Alert archive / New York / Flash Flood Warnings in 2014

Flash Flood Warning 21, NWS Buffalo, NY

August 2, 2014Cattaraugus County, Chautauqua County, Erie County, New York

NWS Buffalo, NY issued this flash flood warning at Aug 2, 2014, 5:19 PM EDT for Cattaraugus County, Chautauqua County, Erie County, New York. It was in force for 4 hr. 4 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
Aug 2, 2014, 5:19 PM EDT (21:19 UTC)
Expired
Aug 2, 2014, 9:15 PM EDT
In force
4 hr
Issued by
NWS Buffalo, NY
Area
Storm-based polygon
Flood severity
None

Counties Cattaraugus County, NY, Chautauqua County, NY, Erie County, NY

The radar

The Buffalo radar (KBUF), 76 km from the middle of the area, began a volume at 21:20 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

TimeReportWhereRemark
Aug 2, 6:00 PM EDTFLASH FLOOD1 Se Jamestown West, NYWATER FLOWING DOWN MCDANIEL AVE.
Aug 2, 6:15 PM EDTFLASH FLOOD1 Sse South Wales, NYRIVER OF MUD FLOWED ACROSS ROUTE 16.
Aug 2, 6:30 PM EDTFLASH FLOODLakewood, NYFLOODING ON ROUTE 394 NEAR MALL BLVD.
Aug 2, 8:00 PM EDTFLOODSilver Creek, NYCENTRAL AVE IN TOWN CENTER CLOSED DUE TO STANDING WATER. ONE LANE CLOSED ON MAIN STREET AND ALSO ON CENTRAL AVE FOR A TIME DUE TO PONDING WATER.

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, 9.3 hours before the alert went out and 76 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 2014-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 82 joules per kilogram.LCLLFCEL10008507005003002001001 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 2014-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -17 square meters per square second.193958Sfc1 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
82 J/kg
Mixed-layer CIN
-136 J/kg
Mixed-layer LCL
1434 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
-17 m²/s²
0-3 km storm-relative helicity
49 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.

070 
WGUS51 KBUF 022119
FFWBUF
NYC009-013-029-030115-
/O.NEW.KBUF.FF.W.0021.140802T2119Z-140803T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
519 PM EDT SAT AUG 2 2014

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHERN CATTARAUGUS COUNTY IN WESTERN NEW YORK...
  CHAUTAUQUA COUNTY IN WESTERN NEW YORK...
  THIS INCLUDES THE CITIES OF...DUNKIRK...JAMESTOWN...FREDONIA...
  SOUTHERN ERIE COUNTY IN WESTERN NEW YORK...

* UNTIL 915 PM EDT

* AT 517 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA. SLOW      
  MOVING STORMS WILL PRODUCE RAINFALL AMOUNTS IN EXCESS OF TWO       
  INCHES...WHICH WILL RESULT IN LOCALIZED FLASH FLOODING IN THE      
  WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

&&

LAT...LON 4225 7977 4229 7975 4242 7946 4246 7943
      4252 7930 4256 7916 4260 7913 4265 7903
      4271 7847 4240 7846 4235 7854 4204 7911
      4199 7925 4200 7977

$$

APFFEL
3 follow-up statements
258 
WGUS71 KBUF 022217
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
617 PM EDT SAT AUG 2 2014

NYC009-013-029-030115-
/O.CON.KBUF.FF.W.0021.000000T0000Z-140803T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CATTARAUGUS NY-CHAUTAUQUA NY-ERIE NY-
617 PM EDT SAT AUG 2 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 PM EDT FOR
SOUTHERN ERIE...CHAUTAUQUA AND NORTHWESTERN CATTARAUGUS COUNTIES...

AT 607 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE THUNDERSTORMS PRODUCING FLASH FLOODING OVER THE WARNED AREA.

THE HEAVIEST RAINS EXTEND ACROSS SOUTHERN CHAUTAUQUA FROM FINDLEY 
LAKE TO JAMESTOWN...WITH PATCHY AREAS OF HEAVY RAIN REACHING INTO 
THE WYOMING HILLS. IN THESE AREAS...BETWEEN 1 TO 2 INCHES OF RAIN 
HAS ALREADY FALLEN...WITH MORE RAIN STILL MOVING INTO THE WARNED 
AREA.

THIS WILL PRODUCE FLASH FLOODING IN SOME LOCATIONS IN THE WARNED 
AREA. AREAS WILL STEEP TERRAIN...AND URBAN AREAS WILL BE MOST 
VULNERABLE TO FLASH FLOODING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

&&

LAT...LON 4225 7977 4229 7975 4242 7946 4246 7943
      4252 7930 4256 7916 4260 7913 4265 7903
      4271 7847 4240 7846 4235 7854 4204 7911
      4199 7925 4200 7977

$$

APFFEL
870 
WGUS71 KBUF 022253
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
653 PM EDT SAT AUG 2 2014

NYC009-013-029-030115-
/O.CON.KBUF.FF.W.0021.000000T0000Z-140803T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CATTARAUGUS NY-CHAUTAUQUA NY-ERIE NY-
653 PM EDT SAT AUG 2 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 PM EDT FOR
SOUTHEASTERN ERIE...CHAUTAUQUA AND NORTHWESTERN CATTARAUGUS
COUNTIES...

