Alert archive / New York / Flash Flood Warnings in 2019

Flash Flood Warning 10, NWS Buffalo, NY

July 5, 20194 counties in New York

NWS Buffalo, NY issued this flash flood warning at Jul 5, 2019, 2:56 PM EDT for 4 counties in New York. It was in force for 101 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 5, 2019, 2:56 PM EDT (18:56 UTC)
Expired: Jul 5, 2019, 4:37 PM EDT
In force: 101 min
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Flood severity: None

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

The radar

The Buffalo radar (KBUF), 117 km from the middle of the area, began a volume at 18:58 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, 6.9 hours before the alert went out and 114 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 232 J/kg
Mixed-layer CIN: -89 J/kg
Mixed-layer LCL: 899 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 45 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

229 
WGUS51 KBUF 051856
FFWBUF
NYC051-055-069-117-052300-
/O.NEW.KBUF.FF.W.0010.190705T1856Z-190705T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Buffalo NY
256 PM EDT Fri Jul 5 2019

The National Weather Service in Buffalo has issued a

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

* Until 700 PM EDT.

* At 255 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...
  Canandaigua, Newark, Marion, Lyons, Palmyra, Avon, Victor, Honeoye
  Falls, Bristol and Lima.

 This includes the following highways...
 Interstate 390 near exit 10.
 Interstate 90 between exits 45 and 43.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4323 7705 4311 7692 4284 7737 4279 7765
      4293 7775

$$

Apffel

1 follow-up statement

097 
WGUS71 KBUF 052037
FFSBUF

Flash Flood Statement
National Weather Service Buffalo NY
437 PM EDT Fri Jul 5 2019

NYC051-055-069-117-052046-
/O.CAN.KBUF.FF.W.0010.000000T0000Z-190705T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Wayne NY-Livingston NY-Monroe NY-Ontario NY-
437 PM EDT Fri Jul 5 2019

...THE FLASH FLOOD WARNING FOR SOUTHWESTERN WAYNE...NORTHEASTERN
LIVINGSTON...SOUTHEASTERN MONROE AND NORTHWESTERN ONTARIO COUNTIES IS
CANCELLED...

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

LAT...LON 4323 7705 4311 7692 4284 7737 4279 7765
      4293 7775

$$

Apffel

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 5, 4:21 AM EDT	Heat Advisory	BUF	Cayuga, Genesee, Livingston, Monroe, Niagara, Orleans and 1 more	14 hr
Jul 5, 11:05 AM EDT	Lakeshore Flood Watch	BUF	Monroe, Niagara, Orleans, Wayne	22 hr
Jul 5, 12:36 PM EDT	Special Weather Statement	BUF	Chautauqua	54 min
Jul 5, 1:23 PM EDT	Special Weather Statement	BUF	Monroe	52 min
Jul 5, 1:41 PM EDT	Special Weather Statement	BUF	Chautauqua	64 min
Jul 5, 2:17 PM EDT	Special Weather Statement	BUF	Monroe, Wayne	58 min
Jul 5, 2:44 PM EDT	Special Weather Statement	BUF	Cattaraugus, Chautauqua	61 min
Jul 5, 3:00 PM EDT	Flash Flood Warning	BUF	Cattaraugus, Chautauqua	2 hr
Jul 5, 4:10 PM EDT	Special Weather Statement	BUF	Ontario	35 min
Jul 5, 5:00 PM EDT	Special Weather Statement	BUF	Orleans	45 min
Jul 5, 5:09 PM EDT	Special Weather Statement	BUF	Lewis	36 min

Nearby

Flash Flood Warnings in New York, 2019 Every flash flood warning in 2019

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.