Alert archive / Connecticut / Flash Flood Warnings in 2023
Flash Flood Warning 30, NWS New York, NY
NWS New York, NY issued this flash flood warning at Jul 16, 2023, 9:43 AM EDT for Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region, Connecticut. It was in force for 3 hr. 1 report 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
- Jul 16, 2023, 9:43 AM EDT (13:43 UTC)
- Expired
- Jul 16, 2023, 12:45 PM EDT
- In force
- 3 hr
- Issued by
- NWS New York, NY
- Area
- Storm-based polygon
- Flood severity
- None
Counties Lower Connecticut River Valley Planning Region, CT, Naugatuck Valley Planning Region, CT, Southeastern Connecticut Planning Region, CT
The radar
The Brookhaven radar (KOKX), 69 km from the middle of the area, began a volume at 13:44 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 |
|---|---|---|---|
| Jul 16, 10:50 AM EDT | FLASH FLOOD | New Haven, CT | Flooding taking place in neighborhoods on the southside of New Haven with high standing water with some impassable roads. |
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 one storm report to this flash flood warning; the first came 67 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, 1.7 hours before the alert went out and 69 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
- 236 J/kg
- Mixed-layer CIN
- -31 J/kg
- Mixed-layer LCL
- 766 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 193 m²/s²
- 0-3 km storm-relative helicity
- 223 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 6.0
The text
As transmitted.
567
WGUS51 KOKX 161343
FFWOKX
CTC007-009-011-161645-
/O.NEW.KOKX.FF.W.0030.230716T1343Z-230716T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New York NY
943 AM EDT Sun Jul 16 2023
The National Weather Service in Upton has issued a
* Flash Flood Warning for...
Middlesex County in southern Connecticut...
Central New Haven County in southern Connecticut...
Western New London County in southern Connecticut...
* Until 1245 PM EDT.
* At 943 AM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Up to 0.5 inches of rain have
fallen. The expected rainfall rate is 1.5 to 2.5 inches in 1 hour.
Additional rainfall amounts of 2 to 4 inches are possible in the
warned area through midday. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
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...
New Haven, Meriden, Milford, Middletown, Wallingford, Guilford,
Colchester, Clinton, East Hampton, Old Saybrook, Durham, Salem,
Chester, Hamden, Stratford, Cheshire, Branford, North Haven, North
Branford and Cromwell.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
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.
Please report observed flooding to local emergency services or law
enforcement and request they pass this information to the National
Weather Service when you can do so safely.
&&
LAT...LON 4117 7312 4127 7302 4156 7294 4155 7285
4157 7285 4158 7275 4163 7271 4164 7263
4163 7263 4165 7251 4158 7247 4159 7239
4161 7233 4164 7233 4170 7226 4126 7231
4123 7276 4125 7291 4119 7301
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL RATE...1.5-2.5 INCHES IN 1 HOUR
$$
NV1 follow-up statement
019
WGUS71 KOKX 161641
FFSOKX
Flash Flood Statement
National Weather Service New York NY
1241 PM EDT Sun Jul 16 2023
CTC007-009-011-161651-
/O.EXP.KOKX.FF.W.0030.000000T0000Z-230716T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Middlesex CT-New Haven CT-New London CT-
1241 PM EDT Sun Jul 16 2023
...FLASH FLOOD WARNING WILL EXPIRE AT 1245 PM EDT THIS AFTERNOON FOR
MIDDLESEX, CENTRAL NEW HAVEN AND WESTERN NEW LONDON COUNTIES...
The heavy rain has ended. Flash Flooding is no longer expected to
pose a threat. Please continue to heed remaining road closures.
Additional rounds of heavy rain are possible later this afternoon.
A Flood Watch remains in effect until 1200 AM EDT Monday for
portions of southern Connecticut, northeast New Jersey and southeast
New York.
LAT...LON 4117 7312 4127 7302 4156 7294 4155 7285
4157 7285 4158 7275 4163 7271 4164 7263
4163 7263 4165 7251 4158 7247 4159 7239
4161 7233 4164 7233 4170 7226 4126 7231
4123 7276 4125 7291 4119 7301
$$
NVWhat 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 Jul 16, 7:49 AM EDT, 1 hour 54 minutes earlier.
