Alert archive / New York / Flash Flood Warnings in 2023
Flash Flood Warning 64, NWS New York, NY
NWS New York, NY issued this flash flood warning at Dec 18, 2023, 7:23 AM EST for Greater Bridgeport Planning Region, Connecticut; Putnam County, Rockland County, Westchester County, New York. It was in force for 3 hr. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Dec 18, 2023, 7:23 AM EST (12:23 UTC)
- Expired
- Dec 18, 2023, 10:30 AM EST
- In force
- 3 hr
- Issued by
- NWS New York, NY
- Area
- Storm-based polygon
- Flood severity
- None
Counties Greater Bridgeport Planning Region, CT, Putnam County, NY, Rockland County, NY, Westchester County, NY
The radar
The Brookhaven radar (KOKX), 90 km from the middle of the area, began a volume at 12:27 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Dec 18, 7:26 AM EST | FLASH FLOOD | 1 Nw Cold Spring, NY | Flooding on NY 9D both directions near Fair Street. All lanes closed. |
| Dec 18, 8:19 AM EST | FLASH FLOOD | 4 W Mount Kisco, NY | Flooding and ramp closure on Taconic State Parkway southbound ramp to Exit 11 NY 134. All lanes blocked. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Verified. The Iowa Environmental Mesonet's Cow matched 2 storm reports to this flash flood warning; the first came 3 minutes after it went out.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 0.4 hours before the alert went out and 90 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 455 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 963 m²/s²
- 0-3 km storm-relative helicity
- 1042 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
005
WGUS51 KOKX 181223
FFWOKX
CTC001-NYC079-087-119-181530-
/O.NEW.KOKX.FF.W.0064.231218T1223Z-231218T1530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New York NY
723 AM EST Mon Dec 18 2023
The National Weather Service in Upton has issued a
* Flash Flood Warning for...
Central Fairfield County in southern Connecticut...
Putnam County in southeastern New York...
Rockland County in southeastern New York...
Westchester County in southeastern New York...
* Until 1030 AM EST.
* At 723 AM EST, Doppler radar indicated heavy rain in Danbury Area.
Between 1 and 2.5 inches of rain have fallen. The expected
rainfall rate is 0.5 to 1 inch in 1 hour. Additional rainfall
amounts of 1 to 2 inches are possible in the warned area. Flash
flooding is already occurring.
HAZARD...Flash flooding caused by heavy rain.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Bridgeport, Stamford, Danbury, Ossining, Peekskill, Southbury, New
Canaan, Haverstraw, Tarrytown, Mount Kisco, Mahopac, Lake Carmel,
Nyack, Sherman, Brewster, Cold Spring, Newtown, Fairfield,
Greenwich and Trumbull.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4103 7398 4104 7399 4132 7398 4135 7396
4139 7395 4144 7398 4149 7393 4153 7353
4167 7352 4165 7349 4149 7344 4151 7339
4149 7337 4147 7330 4122 7321
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...0.5-1 INCH IN 1 HOUR
$$
DBR2 follow-up statements
474
WGUS71 KOKX 181451
FFSOKX
Flash Flood Statement
National Weather Service New York NY
951 AM EST Mon Dec 18 2023
NYC079-087-119-181501-
/O.CAN.KOKX.FF.W.0064.000000T0000Z-231218T1530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Putnam NY-Rockland NY-Westchester NY-
951 AM EST Mon Dec 18 2023
...FLASH FLOOD WARNING IS CANCELLED FOR PUTNAM, ROCKLAND AND
WESTCHESTER COUNTIES...
Flooding is no longer expected to pose a threat. Please continue to
heed remaining road closures.
A Flood Watch remains in effect until 500 PM EST Monday for portions
of southern Connecticut, northeast New Jersey, and southeast New
York.
LAT...LON 4115 7351 4120 7351 4121 7348 4125 7351
4153 7353 4149 7344 4151 7339 4150 7338
4149 7337 4147 7333 4147 7330 4145 7330
4145 7329 4122 7321
$$
CTC001-181530-
/O.CON.KOKX.FF.W.0064.000000T0000Z-231218T1530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fairfield CT-
951 AM EST Mon Dec 18 2023
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 AM EST THIS
MORNING FOR CENTRAL FAIRFIELD COUNTY...
At 951 AM EST, Doppler radar indicated heavy rain in Danbury Area.
