U.S. National Radar

Comet Ison Viewing Guide

Friday, February 26, 2010

Weather synopsis: February 26


2:00pm a broad area of low pressure is pinwheeling nearly stationary right over the Northeast. This will generate additional snow specifically for the Tri-State area where an additional 10.0" are likely by Saturday morning after receiving about 20.8" of snow officially in Central Park as of 1:00pm this afternoon. Total storm snow accumulations in New York City will range between 20.0" to 30.0" by Saturday morning. This month has broken the all time monthly snowfall record for the month of February in Central Park which was set back in the year 1896 at 30.5", that's a 114 year old record! Else where in to the northern and western suburbs of New York City nearly 40.0" of snow will be common by Saturday morning. Buffalo, NY received around 4.0" to 6.0" of snow however the farther east your go the higher the amounts with 12.0" of snow in Rochester and Syracuse, and about 36.0" in Binghamton, NY. The forecast for the up coming week looks to be more settled. Temperature wise, we will see high temperature readings above freezing for the next few day, this will aid in snow melt but it could lead to urban flooding then re-freezing of melt water at night creating hazardous conditions on untreated surfaces.

Thursday, February 25, 2010

Weather synopsis: February 25



12:36pm the gears are in motion as a complex system churns over the Northeast. Snow is falling over much of the region, mostly confined west of the New York State and New England states boarder. The rain/snow line extends south just east of New York City. Through the course of the day however, expect colder air to wrap in to this Nor'easter and change the precipitation to snow into Long Island and parts of New England. The heaviest snow will be confined to northern New Jersey, New York City and then north to Binghamton and locations to the west of the Hudson Valley. Here is where snow accumulations are forecast to top 1 foot and even approach 2 feet around Binghamton. We could end up with 10.0" to 18.0" of snow in New York City with progressively lesser amounts to the east in to Long Island and New England. Heavy snow is expected through out New York State as well. Buffalo, NY should receive up to 10.0" of heavy wet snow with up to 1 foot in to Rochester and Syracuse. Along with the snow, winds will be a factor. the strong forcasted winds combined with heavy wet snow could lead to toppled trees, downed power lines, hundreds of thousands of power-outages and not to mention the high risk of roof collapse. The peak of the storm will occur late this evening in to the over night hours. This system should weaken substantially by Friday however, the upper level low associated with this Nor'easter will meander about through the weekend initiating additional chances of snow through Sunday.

Wednesday, February 24, 2010

Weather synopsis: February 24




12:00pm a slew of Winter Weather advisories have been posted for much of the Northeast by the National Weather Service in anticipation of a Nor'easter that will impact a large area with significant snowfall. This storm will impact regions that have already received mammoth amounts of snow with this month's dynamic weather pattern. Heavy snow is expected on Thursday and Friday with additional snow on Saturday as the storm whinds down. 1 to 2 feet of snow is likely from Philly north up to Binghampton and Albany. As of the current expectations, NYC should miss the brunt of the storm but not after receiving nearly 8.0" of snow. Warmer air over Long Island should keep precipitation mostly in the form of rain. There is still uncertainty with the storm track which could mean the difference between a rain storm in the Tri-state or an accumulation of over 12.0" of snow in to New York City and White Plains. In to southern New England rain will be the issue from coastal Maine down to Boston and Hartford. Heavy snow will spread inland bringing significant snow in to Rochester and Buffalo as well were up to 8.0" of accumulation are likely. Wind will also be an issue most notably near the coast where 40MPH to 50MPH gusts will make for difficult travel.

