Alert archive / New York / Flash Flood Warnings in 2015

Flash Flood Warning 13, NWS Buffalo, NY

July 14, 2015Chautauqua County, New York

NWS Buffalo, NY issued this flash flood warning at Jul 14, 2015, 12:20 AM EDT for Chautauqua County, New York. It was in force for 4 hr. 9 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, 12:20 AM EDT (04:20 UTC)
Expired
Jul 14, 2015, 4:15 AM EDT
In force
4 hr
Issued by
NWS Buffalo, NY
Area
Storm-based polygon
Flood severity
None

County Chautauqua County, NY

The radar

The Buffalo radar (KBUF), 93 km from the middle of the area, began a volume at 04:20 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
Jul 14, 12:45 AM EDTFLASH FLOOD1 W Shore Haven, NYNY ROUTE 5 CLOSED IN BOTH DIRECTIONS BETWEEN ROUTE 76 AND ROUTE 394 DUE TO FLOODING.
Jul 14, 1:22 AM EDTFLASH FLOODWestfield, NYNUMEROUS ROADS AND MOBILE HOMES FLOODED IN THE VILLAGE
Jul 14, 1:30 AM EDTFLASH FLOODWestfield, NYCARS TRAPPED IN WATER ON THE NYS THRUWAY
Jul 14, 1:45 AM EDTFLASH FLOODPortland, NYNUMEROUS ROADS FLOODED AND IMPASSABLE. HOMES FLOODED.
Jul 14, 2:10 AM EDTFLASH FLOODBrocton, NYNUMEROUS ROADS FLOODED AND IMPASSABLE. HOMES FLOODED.
Jul 14, 2:10 AM EDTFLASH FLOODBrocton, NYTWITTER PICTURES OF ROAD DAMAGE DUE TO FLASH FLOODING AT LAKE AVE AND PEERLESS ST AT THE RAILROAD TUNNEL.
Jul 14, 2:41 AM EDTFLASH FLOOD2 W Westfield, NYNYS THRUWAY I-90 EASTBOUND CLOSED DUE TO FLOODING
Jul 14, 2:41 AM EDTFLASH FLOODPortland, NYTWITTER PICTURES OF WOLEBEN ROAD WASHED OUT IN PORTLAND
Jul 14, 3:01 AM EDTFLASH FLOODCassadaga, NYROUTE 60 CLOSED IN BOTH DIRECTIONS DUE TO FLOODING.

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 00:00Z, 4.3 hours before the alert went out and 94 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 00:00Z on 2015-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 142 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 00:00Z on 2015-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 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
142 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
1774 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
26 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.

217 
WGUS51 KBUF 140420
FFWBUF
NYC013-140815-
/O.NEW.KBUF.FF.W.0013.150714T0420Z-150714T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1220 AM EDT TUE JUL 14 2015

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  WESTERN CHAUTAUQUA COUNTY IN WESTERN NEW YORK...

* UNTIL 415 AM EDT
    
* AT 1216 AM EDT...DOPPLER RADAR INDICATED A SLOW MOVING 
  THUNDERSTORM PRODUCING HEAVY RAIN ALONG THE LAKE ERIE SHORE FROM 
  NEAR RIPLEY TO WESTFIELD AND BROCTON. UP TO 1.5 INCHES OF RAIN HAS 
  ALREADY FALLEN. ADDITIONAL RAINFALL AMOUNTS OF UP TO 1.5 INCHES 
  ARE POSSIBLE IN THE SAME AREAS. FLASH FLOODING IS EXPECTED TO 
  BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... 
  WESTFIELD...PORTLAND...RIPLEY...AND BROCTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODING. EXPECT RAPID RISES ON SMALL STREAMS AND IN LOW 
LYING AREAS. FLOODING MAY MAKE SOME ROADS IMPASSABLE. TURN AROUND 
DONT DROWN!

&&

LAT...LON 4232 7964 4241 7945 4244 7942 4245 7942
      4246 7939 4226 7924 4218 7976 4227 7976

$$

HITCHCOCK
3 follow-up statements
703 
WGUS71 KBUF 140529
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
129 AM EDT TUE JUL 14 2015

NYC013-140815-
/O.CON.KBUF.FF.W.0013.000000T0000Z-150714T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHAUTAUQUA NY-
129 AM EDT TUE JUL 14 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 AM EDT FOR
CENTRAL CHAUTAUQUA COUNTY...

AT 125 AM EDT...DOPPLER RADAR INDICATED A SLOW MOVING BAND OF 
THUNDERSTORMS PRODUCING TORRENTIAL RAINFALL FROM NEAR WESTFIELD TO 
CASSADAGA. UP TO THREE INCHES OF RAIN HAVE ALREADY FALLEN. 
ADDITIONAL RAINFALL AMOUNTS OF UP TO AN INCH ARE POSSIBLE. 

LOCAL LAW ENFORCEMENT REPORTS THAT FLASH FLOODING IS ALREADY 
OCCURRING IN WESTFIELD AND SURROUNDING COMMUNITIES. NUMEROUS ROADS 
ARE FLOODED AND IMPASSABLE...AND FLOODING IS IMPACTING NUMEROUS 
HOMES.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... 
WESTFIELD...PORTLAND...RIPLEY...STOCKTON...BROCTON...AND CASSADAGA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODING. EXPECT RAPID RISES ON SMALL STREAMS AND IN LOW 
LYING AREAS. FLOODING WILL MAKE SOME ROADS IMPASSABLE. TURN AROUND 
DONT DROWN!