Area forecast discussion, Jul 16, 7:49 AM EDT, 1 hour 54 minutes before
Area Forecast Discussion
National Weather Service New York NY
749 AM EDT Sun Jul 16 2023
.SYNOPSIS...
A frontal system will become nearly stationary across the area today
before moving east tonight. High pressure will then briefly build
across the area on Monday. Unsettled weather is likely to continue
through the rest of the week with the potential for a series of
frontal boundaries.
&&
.NEAR TERM /UNTIL 6 PM THIS EVENING/...
Flood Watch remains up for the entire forecast area late through
midnight.
Bands of heavy rain with embedded thunder have moved into the
western half of the CWA and are expected to shift eastward
through the day.
Overall, the forecast remains on track with the potential for a
significant flood event (possibly major) through the day today as a
frontal system works into the area ahead of another shortwave being
sent east out of the longwave trough. All the players are there with
record PWAT values of 2.25-2.50 inches, moderate-high instability,
and a slow-moving or at times stalled out boundary across the area.
The 00z suite of forecast guidance has started to bring some of the
smaller details into focus, but as always there still remains some
uncertainty. The biggest forecast challenge for this event is to
pinpoint where the heaviest axis of rain will set up across the
forecast area. Latest guidance appears to show a narrow SW to NE
corridor of about 50 miles wide (somewhere from about western
Passaic NJ through NYC to the Nassau/Suffolk Border), where the
heaviest rain is expected to set up. This corridor is likely to
extend from NE NJ/NYC up into portions of southwestern CT. Most of
the global models and CAMS have some heavy swath of rain somewhere
in this corridor. As a result, have nudged the heavy rain axis east
and bumped rainfall totals up in this area. CAMs also showing this
area will be prone to training of thunderstorms. On average, we are
looking a widespread 1 to 3 inch rainfall with localized amounts 4
to 6 inches. At this time, its hard to rule out the potential for a
few isolated spots receiving 7+ inches. Rainfall rates of 1 to
2 inches per hour remain likely. Confidence continues to
increase for someone in the CWA to see localized significant
flooding.
WPC maintains the moderate risk of Excessive rainfall across much of
the forecast area, however the area that extends from NYC/NE NJ
through CT remains on the higher end of the moderate risk.
In addition to the flooding threat, the Storm Prediction Center
has placed much of the area in a slight risk of severe weather
today. The main threat will be isolated tornadoes and strong
gusty winds.
Clouds and rainfall today should result in a cooler day, with highs
around 80.
&&
.SHORT TERM /6 PM THIS EVENING THROUGH 6 AM MONDAY/...
Lingering convection in the evening is forecast to work east of
the area during the early morning hours. The cold front is
expected to clear eastern LI/SE CT toward daybreak. Lows are
forecast to be a few cooler, ranging from the upper 60s inland,
to the lower 70s along the coast.
&&
.LONG TERM /MONDAY THROUGH SATURDAY/...
No significant changes have been made to the long term and have
followed the NBM closely for this update.
A persistent longwave upper trough will remain in place over
eastern North American through the time frame, with a series of
shortwave impulses riding through every other day or so this
week with chances for showers/tstms. On Mon we will be in
between impulses and the day should be very warm and somewhat
humid, with highs mostly from the upper 80s to lower 90s, and
afternoon dewpoints from the mid 60s NYC north/west to the lower
70s across Long Island and SE CT. The next chance for organized
convection arrives as the longwave trough axis swings through,
with a marginal risk of excessive rainfall fcst for the Hudson
Valley. Slightly cooler high temps (85-90) and slightly higher
dewpoints (upper 60s/lower 70s) on Tue should yield similar heat
index values to those of Monday.
Max heat index values for the two days should be mostly below 95,
with the possible exception of the urban corridor of NE NJ and some
spots along the north shore of Long Island, with only E Union County
meeting local heat advy criteria of two consecutive days of 95+ heat
index.
Some haze may also be possible Mon night into Tue, per extrapolation
of latest HRRR guidance suggesting some smoke from western Canada
wildfires crossing the Appalachians during that time.
