Alert archive / New York / Flash Flood Warnings in 2011
Flash Flood Warning 19, NWS Buffalo, NY
NWS Buffalo, NY issued this flash flood warning at Aug 19, 2011, 12:39 PM EDT for Allegany County, New York. It was in force for 110 min. 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 19, 2011, 12:39 PM EDT (16:39 UTC)
- Expired
- Aug 19, 2011, 2:29 PM EDT
- In force
- 110 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Flood severity
- None
County Allegany County, NY
The radar
The Buffalo radar (KBUF), 82 km from the middle of the area, began a volume at 16:42 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, 4.7 hours before the alert went out and 78 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
- 551 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 1064 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
618
WGUS51 KBUF 191639
FFWBUF
NYC003-191930-
/O.NEW.KBUF.FF.W.0019.110819T1639Z-110819T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BUFFALO NY
1239 PM EDT FRI AUG 19 2011
THE NATIONAL WEATHER SERVICE IN BUFFALO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHERN ALLEGANY COUNTY IN WESTERN NEW YORK...
* UNTIL 330 PM EDT
* AT 1228 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR
INDICATED FLASH FLOODING FROM THUNDERSTORMS ALONG A LINE
EXTENDING ALONG A LINE FROM FILLMORE TO 5 MILES NORTH OF BELFAST
MOVING EAST AT 15 MPH.
ROADS LEADING INTO RTE 19 IN THE VICINITY OF FILLMORE WERE UNDER THE
HEAVIEST RAINFALL.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN A VEHICLE TURN AROUND...DO NOT DROWN.
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.
&&
LAT...LON 4251 7822 4253 7815 4252 7784 4248 7784
4247 7772 4232 7773 4230 7820
$$
NIZIOL2 follow-up statements
869
WGUS71 KBUF 191714
FFSBUF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
114 PM EDT FRI AUG 19 2011
NYC003-191930-
/O.CON.KBUF.FF.W.0019.000000T0000Z-110819T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ALLEGANY NY-
114 PM EDT FRI AUG 19 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 330 PM EDT FOR
NORTHERN ALLEGANY COUNTY...
AT 105 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THAT THE HEAVIEST RAINFALL HAD MOVED SOUTH OF THE REGION. HOWEVER,
ESTIMATES OF MORE THAN 2 INCHES OF RAIN HAD OCCURRED OVER THE RUSH
CREEK AREA AROUND FILLMORE IN A LITTLE OVER ONE HOUR. THAT RAINFALL
WILL CONTINUE TO SWELL RUSH CREEK AND OTHER SMALLER TRIBUTARIES
LEADING TO FLOODING THROUGH 330 PM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EVEN THOUGH THE RAIN HAS ENDED EXCESSIVE RUNOFF FROM HEAVY RAINFALL
WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...AS
WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.
IF YOU ARE IN A VEHICLE TURN AROUND DON'T DROWN.
&&
LAT...LON 4251 7822 4253 7815 4252 7784 4248 7784
4247 7772 4232 7773 4230 7820
$$
NIZIOL779
WGUS71 KBUF 191829
FFSBUF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE BUFFALO NY
229 PM EDT FRI AUG 19 2011
NYC003-191836-
/O.CAN.KBUF.FF.W.0019.000000T0000Z-110819T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ALLEGANY NY-
229 PM EDT FRI AUG 19 2011
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR NORTHERN ALLEGANY
COUNTY...
AT 226 PM EDT NATIONAL WEATHER SERVICE RADAR SHOWED THAT THE
THUNDERSTORM THAT PROMPTED THE WARNING HAD EXITED THE AREA...THUS THE
FLOOD WARNING HAS BEEN CANCELLED.
RADAR ESTIMATED OF OVER 2 INCHES OF RAINFALL IN ONE HOUR OVER THE
RUSH CREEK BASIN NEAR FILLMORE FROM THESE STORMS. ALTHOUGH THE
STORMS HAVE EXITED THE AREA, DRIVERS ARE URGED TO USE CAUTION SINCE
RUNOFF CAN STILL CAUSE PONDING IN LOW LYING AREAS WELL AFTER
RAINFALL HAS ENDED.
LAT...LON 4251 7822 4253 7815 4252 7784 4248 7784
4247 7772 4232 7773 4230 7820
$$
NIZIOLThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 19, 12:13 AM EDT | Special Weather Statement | BUF | Cattaraugus | 62 min |
| Aug 19, 12:59 AM EDT | Special Weather Statement | BUF | Cattaraugus | 61 min |
| Aug 19, 12:08 PM EDT | Areal Flood Advisory | BUF | Allegany | 3 hr |
| Aug 19, 12:10 PM EDT | Severe Thunderstorm Warning | BUF | Allegany | 65 min |
| Aug 19, 1:15 PM EDT | Severe Thunderstorm Warning | BUF | Wyoming | 45 min |
| Aug 19, 2:20 PM EDT | Special Weather Statement | BUF | Livingston | 55 min |
| Aug 19, 3:50 PM EDT | Special Weather Statement | BUF | Allegany | 55 min |
| Aug 19, 3:51 PM EDT | Special Weather Statement | BUF | Allegany | 54 min |
| Aug 19, 4:06 PM EDT | Areal Flood Advisory | BUF | Allegany | 119 min |
| Aug 19, 5:55 PM EDT | Special Weather Statement | BUF | Ontario | 65 min |
| Aug 19, 6:23 PM EDT | Areal Flood Advisory | BUF | Livingston, Ontario | 97 min |
Nearby
Flash Flood Warnings in New York, 2011Every flash flood warning in 2011
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.