Between 2 and 3 inches of rain have fallen. The expected rainfall
rate is 0.5 to 1 inch in 1 hour. Additional rainfall amounts of 1 to
2 inches are possible in the warned area. Flash flooding is already
occurring.
HAZARD...Flash flooding caused by heavy rain.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Bridgeport, Danbury, Southbury, New Canaan, Sherman, Newtown,
Fairfield, Trumbull, Westport, Ridgefield, Monroe, Bethel, Wilton,
Brookfield, New Fairfield, Weston, Redding, Georgetown and Easton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be aware of your surroundings and do not drive on flooded roads.
Excessive runoff from heavy rainfall will cause flooding of urban
areas, highways, streets and underpasses as well as other drainage
areas and low lying spots.
&&
LAT...LON 4115 7351 4120 7351 4121 7348 4125 7351
4153 7353 4149 7344 4151 7339 4150 7338
4149 7337 4147 7333 4147 7330 4145 7330
4145 7329 4122 7321
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...0.5-1 INCH IN 1 HOUR
$$
DBR644
WGUS71 KOKX 181526
FFSOKX
Flash Flood Statement
National Weather Service New York NY
1026 AM EST Mon Dec 18 2023
CTC001-181536-
/O.EXP.KOKX.FF.W.0064.000000T0000Z-231218T1530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Fairfield CT-
1026 AM EST Mon Dec 18 2023
...FLASH FLOOD WARNING WILL EXPIRE AT 1030 AM EST THIS MORNING FOR
CENTRAL FAIRFIELD COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
A Flood Watch remains in effect until 500 PM EST Monday for portions
of southern Connecticut, northeast New Jersey, and southeast New
York.
LAT...LON 4115 7351 4120 7351 4121 7348 4125 7351
4153 7353 4149 7344 4151 7339 4150 7338
4149 7337 4147 7333 4147 7330 4145 7330
4145 7329 4122 7321
$$
DBRWhat forecasters said that day
The local office's own words before this flash flood warning went out, 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 this flash flood warning went out at Dec 18, 6:51 AM EST, 32 minutes earlier.
Area forecast discussion, Dec 18, 6:51 AM EST, 32 minutes before
Area Forecast Discussion
National Weather Service New York NY
651 AM EST Mon Dec 18 2023
.SYNOPSIS...
Strong low pressure passes through the area today. The low then
tracks north into southeastern Canada tonight with high pressure
slowly building in during Tuesday. High pressure will then remain in
control through the upcoming weekend.
&&
.NEAR TERM /UNTIL 6 PM THIS EVENING/...
No major changes to the forecast with this update.
Low level jet near 2000 feet has peaked at around 85kt on KOKX
radar in the past couple of hours, and as of 6AM is still at
around 75kt. There have been reports of downed trees and gusts
58+mph in some of the warned area so far. No changes have been
made to the High Wind Warning or Wind Advisory with this update.
With surface temperatures near 60, rapid pressure falls helping
downward momentum transfer, and occasional heavy downpours
(some potentially with thunder), still a chance that areas under
the high wind warning continue to see gusts around 60 mph. The
threat for advisory and warning- level winds may very well end
by mid-morning in most spots, but will leave the end time of the
wind headlines at noon for the time being as convection in
association with a strengthening low pressure center to our
south passes over or nearby the coastal areas after the
strongest winds aloft have already shifted east. Gusts otherwise
will be in the range of 25-40mph this afternoon.
Flood Watch remains posted for most of the area. Additional
rivers are expected to see at least minor flooding later this
morning, especially over NE NJ and the Lower Hudson Valley where
the rain has been the heaviest so far, and with upsloping on a
SE wind, will see the most rainfall for the entire event. See
the hydrology section for more details.
Mild with high temperatures in the upper 50s to lower 60s, and
a chance that some records are broken. See the climate section
below for more details.
&&
.SHORT TERM /6 PM THIS EVENING THROUGH TUESDAY NIGHT/...
The low will be north of the area tonight with a brief break in
precipitation. Wrap around moisture in the back side of the storm
with the approach of a closed mid-level will bring a chance of
rain/snow showers well NW of the city late tonight into Tuesday
morning. There may even be slight coating of snow in the higher
terrain of Western Orange County. Dry for Tuesday night with the
flow aloft becoming anticyclonic and surface high pressure building
in.
