Alert archive / New York / Flash Flood Warnings in 2017

Flash Flood Warning 2, NWS Buffalo, NY

June 15, 2017Livingston County, Monroe County, Ontario County, New York

NWS Buffalo, NY issued this flash flood warning at Jun 15, 2017, 7:05 PM EDT for Livingston County, Monroe County, Ontario County, New York. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 15, 2017, 7:05 PM EDT (23:05 UTC)
Expired
Jun 15, 2017, 10:00 PM EDT
In force
3 hr
Issued by
NWS Buffalo, NY
Area
Storm-based polygon
Flood severity
None

Counties Livingston County, NY, Monroe County, NY, Ontario County, NY

The radar

The Buffalo radar (KBUF), 93 km from the middle of the area, began a volume at 23:06 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, 11.1 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 2017-06-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°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 2017-06-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 90 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1392 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
90 m²/s²
0-3 km storm-relative helicity
100 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

079 
WGUS51 KBUF 152305
FFWBUF
NYC051-055-069-160200-
/O.NEW.KBUF.FF.W.0002.170615T2305Z-170616T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Buffalo NY
705 PM EDT THU JUN 15 2017

The National Weather Service in Buffalo has issued a

* Flash Flood Warning for...
  Northeastern Livingston County in western New York...
  Southeastern Monroe County in western New York...
  Northwestern Ontario County in western New York...

* Until 1000 PM EDT.

* At 705 PM EDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to two inches of rain have
  already fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Henrietta, Avon, Honeoye Falls, Caledonia, Lima, Scottsville,
  Mendon and Rush.

This includes the following highways...
 Interstate 390 between exits 11 and 12.
 Interstate 90 near exit 46.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 4307 7744 4290 7745 4293 7787 4305 7781

$$

Church
2 follow-up statements
591 
WGUS71 KBUF 160039
FFSBUF

Flash Flood Statement
National Weather Service Buffalo NY
839 PM EDT THU JUN 15 2017

NYC051-055-069-160200-
/O.CON.KBUF.FF.W.0002.000000T0000Z-170616T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Livingston NY-Monroe NY-Ontario NY-
839 PM EDT THU JUN 15 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1000 PM EDT FOR
NORTHEASTERN LIVINGSTON...SOUTHEASTERN MONROE AND NORTHWESTERN
ONTARIO COUNTIES...

At 836 PM EDT, Doppler radar indicated between one and two inches of 
rain has fallen across the warned area from thunderstorms that 
passed through this evening. Run off from these storms will continue 
to bring ponding of water to low lying roads, and possibly produce a 
road closure. 

Some locations that will experience flooding include...
Henrietta, Avon, Honeoye Falls, Caledonia, Lima, Scottsville, Mendon
and Rush.

This includes the following highways...
 Interstate 390 between exits 11 and 12.
 Interstate 90 near exit 46.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&

LAT...LON 4307 7744 4290 7745 4293 7787 4305 7781

$$

Thomas
732 
WGUS71 KBUF 160158
FFSBUF

Flash Flood Statement
National Weather Service Buffalo NY
958 PM EDT THU JUN 15 2017

NYC051-055-069-160208-
/O.EXP.KBUF.FF.W.0002.000000T0000Z-170616T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Livingston NY-Monroe NY-Ontario NY-
958 PM EDT THU JUN 15 2017

...THE FLASH FLOOD WARNING FOR NORTHEASTERN LIVINGSTON...SOUTHEASTERN
MONROE AND NORTHWESTERN ONTARIO COUNTIES WILL EXPIRE AT 1000 PM
EDT...

The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed any remaining road closures.

LAT...LON 4307 7744 4290 7745 4293 7787 4305 7781

$$

Thomas

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 15, 9:16 AM EDTSpecial Weather StatementBUFGenesee59 min
Jun 15, 10:17 AM EDTSpecial Weather StatementBUFLivingston, Monroe58 min
Jun 15, 11:24 AM EDTSpecial Weather StatementBUFOntario, Wayne66 min
Jun 15, 11:41 AM EDTFlash Flood WatchBUFAllegany, Cattaraugus, Chautauqua, Erie, Genesee, Livingston and 4 more11 hr
Jun 15, 3:46 PM EDTSpecial Weather StatementBUFAllegany, Cattaraugus, Livingston, Ontario, Wyoming3 hr
Jun 15, 4:16 PM EDTSevere Thunderstorm WarningBUFLivingston, Ontario44 min
Jun 15, 4:54 PM EDTSevere Thunderstorm WarningBUFOntario66 min
Jun 15, 4:54 PM EDTSevere Thunderstorm WarningBUFGenesee, Livingston, Monroe51 min
Jun 15, 5:19 PM EDTFlash Flood WarningBUFAllegany, Cattaraugus, Livingston, Ontario, Wyoming7 hr
Jun 15, 5:26 PM EDTSevere Thunderstorm WarningBUFLivingston, Ontario64 min
Jun 15, 5:26 PM EDTSevere Thunderstorm WarningBUFGenesee, Monroe, Orleans49 min
Jun 15, 5:46 PM EDTSevere Thunderstorm WarningBUFMonroe29 min
Jun 15, 5:53 PM EDTSpecial Marine WarningBUF52 min
Jun 15, 6:31 PM EDTSpecial Weather StatementBUFAllegany29 min
Jun 15, 6:42 PM EDTSpecial Weather StatementBUFMonroe63 min

Nearby

Flash Flood Warnings in New York, 2017Every flash 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.