Alert archive / New York / Lakeshore Flood Warnings in 2017

Lakeshore Flood Warning 12, NWS Buffalo, NY

July 24, 20176 counties in New York

NWS Buffalo, NY issued this lakeshore flood warning at Jul 24, 2017, 1:10 PM EDT for 6 counties in New York. It took effect at Jul 25, 2017, 2:00 AM EDT. It was in force for 14 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 24, 2017, 1:10 PM EDT (17:10 UTC)
In effect from
Jul 25, 2017, 2:00 AM EDT
Expired
Jul 25, 2017, 3:49 PM EDT
In force
14 hr
Issued by
NWS Buffalo, NY

Counties Cayuga County, NY, Monroe County, NY, Niagara County, NY, Orleans County, NY, Oswego County, NY, Wayne County, NY

The radar

The Buffalo radar (KBUF), 113 km from the middle of the area, began a volume at 17:11 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.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 5.2 hours before the alert went out and 111 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.

Skew-T log-pSkew-T log-p diagram, Buffalo Intl Airport, NY at 12:00Z on 2017-07-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1109 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 12:00Z on 2017-07-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
1109 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
622 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
16 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this lakeshore flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Buffalo, NY wrote its last area forecast discussion before this lakeshore flood warning went out at Jul 24, 10:50 AM EDT, 2 hours 20 minutes earlier.

Area forecast discussion, Jul 24, 10:50 AM EDT, 2 hours 20 minutes before
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Hazardous weather outlook, Jul 24, 4:54 AM EDT, 8 hours 16 minutes before
Hazardous Weather Outlook
National Weather Service Buffalo NY
454 AM EDT Mon Jul 24 2017

NYZ001-002-250900-
Niagara-Orleans-
454 AM EDT Mon Jul 24 2017

...LAKESHORE FLOOD WATCH IN EFFECT FROM TUESDAY MORNING THROUGH
TUESDAY AFTERNOON...

This Hazardous Weather Outlook is for portions of western New York.

.DAY ONE...Today and Tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Lakeshore Flood Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

NYZ019-250900-
Chautauqua-
454 AM EDT Mon Jul 24 2017

...BEACH HAZARDS STATEMENT IN EFFECT FROM NOON EDT TODAY THROUGH
THIS EVENING...

This Hazardous Weather Outlook is for portions of western 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.

   Beach Hazards Statement.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

NYZ010>012-020-085-250900-
Northern Erie-Genesee-Wyoming-Cattaraugus-Southern Erie-
454 AM EDT Mon Jul 24 2017

This Hazardous Weather Outlook is for portions of western New York.

.DAY ONE...Today and Tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

NYZ003-004-250900-
Monroe-Wayne-
454 AM EDT Mon Jul 24 2017

...LAKESHORE FLOOD WATCH IN EFFECT FROM TUESDAY MORNING THROUGH
TUESDAY AFTERNOON...

This Hazardous Weather Outlook is for portions of western New York.

.DAY ONE...Today and Tonight.

Some additional thunderstorms will be likely today...a few of which
could produce strong gusty winds this afternoon.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Lakeshore Flood Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

NYZ005-013-014-021-250900-
Northern Cayuga-Livingston-Ontario-Allegany-
454 AM EDT Mon Jul 24 2017

This Hazardous Weather Outlook is for portions of western and north
central New York.

.DAY ONE...Today and Tonight.

Some additional thunderstorms will be likely today...a few of which
could produce strong gusty winds this afternoon.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

NYZ006-250900-
Oswego-
454 AM EDT Mon Jul 24 2017

This Hazardous Weather Outlook is for portions of central New York.

.DAY ONE...Today and Tonight.

Showers and thunderstorms are expected today...some of which could
produce locally heavy rainfall this morning...and strong gusty winds
this afternoon.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

NYZ007-008-250900-
Jefferson-Lewis-
454 AM EDT Mon Jul 24 2017

This Hazardous Weather Outlook is for portions of central New York.

.DAY ONE...Today and Tonight.

Showers and thunderstorms are expected today...some of which could
produce locally heavy rainfall this morning.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

LEZ020-040-041-LOZ030-042-062-250900-
Upper Niagara River and Buffalo Harbor-
Lake Erie nearshore waters from Ripley to Dunkirk-
Lake Erie nearshore waters from Dunkirk to Buffalo-
Lower Niagara River-
Lake Ontario nearshore waters from the Niagara River to Hamlin Beach-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
454 AM EDT Mon Jul 24 2017

This Hazardous Weather Outlook is for portions of Lake Erie and Lake
Ontario.

.DAY ONE...Today and Tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

LOZ043>045-063>065-250900-
Lake Ontario nearshore waters from Hamlin Beach to Sodus Bay-
Lake Ontario nearshore waters from Sodus Bay to Mexico Bay-
Lake Ontario nearshore waters from Mexico Bay to the Saint Lawrence
River-Lake Ontario open waters from Hamlin Beach to Sodus Bay-
Lake Ontario open waters from Sodus Bay to Mexico Bay-
Lake Ontario open waters from Mexico Bay to the Saint Lawrence River-
454 AM EDT Mon Jul 24 2017

This Hazardous Weather Outlook is for portions of Lake Ontario.

.DAY ONE...Today and Tonight.

Some additional thunderstorms will be likely today...a few of which
could produce strong gusty winds this afternoon.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

SLZ022-024-250900-
Saint Lawrence River from Cape Vincent to Ogdensburg-
Saint Lawrence River from Ogdensburg to Saint Regis-
454 AM EDT Mon Jul 24 2017

This Hazardous Weather Outlook is for the New York waters of the
Saint Lawrence River.

