Alert archive / New York / Flash Flood Warnings in 2012

Flash Flood Warning 2, NWS Buffalo, NY

June 12, 2012Cattaraugus County, New York

NWS Buffalo, NY issued this flash flood warning at Jun 12, 2012, 3:19 PM EDT for Cattaraugus County, New York. It was in force for 116 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 12, 2012, 3:19 PM EDT (19:19 UTC)
Expired
Jun 12, 2012, 5:15 PM EDT
In force
116 min
Issued by
NWS Buffalo, NY
Area
Storm-based polygon
Flood severity
None

County Cattaraugus County, NY

The radar

The Buffalo radar (KBUF), 72 km from the middle of the area, began a volume at 19:22 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, 7.3 hours before the alert went out and 71 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 2012-06-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 78 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 2012-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 146 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
78 J/kg
Mixed-layer CIN
-19 J/kg
Mixed-layer LCL
575 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
146 m²/s²
0-3 km storm-relative helicity
148 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.

425 
WGUS51 KBUF 121919
FFWBUF
NYC009-122215-
/O.NEW.KBUF.FF.W.0002.120612T1919Z-120612T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
319 PM EDT TUE JUN 12 2012

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL CATTARAUGUS COUNTY IN WESTERN NEW YORK...

* UNTIL 615 PM EDT

* AT 313 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAIN FROM A THUNDERSTORM OVER THE WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL RAINFALL AMOUNTS OF HALF AN INCH OR SO ARE POSSIBLE IN THE 
WARNED AREA.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...
EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER
GROUND.

&&

LAT...LON 4236 7895 4236 7868 4222 7869 4221 7895

$$

THOMAS
2 follow-up statements
826 
WGUS71 KBUF 121931
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
331 PM EDT TUE JUN 12 2012

NYC009-122215-
/O.CON.KBUF.FF.W.0002.000000T0000Z-120612T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CATTARAUGUS NY-
331 PM EDT TUE JUN 12 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 PM EDT FOR
CENTRAL CATTARAUGUS COUNTY...

AT 325 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE THUNDERSTORMS WITH HEAVY RAIN OVER EAST CENTRAL CATTARAUGUS 
COUNTY. 

DUAL POL DOPPLER RADAR INDICATES THAT PREVIOUS STORMS HAVE ALREADY 
PRODUCED OVER 2 INCHES OF RAIN NEAR LITTLE VALLEY AND CATTARAUGUS... 
WITH ADDITIONAL STORMS FORECAST TO PRODUCE UP TO ANOTHER INCH OF 
RAIN. 

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CATTARAUGUS 
AND LITTLE VALLEY. WATERSHEDS IN THE WARNED AREA INCLUDE LITTLE 
VALLEY CREEK...CONEWANGO AND FORKS CREEKS... AND PLUM BROOK.

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.

IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS
FLOODED ROADS. FIND ALTERNATE ROUTES. IT TAKES ONLY A FEW INCHES OF
SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.

&&

LAT...LON 4236 7895 4236 7868 4222 7869 4221 7895

$$

RSH
105 
WGUS71 KBUF 122115
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
515 PM EDT TUE JUN 12 2012

NYC009-122125-
/O.CAN.KBUF.FF.W.0002.000000T0000Z-120612T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CATTARAUGUS NY-
515 PM EDT TUE JUN 12 2012

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR CENTRAL CATTARAUGUS
COUNTY...

THE FLOODING HAS RECEDED...THUS THE FLOOD WARNING HAS BEEN CANCELLED.

AT 515 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE
THUNDERSTORM THAT PROMPTED THE WARNING HAD EXITED THE AREA...THUS THE
FLOOD WARNING HAS BEEN CANCELLED.

LAT...LON 4236 7895 4236 7868 4222 7869 4221 7895

$$

WCH

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 12, 1:40 PM EDTSpecial Weather StatementBUFCattaraugus65 min
Jun 12, 2:55 PM EDTSpecial Weather StatementBUFWayne65 min
Jun 12, 2:59 PM EDTAreal Flood AdvisoryBUFAllegany, Cattaraugus3 hr
Jun 12, 3:40 PM EDTAreal Flood AdvisoryBUFAllegany3 hr
Jun 12, 3:45 PM EDTSmall Craft AdvisoryBUF19 hr
Jun 12, 3:58 PM EDTFlash Flood WarningBUFAllegany3 hr
Jun 12, 6:04 PM EDTSpecial Weather StatementBUFGenesee56 min
Jun 12, 7:16 PM EDTSpecial Marine WarningBUF59 min
Jun 12, 7:17 PM EDTSpecial Weather StatementBUFWyoming58 min

Nearby

Flash Flood Warnings in New York, 2012Every flash flood warning in 2012

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.