A monster storm is beginning to organize over the Northern PLains to the Southeastern US states this afternoon, a large energetic disturbance is causing a southwesterly jet to enhance precipitation across the Southeast, a large plume of low level moisture sits off the southwestern Peninsula of Florida at this time in the form of major thunderstorms producing a lot of rain. Cold air is coming southward from the arctic region in the form of an upper level trough this trough will enter the US tomorrow morning in the form of a potential closed off upper level low, the newest 12z models produce 1-2' of snow for the Cape and Islands, before all said and done central MA and CT will receive 1-2' while the eastern MA and RI coastlines will receive the most snow from this storm, this looks like an all snow event on all models. 2-3' looks more probable at this time, this is a high end snowstorm event with wind potentially reaching hurricane force in gusts, stay tuned!
This is my only snowfall map for the Noreaster of March 7-8th 2018. Thundersnow is apparent in NJ and NYC and especially in the warm conveyor belt south of SNE where lightning is immense underneath very cold cloud tops where convection is. these heavier snow rates will bring down the cold air from the 850mb layer of the atmosphere and lead to potential snowfall over the Cape and Islands tonight the R/S line will crash southeast as the surface low is forecasted to move southeast of Nantucket and Chatham and is being reported as east of the 20z analysis of the 12z/18z NAM runs and 12z RGEM run, this should bode well for the Cape and Islands as this will keep the 925mb 0C line southeast of the area and should promote dynamic cooling to the surface, we shall see, otherwise there is another nor'easter on the models for Monday of next week that looks a little more dangerous than this storm tonight. We shall see! Current observations: Harwich, MA 38F temp, ENE wind gusty, and raining
A significant snowstorm is likely for Southern New England on Sunday. Snowfall amounts near 6-10" is likely from NE PA to Boston, MA, on the immediate coastline temps will be closer to freezing so snowfall will be wetter consistency and therefore lesser amounts than slightly inland where I have 6-8" from west of 128 to NYC and Long Island, NY. Snowfall map below:
If you heard the names of Franklin, Gert and Harvey, you would think, hey those are just general names and nothing bad to think about here, but you put a hurricane in front and now you have, Hurricane Franklin, Hurricane Gert, and Hurricane Harvey, now you have built in fear. What if the US was in an unprecedented times, the weather was king and the oceans were warming without the impacts of global warming, nope Solar radiation was normal, so it can be that, no what if you were a meteorologist in the year 2029, trying to figure out the forecast number of intense hurricanes to form without the knowledge of why the ocean was warming into the 90-95F range from Puerto Rico westward to the US coastline throughout the Gulf Stream? You would only figure out the warming cause after the season was over, when no one was no longer in danger of hurricanes. The result is three super intense, super insane category six hurricanes with winds sustained over 200mph, gusts near 250-300mph, with Gert the most intense near 255mph sustained wind field at the core making landfall on SE Florida, Miami ground zero, then all three cat six hurricanes make landfall on separate areas of the US coastline within 36 hours of time. This is a tremendous story of man versus mother nature. I hope you want to read something awesome. I will attach it below. thanks!
- James Warren Nichols Productions
Dawn Awakening, Opening Segment.docx
Right now the pattern supports a cold and snowy regime with the PNA staying positive throughout the month, while the NAO stays positive, which means a rather progressive regime stays in place and we will likely see an oscillating AO pattern which produces some polar vortex lobes of energy to phase into the southern stream disturbances and that is how we get our nor'easters. I am still suspect thinking on the Monday storm, right now models have a second piece of energy phasing into the eastern US troughing just as the cold front tries to clear the New England coastline. NAM is west with the frontal zone and therefore the track of the surface low, while the GFS/CMC are further offshore with the secondary low. EURO somewhere offshore as well, but this model has done absolutely nothing but kill itself in this range, which is 48 hours out. Stay tuned, I think Monday event could trend better for South Coast of New England including the Cape and Islands.