Tuesday, February 23, 2010

Weather synopsis: Frebruary 23


4:00pm a storm system is moving slowly across the Northeast. This storm features rain near the coast and snow inland with a narrow band of mixed precipitation were a maritime air mass and a arctic air mass meet. This low pressure system produced a dreary day in Buffalo yesterday with a mixed bag of precipitations going back and forth between freezing rain, sleet and snow through the day. This storm system will meander about right through the week over the Northeast. This is anticipated to be a deep low pressure system as it phases with another low pressure system later in the week. Given the nature of the storm system's dynamics, there is uncertainty as to what outcomes might transpire, however at this time there is confidence that a wide spread accumulating snow will affect a good part of the Northeast this week between Thursday and Saturday. At this time, a significant snow event is not out of the question. Behind this system a colder air mass will move in dropping temperatures by some 5°F to 15°F. Elsewhere around the Nation, snow is once again affecting the South in to Dallas, TX where up to 6.0" of accumulations are expected. This is the same storm system that is anticipated to phase with a low pressure system over the Northeast.

Friday, February 19, 2010

Weather synopsis: February 19


3:00pm the weather is tranquil right now but this month has been an active one all around the country. Temperatures in the Northeast are right about average and in some cases slightly above the average. The Lake Effect Snow showers have subsided but not before dumping some 3.0" to 6.0" of snow accumulation in Buffalo this week. A storm system will move into the region early next week and it will bring increased chances of snow in the Northeast from the Great Lakes to the Atlanctic coast. Along with the snow, this system should cool down temperatures by 5°F to 15°F with breezy conditions.

Friday, February 12, 2010

Weather synopsis: February 12


1:48pm this February is proving to be an active weather month across the nation. Another storm system is plaguing the nation, this time southern states are being impacted by heavy rain and snow. A storm system is working its way eastward affecting the Gulf coast with wintry precipitation. This same system produced up to 1 foot of snow in Dallas, TX braking an all time snowfall record there. Even the state of Florida is getting snow. Pensacola, FL should receive up to 1.0" of snow with this round of weather. Cities like New Orleans have been put under a Winter Storm watch for the potential for Snow. Here in the Northeast, yet another storm system will move in bringing additional chances for snow in to New York City, Long Island and Boston. NCEP forecast models indicate a clipper system to move in by Tuesday. There is a potential for up to 6.0" of snow in and around the New York City metropolitan area. Here in Buffalo we will continue to see Lake Effect snow showers for the next few days although no significant accumulations are expected at this time. Temperatures will remain marginally cool so no big arctic air intrusions are expected at this time.

Wednesday, February 10, 2010

Weather synopsis: February 10


9:40pm the blizzard affecting coastal regions of the Northeast is winding down but certainly not after dumping over 1 foot of snow into New York City. Officially 12.0" of snow has been reported in Central Park and 13.0" in the Bronx and another 1.0" to 3.0" inches of additional snow accumulation is expected before the storm completely pull out of the metro area. South of the Tri-state in Philly 15.0" of snow has been reported and over 19.0" of snow reported in Baltimore. To add insult to injury, the winds have been howling near 40MPH creating a blizzard and prolonged white out conditions. This is certainly one for the records as over 100,000 people in 25 States were affected. This is the second storm to affect portions of the Northeast in a matter of just a few days. NCEP forecast models now indicate the potential for yet another storm system of similar proportions to bombard the Northeast with more heavy snow by this up-coming Tuesday! The current persistent storm track of the sub-tropical jet stream combined with a constant flow of cold arctic air by the northern jet stream has created a virtual parade of snow storms aimed at the Northeastern US. It is still too early to accurately predict the impacts of this next round of heavy snow but it is becoming more likely as time progresses that yet another snow storm is on deck.