Wed looks like a mostly dry day with shortwave ridging briefly
moving across, then the next organized chance of showers/tstms
should arrive Thu-Fri as the longwave upper trough becomes re-
established. Forecast per NBM currently shows dry conditions for Sat
but confidence in this is low especially east of NYC with
deterministic global models showing a wave of low pressure moving
NNE through the adjacent Atlantic waters.
&&
.AVIATION /12Z SUNDAY THROUGH THURSDAY/...
A frontal boundary will remain in the vicinity of the terminals
this morning. A cold front approaches this afternoon and moves
through the area tonight. Weak high pressure briefly builds in
late tonight.
Periods of showers and thunderstorms will continue across the
region through this afternoon, with periods of moderate to heavy
rainfall. There is some uncertainty with the timing and
placement of the heavier/stronger thunderstorms, some of which
could produce gusty winds. Conditions will be mainly IFR with
periods of MVFR possible. Thunderstorms and then showers end
mid to late afternoon into tonight west to east. Again, there
are timing uncertainties with the ending of thunderstorms and
then showers. Conditions improve to VFR by late tonight, except
at KGON where IFR likely remains until toward 12Z.
A southerly flow is expected through this afternoon with a
period of light and variable winds becoming NW by late evening
and into tonight.
...NY Metro (KEWR/KLGA/KJFK/KTEB) TAF Uncertainty...
High confidence in IFR cigs overnight into Sunday, with showers
and thunderstorms developing.
Uncertainty in end time of SHRA and TSRA on Sunday. There is a
chance for TSRA to linger after 21Z.
OUTLOOK FOR 12Z MONDAY THROUGH THURSDAY...
Monday: Early morning MVFR possible in cigs at KGON, otherwise
VFR.
Tuesday: MVFR or lower in chance of showers and thunderstorms.
Wednesday: VFR.
Wednesday Night - Thursday: MVFR or lower in chance of showers
and thunderstorms.
Detailed information, including hourly TAF wind component forecasts,
can be found at: https:/www.weather.gov/zny/n90
&&
.MARINE...
Ahead of an approaching frontal system, southerly winds will
strengthen to around 15 kt on the ocean waters by morning,
increasing seas around 5 ft. A SCA has remains in effect today and
tonight between Fire Island Inlet and Montauk Point.
Sea up to 5 ft may linger on the ocean waters daytime Mon per NWPS
and GFSwave, especially out east. Confidence in this is low as
sustained winds in the persistent S flow daytime Sunday peak only
briefly between 15-20 kt, and will be lighter out of the SW daytime
Mon, so SCA has not been extended into this time frame.
&&
.HYDROLOGY...
A Flood Watch is in effect for the entire CWA late tonight and
Sunday.
There is the potential for a significant to major flood event today
as a frontal boundary works across the area. All of the area except
eastern LI is under a Moderate Risk for Excessive Rainfall. The
potential is there for scattered to numerous flash floods. On
average, we are looking a widespread 1 to 3 inch rainfall with
localized amounts 4 to 6 inches. At this time, its hard to rule out
the potential for a few isolated spots receiving 7+ inches.
Rainfall rates of 1 to 2 inches per hour remain likely.
Confidence continues to increase for someone in the CWA to see
localized significant flooding.
A marginal risk of excessive rainfall is forecast for the Hudson
Valley for Tuesday, as another passing disturbance helps generate
showers/tstms with heavy rainfall. An ongoing risk may continue with
successive systems later this week.
&&
.TIDES/COASTAL FLOODING...
There is a high risk of rip current development at all the ocean
beaches today and Monday as southerly swells increase.
&&
.OKX WATCHES/WARNINGS/ADVISORIES...
CT...Flood Watch through this evening for CTZ005>012.
NY...Flood Watch through this evening for NYZ067>075-078>081-
176>179.
High Rip Current Risk through this evening for NYZ075-080-081-
178-179.
NJ...Flood Watch through this evening for NJZ002-004-006-103>108.
MARINE...Small Craft Advisory until 6 AM EDT Monday for ANZ350-353.
