Alert archive / New York / Areal Flood Warnings in 2018

Areal Flood Warning 12, NWS Buffalo, NY

August 14, 2018Monroe County, New York

NWS Buffalo, NY issued this areal flood warning at Aug 14, 2018, 1:45 PM EDT for Monroe County, New York. It was in force for 20 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
Aug 14, 2018, 1:45 PM EDT (17:45 UTC)
Expired
Aug 15, 2018, 9:36 AM EDT
In force
20 hr
Issued by
NWS Buffalo, NY
Area
Storm-based polygon
Flood severity
None

County Monroe County, NY

The radar

The Buffalo radar (KBUF), 93 km from the middle of the area, began a volume at 17:48 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, 5.8 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.

Skew-T log-pSkew-T log-p diagram, Buffalo Intl Airport, NY at 12:00Z on 2018-08-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 18 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 2018-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 79 square meters per square second.1939Sfc1 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
18 J/kg
Mixed-layer CIN
-85 J/kg
Mixed-layer LCL
1188 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
79 m²/s²
0-3 km storm-relative helicity
110 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 areal 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 areal flood warning went out at Aug 14, 10:45 AM EDT, 3 hours earlier.

Area forecast discussion, Aug 14, 10:45 AM EDT, 3 hours before
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Hazardous weather outlook, Aug 14, 5:11 AM EDT, 8 hours 34 minutes before
Hazardous Weather Outlook
National Weather Service Buffalo NY
511 AM EDT Tue Aug 14 2018

NYZ001-002-010>012-019-020-085-150915-
Niagara-Orleans-Northern Erie-Genesee-Wyoming-Chautauqua-Cattaraugus-
Southern Erie-
511 AM EDT Tue Aug 14 2018

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...Wednesday through Monday.

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>008-013-014-021-150915-
Monroe-Wayne-Northern Cayuga-Oswego-Jefferson-Lewis-Livingston-
Ontario-Allegany-
511 AM EDT Tue Aug 14 2018

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

.DAY ONE...Today and Tonight.

Showers and scattered thunderstorms will continue today. A few
storms may produce locally heavy rainfall, with isolated flooding
possible.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

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>045-062>065-SLZ022-024-150915-
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 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 the Niagara River to Hamlin Beach-
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-
Saint Lawrence River from Cape Vincent to Ogdensburg-
Saint Lawrence River from Ogdensburg to Saint Regis-
511 AM EDT Tue Aug 14 2018

This Hazardous Weather Outlook is for the New York waters of Lake
Erie, Lake Ontario, and the Saint Lawrence River.

.DAY ONE...Today and Tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

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

In the hours before

Special weather statement, Aug 14, 8:41 AM EDT, 5 hours 4 minutes before
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Local storm report, Aug 14, 9:55 AM EDT, 3 hours 50 minutes before
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Local storm report, Aug 14, 10:36 AM EDT, 3 hours 9 minutes before
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Local storm report, Aug 14, 10:43 AM EDT, 3 hours 2 minutes before
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Local storm report, Aug 14, 10:56 AM EDT, 2 hours 49 minutes before
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Local storm report, Aug 14, 11:51 AM EDT, 1 hour 54 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 14, 5:24 AM EDTSpecial Weather StatementBUFCayuga51 min
Aug 14, 6:20 AM EDTSpecial Weather StatementBUFWayne55 min
Aug 14, 7:21 AM EDTSpecial Weather StatementBUFOntario, Wayne54 min
Aug 14, 8:17 AM EDTSpecial Weather StatementBUFWayne58 min
Aug 14, 8:41 AM EDTSpecial Weather StatementBUFOswego64 min
Aug 14, 9:21 AM EDTFlash Flood WarningBUFMonroe, Ontario, Wayne5 hr
Aug 14, 3:12 PM EDTSpecial Weather StatementBUFOswego63 min
Aug 14, 3:34 PM EDTFlash Flood WarningBUFOswego3 hr
Aug 14, 4:17 PM EDTFlash Flood WarningBUFJefferson, Oswego3 hr
Aug 14, 4:53 PM EDTSpecial Weather StatementBUFLewis37 min
Aug 14, 5:27 PM EDTSpecial Weather StatementBUFJefferson, Lewis48 min

Nearby

Areal Flood Warnings in New York, 2018Every areal flood warning in 2018

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.