Alert archive / New York / Flash Flood Warnings in 2014

Flash Flood Warning 15, NWS Buffalo, NY

July 28, 2014Monroe County, Ontario County, New York

NWS Buffalo, NY issued this flash flood warning at Jul 28, 2014, 9:53 AM EDT for Monroe County, Ontario County, New York. It was in force for 6 hr. 3 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 28, 2014, 9:53 AM EDT (13:53 UTC)
Expired: Jul 28, 2014, 3:45 PM EDT
In force: 6 hr
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Flood severity: None

Counties Monroe County, NY, Ontario County, NY

The radar

The Buffalo radar (KBUF), 117 km from the middle of the area, began a volume at 13:54 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

Time	Report	Where	Remark
Jul 28, 10:30 AM EDT	FLASH FLOOD	Bristol, NY	PORTIONS OF EGYPT RD WASHED OUT.
Jul 28, 12:15 PM EDT	FLASH FLOOD	Gorham, NY	NUMEROUS ROADS CLOSED DUE TO FLOODING IN THE TOWN OF GORHAM
Jul 28, 3:38 PM EDT	FLASH FLOOD	Rushville, NY	FLOODING ACROSS HIGHWAYS ALONG WITH DAMAGE TO STATE ROADS. SEVERAL BASEMENTS NEEDED TO BE PUMPED OUT.

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, 1.9 hours before the alert went out and 114 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 66 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 605 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 52 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.

671 
WGUS51 KBUF 281353
FFWBUF
NYC055-069-281645-
/O.NEW.KBUF.FF.W.0015.140728T1353Z-140728T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
953 AM EDT MON JUL 28 2014

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTH CENTRAL MONROE COUNTY IN WESTERN NEW YORK...  
  ONTARIO COUNTY IN WESTERN NEW YORK...
  THIS INCLUDES THE CITY OF CANANDAIGUA...

* UNTIL 1245 PM EDT

* AT 945 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A 
  SLOW MOVING AREA OF HEAVY RAIN GRADUALLY SPREADING INTO CENTRAL    
  AND EASTERN PORTIONS OF ONTARIO COUNTY. THIS WILL PRODUCE FLASH    
  FLOODING IN PORTIONS OF THE WARNING AREA. STEEP TERRAIN ALONG THE  
  BRISTOL HILLS TENDS TO BE MOST VULNERABLE TO FLASH FLOODING.

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. HEAVY RAIN CAN ALSO PRODUCE 
WASHOUTS...ESPECIALLY ALONG ROADS WITH STEEP TERRAIN NEARBY.

&&

LAT...LON 4257 7740 4292 7752 4307 7772 4303 7737
      4300 7696 4277 7698 4275 7714 4276 7731
      4273 7734 4268 7734 4267 7736 4258 7736

$$

APFFEL

5 follow-up statements

103 
WGUS71 KBUF 281452
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1052 AM EDT MON JUL 28 2014

NYC055-069-281645-
/O.CON.KBUF.FF.W.0015.000000T0000Z-140728T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ONTARIO NY-MONROE NY-
1052 AM EDT MON JUL 28 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1245 PM EDT FOR
SOUTH CENTRAL MONROE AND ONTARIO COUNTIES...

AT 1041 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE HEAVY RAIN ACROSS ONTARIO COUNTY. THE AXIS OF HEAVIEST 
RAINS WILL CONTINUE TO BE CENTERED ACROSS CENTRAL AND EASTERN 
PORTIONS OF ONTARIO COUNTY THROUGH THE REMAINDER OF THE MORNING 
HOURS. RAINFALL RATES IN EXCESS OF AN INCH AN HOUR ARE EXPECTED 
DURING THIS TIME.

THE AREA MOST VULNERABLE TO FLASH FLOODING IS SOME OF THE STEEP 
TERRAIN LOCATED ACROSS THE BRISTOL HILLS AND ALONG CANANDAIGUA LAKE 
WHERE THERE ARE SEVERAL ROADWAYS PRONE TO WASHOUTS IN HEAVY RAINFALL.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BRISTOL...
VICTOR...PHELPS...GENEVA...CLIFTON SPRINGS AND CANANDAIGUA

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL 
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES.