&&
SYNOPSIS...BC/BG
NEAR TERM...BC
SHORT TERM...DW
LONG TERM...BG/DBR
AVIATION...MET
MARINE...BC/BG
HYDROLOGY...BC/BG
TIDES/COASTAL FLOODING...Hazardous weather outlook, Jul 16, 8:25 AM EDT, 1 hour 18 minutes before
Hazardous Weather Outlook National Weather Service New York NY 825 AM EDT Sun Jul 16 2023 NJZ002-004-006-103>108-NYZ067-069-072>074-176-171230- Western Passaic-Eastern Passaic-Hudson-Western Bergen-Eastern Bergen- Western Essex-Eastern Essex-Western Union-Eastern Union-Orange- Rockland-New York (Manhattan)-Bronx-Richmond (Staten Island)- Northern Queens- 825 AM EDT Sun Jul 16 2023 ...FLOOD WATCH IN EFFECT THROUGH THIS EVENING... 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...Monday through Saturday. No hazardous weather is expected at this time that would meet NWS warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation according to Standard Operating Procedures is requested and appreciated. && 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>012-NYZ068-070-071-078-079-177-171230- Northern Fairfield-Northern New Haven-Northern Middlesex- Northern New London-Southern Fairfield-Southern New Haven- Southern Middlesex-Southern New London-Putnam-Northern Westchester- Southern Westchester-Northwest Suffolk-Northeast Suffolk- Northern Nassau- 825 AM EDT Sun Jul 16 2023 ...FLOOD WATCH IN EFFECT THROUGH THIS EVENING... ...TORNADO WATCH 497 IN EFFECT UNTIL 3 PM EDT THIS AFTERNOON... 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. Tornado Watch. .DAYS TWO THROUGH SEVEN...Monday through Saturday. No hazardous weather is expected at this time that would meet NWS warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation according to Standard Operating Procedures is requested and appreciated. && 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. NYZ075-178-171230- Kings (Brooklyn)-Southern Queens- 825 AM EDT Sun Jul 16 2023 ...FLOOD WATCH IN EFFECT THROUGH THIS EVENING... ...HIGH RIP CURRENT RISK IN EFFECT THROUGH 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. High Rip Current Risk. .DAYS TWO THROUGH SEVEN...Monday through Saturday. No hazardous weather is expected at this time that would meet NWS warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation according to Standard Operating Procedures is requested and appreciated. && 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. NYZ080-081-179-171230- Southwest Suffolk-Southeast Suffolk-Southern Nassau- 825 AM EDT Sun Jul 16 2023 ...FLOOD WATCH IN EFFECT THROUGH THIS EVENING... ...HIGH RIP CURRENT RISK IN EFFECT THROUGH THIS EVENING... ...TORNADO WATCH 497 IN EFFECT UNTIL 3 PM EDT 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 Rip Current Risk. Tornado Watch. .DAYS TWO THROUGH SEVEN...Monday through Saturday. No hazardous weather is expected at this time that would meet NWS warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation according to Standard Operating Procedures is requested and appreciated. && 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. ANZ331-332-335-340-345-350-353-355-171230- 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- 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- 825 AM EDT Sun Jul 16 2023 ...TORNADO WATCH 497 IN EFFECT UNTIL 3 PM EDT 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. Tornado Watch. .DAYS TWO THROUGH SEVEN...Monday through Saturday. No hazardous weather is expected at this time that would meet NWS warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation according to Standard Operating Procedures is requested and appreciated. && 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. ANZ338-171230- New York Harbor- 825 AM EDT Sun Jul 16 2023 This Hazardous Weather Outlook is for Atlantic coastal waters. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Monday through Saturday. No hazardous weather is expected at this time that would meet NWS warning criteria. .SPOTTER INFORMATION STATEMENT... Spotter activation according to Standard Operating Procedures is requested and appreciated. && 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
Special weather statement, Jul 16, 7:39 AM EDT, 2 hours 4 minutes before
Special Weather Statement
National Weather Service New York NY
739 AM EDT Sun Jul 16 2023
CTZ005-009-NYZ070-161230-
Northern Fairfield CT-Southern Fairfield CT-Northern Westchester NY-
739 AM EDT Sun Jul 16 2023
...A strong thunderstorm will impact portions of central Fairfield
and northern Westchester Counties through 830 AM EDT...
At 739 AM EDT, Doppler radar was tracking a strong thunderstorm near
Bedford, or near Mount Kisco, moving northeast at 25 mph.
