The development of the blizzard/winter storm began along the southeast coast on Wednesday January 3, 2018. An amplifying upper level trough spawned the development of low pressure off the coast of Florida.
Every event with a place to put it; 12 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS OKX wrote it up.
The development of the blizzard/winter storm began along the southeast coast on Wednesday January 3, 2018. An amplifying upper level trough spawned the development of low pressure off the coast of Florida. The low pressure rapidly intensified on Wednesday night through Thursday January 4, 2018 as it moved north-northeast along the coast. The low passed just east of the 40 N 70 W benchmark Thursday afternoon. The central pressure when the storm developed was around 1004 millibars at 1 pm Wednesday. 24 hours later, the central pressure fell to around 950 mb, approximately a 54 millibar drop. The rapid intensification of the storm led to heavy snow, strong winds, and blizzard conditions across Fairfield and New London Counties. Near-blizzard conditions occurred in New Haven and Middlesex counties due to the heaviest snow bands setting up to the east and west. Thundersnow was also observed across southeast Connecticut.
System-wide delays and cancellations occurred on the Metro North Railroad. Thousands of homes and businesses also lost power.
There were numerous other accidents across southern Connecticut.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS New York, NY wrote its last area forecast discussion before the first event at Jan 4, 12:31 AM EST, 1 hour 29 minutes earlier.
Area Forecast Discussion
National Weather Service New York NY
1231 AM EST Thu Jan 4 2018
.SYNOPSIS...
A storm system off the coast of the Southeast United States
will move north overnight and rapidly intensify as it approaches
the coast of southern New England on Thursday. This storm will
move into the Canadian Maritimes by Thursday night. Bitterly
cold air will arrive in the wake of this system and last through
the weekend. Temperatures will moderate Monday ahead of another
system which will impact the area Monday night into Tuesday.
&&
.NEAR TERM /UNTIL 6 AM THIS MORNING/...
Forecast is on track. 00z NAM is around 5mb deeper than 12z run
with sfc low as it passes southeast of the area, although track
is similar. Not making any changes to headlines based on this,
will let mid shift see more data, which also incorporates
dropsondes from reconnaissance flight sent into the storm
earlier today. 991mb low off the Carolina coast will track NE
overnight with clouds lowering and thickening. Will need to
watch the convection near the center of the low as the latent
heat release tends to impact track and intensity.
Otherwise, operational models in some cases show as many as 3
to 5 surface lows in the area near and east of the Gulf Stream
off the Southeast United States coast tonight. It is possible in
some instances the models may be struggling to resolve some of
these meso-lows within the larger scale storm structure and
evolution. This may play a role in how quickly they intensify
the overall storm and also track once it develops.
Given how cold it is, precipitation overnight will be all snow.
The dry atmosphere will initially limit precipitation from
reaching the surface but model cross sections show a rapid
saturation of the atmosphere and thus once snow starts to fall
it should have no trouble keeping on going. The WRF remains the
most aggressive model as it deepens the surface low quicker and
overall with respect to pressure and thus it is the first to
crank out QPF across our area tonight. The best start time looks
to be between 06Z and 09Z across Long Island and southern CT
with snow starting closer to 09Z to 12Z from NYC and especially
points north and west. Get an early start to your commute
tomorrow morning if you need to travel.
Temperatures tonight will not be as chilly as what we've seen
recently due to the clouds and southerly flow with readings in
the low to mid 20s along the coast and teens inland.
&&
.SHORT TERM /6 AM THIS MORNING THROUGH 6 PM FRIDAY/...
And travel conditions will get worse as the morning goes on as
the surface lows start to consolidate off or northeast of the
Outer Banks and the low starts to rapidly intensify or bomb with
respect to its pressure. The latest models have had a westward
track and thus we again have had to shift the forecast to
account for this. As mentioned above the WRF is the most robust
with QPF with the Hi-Res NMM the lowest. A blend of the
ECMWF/GFS/WRF operationally was followed for QPF.
Some points of note based on the latest models:
- This storm will be a quick hitter as it rapidly moves up the
coast. Most areas will see a 6-12 hour window for steady snow
of at least moderate intensity.