Snow threats along with a wind threat exists on Monday while a snow threat exists on Friday. Increasing model support for a 3-6/4-8" event like the one on Tuesday for Friday and a bigger event 6-12"+ on Monday into Tuesday of next week Monday. Stay tuned to the forecasts as they will be increasingly likely for a significant event on Monday and a solid event on Friday. Trough in the east and ridge in the west pattern will continue throughout February
This is my final map for this snowstorm. Not as widespread with the snowfall amounts, 12:1 ratios make sense as it will get colder throughout the storm. Ocean enhancement/effect snows will add to the amounts over mid and outer Cape Cod. Not buying latest NAM run as the hires NAM shows significant accumulations for the south shore, Cape and Islands. Winds might be a problem with the fluffy snowfall. Blizzard like conditions will hamper travel tomorrow night into the morning hours on Tuesday. I will get video of the heavy snow as 1"/hour snowfall rates are possible for a time Tuesday morning.
Rain will start off our Sunday morning and will either stop entirely on Sunday night and then start as Snowfall on Monday afternoon. It will fall heavily for a few hours as there is decent lift in the Dendrite Snow Growth zone over the Cape and Islands, if the west trend continues into the 12z runs tomorrow afternoon hours then we could see more than 8" on the Outer Cape and Nantucket. This is my final snow map as this is the most likely amounts.
12z and 18z models beginning to indicate a secondary shortwave riding up the coastline forming a coastal storm on the frontal boundary and could become quite potent
-winter storm threat is increasing as models gain confidence in what disturbance will do what on Sunday through Tuesday
-Snow threat remains high, models increasing precipitation into the region as a frontal boundary plows offshore and the coastal low develops into a powerful nor'easter
-as Nor'easter develops a potentcy wind threat increases out of the northeast
- as nor'easter strengthens coastal flooding becomes a threat
-Please stay tuned to the latest updates from the Taunton NWS WFO
**Winter Storm Alert**
- development of a coastal nor'easter is becoming possible in the day 5-7 time frame
- cold air looks to reenter the region as a cold front passes through sometime between the 27th and 28th of January followed by a nor'easter threat around the 29th
- Region in most danger is Southern and Northern New England
-danger level is low at this time, due to uncertainty, stay tuned!
This map is the combined storm threats the next four days, I included the Thursday storm because I believe that the models will come northwest with the coastal storm on Thursday enough to add a few inches to the forecast for Cape Cod. I believe 12"+ will occur on the Cape, south and north shores of Boston, MA as this is combining all three events which it looks like all three will contribute 3-6" of snow to this part of the region. Most of the rest of the region will be 6-9 or 9-12" from the Wednesday event alone. Coastline gets their snow Wednesday into Thursday from two likely different events
My next post is about the potential snows from Saturday evening through Thursday morning. Models are in general agreement that the potentials for Ocean Effect Snow from Sunday through Tuesday and then storm produced snows from Wednesday through Thursday due to a coastal storm is on the table. However, this post will solely focus on the Ocean Effect Snow potentials. First is the event Sunday through Monday. Mesoscale WRF-NMM and WRF-ARW both support a single band of ocean effect snowfall impacting the region of Cape Cod from Hyannis to Chatham and Provincetown on Northerly winds from 900mb to the surface, which means a single convergence band is more likely than multiple bands of snow which are less intense. These two models keep the band over this region from about 12z Sunday to 00z Monday or later, that is at least 12 hours or more of heavy snowfall over this area of the outer cape, this could produce more than 6" of snow, we will have to see the next few runs until the event starts and then diagnose the real short range models and what they produce. For now the potential exists of a few inches to as much as 6" or more over the Outer Cape Cod area. Stay tuned!
Latest NAM run 00z shows a strong potential for ocean effect snow event from the Cape Cod Canal eastward to Provincetown on northerly winds, also unidirectional wind flow from 900mb to the surface indicates a single band event is probable along with a strong instability burst from 850mb to surface ocean temperature differential (Delta Ts) of 18-20C which is sufficient enough to produce heavy snows over the Cape and Islands. Also the flow is stronger than 10mph which should be sufficient enough for consistent band developing as we transition into a clipper low for the next few days. Big storm potential if the clipper low slows down its movement like the latest 12z guidance suggests at H5 with the low developing and closing off the H5 flow over the Northeast US. This will prolong the snow chances from Sunday morning to Wednesday afternoon for overall snow chances. Stay tuned!
