Alert archive / New York / Flash Flood Warnings in 2015
Flash Flood Warning 5, NWS Buffalo, NY
NWS Buffalo, NY issued this flash flood warning at May 18, 2015, 9:03 PM EDT for Ontario County, New York. It was in force for 3 hr. 2 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
- May 18, 2015, 9:03 PM EDT (01:03 UTC)
- Expired
- May 19, 2015, 12:00 AM EDT
- In force
- 3 hr
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Flood severity
- None
County Ontario County, NY
The radar
The Binghamton radar (KBGM), 120 km from the middle of the area, began a volume at 01:02 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 |
|---|---|---|---|
| May 18, 9:37 PM EDT | FLASH FLOOD | 1 E Pre-Emption, NY | COUNTY RD AND RT6. |
| May 18, 9:37 PM EDT | FLASH FLOOD | 1 N Geneva, NY | RT14 IN GENEVA. |
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 00:00Z, 1.1 hours before the alert went out and 125 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.
- Mixed-layer CAPE
- 113 J/kg
- Mixed-layer CIN
- -83 J/kg
- Mixed-layer LCL
- 1013 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
799
WGUS51 KBUF 190103
FFWBUF
NYC069-190400-
/O.NEW.KBUF.FF.W.0005.150519T0103Z-150519T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
903 PM EDT MON MAY 18 2015
THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
THE SOUTHERN HALF OF ONTARIO COUNTY IN WESTERN NEW YORK...
* UNTIL MIDNIGHT EDT
* AT 901 PM EDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. DUAL POL DOPPLER RADAR
INDICATES THAT NEARLY AN INCH OF RAIN HAD FALLEN OVER THE WARNED
AREA BY 9 PM...AND AN ADIDTIONAL ONE TO TWO INCHES OF RAIN IS
EXPECTED. FLASH FLOODING IS LIKELY WITHIN THE HOUR.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
GENEVA...CANANDAIGUA...BRISTOL...BLOOMFIELD...RUSHVILLE...GORHAM...
EAST BLOOMFIELD AND BRISTOL MOUNTAIN.
THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...CANANDAIGUA
OUTLET...TROUT BROOK...PADELFORD BROOK...MUD CREEK...HONEOYE CREEK...
WILSON CREEK...BEBEE CREEK...DEEP RUN...ROCKY RUN...FLINT CREEK...
MILL CREEK...BURRELL CREEK...SUCKER BROOK...FRESHOUR CREEK AND BEAVER
CREEK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
&&
LAT...LON 4291 7748 4291 7697 4287 7696 4287 7698
4286 7698 4284 7697 4276 7697 4276 7731
4273 7734 4273 7747
$$
RSH2 follow-up statements
415
WGUS71 KBUF 190231
FFSBUF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1031 PM EDT MON MAY 18 2015
NYC069-190400-
/O.CON.KBUF.FF.W.0005.000000T0000Z-150519T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ONTARIO NY-
1031 PM EDT MON MAY 18 2015
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EDT FOR
CENTRAL ONTARIO COUNTY...
AT 1027 PM EDT...DOPPLER RADAR INDICATED THAT THE HEAVY DOWNPOURS
AND THUNDERSTORMS HAVE PUSHED AWAY TO THE EAST. WHILE THE HEAVIEST
RAIN HAS MOVED OUT OF THE AREA...THERE WILL STILL BE HIGH AND FAST
RUNNING TRIBUTARIES.
RADAR ESTIMATED THAT ONE TO TWO INCHES OF RAIN FELL OVER THE
MAJORITY OF THE WARNED AREA...WITH AMOUNTS IN EXCESS OF THREE INCHES
FAIRLY COMMON OVER THE BURRELL...WILSON AND FLINT CREEK BASINS. THE
GOOD NEWS IS THAT LITTLE IF ANY ADDITIONAL RAINFALL IS EXPECTED
OVERNIGHT.
SOME LOCATIONS THAT COULD STILL EXPERIENCE FLOODING INCLUDE...
GENEVA...CANANDAIGUA...BRISTOL...BLOOMFIELD...RUSHVILLE...GORHAM...
EAST BLOOMFIELD AND BRISTOL MOUNTAIN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
&&
LAT...LON 4291 7748 4291 7697 4287 7696 4287 7698
4286 7698 4284 7697 4276 7697 4276 7731
4273 7734 4273 7747
$$
RSH476
WGUS71 KBUF 190338
FFSBUF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
1138 PM EDT MON MAY 18 2015
NYC069-190347-
/O.CAN.KBUF.FF.W.0005.000000T0000Z-150519T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ONTARIO NY-
1138 PM EDT MON MAY 18 2015
...THE FLASH FLOOD WARNING FOR CENTRAL ONTARIO COUNTY IS CANCELLED...
FLOOD WATERS ARE RECEDING...AND ARE NO LONGER EXPECTED TO POSE A
THREAT TO LIFE OR PROPERTY. PLEASE CONTINUE TO HEED ANY ROAD
CLOSURES.
LAT...LON 4291 7748 4291 7697 4287 7696 4287 7698
4286 7698 4284 7697 4276 7697 4276 7731
4273 7734 4273 7747
$$
RSHThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 18, 8:11 PM EDT | Severe Thunderstorm Warning | BUF | Allegany | 22 min |
| May 18, 8:27 PM EDT | Special Weather Statement | BUF | Livingston | 33 min |
| May 18, 8:40 PM EDT | Flash Flood Warning | BUF | Allegany, Livingston, Ontario | 3 hr |
Nearby
Flash Flood Warnings in New York, 2015Every flash flood warning in 2015
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.