Alert archive / New York / Flash Flood Warnings in 2015

Flash Flood Warning 24, NWS Buffalo, NY

August 10, 2015Erie County, Genesee County, Wyoming County, New York

NWS Buffalo, NY issued this flash flood warning at Aug 10, 2015, 6:01 PM EDT for Erie County, Genesee County, Wyoming County, New York. It was in force for 3 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
Aug 10, 2015, 6:01 PM EDT (22:01 UTC)
Expired
Aug 10, 2015, 9:00 PM EDT
In force
3 hr
Issued by
NWS Buffalo, NY
Area
Storm-based polygon
Flood severity
None

Counties Erie County, NY, Genesee County, NY, Wyoming County, NY

The radar

The Buffalo radar (KBUF), 51 km from the middle of the area, began a volume at 22:01 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, 10.0 hours before the alert went out and 47 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 2015-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2015-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1535 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
37 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.

207 
WGUS51 KBUF 102201
FFWBUF
NYC029-037-121-110100-
/O.NEW.KBUF.FF.W.0024.150810T2201Z-150811T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
601 PM EDT MON AUG 10 2015

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  EASTERN GENESEE COUNTY IN WESTERN NEW YORK...
  EAST CENTRAL ERIE COUNTY IN WESTERN NEW YORK...
  NORTHWESTERN WYOMING COUNTY IN WESTERN NEW YORK...

* UNTIL 900 PM EDT
    
* AT 601 PM EDT...DOPPLER RADAR INDICATED A THUNDERSTORM 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...
  BATAVIA...LE ROY...WARSAW...BENNINGTON...ATTICA...PAVILION...BYRON
  AND ARCADE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

&&

LAT...LON 4263 7866 4309 7808 4297 7791 4295 7791
      4294 7793 4291 7794 4290 7796 4289 7796
      4282 7804 4254 7841

$$

CHURCH
2 follow-up statements
323 
WGUS71 KBUF 102316
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
716 PM EDT MON AUG 10 2015

NYC029-037-121-110100-
/O.CON.KBUF.FF.W.0024.000000T0000Z-150811T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GENESEE NY-ERIE NY-WYOMING NY-
716 PM EDT MON AUG 10 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 900 PM EDT FOR
EASTERN GENESEE...EAST CENTRAL ERIE AND NORTHWESTERN WYOMING
COUNTIES...

AT 715 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING 
HEAVY RAIN ACROSS THE WARNED AREA...WHERE AS MUCH AS TWO TO THREE 
INCHES OF RAIN HAVE ALREADY FALLEN...AND ADDITIONAL RAINFALL AMOUNTS 
OF UP TO ANOTHER HALF INCH TO AN INCH ARE POSSIBLE. FLASH FLOODING 
IS EXPECTED TO BEGIN SHORTLY.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
BATAVIA...LE ROY...WARSAW...BENNINGTON...ATTICA...PAVILION...BYRON
AND ARCADE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

&&

LAT...LON 4263 7866 4309 7808 4297 7791 4295 7791
      4294 7793 4291 7794 4290 7796 4289 7796
      4282 7804 4254 7841

$$

JJR
371 
WGUS71 KBUF 110050
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
850 PM EDT MON AUG 10 2015

NYC029-037-121-110056-
/O.CAN.KBUF.FF.W.0024.000000T0000Z-150811T0100Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GENESEE NY-ERIE NY-WYOMING NY-
850 PM EDT MON AUG 10 2015

...THE FLASH FLOOD WARNING FOR EASTERN GENESEE...EAST CENTRAL ERIE
AND NORTHWESTERN WYOMING COUNTIES IS CANCELLED...

CALLS TO AREA LAW ENFORCEMENT INDICATE THAT NO FLASH FLOODING IS 
ONGOING ACROSS THE WARNED AREA. DOPPLER RADAR ALSO INDICATES THAT 
MOST OF THE HEAVY RAINFALL HAS ENDED...WITH ANY LINGERING HEAVY 
SHOWERS AND THUNDERSTORMS EXPECTED TO MOVE FAIRLY QUICKLY ACROSS 
AREAS THAT HAVE RECEIVED SUBSTANTIALLY LESS RAINFALL. FOR THE ABOVE 
REASONS...THE FLASH FLOOD WARNING HAS BEEN CANCELLED.

LAT...LON 4263 7866 4309 7808 4297 7791 4295 7791
      4294 7793 4291 7794 4290 7796 4289 7796
      4282 7804 4254 7841

$$

JJR

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 10, 3:08 PM EDTFlash Flood WarningBUFWayne6 hr
Aug 10, 3:24 PM EDTSpecial Weather StatementBUFLewis51 min
Aug 10, 3:56 PM EDTSpecial Weather StatementBUFMonroe49 min
Aug 10, 4:31 PM EDTSpecial Marine WarningBUF59 min
Aug 10, 4:43 PM EDTSpecial Weather StatementBUFWayne47 min
Aug 10, 5:15 PM EDTSpecial Marine WarningBUF60 min
Aug 10, 5:15 PM EDTSpecial Weather StatementBUFWyoming45 min
Aug 10, 5:17 PM EDTSevere Thunderstorm WarningBUFErie, Genesee, Wyoming43 min
Aug 10, 5:22 PM EDTSevere Thunderstorm WarningBUFCayuga, Wayne53 min
Aug 10, 6:16 PM EDTFlash Flood WarningBUFWayne3 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.