AT 645 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE THUNDERSTORMS PRODUCING FLASH FLOODING OVER THE WARNED AREA.

THE HEAVIEST RAIN HAS FALLEN ACROSS SOUTHERN CHAUTAUQUA FROM FINDLEY 
LAKE TO JAMESTOWN...WITH ANOTHER AREA OF LOCALLY HEAVY RAIN JUST 
EAST OF SPRINGVILLE. AROUND 2 INCHES OF RAIN HAS FALLEN IN THESE 
LOCATIONS...WITH UP TO AN ADDITIONAL HALF INCH OF RAIN POSSIBLE FROM 
LINGERING RAIN IN THE WARNED AREA.

THIS WILL PRODUCE FLASH FLOODING IN SOME LOCATIONS IN THE WARNED 
AREA. AREAS WITH STEEP TERRAIN AND URBAN AREAS WILL BE MOST 
VULNERABLE TO FLASH FLOODING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

&&

LAT...LON 4221 7977 4244 7924 4249 7899 4257 7847
      4240 7846 4221 7894 4199 7925 4200 7977

$$

APFFEL
248 
WGUS71 KBUF 030107
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
907 PM EDT SAT AUG 2 2014

NYC009-013-029-030117-
/O.EXP.KBUF.FF.W.0021.000000T0000Z-140803T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CATTARAUGUS NY-CHAUTAUQUA NY-ERIE NY-
907 PM EDT SAT AUG 2 2014

...THE FLASH FLOOD WARNING WILL EXPIRE AT 915 PM EDT FOR SOUTHEASTERN
ERIE...CHAUTAUQUA AND NORTHWESTERN CATTARAUGUS COUNTIES...

AT 907 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE
THUNDERSTORMS THAT PROMPTED THE WARNING HAD EXITED THE AREA...THUS 
THE FLOOD WARNING HAS BEEN ALLOWED TO EXPIRE. ADDITIONAL RAIN IS 
STILL POSSIBLE OVERNIGHT. 

LAT...LON 4221 7977 4244 7924 4249 7899 4257 7847
      4240 7846 4221 7894 4199 7925 4200 7977

$$

THOMAS

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 8:01 PM EDTAreal Flood WarningBUFWayne3 hr
Aug 1, 8:49 PM EDTAreal Flood AdvisoryBUFMonroe3 hr
Aug 1, 8:50 PM EDTSpecial Weather StatementBUFAllegany, Cattaraugus55 min
Aug 1, 9:18 PM EDTSpecial Weather StatementBUFWayne27 min
Aug 1, 9:34 PM EDTFlash Flood WarningBUFWayne3 hr
Aug 1, 9:47 PM EDTSpecial Weather StatementBUFAllegany, Cattaraugus58 min
Aug 1, 9:54 PM EDTSpecial Weather StatementBUFCayuga36 min
Aug 1, 10:07 PM EDTFlash Flood WarningBUFCattaraugus3 hr
Aug 1, 11:04 PM EDTSpecial Weather StatementBUFCattaraugus56 min
Aug 2, 12:32 AM EDTSpecial Weather StatementBUFChautauqua58 min
Aug 2, 1:45 AM EDTAreal Flood AdvisoryBUFChautauqua3 hr
Aug 2, 12:29 PM EDTSpecial Weather StatementBUFLewis31 min
Aug 2, 1:28 PM EDTSpecial Weather StatementBUFLewis62 min
Aug 2, 2:15 PM EDTFlash Flood WatchBUFCattaraugus, Chautauqua, Erie, Wyoming9 hr
Aug 2, 4:22 PM EDTSpecial Weather StatementBUFAllegany, Cattaraugus, Chautauqua, Erie, Wyoming83 min
Aug 2, 4:41 PM EDTSpecial Weather StatementBUFOswego64 min
Aug 2, 4:51 PM EDTSpecial Marine WarningBUF54 min
Aug 2, 4:58 PM EDTSpecial Marine WarningBUF92 min
Aug 2, 5:12 PM EDTFlash Flood WarningBUFLivingston, Monroe, Ontario, Wayne, Wyoming4 hr
Aug 2, 5:34 PM EDTSpecial Marine WarningBUF56 min
Aug 2, 5:48 PM EDTSpecial Marine WarningBUF87 min
Aug 2, 5:53 PM EDTSevere Thunderstorm WarningBUFErie, Genesee, Wyoming28 min
Aug 2, 6:50 PM EDTSpecial Weather StatementBUFGenesee55 min

Nearby

Flash Flood Warnings in New York, 2014Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.