Tuesday, February 9, 2010

Weather synopsis: February 9



11:09am a Nor'Easter is in the making as two storm systems that have phased together over night in the Ohio River Valley progresses eastward towards the coast. A third low pressure system is forecast to develop off shore of the Long Island coast tonight and then rapidly intensify. This rapid intensification will produce a bonafied blizzard into the New York City metropolitan area where 1 to 2 feet of snow is likely along with strong winds over 40MPH. This combination of heavy wet snow and strong winds will likely cause power outages and topple down some trees especially near the coast where winds will blow more fierce. Visibilities will drop to zero and produce white out conditions for a prolonged period during the height of the storm. The worst weather will hit the tri-state region right around Noon time and then progress through the early afternoon. Though it will be below freezing some sleet will mix in at times into eastern Long Island as the storm's intensity churns the atmosphere above. Winter Storm Warnings are in effect until 6am on Thursday when the storm finally pulls out of the region. NCEP forecast models indicate that this storm will develop a dry slot, if this is the case it will lessen snowfall totals though a significant amount is still expected regardless. Impact from this storm will be felt from the Great Lakes down to the Mid-atlantic and up to southern New England. The worst of the weather will come with the development of the coast storm that will produce the strong winds from D.C. to Boston.

Monday, February 8, 2010

Weather synopsis: February 8



11:20am a historic Nor'easter has hammered portions of the Mid-atlantic last weekend dumping up to 3 feet of snow in locations in and around the Philly, Baltimore and Washington D.C. corridor. Thankfully this storm strayed away from southern New England and Long Island where only a few snow flurries were reported however, next time we might not be so lucky. NCEP forecast models predict another storm system of similar proportions to develop off the Mid-atlantic coast then move up the eastern seaboard all the while rapidly intensifying into a Nor'easter. This storm will likely impact the Washington D.C. region once again with heavy amounts of snow. This coastal storm will move northward bringing heavy snow to New York City, Long Island and southern New England including Hartford, Providence and Boston. This storm system will also have an impact into western New York and interior Pennsylvania where Winter Storm Watches have been issued. Even Buffalo will get an accumulating snow out of this storm. Though it is still too early to make an accurate snowfall forecast, the heaviest amounts of snow will be along the I-95 corridor from D.C. to Boston including the states of Maryland, Delaware, New Jersey, eastern Pennsylvanian, southern New York, Connecticut, Rhode Island and eastern Massachusetts. This is the most densely populated section of the country and millions of people will be affected by this storm. The current time frame is as follows: Snow will begin by Tuesday in the western fringes including Buffalo, NY then work its way east. The storm will then re-develop off the coast and intensify Tuesday night into Wednesday with the brunt of the storm into New York City and Long Island between midnight Tuesday and midnight Wednesday

Thursday, February 4, 2010

Weather synopsis: February 4


11.00am the weather in the Northeast is being dominated by a High Pressure system. This system is providing fair weather. This is the calm before the storm as I expect this area of High Pressure to give way to a storm system tomorrow that will likely produce pretty heavy snowfall for the Mid-atlantic and southern New England. The storm system should re-develop over the Atlantic Ocean and transcend into a full blown Nor'easter. 1-2 feet of snow is not out of the question from Long Island down to the Delmarva peninsula including the big cities like New York, Philadelphia, Baltimore and Washington D.C. The heaviest snow should fall right along the coast. This storm system will produce snowfall rates of up to 3.0" per hour at times. In NYC the snow will likely start Friday evening around 9:00pm and continue through the Noon time hour on Saturday. This storm system is due in part to an El NiƱo weather pattern with a storm track aimed at the Northeast. NCEP forecast models hint towards a continuation of this storm track, if that is the case I expect this month to be an active weather month for the region.

Monday, February 1, 2010

Weather synopsis: February 1


3:15pm temperatures in the Northeast are bearable ranging between mid 30s along the coast, mid 20s in the interior and 10s into Norther New England. These temperatures are rather seasonal for this time of year and should stick around trhough the week. Tomorrow light Lake Effect Snow showers could redevelop but this wont be as impressive as last weeks snow. Tonight clouds will increase and snow flurries will develop late. The chance for snow will increase into the afternoon hours tomorrow and continue into the evening in Buffalo. Winds will be light and any snow that does fall will not amount to much, maybe less than an inch of snow. Tomorrow is Ground Hog's Day and we'll see if we have another 6 weeks of winter or an early spring to look forward to.