 KT 85 MPH 36H 11/1200Z 28.6N 39.8W 80 KT 90 MPH 48H 12/0000Z 29.9N 36.4W 80 KT 90 MPH 72H 13/0000Z 32.2N 27.0W 75 KT 85 MPH 96H 14/0000Z 32.0N 21.0W 55 KT 65 MPH 120H 15/0000Z 30.0N 22.0W 40 KT 45 MPH $$ Forecaster Blake Link to comment Share on other sites More sharing options...
hlcater Posted October 10, 2018 Share Posted October 10, 2018 Let us remember this excerpt from then Subtropical Storm Leslie Adv 1 all the way back on September 23rd: Quote ADVISORY #1 ...SUBTROPICAL STORM LESLIE FORMS IN THE NORTH ATLANTIC... ...FORECAST TO BE A SHORT-LIVED CYCLONE..." Yea that didn't really pan out well. To make things worse, Leslie has had like 25 aces up her sleeve since then, the NHC just cant pin her down. GFS proceeds to keep Leslie alive through FH240 on the 00z. Link to comment Share on other sites More sharing options...
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