&&
.LONG TERM /WEDNESDAY THROUGH SUNDAY/...
Upper level low over the eastern Great Lakes region will weaken
into a trough as it moves toward the forecast area. A weak area
of low pressure looks to form along the frontal boundary
offshore, and a blocking pattern will then set up as the trough
becomes an upper level low once again and will interact with the
weak surface low offshore, becoming vertically stacked by the
middle of the week. With a blocked pattern over the region, the
surface high that builds in during Tuesday night will remain over
the area through next weekend. This will sustain a period of dry
weather Wednesday through Sunday.
The area will be on the eastern side of the high during much of the
week, with a northwest to northerly flow for much time. This will
lead to seasonable temperatures with highs in the 40s.
&&
.AVIATION /12Z MONDAY THROUGH FRIDAY/...
HIGH IMPACT AVIATION EVENT TODAY...
Strong low pressure approaches tracks near the region this
morning and then lifts to the north and east, dragging a cold
front through this afternoon.
Widespread IFR/LIFR conditions this morning with improvement behind
the departing surface low and cold front in the afternoon.
Conditions are forecast to improve to MVFR in the afternoon,
becoming VFR by late afternoon for all but KGON, which should
follow by early evening. Cigs on Tuesday may occasionally go
MVFR.
Peak S/SE winds occurring now thru mid morning or so, 20-30kt
G30-50kt, with strongest along the coast. Slow improvement late
morning through the afternoon, with winds veering to S/SW, then
W/NW around 20kt G30-35kt in the afternoon into early evening.
Winds will then gradually diminish and back to the SW G20-25kt
Monday evening. Gusts 20 to 25 kt linger through Tuesday.
NY Metro (KEWR/KLGA/KJFK/KTEB) TAF Uncertainty...
Isolated 45 to 50 kt gusts thru 15Z this morning, especially at
KJFK and KLGA.
Gusts after 13Z could be more occasional than frequent until low
passes to the east in the early afternoon.
Timing of flight categories could vary by 1-2 hours.
OUTLOOK FOR 12Z TUESDAY THROUGH FRIDAY...
Tuesday: Mainly VFR, brief MVFR cigs possible. WNW G20-25kt in
the afternoon.
Wednesday through Friday: VFR.
Detailed information, including hourly TAF wind component forecasts,
can be found at: https:/www.weather.gov/zny/n90
&&
.MARINE...
Storm Warning remains in effect through this morning on all waters.
Gales will then prevail this afternoon on the ocean and perhaps over
the eastern bays and eastern LI Sound. Otherwise, solid SCA
conditions this afternoon for the rest of the waters. Ocean seas are
expected to range roughly up to 16-21ft during the day today.
All waters will probably be experiencing SCA conds by midnight
tonight, then as winds continue to subside, conditions should be
below advisory thresholds by the end of tonight on the non-ocean
waters. Seas remain elevated on the ocean through at least the end
of the week as long period swells from an offshore storm keep waves
elevated.
&&
.HYDROLOGY...
Mostly 2 to 4 inches of rainfall with locally higher amounts
possible are expected by the end of today. Periods of heavy rain
should continue through mid-morning. The highest amounts are
expected in portions of northeastern New Jersey, into the Lower
Hudson Valley, and possibly into portions of Southwestern
Connecticut (Fairfield County). With flooding of fast responding
streams possibly reaching moderate flooding benchmarks, and flooding
of poor drainage and urban areas, and localized to scattered flash
flooding becoming more likely, the Flood Watch remains in effect
tonight through this afternoon. A few of the faster responding
streams of northeastern New Jersey may even reach major flooding
benchmarks. Residual river flooding will then continue tonight as
levels subside. Afterwards, no hydrologic impacts expected through
next weekend.
&&
.TIDES/COASTAL FLOODING...
Coastal flood warnings continue for southern Queens, southern
and eastern portions of LI and coastal CT, and expanded for NE
NJ as widespread moderate coastal flooding is likely with the
daytime high tide cycle today. This includes the tidally affected
rivers, particularly Hudson and Hackensack rivers, where the surge
is favored to be forced upstream by the strong southerly flow. There
is potential for locally major flood thresholds to be reached for
southern Queens, SW LI and twin forks, if windshift occurs near or
after the time of high tide.