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 4257 7740 4292 7752 4307 7772 4303 7737
      4300 7696 4277 7698 4275 7714 4276 7731
      4273 7734 4268 7734 4267 7736 4258 7736

$$

APFFEL

740 
WGUS51 KBUF 281635
FFWBUF
NYC055-069-281945-
/O.EXT.KBUF.FF.W.0015.000000T0000Z-140728T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1235 PM EDT MON JUL 28 2014

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  SOUTH CENTRAL MONROE COUNTY IN WESTERN NEW YORK...  
  ONTARIO COUNTY IN WESTERN NEW YORK...
  THIS INCLUDES THE CITY OF CANANDAIGUA...

* UNTIL 345 PM EDT

* AT 1224 PM EDT...THE NATIONAL WEATHER SERVICE HAS RECEIVED         
  NUMEROUS REPORTS OF ROAD CLOSURES AND WASHOUTS IN THE WARNED AREA. 
  MEANWHILE...MODERATE TO HEAVY RAIN WILL CONTINUE INTO THE EARLY    
  AFTERNOON HOURS...WITH UP TO AN INCH OF ADDITIONAL RAIN EXPECTED   
  ACROSS EASTERN PORTIONS OF ONTARIO COUNTY. 

* THE AREA MOST VULNERABLE TO FLASH FLOODING IS SOME OF THE STEEP    
  TERRAIN LOCATED ACROSS THE BRISTOL HILLS AND ALONG CANANDAIGUA     
  LAKE WHERE THERE ARE SEVERAL ROADWAYS PRONE TO WASHOUTS IN HEAVY   
  RAINFALL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL 
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. 

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 ONLY TAKES A FEW INCHES OF
SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.

&&

LAT...LON 4257 7740 4292 7752 4307 7772 4303 7737
      4300 7696 4277 7698 4275 7714 4276 7731
      4273 7734 4268 7734 4267 7736 4258 7736

$$

APFFEL

028 
WGUS71 KBUF 281758
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
158 PM EDT MON JUL 28 2014

NYC055-069-281945-
/O.CON.KBUF.FF.W.0015.000000T0000Z-140728T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ONTARIO NY-MONROE NY-
158 PM EDT MON JUL 28 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 PM EDT FOR 
SOUTHEASTERN MONROE AND ONTARIO COUNTIES...

AT 151 PM EDT...NATIONAL WEATHER SERVICE RADAR SHOWED RAIN GRADUALLY 
TAPERING OFF ACROSS ONTARIO COUNTY. ADDITIONAL RAINFALL THROUGH LATE 
AFTERNOON SHOULD BE LESS THAN A HALF INCH.

HOWEVER...HEAVER RAINS EARLIER TODAY HAS PRODUCED SIGNIFICANT FLASH 
FLOODING ACROSS THE WARNED AREA. THERE HAVE BEEN NUMEROUS REPORTS OF 
ROAD CLOSURES AND WASHOUTS...ESPECIALLY IN THE BRISTOL HILLS NEAR 
CANANDAIGUA LAKE AND HONEOYE LAKE...AS WELL AS THE TOWN OF GORHAM. 
ALSO...CREEKS AND STREAMS CAN TAKE SEVERAL HOURS TO CREST AFTER THE 
HEAVIEST RAINFALL. THOSE IN THE WARNING AREA SHOULD REMAIN ALERT FOR 
FLOODING...AND EXERCISE CAUTION WHEN TRAVELING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL 
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. 

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 4257 7740 4292 7752 4307 7772 4303 7737
      4300 7696 4277 7698 4275 7714 4276 7731
      4273 7734 4268 7734 4267 7736 4258 7736

$$

APFFEL

227 
WGUS71 KBUF 281847
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
247 PM EDT MON JUL 28 2014

NYC055-069-281945-
/O.CON.KBUF.FF.W.0015.000000T0000Z-140728T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ONTARIO NY-MONROE NY-
247 PM EDT MON JUL 28 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 345 PM EDT FOR
SOUTHEASTERN MONROE AND ONTARIO COUNTIES...