- There is a warm nose noted in model forecast soundings along
the coast with the thermal profile although it is generally at
or below freezing except right at the surface. Thus some sleet
is expected to mix in along the South Shore of Suffolk County,
especially on the South Fork and in southeast coastal CT in
the Groton-New London-Mystic area. This will hold down amounts
in these areas with respect to snow.
- Snow well north and west of The City (mainly in Orange County)
will come in a very short window of one or two main bands.
- Snowfall rates per SPC products and looking at model QPF could
exceed one inch per hour especially from The City on eastward.
There is a strong belt of winds at 925 mb that will move over
the area Thursday morning from the northeast progged at 40-60
kts that will mix down to the surface. This was also factored
into winter headlines.
In addition, the area will be an exit region of a 170 kt jet
streak at 250 mb, which will enhance lift. This may also aid in
QPF amounts inland and will need to be watched as the event
unfolds.
Thus snow amounts given the westward trend in the models were
bumped up in all areas. We opted to go with a Blizzard Warning
for all of Suffolk though there is concern over the southeast
portion if too much sleet comes in. The window for blizzard
conditions will be narrow but given the wind upstairs that could
mix down to the surface, it is hard to not be concerned about
the wind. If the storm tracks a bit more west, then blizzard
conditions may be seen into parts of coastal CT as well as
Nassau County. Traveling in Suffolk County will be impossible
especially at the height of the storm on Thursday in the late
morning and afternoon.
In The City, we are right on the edge of moderate QPF amounts,
thus it will not take much to shift snow amounts either way. As
of now, confidence is best in Queens for the highest amounts and
there may be a very sharp gradient between eastern Queens and
Midtown Manhattan.
Snow will start to taper off early tomorrow evening inland with
flurries or a steadier snow shower possible at the coast through
the first half of tomorrow night. Temps will plummet as cold
air advects on in as the storm pulls into the Canadian Maritimes
and deepens.
For Friday the main impact on temps will be how long clouds
hold. Model time heights stay moist through the morning. Gusty
winds will create very low wind chills as maximums stay in the
teens. Record low maximums are a possibility in some areas.
&&
.LONG TERM /FRIDAY NIGHT THROUGH WEDNESDAY/...
** Dangerous cold for Friday night into Sunday morning. **
Arctic high pressure slowly builds into the region Friday night
through Sunday. Dry weather will prevail, however the coldest
airmass this season so far is expected to move in. 850mb
temperatures are forecast to drop to around -25C Friday night into
Saturday morning. Decent agreement among various models regarding
high and low temperatures through the weekend, but leaned towards
the colder side of guidance given the anticipated snow cover. For
Friday night into Saturday morning, winds and temperatures will
combine for wind chill values ranging mostly from -15 to -25. A wind
chill advisory will likely be needed eventually for the entire
area. Winds during this period around 20 mph and gusting to around
30 mph. Friday night's lows will be in the single digits for coastal
sections and zero to -5 across much on the interior, and highs
Saturday only 8 to 15 above. With lighter winds Saturday night, low
temperatures drop to 0 to 5 above for coastal spots and 0 to 5 below
for most inland areas. A wind chill advisory could be needed again
for some of these inland spots.
Thereafter, temperatures will moderate through early next week as a
frontal system approaches with a strong return SW flow. Temperatures
will likely rise to above freezing both Monday and Tuesday with
chances of precipitation. Initially, there will be a chance of snow
all locations on Monday, but warming aloft will allow for a
transition to rain at the coast and a wintry mix inland. With the
arctic high passing to the south of the region over the weekend,
this will hinder cold air damming along the lee of the Appalachians.
Models also differ in the timing/overall strength and progression of
the frontal system with a potential frontal wave Monday night into
Tuesday. Overall best chances of PCPN with this system appears to be
Monday night into Tuesday morning. High pressure builds back in
thereafter into Wednesday with perhaps a dry cold front passage
during the day.
&&
.AVIATION /06Z THURSDAY THROUGH MONDAY/...
**High Impact Winter Storm Late Tonight and Thursday**
Low pressure off the Carolina coast will deepen rapidly overnight
and track to off the mid Atlantic coast by Thursday morning. The
storm continues to intensify Thursday, tracking to east of Cape Cod
by 00Z Friday, and into the Canadian Maritimes by the end of the
forecast period.