.DAY ONE...Today and Tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

JJR

In the hours before

Special weather statement, Jul 24, 7:22 AM EDT, 5 hours 48 minutes before
Special Weather Statement
National Weather Service Buffalo NY
722 AM EDT MON JUL 24 2017

NYZ003-241145-
Monroe-
722 AM EDT MON JUL 24 2017

...A STRONG THUNDERSTORM WILL AFFECT CENTRAL MONROE COUNTY...

At 722 AM EDT, a strong thunderstorm was located near Chili, moving
east at 30 mph.

Torrential rainfall is occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

Winds in excess of 30 mph are also possible with this storm.

Locations impacted include...
Rochester, Greece, Irondequoit, Chili, East Rochester, Webster,
Fairport, Brighton, Gates-North Gates and Henrietta.

This includes the following highways...
 Interstate 390 near exit 12.
 Interstate 90 near exit 46.

LAT...LON 4304 7788 4322 7790 4329 7740 4304 7737
      4304 7748 4302 7749
TIME...MOT...LOC 1122Z 265DEG 24KT 4314 7780

Smith
Special weather statement, Jul 24, 8:01 AM EDT, 5 hours 9 minutes before
Special Weather Statement
National Weather Service Buffalo NY
801 AM EDT MON JUL 24 2017

NYZ004-014-241300-
Ontario-Wayne-
801 AM EDT MON JUL 24 2017

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT SOUTHERN WAYNE AND
ONTARIO COUNTIES...

At 801 AM EDT, radar indicated strong thunderstorms were located
along a line extending from near Victor to near Canandaigua to near
Vine Valley. Movement was east at 30 mph.

Winds in excess of 40 mph are possible with these storms.

Locations impacted include...
Geneva, Canandaigua, Newark, Lyons, Palmyra, Victor, Clifton Springs,
Clyde, Phelps and Bloomfield.

This includes Interstate 90 between exits 45 and 42.

Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4289 7743 4303 7749 4304 7737 4310 7737
      4316 7688 4302 7680 4301 7696 4287 7696
      4286 7698 4276 7698 4276 7731 4275 7735
TIME...MOT...LOC 1201Z 263DEG 26KT 4303 7738 4290 7733 4278 7731

Thomas
Special weather statement, Jul 24, 9:04 AM EDT, 4 hours 6 minutes before
Special Weather Statement
National Weather Service Buffalo NY
904 AM EDT MON JUL 24 2017

NYZ005-006-241345-
Oswego-Northern Cayuga-
904 AM EDT MON JUL 24 2017

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHERN CAYUGA AND
WESTERN OSWEGO COUNTIES...

At 904 AM EDT, radar indicated strong thunderstorms were located
along a line extending from 7 miles north of Oswego to 6 miles
southeast of Fair Haven Beach State Park. Movement was east at 20
mph.

Winds in excess of 30 mph and pea size hail are possible with these
storms.

Locations impacted include...
Oswego, Fulton, Fair Haven Beach State Park, Sandy Island Beach State
Park, Pulaski, Central Square, Cato, Selkirk Shores State Park,
Mexico Point State Park and Nine Mile Point.

This includes Interstate 81 between exits 32 and 37.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4323 7612 4327 7620 4324 7621 4322 7619
      4320 7622 4324 7627 4322 7626 4320 7627
      4323 7631 4323 7648 4315 7647 4314 7649
      4318 7671 4328 7672 4344 7667 4356 7645
      4356 7628 4367 7626 4367 7599
TIME...MOT...LOC 1304Z 274DEG 19KT 4357 7654 4326 7664

Smith
Local storm report, Jul 24, 10:46 AM EDT, 2 hours 24 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BUFFALO NY
1046 AM EDT MON JUL 24 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0750 AM     LIGHTNING        ROCHESTER AIRPORT       43.12N  77.68W
07/24/2017                   MONROE             NY   OTHER FEDERAL

            ROCHESTER AIRPORT AIR TRAFFIC CONTROL TOWER STRUCK BY
            LIGHTNING

&&

EVENT NUMBER BUF1701293

SJW

The office that day

Everything else NWS Buffalo, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 23, 9:50 PM EDTSpecial Weather StatementBUFAllegany55 min
Jul 24, 4:29 AM EDTSmall Craft AdvisoryBUF21 hr
Jul 24, 4:31 AM EDTBeach Hazards StatementBUFChautauqua18 hr
Jul 24, 4:31 AM EDTLakeshore Flood WatchBUFMonroe, Niagara, Orleans, Wayne9 hr
Jul 24, 5:15 AM EDTSpecial Weather StatementBUFErie45 min
Jul 24, 5:22 AM EDTSpecial Weather StatementBUFOrleans23 min
Jul 24, 7:22 AM EDTSpecial Weather StatementBUFMonroe23 min
Jul 24, 7:44 AM EDTSevere Thunderstorm WarningBUFMonroe, Wayne39 min
Jul 24, 8:01 AM EDTSpecial Weather StatementBUFOntario59 min
Jul 24, 8:06 AM EDTSpecial Marine WarningBUF54 min
Jul 24, 8:59 AM EDTSpecial Marine WarningBUF61 min
Jul 24, 9:04 AM EDTSpecial Weather StatementBUFOswego41 min
Jul 24, 1:11 PM EDTSmall Craft AdvisoryBUF27 hr
Jul 24, 2:55 PM EDTSpecial Weather StatementBUFOswego50 min

Nearby

Lakeshore Flood Warnings in New York, 2017Every lakeshore flood warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.