Alert archive / New York / Flash Flood Warnings in 2021
Flash Flood Warning 23, NWS Buffalo, NY
NWS Buffalo, NY issued this flash flood warning at Sep 13, 2021, 12:25 AM EDT for Erie County, Genesee County, Wyoming County, New York. It was in force for 3 hr. 1 report 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
- Sep 13, 2021, 12:25 AM EDT (04:25 UTC)
- Expired
- Sep 13, 2021, 3:15 AM EDT
- In force
- 3 hr
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Flood severity
- None
Counties Erie County, NY, Genesee County, NY, Wyoming County, NY
The radar
The Buffalo radar (KBUF), 18 km from the middle of the area, began a volume at 04:30 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 |
|---|---|---|---|
| Sep 13, 12:30 AM EDT | FLASH FLOOD | 2 N Buffalo, NY | WATER FLOWING OVER SEVERAL ROADS NEAR DELAWARE PARK, UP TO THE BOTTOM OF CAR DOORS IN SOME LOCATIONS. |
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, 4.4 hours before the alert went out and 19 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
- 412 J/kg
- Mixed-layer CIN
- -125 J/kg
- Mixed-layer LCL
- 706 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 205 m²/s²
- 0-3 km storm-relative helicity
- 168 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.5
The text
As transmitted.
103
WGUS51 KBUF 130425
FFWBUF
NYC029-037-121-130830-
/O.NEW.KBUF.FF.W.0023.210913T0425Z-210913T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Buffalo NY
1225 AM EDT Mon Sep 13 2021
The National Weather Service in Buffalo has issued a
* Flash Flood Warning for...
Erie County in western New York...
Southwestern Genesee County in western New York...
Northwestern Wyoming County in western New York...
* Until 430 AM EDT.
* At 1225 AM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1 and 2 inches of rain
have fallen. Additional rainfall amounts of 0.5 to 1 inch are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Buffalo, Cheektowaga, West Seneca, North Tonawanda, Clarence,
Lackawanna, Kenmore, Depew, Amherst, Tonawanda, Lancaster,
Hamburg, East Aurora, Williamsville, Darien Lakes State Park,
Grand Island, Evans, Elma, Boston and Eden.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4258 7919 4272 7909 4276 7899 4280 7892
4284 7893 4292 7891 4296 7893 4297 7897
4303 7894 4302 7884 4303 7882 4303 7842
4257 7845
FLASH FLOOD...RADAR INDICATED
$$
AR1 follow-up statement
998
WGUS71 KBUF 130715
FFSBUF
Flash Flood Statement
National Weather Service Buffalo NY
315 AM EDT Mon Sep 13 2021
NYC029-037-121-130725-
/O.CAN.KBUF.FF.W.0023.000000T0000Z-210913T0830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Erie NY-Genesee NY-Wyoming NY-
315 AM EDT Mon Sep 13 2021
...FLASH FLOOD WARNING IS CANCELLED FOR ERIE, SOUTHWESTERN GENESEE
AND NORTHWESTERN WYOMING COUNTIES...
Flood waters continue to recede and the heavy rain from earlier has
ended. Flooding is no longer expected to pose a threat. Please
continue to heed remaining road closures.
LAT...LON 4258 7919 4272 7909 4276 7899 4280 7892
4284 7893 4292 7891 4296 7893 4297 7897
4303 7894 4302 7884 4303 7882 4303 7842
4257 7845
$$
JLAThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 12, 10:53 PM EDT | Special Marine Warning | BUF | 82 min | |
| Sep 12, 11:00 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Chautauqua, Erie | 75 min |
| Sep 12, 11:49 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus, Chautauqua, Erie, Livingston, Wyoming | 86 min |
| Sep 13, 12:09 AM EDT | Severe Thunderstorm Warning | BUF | Erie, Genesee, Wyoming | 66 min |
| Sep 13, 12:50 AM EDT | Severe Thunderstorm Warning | BUF | Livingston, Ontario | 55 min |
| Sep 13, 1:09 AM EDT | Special Weather Statement | BUF | Genesee, Monroe, Ontario, Wayne | 66 min |
Nearby
Flash Flood Warnings in New York, 2021Every flash flood warning in 2021
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.