VFR with conditions lowering to MVFR to IFR, especially at the
southern terminals first, after 06Z, as light snow develops.
Moderate to periods of heavy snow and blowing snow develop Thursday
morning with IFR to VLIFR conditions. There may be a brief period of
sleet mixed with snow at the start east of the NYC terminals.
Snowfall rates around 1 inch per hour at the NYC airports, with
higher rates possible east and lower rates north and west.
Storm total snow forecast:
KJFK: 6-8
KLGA: 5-8
KEWR: 4-6
KTEB: 4-6
KHPN: 4-7
KSWF: 2-4
KBDR: 6-9
KISP: 8-12
KGON: 7-9
Snowfall rates and amounts subject to change based on the exact
track of the system.
Winds will have a major impact to the terminals especially this
morning through the early evening, as the storm deepens and
tracks the nearest to the terminals at that time. There is the
potential for occasional gusts up to 45 KT this afternoon with
LLWS possible.
.OUTLOOK FOR 06Z FRIDAY THROUGH MONDAY...
.Late Thursday night...VFR. WNW 15-25 kt, G25-35kt.
.Friday-Sunday...VFR. WNW G30-35 kt possible thru Friday
aftn.
.Monday...sub VFR conditions possible with rain snow mix,
possibly changing to rain.
&&
.MARINE...
Conditions rapidly deteriorate tonight as low pressure
approaches from the south and rapidly deepens as it does so. Winds
quickly increase to gale force after midnight tonight from the
northeast. Then winds back to the north/northwest Thursday, with
gales continuing through Friday at a minimum.
For the ocean waters east of Moriches inlet, expect a period of
storm force winds, or gusts up to 50 kt, during the day Thursday. A
few gusts to 50 kt are possible over the extreme eastern portion of
the LI Sound. Storm posted for ANZ350 (ocean waters east of Moriches
Inlet NY), but not for ANZ330 (Eastern LI Sound) at this time.
Gales likely continue through Friday and potentially into Friday
night, and then even into Saturday morning for the ocean waters. SCA
conditions then linger through Saturday night, with the potential
for all waters to be below advisory criteria by late Sunday morning.
Sub-SCA conds then prevail through Monday. Freezing spray headlines
may also eventually be needed into Sunday.
&&
.HYDROLOGY...
No significant hydrologic impacts are expected through the week
at this time.
&&
.TIDES/COASTAL FLOODING...
A Coastal Flood Advisory was issued for the Thursday morning
high tide, with locally moderate flooding expected in the Great
South Bay. Tidal departures of 3/4 to 1 1/2 ft are needed for
minor coastal impacts in vulnerable areas.
Timing of windshift of strengthening winds from NE to N will be
critical. A later shift, will increase the potential for minor
coastal flooding.
&&
.EQUIPMENT...
NYC NOAA Weather Radio Station KWO-35 (162.55 MHz) is off the
air for an extended period of time.
&&
.OKX WATCHES/WARNINGS/ADVISORIES...
CT...Winter Storm Warning until 1 AM EST Friday for CTZ005>012.
Coastal Flood Advisory from 11 AM this morning to 2 PM EST
this afternoon for CTZ009-010.
NY...Coastal Flood Advisory from 9 AM this morning to 2 PM EST this
afternoon for NYZ079>081-179.
Blizzard Warning until 1 AM EST Friday for NYZ078>081.
Winter Weather Advisory until 1 AM EST Friday for NYZ067>070.
Winter Storm Warning until 1 AM EST Friday for NYZ071>075-
176>179.
Coastal Flood Advisory from 9 AM this morning to noon EST
today for NYZ074-178.
Coastal Flood Advisory from 11 AM this morning to 2 PM EST
this afternoon for NYZ071-078-177.
NJ...Winter Weather Advisory until 1 AM EST Friday for NJZ002-004-
103>105-107.
Winter Storm Warning until 1 AM EST Friday for NJZ006-106-108.
Coastal Flood Advisory from 9 AM this morning to noon EST
today for NJZ006-106-108.
MARINE...Gale Warning until 6 PM EST Friday for ANZ330-335-338-340-345-
353-355.
