Alert archive / New York / Flash Flood Warnings in 2024
Flash Flood Warning 18, NWS Buffalo, NY
NWS Buffalo, NY issued this flash flood warning at Sep 6, 2024, 9:43 PM EDT for Cattaraugus County, New York. It was in force for 2 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 6, 2024, 9:43 PM EDT (01:43 UTC)
- Expired
- Sep 6, 2024, 11:59 PM EDT
- In force
- 2 hr
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Flood severity
- None
County Cattaraugus County, NY
The radar
The Buffalo radar (KBUF), 100 km from the middle of the area, began a volume at 01:42 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 6, 9:51 PM EDT | FLASH FLOOD | Olean, NY | Buffalo St closed due to flooding. |
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, 1.7 hours before the alert went out and 97 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
- 209 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 725 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.1
The text
As transmitted.
445
WGUS51 KBUF 070143
FFWBUF
NYC009-070545-
/O.NEW.KBUF.FF.W.0018.240907T0143Z-240907T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Buffalo NY
943 PM EDT Fri Sep 6 2024
The National Weather Service in Buffalo has issued a
* Flash Flood Warning for...
Southeastern Cattaraugus County in western New York...
* Until 145 AM EDT.
* At 943 PM 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...
Olean, Salamanca, Allegany State Park, Allegany, St. Bonaventure,
Weston Mills, Hinsdale, Carrollton, Vandalia, Limestone, Knapp
Creek, Kill Buck and Rock City Park.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 4218 7833 4200 7844 4200 7851 4200 7855
4200 7860 4200 7875 4200 7884 4217 7875
FLASH FLOOD...RADAR INDICATED
$$
Apffel2 follow-up statements
871
WGUS71 KBUF 070254
FFSBUF
Flash Flood Statement
National Weather Service Buffalo NY
1054 PM EDT Fri Sep 6 2024
NYC009-070545-
/O.CON.KBUF.FF.W.0018.000000T0000Z-240907T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cattaraugus NY-
1054 PM EDT Fri Sep 6 2024
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 145 AM EDT SATURDAY
FOR SOUTHEASTERN CATTARAUGUS COUNTY...
At 1054 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1.5 and 2.5 inches of
rain have fallen. Additional rainfall amounts up to 0.25 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Olean, Allegany State Park, Allegany, St. Bonaventure, Weston
Mills, Hinsdale, Vandalia, Rock City Park, Knapp Creek and
Limestone.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.
&&
LAT...LON 4200 7856 4200 7860 4200 7865 4204 7866
4216 7859 4218 7833 4200 7844 4200 7855
FLASH FLOOD...RADAR INDICATED
$$
Apffel381
WGUS71 KBUF 070359
FFSBUF
Flash Flood Statement
National Weather Service Buffalo NY
1159 PM EDT Fri Sep 6 2024
NYC009-070409-
/O.CAN.KBUF.FF.W.0018.000000T0000Z-240907T0545Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cattaraugus NY-
1159 PM EDT Fri Sep 6 2024
...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHEASTERN CATTARAUGUS
COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
&&
LAT...LON 4200 7856 4200 7860 4200 7865 4204 7866
4216 7859 4218 7833 4200 7844 4200 7855
$$
ARThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 6, 8:16 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus | 59 min |
| Sep 6, 9:49 PM EDT | Tornado Warning | BUF | Allegany | 28 min |
| Sep 7, 5:01 AM EDT | Beach Hazards Statement | BUF | Cayuga, Chautauqua, Erie, Jefferson, Monroe, Niagara and 3 more | 66 hr |
| Sep 7, 7:41 AM EDT | Special Marine Warning | BUF | 22 min | |
| Sep 7, 8:57 AM EDT | Special Marine Warning | BUF | 63 min | |
| Sep 7, 2:27 PM EDT | Special Marine Warning | BUF | 93 min | |
| Sep 7, 7:34 PM EDT | Special Marine Warning | BUF | 86 min |
Nearby
Flash Flood Warnings in New York, 2024Every flash flood warning in 2024
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.