Alert archive / New York / Flash Flood Warnings in 2008

Flash Flood Warning 9, NWS Buffalo, NY

August 10, 2008Erie County, New York

NWS Buffalo, NY issued this flash flood warning at Aug 10, 2008, 1:25 PM EDT for Erie County, New York. It was in force for 2 hr. 1 report 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 10, 2008, 1:25 PM EDT (17:25 UTC)
Expired
Aug 10, 2008, 3:52 PM EDT
In force
2 hr
Issued by
NWS Buffalo, NY
Area
Storm-based polygon
Flood severity
None

County Erie County, NY

The radar

The Buffalo radar (KBUF), 25 km from the middle of the area, began a volume at 17:28 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 10, 3:11 PM EDTFLASH FLOOD1 W Lancaster, NYTRANSIT ROAD BETWEEN WALDEN AND BROADWAY CLOSED.

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, 5.4 hours before the alert went out and 25 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 2008-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 400 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 2008-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 58 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
400 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
594 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
58 m²/s²
0-3 km storm-relative helicity
83 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.8

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KBUF 101725
FFWBUF
NYC029-102015-
/O.NEW.KBUF.FF.W.0009.080810T1725Z-080810T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
125 PM EDT SUN AUG 10 2008

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL ERIE COUNTY IN WESTERN NEW YORK...
  THIS INCLUDES THE CITIES OF...WEST SENECA...LANCASTER...
  LACKAWANNA...HAMBURG...EAST AURORA...

* UNTIL 415 PM EDT

* AT 119 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  ANOTHER BAND OF INTENSE LAKE EFFECT RAIN MOVING IN OFF LAKE ERIE   
  ACROSS CENTRAL ERIE COUNTY. THIS BAND HAS THE POTENTIAL OF ANOTHER 
  INCH OR MORE OF RAIN WHICH WILL FALL ACROSS AREAS WHICH HAVE       
  ALREADY RECEIVED 1 TO 3 INCHES OF RAIN THIS MORNING. WIDESPREAD    
  URBAN FLOODING AND ROAD CLOSURES MAY RESULT. THE AREAS OF HIGHEST  
  RISK WILL BE LANCASTER...WEST SENECA...AND DEPEW.

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

LAT...LON 4271 7904 4273 7898 4275 7896 4275 7892
      4279 7887 4287 7888 4293 7854 4265 7857
      4262 7909

$$

MCLAUGHLIN
2 follow-up statements
000 
WGUS71 KBUF 101909
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
309 PM EDT SUN AUG 10 2008

NYC029-102015-
/O.CON.KBUF.FF.W.0009.000000T0000Z-080810T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ERIE NY-
309 PM EDT SUN AUG 10 2008

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 415 PM EDT FOR
CENTRAL ERIE COUNTY...

AT 305 PM EDT...SHOWERS CONTINUED MOVING OVER THE AREA. THE ACTIVITY 
HAD WEAKENED IN THE PAST HOUR...BUT ADDITIONAL SHOWERS AND POSSIBLE 
THUNDERSTORMS ARE STILL POSSIBLE. SPOTTER REPORTS AND RADAR 
INDICATIONS ARE THAT 2 TO 3 INCHES OF RAIN HAS FALLEN SINCE 9 AM 
THIS MORNING IN THE WARNED AREA SO ANY ADDITIONAL RAINFALL WILL ONLY 
AGGRAVATE THE SITUATION. 

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ELMA...WEST 
SENECA...DEPEW...AND LANCASTER.

REMEMBER...EXCESSIVE RUNOFF FROM HEAVY RAINFALL CAN CAUSE FLOODING 
OF SMALL CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND 
UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

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.

LAT...LON 4271 7904 4273 7898 4275 7896 4275 7892
      4279 7887 4287 7888 4293 7854 4265 7857
      4262 7909

$$

SFM
000 
WGUS71 KBUF 101952
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
352 PM EDT SUN AUG 10 2008

NYC029-101959-
/O.CAN.KBUF.FF.W.0009.000000T0000Z-080810T2015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ERIE NY-
352 PM EDT SUN AUG 10 2008

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

AT 349 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE INTENSE 
RAIN BANDS WHICH DROPPED 2 TO 3 INCHES OF RAIN IN A SHORT TIME 
EARLIER TODAY ACROSS CENTRAL ERIE COUNTY HAVE WEAKENED. 
INSTEAD...LIGHT TO OCCASIONALLY MODERATE RAIN WILL CONTINUE INTO THE 
EVENING...BUT EXCESSIVE RAINS ARE NO LONGER EXPECTED. ADDITIONAL 
RAINFALL SHOULD BE IN THE ORDER OF ONE HALF INCH OR SO. 

SIGNIFICANT FLOODING IS NO LONGER EXPECTED...BUT PONDING IN LOW 
LYING AND POOR DRAINAGE AREAS WILL BE POSSIBLE FOR AWHILE LATE THIS 
AFTERNOON AND EVENING UNTIL THE WATER HAS TIME TO RUN OFF.

LAT...LON 4271 7904 4273 7898 4275 7896 4275 7892
      4279 7887 4287 7888 4293 7854 4265 7857
      4262 7909

$$

SFM

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 9, 8:19 PM EDTSevere Thunderstorm WarningBUFCattaraugus27 min
Aug 9, 8:20 PM EDTSpecial Marine WarningBUF40 min
Aug 9, 8:22 PM EDTSevere Thunderstorm WarningBUFChautauqua31 min
Aug 9, 8:33 PM EDTSpecial Marine WarningBUF57 min
Aug 9, 9:04 PM EDTSpecial Marine WarningBUF86 min
Aug 9, 9:32 PM EDTAreal Flood AdvisoryBUFChautauqua, Erie3 hr
Aug 10, 11:01 AM EDTSpecial Marine WarningBUF119 min
Aug 10, 11:18 AM EDTAreal Flood AdvisoryBUFErie117 min
Aug 10, 1:07 PM EDTSpecial Marine WarningBUF3 hr
Aug 10, 1:15 PM EDTSpecial Marine WarningBUF3 hr
Aug 10, 3:53 PM EDTSevere Thunderstorm WarningBUFWayne52 min
Aug 10, 3:56 PM EDTSevere Thunderstorm WarningBUFMonroe34 min
Aug 10, 4:08 PM EDTSpecial Marine WarningBUF82 min
Aug 10, 4:45 PM EDTSevere Thunderstorm WarningBUFCayuga, Wayne60 min
Aug 10, 5:49 PM EDTAreal Flood AdvisoryBUFCayuga3 hr
Aug 10, 6:26 PM EDTSevere Thunderstorm WarningBUFOntario49 min
Aug 10, 6:50 PM EDTAreal Flood AdvisoryBUFOswego3 hr
Aug 10, 6:53 PM EDTSevere Thunderstorm WarningBUFOswego45 min
Aug 10, 7:00 PM EDTSevere Thunderstorm WarningBUFWayne20 min
Aug 10, 7:11 PM EDTSpecial Marine WarningBUF85 min

Nearby

Flash Flood Warnings in New York, 2008Every flash flood warning in 2008

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.