Alert archive / New York / Flash Flood Warnings in 2015

Flash Flood Warning 16, NWS Buffalo, NY

July 14, 20154 counties in New York

NWS Buffalo, NY issued this flash flood warning at Jul 14, 2015, 3:04 PM EDT for 4 counties in New York. It was in force for 3 hr. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 14, 2015, 3:04 PM EDT (19:04 UTC)
Expired: Jul 14, 2015, 6:00 PM EDT
In force: 3 hr
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Flood severity: None

Counties Allegany County, NY, Cattaraugus County, NY, Erie County, NY, Wyoming County, NY

The radar

The Buffalo radar (KBUF), 62 km from the middle of the area, began a volume at 19:05 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.

What was reported inside it

Time	Report	Where	Remark
Jul 14, 4:45 PM EDT	FLASH FLOOD	2 Se Fillmore, NY	A PART OF BOTSFORD HOLLOW ROAD WASHED OUT AND CULVERT PIPE THAT LEADS INTO RUSH CREEK DESTROYED
Jul 14, 5:10 PM EDT	FLASH FLOOD	2 Sse Rossburg, NY	FLOODING AND ROAD CLOSURES IN THE TOWN OF GRANGER.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 7.1 hours before the alert went out and 60 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: 63 J/kg
Mixed-layer CIN: -100 J/kg
Mixed-layer LCL: 862 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 167 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

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

935 
WGUS51 KBUF 141904
FFWBUF
NYC003-009-029-121-142200-
/O.NEW.KBUF.FF.W.0016.150714T1904Z-150714T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
304 PM EDT TUE JUL 14 2015

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN ERIE COUNTY IN WESTERN NEW YORK...
  NORTHEASTERN CATTARAUGUS COUNTY IN WESTERN NEW YORK...
  NORTHWESTERN ALLEGANY COUNTY IN WESTERN NEW YORK...
  WESTERN WYOMING COUNTY IN WESTERN NEW YORK...

* UNTIL 600 PM EDT

* AT 300 PM EDT...DOPPLER RADAR INDICATED AN AREA OF HEAVY RAIN 
  MOVING SLOWLY ACROSS THE WARNED AREA. THIS HAS ALREADY CAUSED 
  FLASH FLOODING...WITH ADDITIONAL FLASH FLOODING EXPECTED IN THE 
  WARNED AREA. THESE STORMS ARE CAPABLE OF CAUSING RAINFALL RATES OF 
  TWO INCHES AN HOUR.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  SPRINGVILLE...ASHFORD...ARCADE...FRANKLINVILLE...RUSHFORD...
  CHAFFEE...VARYSBURG AND HOUGHTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY AWAY OR BE SWEPT AWAY. RIVER BANKS AND CULVERTS CAN BECOME 
UNSTABLE AND UNSAFE.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4219 7886 4261 7869 4280 7824 4244 7800
      4226 7833

$$

APFFEL

2 follow-up statements

181 
WGUS71 KBUF 142009
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
409 PM EDT TUE JUL 14 2015

NYC003-009-029-121-142200-
/O.CON.KBUF.FF.W.0016.000000T0000Z-150714T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ERIE NY-CATTARAUGUS NY-ALLEGANY NY-WYOMING NY-
409 PM EDT TUE JUL 14 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 600 PM EDT FOR
SOUTHEASTERN ERIE...NORTHEASTERN CATTARAUGUS...NORTHWESTERN ALLEGANY
AND SOUTHWESTERN WYOMING COUNTIES...