Storm Warning from 6 AM this morning to 6 PM EST this evening
for ANZ350.
Gale Warning until 6 AM EST early this morning for ANZ350.
&&
SYNOPSIS...JC/CS
NEAR TERM...CS
SHORT TERM...CS
LONG TERM...JC
AVIATION...19
MARINE...JC/Goodman
HYDROLOGY...JC/CS
TIDES/COASTAL FLOODING...
EQUIPMENT...Hazardous Weather Outlook National Weather Service New York NY 1134 PM EST Wed Jan 3 2018 NJZ002-004-103>105-107-NYZ067>070-050445- Western Passaic-Eastern Passaic-Western Bergen-Eastern Bergen- Western Essex-Western Union-Orange-Putnam-Rockland- Northern Westchester- 1134 PM EST Wed Jan 3 2018 ...WINTER WEATHER ADVISORY IN EFFECT UNTIL 1 AM EST FRIDAY... This Hazardous Weather Outlook is for northeast New Jersey and southeast New York. .DAY ONE...Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Weather Advisory. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Weather Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. && This Hazardous Weather Outlook provides a summary of potential widespread hazardous weather events that may reach NWS warning criteria. Most long fused NWS watches...warnings and advisories in effect are highlighted. Please refer to the latest NWS forecasts for weather not meeting NWS warning criteria. NJZ006-106-108-050445- Hudson-Eastern Essex-Eastern Union- 1134 PM EST Wed Jan 3 2018 ...WINTER STORM WARNING IN EFFECT UNTIL 1 AM EST FRIDAY... ...COASTAL FLOOD ADVISORY IN EFFECT FROM 9 AM TO NOON EST THURSDAY... This Hazardous Weather Outlook is for northeast New Jersey. .DAY ONE...Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Storm Warning. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Storm Warning. Coastal Flood Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. && This Hazardous Weather Outlook provides a summary of potential widespread hazardous weather events that may reach NWS warning criteria. Most long fused NWS watches...warnings and advisories in effect are highlighted. Please refer to the latest NWS forecasts for weather not meeting NWS warning criteria. CTZ009-010-NYZ071-177-050445- Southern Fairfield-Southern New Haven-Southern Westchester- Northern Nassau- 1134 PM EST Wed Jan 3 2018 ...WINTER STORM WARNING IN EFFECT UNTIL 1 AM EST FRIDAY... ...COASTAL FLOOD ADVISORY IN EFFECT FROM 11 AM TO 2 PM EST THURSDAY... This Hazardous Weather Outlook is for southern Connecticut and southeast New York. .DAY ONE...Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Storm Warning. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Storm Warning. Coastal Flood Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. && This Hazardous Weather Outlook provides a summary of potential widespread hazardous weather events that may reach NWS warning criteria. Most long fused NWS watches...warnings and advisories in effect are highlighted. Please refer to the latest NWS forecasts for weather not meeting NWS warning criteria. CTZ005>008-011-012-050445- Northern Fairfield-Northern New Haven-Northern Middlesex- Northern New London-Southern Middlesex-Southern New London- 1134 PM EST Wed Jan 3 2018 ...WINTER STORM WARNING IN EFFECT UNTIL 1 AM EST FRIDAY... This Hazardous Weather Outlook is for southern Connecticut. .DAY ONE...Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Storm Warning. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Storm Warning. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. && This Hazardous Weather Outlook provides a summary of potential widespread hazardous weather events that may reach NWS warning criteria. Most long fused NWS watches...warnings and advisories in effect are highlighted. Please refer to the latest NWS forecasts for weather not meeting NWS warning criteria. NYZ079>081-050445- Northeastern Suffolk-Southwestern Suffolk-Southeastern Suffolk- 1134 PM EST Wed Jan 3 2018 ...BLIZZARD WARNING IN EFFECT UNTIL 1 AM EST FRIDAY... ...COASTAL FLOOD ADVISORY IN EFFECT FROM 9 AM TO 2 PM EST THURSDAY... This Hazardous Weather Outlook is for southeast New York. .DAY ONE...Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Blizzard Warning. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Blizzard Warning. Coastal Flood Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. && This Hazardous Weather Outlook provides a summary of potential widespread hazardous weather events that may reach NWS warning criteria. Most long fused NWS watches...warnings and advisories in effect are highlighted. Please refer to the latest NWS forecasts for weather not meeting NWS warning criteria. NYZ078-050445- Northwestern Suffolk- 1134 PM EST Wed Jan 3 2018 ...BLIZZARD WARNING IN EFFECT UNTIL 1 AM EST FRIDAY... ...COASTAL FLOOD ADVISORY IN EFFECT FROM 11 AM TO 2 PM EST THURSDAY... This Hazardous Weather Outlook is for southeast New York. .DAY ONE...Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Blizzard Warning. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Blizzard Warning. Coastal Flood Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. && This Hazardous Weather Outlook provides a summary of potential widespread hazardous weather events that may reach NWS warning criteria. Most long fused NWS watches...warnings and advisories in effect are highlighted. Please refer to the latest NWS forecasts for weather not meeting NWS warning criteria. NYZ179-050445- Southern Nassau- 1134 PM EST Wed Jan 3 2018 ...WINTER STORM WARNING IN EFFECT UNTIL 1 AM EST FRIDAY... ...COASTAL FLOOD ADVISORY IN EFFECT FROM 9 AM TO 2 PM EST THURSDAY... This Hazardous Weather Outlook is for southeast New York. .DAY ONE...Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Storm Warning. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Storm Warning. Coastal Flood Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. && This Hazardous Weather Outlook provides a summary of potential widespread hazardous weather events that may reach NWS warning criteria. Most long fused NWS watches...warnings and advisories in effect are highlighted. Please refer to the latest NWS forecasts for weather not meeting NWS warning criteria. ANZ330-335-338-340-345-353-355-050445- Long Island Sound East of New Haven CT/Port Jefferson NY- Long Island Sound West of New Haven CT/Port Jefferson NY- New York Harbor-Peconic and Gardiners Bays- South Shore Bays from Jones Inlet through Shinnecock Bay- Fire Island Inlet NY to Moriches Inlet NY out 20 nm- Sandy Hook NJ to Fire Island Inlet NY out 20 nm- 1134 PM EST Wed Jan 3 2018 ...GALE WARNING IN EFFECT FROM 3 AM THURSDAY TO 6 PM EST FRIDAY... This Hazardous Weather Outlook is for Atlantic coastal waters. .DAY ONE...Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Gale Warning. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Gale Warning. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. && This Hazardous Weather Outlook provides a summary of potential widespread hazardous weather events that may reach NWS warning criteria. Most long fused NWS watches...warnings and advisories in effect are highlighted. Please refer to the latest NWS forecasts for weather not meeting NWS warning criteria. ANZ350-050445- Moriches Inlet NY to Montauk Point NY out 20 nm- 1134 PM EST Wed Jan 3 2018 ...GALE WARNING IN EFFECT FROM 3 AM TO 6 AM EST THURSDAY... ...STORM WARNING IN EFFECT FROM 6 AM TO 6 PM EST THURSDAY... This Hazardous Weather Outlook is for Atlantic coastal waters. .DAY ONE...Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Gale Warning. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Storm Warning. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. && This Hazardous Weather Outlook provides a summary of potential widespread hazardous weather events that may reach NWS warning criteria. Most long fused NWS watches...warnings and advisories in effect are highlighted. Please refer to the latest NWS forecasts for weather not meeting NWS warning criteria. NYZ072-073-075-176-050445- New York (Manhattan)-Bronx-Kings (Brooklyn)-Northern Queens- 1134 PM EST Wed Jan 3 2018 ...WINTER STORM WARNING IN EFFECT UNTIL 1 AM EST FRIDAY... This Hazardous Weather Outlook is for southeast New York. .DAY ONE...Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Storm Warning. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Storm Warning. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. && This Hazardous Weather Outlook provides a summary of potential widespread hazardous weather events that may reach NWS warning criteria. Most long fused NWS watches...warnings and advisories in effect are highlighted. Please refer to the latest NWS forecasts for weather not meeting NWS warning criteria. NYZ074-178-050445- Richmond (Staten Island)-Southern Queens- 1134 PM EST Wed Jan 3 2018 ...WINTER STORM WARNING IN EFFECT UNTIL 1 AM EST FRIDAY... ...COASTAL FLOOD ADVISORY IN EFFECT FROM 9 AM TO NOON EST THURSDAY... This Hazardous Weather Outlook is for southeast New York. .DAY ONE...Tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Storm Warning. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Winter Storm Warning. Coastal Flood Advisory. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. && This Hazardous Weather Outlook provides a summary of potential widespread hazardous weather events that may reach NWS warning criteria. Most long fused NWS watches...warnings and advisories in effect are highlighted. Please refer to the latest NWS forecasts for weather not meeting NWS warning criteria.
