Alert archive / New York / Flash Flood Warnings in 2014

Flash Flood Warning 22, NWS Buffalo, NY

August 5, 2014Livingston County, New York

NWS Buffalo, NY issued this flash flood warning at Aug 5, 2014, 3:36 PM EDT for Livingston 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 5, 2014, 3:36 PM EDT (19:36 UTC)
Expired
Aug 5, 2014, 6:30 PM EDT
In force
3 hr
Issued by
NWS Buffalo, NY
Area
Storm-based polygon
Flood severity
None

County Livingston County, NY

The radar

The Buffalo radar (KBUF), 94 km from the middle of the area, began a volume at 19:37 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, 7.6 hours before the alert went out and 90 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 2014-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 429 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 2014-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 13 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
429 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
837 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
13 m²/s²
0-3 km storm-relative helicity
68 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

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

071 
WGUS51 KBUF 051936
FFWBUF
NYC051-052230-
/O.NEW.KBUF.FF.W.0022.140805T1936Z-140805T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
336 PM EDT TUE AUG 5 2014

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN LIVINGSTON COUNTY IN WESTERN NEW YORK...
  THIS INCLUDES THE CITY OF DANSVILLE...
  THIS ALSO INCLUDES THE VILLAGE OF SPARTA AND WEST SPARTA
* UNTIL 630 PM EDT

* AT 332 PM EDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLASH   
FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA. ROADS COVERED BY 
WATER INCLUDE ROUTE 36 AND ROUTE 63 IN THE TOWNS OF SPARTA AND WEST 
SPARTA. ADDITIONAL RAINFALL AND RUNOFF THIS AFTERNOON AND EARLY 
EVENING MAY CREATE FURTHER HYDROLOGIC PROBLEMS ACROSS THE WARNED 
AREA. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL RAINFALL AMOUNTS OF A QUARTER TO THREE QUARTERS OF AN 
INCH OF RAIN ARE POSSIBLE IN THE WARNED AREA.

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.

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 4248 7784 4252 7785 4252 7791 4274 7783
      4274 7761 4267 7759 4266 7748 4258 7749
      4257 7765 4253 7767 4253 7771 4247 7772

$$

THOMAS
2 follow-up statements
961 
WGUS71 KBUF 052118
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
518 PM EDT TUE AUG 5 2014

NYC051-052230-
/O.CON.KBUF.FF.W.0022.000000T0000Z-140805T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LIVINGSTON NY-
518 PM EDT TUE AUG 5 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM EDT FOR
SOUTHEASTERN LIVINGSTON COUNTY...

AT 506 PM EDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED  
THUNDERSTORMS PRODUCING FLASH FLOODING OVER THE WARNED AREA. REPORTED 
ROADS THAT ARE COVERED BY WATER AND WASHED OUT INCLUDE ROUTE 36 IN 
THE TOWN OF WEST SPARTA AND ROUTE 63 IN THE TOWN OF SPARTA. NATIONAL 
WEATHER SERVICE DOPPLER RADAR DISPLAYS ADDITIONAL RAINFALL OF A 
THIRD TO TWO THIRDS OF AN INCH PASSING ACROSS THE WARNED AREA THIS 
LATE AFTERNOON. 

EXPECT SMALL CREEKS AND STREAMS IN THE AREA TO ALSO RISE NEAR AND 
POSSIBLY OVER BANKFULL. STREAMS AND CREEKS WILL CONTINUE TO RISE 
EVEN AFTER THE HEAVY RAINFALL HAS ENDED.  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

&&

LAT...LON 4248 7784 4252 7785 4252 7791 4274 7783
      4274 7761 4267 7759 4266 7748 4258 7749
      4257 7765 4253 7767 4253 7771 4247 7772

$$

THOMAS
633 
WGUS71 KBUF 052227
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
627 PM EDT TUE AUG 5 2014

NYC051-052237-
/O.EXP.KBUF.FF.W.0022.000000T0000Z-140805T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LIVINGSTON NY-
627 PM EDT TUE AUG 5 2014

...THE FLASH FLOOD WARNING WILL EXPIRE AT 630 PM EDT FOR SOUTHEASTERN
LIVINGSTON COUNTY...

THE FLOODING HAS RECEDED...THUS THE FLOOD WARNING HAS BEEN ALLOWED TO
EXPIRE.

LAT...LON 4248 7784 4252 7785 4252 7791 4274 7783
      4274 7761 4267 7759 4266 7748 4258 7749
      4257 7765 4253 7767 4253 7771 4247 7772

$$

THOMAS

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 2:22 PM EDTSpecial Weather StatementBUFCattaraugus38 min
Aug 5, 2:59 PM EDTSpecial Weather StatementBUFCattaraugus61 min
Aug 5, 3:48 PM EDTAreal Flood AdvisoryBUFAllegany, Cattaraugus, Erie, Wyoming3 hr
Aug 5, 4:13 PM EDTFlash Flood WarningBUFAllegany, Cattaraugus, Erie, Livingston, Wyoming3 hr
Aug 5, 7:31 PM EDTSpecial Weather StatementBUFLewis29 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.