HAZARD...Winds in excess of 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
This strong thunderstorm will be near...
Bedford around 745 AM EDT.
Norwalk around 805 AM EDT.
New Canaan around 810 AM EDT.
Ridgefield and Wilton around 820 AM EDT.
Westport and Weston around 825 AM EDT.
Fairfield and Redding around 830 AM EDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 4127 7316 4104 7368 4118 7382 4137 7356
4137 7355 4138 7354 4149 7338
TIME...MOT...LOC 1139Z 236DEG 20KT 4114 7368
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
NVSpecial weather statement, Jul 16, 7:52 AM EDT, 1 hour 51 minutes before
Special Weather Statement
National Weather Service New York NY
752 AM EDT Sun Jul 16 2023
CTZ005-006-161245-
Northern Fairfield CT-Northern New Haven CT-
752 AM EDT Sun Jul 16 2023
...A strong thunderstorm will impact portions of central Fairfield
and northwestern New Haven Counties through 845 AM EDT...
At 752 AM EDT, Doppler radar was tracking a strong thunderstorm over
Monroe, or near Shelton, moving northeast at 30 mph.
HAZARD...Winds in excess of 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
This strong thunderstorm will be near...
Seymour and Woodbridge around 805 AM EDT.
Southbury and Beacon Falls around 815 AM EDT.
Naugatuck and Prospect around 820 AM EDT.
Middlebury around 825 AM EDT.
Cheshire around 830 AM EDT.
Waterbury around 835 AM EDT.
Wolcott around 840 AM EDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 4160 7293 4156 7295 4156 7289 4126 7313
4125 7315 4124 7315 4129 7334 4151 7328
4151 7316 4156 7316 4157 7309 4159 7308
4159 7306 4161 7305 4162 7302 4163 7302
4164 7298 4164 7294
TIME...MOT...LOC 1152Z 203DEG 28KT 4133 7320
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
NVSpecial weather statement, Jul 16, 8:19 AM EDT, 1 hour 24 minutes before
Special Weather Statement
National Weather Service New York NY
819 AM EDT Sun Jul 16 2023
NYZ078>081-161315-
Southwest Suffolk NY-Northwest Suffolk NY-Southeast Suffolk NY-
Northeast Suffolk NY-
819 AM EDT Sun Jul 16 2023
...Strong thunderstorms will impact portions of western Suffolk
County through 915 AM EDT...
At 818 AM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from Mount Sinai to Patchogue to near Robert Moses
State Park. Movement was northeast at 25 mph.
HAZARD...Winds in excess of 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Islip, Brentwood, Commack, Centereach, Shirley, Deer Park,
Lindenhurst, Medford, Hauppauge, Ronkonkoma, Manorville, Stony Brook,
Babylon, Patchogue and Middle Island.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
A Tornado Watch remains in effect until 300 PM EDT for southeastern
New York.
&&
LAT...LON 4062 7343 4068 7343 4082 7331 4093 7320
4093 7317 4097 7315 4099 7311 4100 7264
4076 7272 4062 7321
TIME...MOT...LOC 1218Z 235DEG 23KT 4092 7299 4075 7300 4057 7331
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
JTLocal storm report, Jul 16, 8:41 AM EDT, 1 hour 2 minutes before
Preliminary Local Storm Report
National Weather Service New York NY
841 AM EDT Sun Jul 16 2023
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0825 AM Flash Flood Bethel 41.37N 73.41W
07/16/2023 Fairfield CT Trained Spotter
Mill Plain Road closed in Danbury with
flooding at Carluzzi's Danbury Market
parking lot. Multiple water rescues ongoing
in town.
&&Special weather statement, Jul 16, 8:42 AM EDT, 1 hour 1 minute before
Special Weather Statement
National Weather Service New York NY
842 AM EDT Sun Jul 16 2023
CTZ006-161345-
Northern New Haven CT-
842 AM EDT Sun Jul 16 2023
...Strong thunderstorms will impact portions of northwestern New
Haven County through 945 AM EDT...
At 841 AM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Farmington to Prospect to near Monroe.
Movement was northeast at 30 mph.