&&

LAT...LON 4232 7964 4241 7945 4242 7936 4226 7924
      4224 7976 4227 7976

$$

HITCHCOCK
090 
WGUS71 KBUF 140630
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
230 AM EDT TUE JUL 14 2015

NYC013-140815-
/O.CON.KBUF.FF.W.0013.000000T0000Z-150714T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHAUTAUQUA NY-
230 AM EDT TUE JUL 14 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 AM EDT FOR
WESTERN CHAUTAUQUA COUNTY...

AT 226 AM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS AND HEAVY 
RAINFALL HAVE ENDED IN WESTERN CHAUTAUQUA COUNTY. EVEN THOUGH RAIN 
HAS ENDED...WATER WILL LIKELY CONTINUE TO RISE FOR ANOTHER HOUR OR 
TWO IN SMALL STREAMS AND LOW LYING AREAS AS EXCESSIVE RUNOFF 
CONTINUES. RADAR ESTIMATES THAT 3 TO 4 INCHES OF RAIN HAS FALLEN 
OVER THE PAST SEVERAL HOURS.

LOCAL EMERGENCY MANAGEMENT REPORTS SIGNIFICANT FLASH FLOODING 
ONGOING IN WESTFIELD...BROCTON...AND PORTLAND. NUMEROUS ROADS ARE 
FLOODED AND IMPASSABLE AND NUMEROUS HOMES ARE BEING FLOODED.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE... 
WESTFIELD...PORTLAND...RIPLEY...STOCKTON...BROCTON...AND CASSADAGA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE 
DANGERS OF FLOODING. EXPECT RAPID RISES ON SMALL STREAMS AND IN LOW 
LYING AREAS. FLOODING WILL MAKE SOME ROADS IMPASSABLE. TURN AROUND 
DONT DROWN!

&&

LAT...LON 4232 7964 4241 7945 4242 7936 4226 7924
      4224 7976 4227 7976

$$

HITCHCOCK
788 
WGUS71 KBUF 140812
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
412 AM EDT TUE JUL 14 2015

NYC013-140819-
/O.EXP.KBUF.FF.W.0013.000000T0000Z-150714T0815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CHAUTAUQUA NY-
412 AM EDT TUE JUL 14 2015

...THE FLASH FLOOD WARNING FOR WESTERN CHAUTAUQUA COUNTY WILL EXPIRE
AT 415 AM EDT...

THE FLASH FLOOD WARNING HAS BEEN REPLACED BY A FLOOD WARNING WHICH 
IS IN EFFECT UNTIL 10 AM. THE RAPID WATER RISES HAVE SLOWED DOWN... 
HOWEVER HIGH WATER WILL CONTINUE TO RESULT IN FLOODING OF SMALL 
STREAMS AND LOW LYING AREAS THROUGH MID MORNING. SEE THE FLOOD 
WARNING FOR MORE DETAILS.

LAT...LON 4232 7964 4241 7945 4242 7936 4226 7924
      4224 7976 4227 7976

$$

HITCHCOCK

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 13, 11:58 PM EDTSpecial Weather StatementBUFChautauqua92 min
Jul 14, 4:03 AM EDTAreal Flood WarningBUFChautauqua6 hr
Jul 14, 4:10 AM EDTFlash Flood WatchBUFAllegany, Cattaraugus, Cayuga, Chautauqua, Erie, Genesee and 10 more21 hr
Jul 14, 4:16 AM EDTSmall Craft AdvisoryBUF35 hr
Jul 14, 8:40 AM EDTSpecial Weather StatementBUFChautauqua20 min
Jul 14, 9:22 AM EDTSpecial Weather StatementBUFChautauqua23 min
Jul 14, 9:27 AM EDTSpecial Weather StatementBUFChautauqua18 min
Jul 14, 9:50 AM EDTFlash Flood WarningBUFCattaraugus, Chautauqua, Erie4 hr
Jul 14, 1:47 PM EDTFlash Flood WarningBUFCattaraugus, Chautauqua, Erie3 hr
Jul 14, 2:25 PM EDTSpecial Weather StatementBUFCattaraugus50 min
Jul 14, 2:42 PM EDTSpecial Weather StatementBUFOswego63 min
Jul 14, 3:04 PM EDTFlash Flood WarningBUFAllegany, Cattaraugus, Erie, Wyoming3 hr
Jul 14, 3:23 PM EDTSevere Thunderstorm WarningBUFAllegany, Cattaraugus67 min
Jul 14, 3:52 PM EDTFlash Flood WarningBUFAllegany, Cattaraugus, Livingston, Wyoming3 hr
Jul 14, 4:18 PM EDTSevere Thunderstorm WarningBUFAllegany, Livingston, Wyoming34 min
Jul 14, 4:19 PM EDTTornado WarningBUFAllegany26 min
Jul 14, 5:24 PM EDTAreal Flood WarningBUFAllegany, Cattaraugus, Chautauqua, Erie5 hr
Jul 14, 7:51 PM EDTFlash Flood WarningBUFCattaraugus3 hr

Nearby

Flash Flood Warnings in New York, 2015Every 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.