AT 403 PM EDT...DOPPLER RADAR INDICATED AN AREA OF THUNDERSTORMS 
MOVING EAST OF THE WARNED AREA. ALTHOUGH THE HEAVIEST RAIN WILL END 
SHORTLY...THESE STORMS HAVE CAUSED FLASH FLOODING ACROSS THE WARNED 
AREA...WITH NUMEROUS ROAD CLOSURES AND WASHOUTS. ALSO...SMALL CREEKS 
AND STREAMS MAY STILL CONTINUE TO RISE AFTER THE HEAVIEST RAIN HAS 
ENDED.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
SPRINGVILLE...ASHFORD...ARCADE...FRANKLINVILLE...RUSHFORD...
CHAFFEE...HOUGHTON AND ASHFORD HOLLOW.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

STAY AWAY OR BE SWEPT AWAY. RIVER BANKS AND CULVERTS CAN BECOME
UNSTABLE AND UNSAFE.

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4219 7886 4261 7869 4265 7858 4264 7814
      4244 7800 4226 7833

$$

APFFEL

262 
WGUS71 KBUF 142129
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
529 PM EDT TUE JUL 14 2015

NYC003-009-029-121-142135-
/O.CAN.KBUF.FF.W.0016.000000T0000Z-150714T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ERIE NY-CATTARAUGUS NY-ALLEGANY NY-WYOMING NY-
529 PM EDT TUE JUL 14 2015

...THE FLASH FLOOD WARNING FOR SOUTHEASTERN ERIE...NORTHEASTERN
CATTARAUGUS...NORTHWESTERN ALLEGANY AND SOUTHWESTERN WYOMING COUNTIES
IS CANCELLED...

THE FLASH FLOOD WARNING HAS BEEN REPLACED BY AN AREAL FLOOD WARNING. 
SLOWER RESPONDING CREEKS AND STREAMS ARE STILL CAUSING FLOODING IN 
SOME AREAS...AND THERE IS STILL A SIGNIFICANT AMOUNT OF STANDING 
WATER IN SOME AREAS. PLEASE REFER TO THE LATEST AREAL FLOOD WARNING 
PRODUCT FOR THE LATEST INFORMATION.

LAT...LON 4219 7886 4261 7869 4265 7858 4264 7814
      4244 7800 4226 7833

$$

APFFEL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 13, 11:58 PM EDT	Special Weather Statement	BUF	Chautauqua	92 min
Jul 14, 12:20 AM EDT	Flash Flood Warning	BUF	Chautauqua	4 hr
Jul 14, 4:03 AM EDT	Areal Flood Warning	BUF	Chautauqua	6 hr
Jul 14, 4:10 AM EDT	Flash Flood Watch	BUF	Allegany, Cattaraugus, Cayuga, Chautauqua, Erie, Genesee and 10 more	21 hr
Jul 14, 4:16 AM EDT	Small Craft Advisory	BUF		35 hr
Jul 14, 8:40 AM EDT	Special Weather Statement	BUF	Chautauqua	20 min
Jul 14, 9:22 AM EDT	Special Weather Statement	BUF	Chautauqua	23 min
Jul 14, 9:27 AM EDT	Special Weather Statement	BUF	Chautauqua	18 min
Jul 14, 9:50 AM EDT	Flash Flood Warning	BUF	Cattaraugus, Chautauqua, Erie	4 hr
Jul 14, 1:47 PM EDT	Flash Flood Warning	BUF	Cattaraugus, Chautauqua, Erie	3 hr
Jul 14, 2:25 PM EDT	Special Weather Statement	BUF	Cattaraugus	50 min
Jul 14, 2:42 PM EDT	Special Weather Statement	BUF	Oswego	63 min
Jul 14, 3:23 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus	67 min
Jul 14, 3:52 PM EDT	Flash Flood Warning	BUF	Allegany, Cattaraugus, Livingston, Wyoming	3 hr
Jul 14, 4:18 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Livingston, Wyoming	34 min
Jul 14, 4:19 PM EDT	Tornado Warning	BUF	Allegany	26 min
Jul 14, 5:24 PM EDT	Areal Flood Warning	BUF	Allegany, Cattaraugus, Chautauqua, Erie	5 hr
Jul 14, 7:51 PM EDT	Flash Flood Warning	BUF	Cattaraugus	3 hr

Nearby

Flash Flood Warnings in New York, 2015 Every flash flood warning in 2015

Sources

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