Elsewhere, minor to locally moderate coastal flood potential exists
for NE LI and northern portions of NYC.
Peak surge of 3 1/2 to 5 ft will likely be between high tidal cycles
this morning. A later timing of windshift closer to today's early
afternoon time of high tide will aid potential for major flood
thresholds to be reached or exceeded for the most vulnerable
southern Queens, SW and E LI portions of the area. This will likely
not be evident until the time of high tide is approaching. Forecast
is a blend of 75th percentile of PETSS, Stevens, and deterministic
ESTOFS.
Heavy rainfall and/or runoff coinciding with this afternoon's high
tides will exacerbate street and property flooding issues along the
coast and tidally affected rivers.
Along the ocean beachfront, potential exists for 12-16 ft breakers
today (8-12ft for NYC beachfront), which combined with elevated
water levels, will likely result in widespread dune erosion and
scattered overwashes.
&&
.CLIMATE...
Record high temperatures for December 18th...
EWR...64/1937
BDR...61/1937
NYC...63/1964
LGA...63/2006
JFK...64/1984
ISP...59/1984
&&
.OKX WATCHES/WARNINGS/ADVISORIES...
CT...Flood Watch until 5 PM EST this afternoon for CTZ005>007-
009>011.
Wind Advisory until noon EST today for CTZ005>007.
High Wind Warning until noon EST today for CTZ008>012.
Coastal Flood Warning until 6 PM EST this evening for
CTZ009>012.
NY...Flood Watch until 5 PM EST this afternoon for NYZ067>075-176-
178.
Wind Advisory until noon EST today for NYZ070>074.
High Wind Warning until noon EST today for NYZ075-078>081-
176>179.
Coastal Flood Warning until 6 PM EST this evening for NYZ071-
079>081-178-179.
Coastal Flood Warning from 10 AM this morning to 4 PM EST this
afternoon for NYZ074-075.
Coastal Flood Advisory until 6 PM EST this evening for NYZ072-
073-078-176-177.
NJ...Flood Watch until 5 PM EST this afternoon for NJZ002-004-006-
103>108.
Wind Advisory until noon EST today for NJZ006-104-106-108.
Coastal Flood Warning from 10 AM this morning to 4 PM EST this
afternoon for NJZ006-104-106-108.
MARINE...Storm Warning until 1 PM EST this afternoon for ANZ331-332-335-
338-340-345-350-353-355.
&&
SYNOPSIS...JC/JP
NEAR TERM...JC
SHORT TERM...JC
LONG TERM...JP
AVIATION...DR/DW
MARINE...JC/JP
HYDROLOGY...JC/JP
TIDES/COASTAL FLOODING...
CLIMATE...Hazardous weather outlook, Dec 18, 5:03 AM EST, 2 hours 20 minutes before
Hazardous Weather Outlook National Weather Service New York NY 503 AM EST Mon Dec 18 2023 NYZ176-191100- Northern Queens- 503 AM EST Mon Dec 18 2023 ...FLOOD WATCH REMAINS IN EFFECT THROUGH THIS AFTERNOON... ...HIGH WIND WARNING IN EFFECT UNTIL NOON EST TODAY... ...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 6 PM EST THIS EVENING... This Hazardous Weather Outlook is for southeast New York. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. Coastal Flood Advisory. High Wind Warning. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hazardous weather is not expected at this time that would meet NWS warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation will likely be needed. && 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. NYZ178-191100- Southern Queens- 503 AM EST Mon Dec 18 2023 ...FLOOD WATCH REMAINS IN EFFECT THROUGH THIS AFTERNOON... ...COASTAL FLOOD WARNING IN EFFECT UNTIL 6 PM EST THIS EVENING... ...HIGH WIND WARNING IN EFFECT UNTIL NOON EST TODAY... This Hazardous Weather Outlook is for southeast New York. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. Coastal Flood Warning. High Wind Warning. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hazardous weather is not expected at this time that would meet NWS warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation will likely be needed. && 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. CTZ007-191100- Northern Middlesex- 503 AM EST Mon Dec 18 2023 ...FLOOD WATCH REMAINS IN EFFECT THROUGH THIS AFTERNOON... ...WIND ADVISORY IN EFFECT UNTIL NOON EST TODAY... This Hazardous Weather Outlook is for southern Connecticut. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. Wind Advisory. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hazardous weather is not expected at this time that would meet NWS warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation will likely be needed. && 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. CTZ008-191100- Northern New London- 503 AM EST Mon Dec 18 2023 ...HIGH WIND WARNING IN EFFECT UNTIL NOON EST TODAY... This Hazardous Weather Outlook is for southern Connecticut. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. High Wind Warning. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hazardous weather is not expected at this time that would meet NWS warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation will likely be needed. && 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. CTZ012-NYZ079-081-191100- Southern New London-Northeast Suffolk-Southeast Suffolk- 503 AM EST Mon Dec 18 2023 ...COASTAL FLOOD WARNING IN EFFECT UNTIL 6 PM EST THIS EVENING... ...HIGH WIND WARNING IN EFFECT UNTIL NOON EST TODAY... This Hazardous Weather Outlook is for southern Connecticut and southeast New York. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Coastal Flood Warning. High Wind Warning. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. No hazardous weather is expected at this time that would meet NWS warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. && 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. NYZ078-177-191100- Northwest Suffolk-Northern Nassau- 503 AM EST Mon Dec 18 2023 ...HIGH WIND WARNING IN EFFECT UNTIL NOON EST TODAY... ...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 6 PM EST THIS EVENING... This Hazardous Weather Outlook is for southeast New York. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Coastal Flood Advisory. High Wind Warning. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hazardous weather is not expected at this time that would meet NWS warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation will likely be needed. && 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. CTZ011-191100- Southern Middlesex- 503 AM EST Mon Dec 18 2023 ...FLOOD WATCH REMAINS IN EFFECT THROUGH THIS AFTERNOON... ...COASTAL FLOOD WARNING IN EFFECT UNTIL 6 PM EST THIS EVENING... ...HIGH WIND WARNING IN EFFECT UNTIL NOON EST TODAY... This Hazardous Weather Outlook is for southern Connecticut. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. Coastal Flood Warning. High Wind Warning. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hazardous weather is not expected at this time that would meet NWS warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation will likely be needed. && 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. NYZ080-179-191100- Southwest Suffolk-Southern Nassau- 503 AM EST Mon Dec 18 2023 ...COASTAL FLOOD WARNING IN EFFECT UNTIL 6 PM EST THIS EVENING... ...HIGH WIND WARNING IN EFFECT UNTIL NOON EST TODAY... This Hazardous Weather Outlook is for southeast New York. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Coastal Flood Warning. High Wind Warning. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hazardous weather is not expected at this time that would meet NWS warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation will likely be needed. && 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. NJZ006-104-106-108-NYZ074-191100- Hudson-Eastern Bergen-Eastern Essex-Eastern Union- Richmond (Staten Island)- 503 AM EST Mon Dec 18 2023 ...FLOOD WATCH REMAINS IN EFFECT THROUGH THIS AFTERNOON... ...WIND ADVISORY IN EFFECT UNTIL NOON EST TODAY... ...COASTAL FLOOD WARNING IN EFFECT FROM 10 AM THIS MORNING TO 4 PM EST THIS AFTERNOON... This Hazardous Weather Outlook is for northeast New Jersey and southeast New York. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. Wind Advisory. Coastal Flood Warning. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hazardous weather is not expected at this time that would meet NWS warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation will likely be needed. && 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. CTZ009-010-191100- Southern Fairfield-Southern New Haven- 503 AM EST Mon Dec 18 2023 ...FLOOD WATCH REMAINS IN EFFECT THROUGH THIS AFTERNOON... ...COASTAL FLOOD WARNING IN EFFECT UNTIL 6 PM EST THIS EVENING... ...HIGH WIND WARNING IN EFFECT UNTIL NOON EST TODAY... This Hazardous Weather Outlook is for southern Connecticut. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. Coastal Flood Warning. High Wind Warning. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hazardous weather is not expected at this time that would meet NWS warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation will likely be needed. && 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. NYZ071-191100- Southern Westchester- 503 AM EST Mon Dec 18 2023 ...FLOOD WATCH REMAINS IN EFFECT THROUGH THIS AFTERNOON... ...COASTAL FLOOD WARNING IN EFFECT UNTIL 6 PM EST THIS EVENING... ...WIND ADVISORY IN EFFECT UNTIL NOON EST TODAY... This Hazardous Weather Outlook is for southeast New York. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. Coastal Flood Warning. Wind Advisory. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hazardous weather is not expected at this time that would meet NWS warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation will likely be needed. && 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. NYZ072-073-191100- New York (Manhattan)-Bronx- 503 AM EST Mon Dec 18 2023 ...FLOOD WATCH REMAINS IN EFFECT THROUGH THIS AFTERNOON... ...COASTAL FLOOD ADVISORY IN EFFECT UNTIL 6 PM EST THIS EVENING... ...WIND ADVISORY IN EFFECT UNTIL NOON EST TODAY... This Hazardous Weather Outlook is for southeast New York. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. Coastal Flood Advisory. Wind Advisory. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hazardous weather is not expected at this time that would meet NWS warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation will likely be needed. && 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. NYZ075-191100- Kings (Brooklyn)- 503 AM EST Mon Dec 18 2023 ...FLOOD WATCH REMAINS IN EFFECT THROUGH THIS AFTERNOON... ...HIGH WIND WARNING IN EFFECT UNTIL NOON EST TODAY... ...COASTAL FLOOD WARNING IN EFFECT FROM 10 AM THIS MORNING TO 4 PM EST THIS AFTERNOON... This Hazardous Weather Outlook is for southeast New York. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. High Wind Warning. Coastal Flood Warning. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hazardous weather is not expected at this time that would meet NWS warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation will likely be needed. && 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. NJZ002-004-103-105-107-NYZ067>069-191100- Western Passaic-Eastern Passaic-Western Bergen-Western Essex- Western Union-Orange-Putnam-Rockland- 503 AM EST Mon Dec 18 2023 ...FLOOD WATCH REMAINS IN EFFECT THROUGH THIS AFTERNOON... This Hazardous Weather Outlook is for northeast New Jersey and southeast New York. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hazardous weather is not expected at this time that would meet NWS warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation will likely be needed. && 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. CTZ005-006-NYZ070-191100- Northern Fairfield-Northern New Haven-Northern Westchester- 503 AM EST Mon Dec 18 2023 ...FLOOD WATCH REMAINS IN EFFECT THROUGH THIS AFTERNOON... ...WIND ADVISORY IN EFFECT UNTIL NOON EST TODAY... This Hazardous Weather Outlook is for southern Connecticut and southeast New York. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Flood Watch. Wind Advisory. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. No hazardous weather is expected at this time that would meet NWS warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. && 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. ANZ331-332-335-338-340-345-350-353-355-191100- Long Island Sound East of New Haven CT/Port Jefferson NY to the Mouth of the Connecticut River- Long Island Sound East of the Mouth of the Connecticut River- 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- Moriches Inlet NY to Montauk Point NY out 20 nm- Fire Island Inlet NY to Moriches Inlet NY out 20 nm- Sandy Hook NJ to Fire Island Inlet NY out 20 nm- 503 AM EST Mon Dec 18 2023 ...STORM WARNING IN EFFECT UNTIL 1 PM EST THIS AFTERNOON... This Hazardous Weather Outlook is for Atlantic coastal waters. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Storm Warning. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Hazardous weather is not expected at this time that would meet NWS warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. && 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.
In the hours before
Local storm report, Dec 18, 6:24 AM EST, 59 minutes before
Preliminary Local Storm Report
National Weather Service New York NY
624 AM EST Mon Dec 18 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0455 AM Non-Tstm Wnd Gst 2 E Fairfield 41.13N 73.24W
12/18/2023 M60 MPH Fairfield CT Mesonet
Mesonet station GW0038 Fairfield.
&&Local storm report, Dec 18, 6:26 AM EST, 57 minutes before
Preliminary Local Storm Report
National Weather Service New York NY
626 AM EST Mon Dec 18 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0455 AM Non-Tstm Wnd Gst 2 SSW Eatons Neck 40.93N 73.40W
12/18/2023 M60 MPH ANZ335 NY Mesonet
Mesonet station DVI08956 Northport.
&&Local storm report, Dec 18, 6:28 AM EST, 55 minutes before
Preliminary Local Storm Report
National Weather Service New York NY
628 AM EST Mon Dec 18 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0500 AM Non-Tstm Wnd Gst 2 SW Groton Airport 41.31N 72.08W
12/18/2023 M59 MPH ANZ332 CT Mesonet
Mesonet station LDLC3 2 S Groton.