HAZARD...Wind gusts of 50 to 55 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Waterbury, Meriden, Wallingford, Naugatuck, Southbury, Wolcott,
Hamden, Cheshire, Seymour, Prospect, Woodbridge, Middlebury, Beacon
Falls, Bethany and Ansonia.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
A Tornado Watch remains in effect until 300 PM EDT for southern
Connecticut.
&&
LAT...LON 4164 7294 4156 7295 4156 7288 4154 7285
4157 7284 4155 7282 4157 7280 4157 7275
4156 7275 4136 7296 4136 7314 4142 7321
4151 7317 4152 7316 4156 7315 4157 7309
4159 7306 4161 7305 4162 7302 4163 7302
TIME...MOT...LOC 1241Z 228DEG 40KT 4175 7289 4153 7296 4141 7315
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH
JTSpecial weather statement, Jul 16, 9:11 AM EDT, 32 minutes before
Special Weather Statement
National Weather Service New York NY
911 AM EDT Sun Jul 16 2023
NYZ078>081-161415-
Southwest Suffolk NY-Northwest Suffolk NY-Southeast Suffolk NY-
Northeast Suffolk NY-
911 AM EDT Sun Jul 16 2023
...Strong thunderstorms will impact portions of western Suffolk
County through 1015 AM EDT...
At 910 AM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from 7 miles west of Mattituck to Yaphank to near
Babylon. Movement was northeast at 30 mph.
HAZARD...Wind gusts of 50 to 55 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Islip, Brentwood, Commack, Centereach, Shirley, Deer Park,
Lindenhurst, Medford, Hauppauge, Ronkonkoma, Manorville, Stony Brook,
Babylon, Patchogue and Middle Island.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
A Tornado Watch remains in effect until 300 PM EDT for southeastern
New York.
&&
LAT...LON 4093 7326 4092 7322 4093 7318 4097 7317
4099 7307 4099 7267 4102 7260 4073 7284
4061 7328 4060 7344
TIME...MOT...LOC 1310Z 222DEG 33KT 4104 7268 4084 7291 4068 7328
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPH
JTThe office that day
Everything else NWS New York, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 7:37 AM EDT | Areal Flood Advisory | OKX | Greater Bridgeport Planning Region, Naugatuck Valley Planning Region | 2 hr |
| Jul 16, 7:39 AM EDT | Special Weather Statement | OKX | 51 min | |
| Jul 16, 7:48 AM EDT | Flash Flood Warning | OKX | Greater Bridgeport Planning Region, Naugatuck Valley Planning Region | 3 hr |
| Jul 16, 7:52 AM EDT | Special Weather Statement | OKX | 53 min | |
| Jul 16, 8:42 AM EDT | Special Weather Statement | OKX | 63 min | |
| Jul 16, 10:29 AM EDT | Special Weather Statement | OKX | 46 min | |
| Jul 16, 11:25 AM EDT | Areal Flood Advisory | OKX | Southeastern Connecticut Planning Region | 3 hr |
| Jul 16, 11:30 AM EDT | Areal Flood Advisory | OKX | Greater Bridgeport Planning Region | 3 hr |
| Jul 16, 11:52 AM EDT | Areal Flood Advisory | OKX | Greater Bridgeport Planning Region, Naugatuck Valley Planning Region | 51 min |
| Jul 16, 11:52 AM EDT | Special Weather Statement | OKX | 38 min | |
| Jul 16, 12:23 PM EDT | Flash Flood Warning | OKX | Greater Bridgeport Planning Region, Naugatuck Valley Planning Region | 3 hr |
| Jul 16, 12:56 PM EDT | Flash Flood Warning | OKX | Greater Bridgeport Planning Region | 88 min |
| Jul 16, 3:00 PM EDT | Areal Flood Advisory | OKX | Greater Bridgeport Planning Region, Naugatuck Valley Planning Region | 105 min |
| Jul 16, 3:32 PM EDT | Special Weather Statement | OKX | 28 min | |
| Jul 16, 3:46 PM EDT | Areal Flood Advisory | OKX | Lower Connecticut River Valley Planning Region, Southeastern Connecticut Planning Region | 9 min |
| Jul 16, 3:55 PM EDT | Flash Flood Warning | OKX | Lower Connecticut River Valley Planning Region, Southeastern Connecticut Planning Region | 2 hr |
Nearby
Flash 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.