Alert archive / New York / Flash Flood Warnings in 2014

Flash Flood Warning 10, NWS Buffalo, NY

July 27, 20144 counties in New York

NWS Buffalo, NY issued this flash flood warning at Jul 27, 2014, 11:26 PM EDT for 4 counties in New York. It was in force for 4 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: Jul 27, 2014, 11:26 PM EDT (03:26 UTC)
Expired: Jul 28, 2014, 3:15 AM EDT
In force: 4 hr
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Flood severity: None

Counties Erie County, NY, Genesee County, NY, Niagara County, NY, Orleans County, NY

The radar

The Buffalo radar (KBUF), 34 km from the middle of the area, began a volume at 03:27 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 00:00Z, 3.4 hours before the alert went out and 35 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: 628 J/kg
Mixed-layer CIN: -79 J/kg
Mixed-layer LCL: 1463 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

964 
WGUS51 KBUF 280326
FFWBUF
NYC029-037-063-073-280715-
/O.NEW.KBUF.FF.W.0010.140728T0326Z-140728T0715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1126 PM EDT SUN JUL 27 2014

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHEASTERN ERIE COUNTY IN WESTERN NEW YORK...
  THIS INCLUDES THE VILLAGE AKRON...
  WESTERN GENESEE COUNTY IN WESTERN NEW YORK...
  EASTERN NIAGARA COUNTY IN WESTERN NEW YORK...
  WESTERN ORLEANS COUNTY IN WESTERN NEW YORK...
  THIS INCLUDES THE CITY OF MEDINA...

* UNTIL 315 AM EDT

* AT 1115 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR 
  INDICATED FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA. RADAR
  ESTIMATES AND SURFACE OBSERVATIONS SHOW THAT BETWEEN ONE TO ONE AND A 
  HALF INCHES OF RAIN HAS FALLEN OVER THE WARNED AREA. TRAINING THUNDERSTORMS 
  SLOWLY MOVING NORTHWARD OVER THE WARNED AREA WILL CONTINUE TO PRODUCE 
  HEAVY RAINFALL. ADDITIONAL RAINFALL AMOUNTS BETWEEN ONE AND TWO INCHES 
  ARE POSSIBLE THROUGH THE OVERNIGHT.      

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

&&

LAT...LON 4333 7883 4335 7873 4335 7868 4337 7863
      4338 7855 4338 7823 4288 7819 4288 7859
      4309 7860 4332 7886

$$

THOMAS

1 follow-up statement

308 
WGUS71 KBUF 280546
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
146 AM EDT MON JUL 28 2014

NYC029-037-063-073-280554-
/O.CAN.KBUF.FF.W.0010.000000T0000Z-140728T0715Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GENESEE NY-NIAGARA NY-ORLEANS NY-ERIE NY-
146 AM EDT MON JUL 28 2014

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR NORTHEASTERN
ERIE...WESTERN ORLEANS...EASTERN NIAGARA AND WESTERN GENESEE
COUNTIES...

AT 144 AM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE
THUNDERSTORMS THAT PROMPTED THE WARNING HAD EXITED THE AREA...THUS THE
FLOOD WARNING HAS BEEN CANCELLED. 

LAT...LON 4333 7883 4335 7873 4335 7868 4337 7863
      4338 7855 4338 7823 4288 7819 4288 7859
      4309 7860 4332 7886

$$

THOMAS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 27, 8:33 PM EDT	Special Marine Warning	BUF		42 min
Jul 27, 11:08 PM EDT	Special Weather Statement	BUF	Genesee, Niagara, Orleans	82 min
Jul 27, 11:55 PM EDT	Flash Flood Warning	BUF	Erie, Genesee, Wyoming	3 hr
Jul 28, 12:27 AM EDT	Flash Flood Warning	BUF	Livingston, Ontario	4 hr
Jul 28, 12:52 AM EDT	Flash Flood Warning	BUF	Livingston, Monroe, Ontario, Wayne	4 hr
Jul 28, 7:22 AM EDT	Special Weather Statement	BUF	Erie, Genesee, Livingston, Monroe, Niagara, Orleans and 1 more	83 min
Jul 28, 8:45 AM EDT	Flash Flood Warning	BUF	Livingston, Monroe, Ontario	6 hr
Jul 28, 9:16 AM EDT	Special Weather Statement	BUF	Chautauqua, Erie, Wyoming	74 min
Jul 28, 9:53 AM EDT	Flash Flood Warning	BUF	Monroe, Ontario	6 hr
Jul 28, 10:28 AM EDT	Special Weather Statement	BUF	Wyoming	77 min
Jul 28, 11:13 AM EDT	Special Weather Statement	BUF	Monroe	47 min
Jul 28, 12:52 PM EDT	Areal Flood Advisory	BUF	Monroe	3 hr

Nearby

Flash Flood Warnings in New York, 2014 Every flash flood warning in 2014

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.