12z models trending towards a major coastal redeveloping nor'easter come next Tuesday into Wednesday. NWS Taunton WFO has a 50% of snow in the forecast for Tuesday and 40% chance of snow for Wednesday, depending upon whether or not the trough closes off at H5 into a low will determine the duration of this winter storm, could be anywhere between 18-36 hours of snow
I added lollis of 24"+ to the map because I seriously think the storm hits the benchmark and pushes the snowfall further west, Hartford, CT to Boston, MA gets 12-24" of snow overall with less on the Cape and Nantucket due to more rain forecasted, this storm came west congrats people along and west of I95 corridor
Good evening folks,
This is my latest blog entry and the first official entry on the potential Blizzard of 2018, or Storm of the Century potential on January 3-5th 2018. The first image is water vapor imagery taken as of this hour, it represents the different ebs and flows in our country. Also it currently has three disturbances that will impact our storm potential this week. The arctic disturbance is circled over NW Canada in a pink dot, the second disturbance is in red, the Pacific shortwave and then the third is in green the sub-tropical jet which is already providing moisture and rains in TX and LA this evening and will enter the Gulf of Mexico in the overnight into the early morning hours. This green dot disturbance will be the southern stream disturbance that gets carried northward as our storm develops by the next disturbance in the polar jet and the arctic jet. These will be our catalysts towards a destructive nor'easter, perhaps with the intensity we have never witnessed south of the benchmark in history. I believe the only way this system hits the benchmark head on as it tracks up the coastline is if the trough is more centered over or west of James Bay, Canada and recent runs have adjusted this direction. So I am now saying the track officially of the storm should be between 25-75 miles east of the 40/70 benchmark location as a sub 960mb low, stronger than the Superstorm of 93, stronger than the Blizzard of 2017, stronger than the Blizzard of 2016. 2015 and more. My second image is my snow map of impacts to the East Coast and potential snow accumulations of light. moderate and heavy. And I highlighted in red where on the coast can expect blizzard conditions.
What I am thinking preliminarily right now for this weekend as ocean effect snow gives way to a northern stream (arctic jet stream) disturbance running through the flow amps a bit as it reaches the East Coast of the US and perhaps tries to tilt negatively for a time this Friday and Saturday. There are many different disturbances in the flow this weekend that could turn something meager into a beast of a storm. The runs this weekend of showing a monster hit are no longer showing this due to the presence of a strong upper level low over the NE pacific Ocean influencing the departure of the positive values in the PNA region. If this disturbance were to weaken or split into two groups, one moving westward into the northern Pacific and the other piece of the low moving into the US, then the ridge would be able to build itself upwards once again and positively influence our troughing in a more positive way this weekend. However, there is poor sampling in this part of the Pacific Ocean, and there is no way in knowing how the PNA ridge will react to a split in the disturbance energy field. Some models collapse the ridge temporarily while others recharge it later on into Monday through the rest of the New Year first week. therefore, models are now signaling there will not be a full phase between the Arctic jet and the Pacific jet so there will be no bombogenesis present this weekend, however, models are keying in on a potential one jet bombing low pressure center as it takes off, off the NJ coastline sometime Sunday and produce its own snow shield, this could put down a 1-2" swath of snow from western VT to eastern and southern ME and north of the MA Pike, while areas south of the MA Pike see 2-4" generally, while the South Coast of MA, Ri and SW CT see about 4-8" due to the high snow ratios and then the cape cod area east of Barnstable and Hyannis could see upwards of 8-12" or more of snow as ocean effect adds to the fluff factor and a very little of moisture can lead to high amounts of snow. I am expecting models to back more precip onto the SNE coastline than currently projected first because of the OES processes and also because I expect the storm to be further northwest in the end and strengthen a little faster in earlier developmental phase. I will have another map after the 00z runs tonight if I need to change anything.