AT 246 PM EDT...NATIONAL WEATHER SERVICE RADAR SHOWED RAIN GRADUALLY 
TAPERING OFF ACROSS ONTARIO COUNTY. ADDITIONAL RAINFALL THROUGH LATE 
AFTERNOON SHOULD BE LESS THAN A QUARTER INCH.

HOWEVER...HEAVER RAINS EARLIER TODAY HAS PRODUCED SIGNIFICANT FLASH 
FLOODING ACROSS THE WARNED AREA. THERE HAVE BEEN NUMEROUS REPORTS OF 
ROAD CLOSURES AND WASHOUTS...ESPECIALLY IN THE BRISTOL HILLS NEAR 
CANANDAIGUA LAKE AND HONEOYE LAKE...AS WELL AS THE TOWN OF GORHAM. 
ALSO...CREEKS AND STREAMS CAN TAKE SEVERAL HOURS TO CREST AFTER THE 
HEAVIEST RAINFALL. THOSE IN THE WARNING AREA SHOULD REMAIN ALERT FOR 
FLOODING...AND EXERCISE CAUTION WHEN TRAVELING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL 
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. 

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 4257 7740 4292 7752 4305 7757 4303 7737
      4300 7696 4277 7698 4275 7714 4276 7731
      4273 7734 4268 7734 4267 7736 4258 7736

$$

APFFEL

795 
WGUS71 KBUF 281938
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
338 PM EDT MON JUL 28 2014

NYC055-069-281947-
/O.EXP.KBUF.FF.W.0015.000000T0000Z-140728T1945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ONTARIO NY-MONROE NY-
338 PM EDT MON JUL 28 2014

...THE FLASH FLOOD WARNING WILL EXPIRE AT 345 PM EDT FOR SOUTHEASTERN
MONROE AND ONTARIO COUNTIES...

PONDING OF LOW LYING AND POOR DRAINAGE AREAS WILL BE POSSIBLE FOR
AWHILE UNTIL THE WATER HAS TIME TO RUN OFF.

LAT...LON 4257 7740 4292 7752 4305 7757 4303 7737
      4300 7696 4277 7698 4275 7714 4276 7731
      4273 7734 4268 7734 4267 7736 4258 7736

$$

APFFEL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 27, 8:33 PM EDT	Special Marine Warning	BUF		42 min
Jul 27, 11:08 PM EDT	Special Weather Statement	BUF	Genesee, Niagara, Orleans	82 min
Jul 27, 11:26 PM EDT	Flash Flood Warning	BUF	Erie, Genesee, Niagara, Orleans	4 hr
Jul 27, 11:55 PM EDT	Flash Flood Warning	BUF	Erie, Genesee, Wyoming	3 hr
Jul 28, 12:27 AM EDT	Flash Flood Warning	BUF	Livingston, Ontario	4 hr
Jul 28, 12:52 AM EDT	Flash Flood Warning	BUF	Livingston, Monroe, Ontario, Wayne	4 hr
Jul 28, 7:22 AM EDT	Special Weather Statement	BUF	Erie, Genesee, Livingston, Monroe, Niagara, Orleans and 1 more	83 min
Jul 28, 8:45 AM EDT	Flash Flood Warning	BUF	Livingston, Monroe, Ontario	6 hr
Jul 28, 9:16 AM EDT	Special Weather Statement	BUF	Chautauqua, Erie, Wyoming	74 min
Jul 28, 10:28 AM EDT	Special Weather Statement	BUF	Wyoming	77 min
Jul 28, 11:13 AM EDT	Special Weather Statement	BUF	Monroe	47 min
Jul 28, 12:52 PM EDT	Areal Flood Advisory	BUF	Monroe	3 hr

Nearby

Flash Flood Warnings in New York, 2014 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.