The national radar mosaic for the moment the first event began.
8 winter storm, 4 blizzard. Local standard time, as filed.
A trained spotter in Haddam reported 10.5 inches of snow. Social media reported 13 inches in Killingsworth. Near-blizzard conditions occurred across Southern Middlesex County, but the heaviest snow bands did not persist long enough to meet blizzard criteria.
CoCoRaHS observers, trained spotters, and the public reported 10 to 14 inches of snow. The Tweed-New Haven Airport ASOS (New Haven, CT) measured a 47 MPH wind gust at 12:02 PM. Near-blizzard conditions occurred across Southern New Haven County since the heaviest snow bands did not persist long enough to meet blizzard criteria.
A CoCoRaHS observed 1 NE of Westbrook reported 7.7 inches of snow. The public reported 10.5 inches in Clinton. Near-blizzard conditions occurred across Northern Middlesex County, but the heaviest snow bands did not persist long enough to meet blizzard criteria.
A COOP Observer in Norwich reported 12.2 inches of snow. CoCoRaHS observers reported 9 to 12 inches of snow. The nearby Groton-New London Airport ASOS (Groton, CT) measured a 58 MPH wind gust at 3:32 PM. Winds frequently gusted 40 to 50 MPH during the peak of the winter storm.
CoCoRaHS observers reported 8 to 10 inches of snow. The Groton-New London Airport ASOS (Groton, CT) measured a 58 MPH wind gust at 3:32 PM. Winds frequently gusted 40 to 50 MPH during the peak of the winter storm.
CoCoRaHS observers and trained spotters reported 8 to 12 inches of snow. A COOP observer in Success Hill reported 9 inches of snow. The Igor I. Sikorsky Memorial Airport ASOS (Bridgeport, CT) measured a 52 MPH wind gust at 3:23 PM. Winds frequently gusted 40 to 50 MPH during the peak of the event. A jackknifed tractor trailer shut down Interstate 95 southbound in Darien, Connecitcut.
Trained spotters, Fire Department/Rescue, and CoCoRaHS observers reported 10 to 15 inches of snow. The Meriden Airport ASOS (Meriden, CT) measured a 44 MPH wind gust at 6:22 PM. Near-blizzard conditions occurred across Northern New Haven County since the heaviest snow bands did not persist long enough to meet blizzard criteria.
CoCoRaHS observers and trained spotters reported 8 to 13 inches of snow. The Danbury Municipal Airport ASOS (Danbury, CT) measured a 40 MPH wind gust at 3:23 PM. Winds frequently gusted 30 to 40 MPH during the peak of the event.
The Groton-New London Airport ASOS (Groton, CT) observations showed blizzard conditions, with visibility less than one quarter mile in heavy snow and frequent wind gusts over 35 mph during the morning and early afternoon on January 4th.
The nearby Groton-New London Airport ASOS (Groton, CT) observations showed blizzard conditions, with visibility less than one quarter mile in heavy snow and frequent wind gusts over 35 mph during the morning and early afternoon on January 4th.
The Igor I. Sikorsky Memorial Airport ASOS (Bridgeport, CT) observations showed blizzard conditions, with visibility less than one quarter mile in heavy snow and frequent wind gusts over 35 mph during the morning on January 4th.
The Danbury Municipal Airport ASOS (Danbury, CT) observations showed blizzard conditions, with visibility less than one quarter mile in heavy snow and frequent wind gusts over 35 mph during the morning and early afternoon on January 4th.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Connecticut in 2018Every state in 2018This day in weather historyWarnings in Connecticut, January 2018
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 736975, 736972, 736974, 736976, 736977, 736965, 736973, 736967, 736978, 736979, 736966, 736968.