Alert archive / New York / Flash Flood Warnings in 2016

Flash Flood Warning 3, NWS Buffalo, NY

June 20, 2016Erie County, Wyoming County, New York

NWS Buffalo, NY issued this flash flood warning at Jun 20, 2016, 11:20 PM EDT for Erie 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: Jun 20, 2016, 11:20 PM EDT (03:20 UTC)
Expired: Jun 21, 2016, 2:15 AM EDT
In force: 3 hr
Issued by: NWS Buffalo, NY
Area: Storm-based polygon
Flood severity: None

Counties Erie County, NY, Wyoming County, NY

The radar

The Buffalo radar (KBUF), 60 km from the middle of the area, began a volume at 03:24 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 00:00Z, 3.3 hours before the alert went out and 56 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: 874 J/kg
Mixed-layer CIN: -43 J/kg
Mixed-layer LCL: 1626 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 187 m²/s²
0-3 km storm-relative helicity: 223 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 4.7

Open this sounding in Storm Lab

The text

As transmitted.

787 
WGUS51 KBUF 210320
FFWBUF
NYC029-121-210615-
/O.NEW.KBUF.FF.W.0003.160621T0320Z-160621T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1120 PM EDT MON JUN 20 2016

THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN ERIE COUNTY IN WESTERN NEW YORK...
  WYOMING COUNTY IN WESTERN NEW YORK...

* UNTIL 215 AM EDT

* AT 1119 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS 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...
  LETCHWORTH STATE PARK...PERRY...WARSAW...ARCADE...CHAFFEE...
  PORTAGEVILLE...YORKSHIRE AND HOLLAND.

ADDITIONAL RAINFALL AMOUNTS OF ANOTHER INCH ARE POSSIBLE IN THE
WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. TURN ARUOND... DONT DROWN.

&&

LAT...LON 4252 7846 4254 7847 4252 7852 4252 7857
      4276 7857 4275 7795 4266 7797 4262 7799
      4260 7803 4260 7800 4258 7805 4257 7803
      4254 7806 4254 7805 4252 7804

$$

CHURCH

2 follow-up statements

919 
WGUS71 KBUF 210446
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1246 AM EDT TUE JUN 21 2016

NYC029-121-210615-
/O.CON.KBUF.FF.W.0003.000000T0000Z-160621T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ERIE NY-WYOMING NY-
1246 AM EDT TUE JUN 21 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 215 AM EDT FOR
SOUTHEASTERN ERIE AND WYOMING COUNTIES...

AT 1243 AM EDT...HEAVY THUNDERSTORMS HAVE SHIFTED EAST OF THE WARNED
AREA. RUNOFF FROM THESE STORMS CONTINUES AND THE THREAT OF FLOODING
CONTINUES. DOPPLER RADAR ESTIMATED BETWEEN 2 AND 3 INCHES OF RAIN
HAS FALLEN OVER PORTIONS OF SOUTHEASTERN ERIE COUNTY, AND CENTRAL
AND SOUTHERN WYOMING COUNTY.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
LETCHWORTH STATE PARK...PERRY...WARSAW...ARCADE...CHAFFEE...PORTAGEVILLE...
YORKSHIRE AND HOLLAND.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

&&

LAT...LON 4252 7846 4254 7847 4252 7852 4252 7857
      4276 7857 4275 7795 4266 7797 4262 7799
      4260 7803 4260 7800 4258 7805 4257 7803
      4254 7806 4254 7805 4252 7804

$$

THOMAS

995 
WGUS71 KBUF 210500
FFSBUF

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
100 AM EDT TUE JUN 21 2016

NYC029-121-210509-
/O.CAN.KBUF.FF.W.0003.000000T0000Z-160621T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ERIE NY-WYOMING NY-
100 AM EDT TUE JUN 21 2016

...THE FLASH FLOOD WARNING FOR SOUTHEASTERN ERIE AND WYOMING COUNTIES
IS CANCELLED...

THE HEAVY RAIN HAS ENDED. FLOODING IS NO LONGER EXPECTED TO POSE A
THREAT. PLEASE CONTINUE TO HEED ANY REMAINING ROAD CLOSURES.

LAT...LON 4252 7846 4254 7847 4252 7852 4252 7857
      4276 7857 4275 7795 4266 7797 4262 7799
      4260 7803 4260 7800 4258 7805 4257 7803
      4254 7806 4254 7805 4252 7804

$$

CHURCH

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 20, 8:57 PM EDT	Special Marine Warning	BUF		93 min
Jun 20, 9:04 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson	56 min
Jun 20, 9:20 PM EDT	Special Marine Warning	BUF		55 min
Jun 20, 9:26 PM EDT	Special Weather Statement	BUF	Erie	34 min
Jun 20, 9:30 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Niagara, Wyoming	45 min
Jun 20, 9:43 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	62 min
Jun 20, 9:53 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson	37 min
Jun 20, 10:11 PM EDT	Severe Thunderstorm Warning	BUF	Erie, Genesee, Livingston, Wyoming	49 min
Jun 20, 10:26 PM EDT	Severe Thunderstorm Warning	BUF	Jefferson, Lewis	64 min
Jun 20, 10:33 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	27 min
Jun 20, 10:36 PM EDT	Special Marine Warning	BUF		39 min
Jun 20, 10:39 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Livingston, Wyoming	51 min
Jun 20, 10:53 PM EDT	Severe Thunderstorm Warning	BUF	Oswego	52 min
Jun 20, 10:58 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Erie, Livingston, Wyoming	47 min
Jun 20, 11:13 PM EDT	Severe Thunderstorm Warning	BUF	Cayuga, Wayne	37 min
Jun 20, 11:34 PM EDT	Severe Thunderstorm Warning	BUF	Allegany, Cattaraugus, Livingston, Wyoming	41 min
Jun 20, 11:43 PM EDT	Severe Thunderstorm Warning	BUF	Livingston, Ontario	23 min
Jun 21, 12:15 AM EDT	Severe Thunderstorm Warning	BUF	Allegany	30 min

Nearby

Flash Flood Warnings in New York, 2016 Every flash flood warning in 2016

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.