&&Local storm report, Dec 18, 6:29 AM EST, 54 minutes before
Preliminary Local Storm Report
National Weather Service New York NY
629 AM EST Mon Dec 18 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0455 AM Non-Tstm Wnd Gst 1 SSW Rye 40.96N 73.69W
12/18/2023 M58 MPH Westchester NY Mesonet
Mesonet station VWB01 Disbrow Park.
&&Local storm report, Dec 18, 6:50 AM EST, 33 minutes before
Preliminary Local Storm Report
National Weather Service New York NY
650 AM EST Mon Dec 18 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0630 AM Flood 1 SSE Danbury 41.39N 73.46W
12/18/2023 Fairfield CT Emergency Mngr
Water rescue due to areal flooding on West
Street and Benedict Avenue.
&&Local storm report, Dec 18, 6:54 AM EST, 29 minutes before
Preliminary Local Storm Report
National Weather Service New York NY
654 AM EST Mon Dec 18 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0630 AM Flood 2 WSW Danbury 41.39N 73.52W
12/18/2023 Fairfield CT Emergency Mngr
Water rescue due to areal flooding on Mill
Plain Road.
&&The office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 18, 2:45 AM EST | Areal Flood Advisory | OKX | Greater Bridgeport Planning Region | 5 hr |
| Dec 18, 3:16 AM EST | Areal Flood Advisory | OKX | Greater Bridgeport Planning Region, Naugatuck Valley Planning Region | 5 hr |
| Dec 18, 6:11 AM EST | Areal Flood Warning | OKX | Greater Bridgeport Planning Region, Naugatuck Valley Planning Region | 3 hr |
| Dec 18, 7:23 AM EST | Areal Flood Advisory | OKX | Greater Bridgeport Planning Region | 112 min |
| Dec 18, 7:45 AM EST | Flash Flood Warning | OKX | Greater Bridgeport Planning Region | 3 hr |
| Dec 18, 8:27 AM EST | Areal Flood Advisory | OKX | Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region | 3 hr |
| Dec 18, 8:41 AM EST | Flash Flood Warning | OKX | Greater Bridgeport Planning Region, Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region | 3 hr |
| Dec 18, 9:45 AM EST | River Flood Warning | OKX | Southeastern Connecticut Planning Region | 18 hr |
| Dec 18, 4:23 PM EST | Areal Flood Advisory | OKX | Naugatuck Valley Planning Region | 10 hr |
| Dec 18, 4:40 PM EST | Areal Flood Advisory | OKX | Naugatuck Valley Planning Region | 5 hr |
| Dec 18, 4:21 AM EST | Areal Flood Warning | OKX | Orange, Rockland, Westchester | 7 hr |
| Dec 18, 5:00 AM EST | River Flood Warning | OKX | Orange, Rockland | 44 hr |
| Dec 18, 6:57 AM EST | Areal Flood Advisory | OKX | Orange | 117 min |
| Dec 18, 7:06 AM EST | Flash Flood Warning | OKX | Orange, Putnam, Rockland | 3 hr |
| Dec 18, 7:29 AM EST | Areal Flood Advisory | OKX | Nassau, Suffolk | 3 hr |
| Dec 18, 9:21 AM EST | Gale Warning | OKX | 12 hr | |
| Dec 18, 10:11 AM EST | Areal Flood Warning | OKX | Rockland | 4 hr |
| Dec 18, 10:36 AM EST | Small Craft Advisory | OKX | 3 hr | |
| Dec 18, 11:49 AM EST | Areal Flood Advisory | OKX | Bronx, Westchester | 2 hr |
| Dec 18, 2:15 PM EST | Areal Flood Advisory | OKX | Bronx, Rockland, Westchester | 2 hr |
| Dec 18, 4:06 PM EST | Areal Flood Warning | OKX | Rockland | 14 hr |
| Dec 18, 4:16 PM EST | Areal Flood Advisory | OKX | Bronx, Westchester | 4 hr |
| Dec 18, 4:58 PM EST | Areal Flood Advisory | OKX | Rockland | 8 hr |
| Dec 18, 5:59 PM EST | Small Craft Advisory | OKX | 36 hr |
Nearby
Flash Flood Warnings in New York, 2023Flash Flood Warnings in Connecticut, 2023Every flash flood warning in 2023
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.