Alert archive / New York / Flash Flood Warnings in 2025
Flash Flood Warning 1, NWS Buffalo, NY
NWS Buffalo, NY issued this flash flood warning at Apr 21, 2025, 6:19 PM EDT for Cattaraugus County, Chautauqua County, New York. It was in force for 3 hr. 4 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
- Apr 21, 2025, 6:19 PM EDT (22:19 UTC)
- Expired
- Apr 21, 2025, 9:20 PM EDT
- In force
- 3 hr
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Flood severity
- None
Counties Cattaraugus County, NY, Chautauqua County, NY
The radar
The Buffalo radar (KBUF), 91 km from the middle of the area, began a volume at 22:21 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 |
|---|---|---|---|
| Apr 21, 6:30 PM EDT | FLOOD | 1 Sw Bemus Point, NY | Delayed report. Road 394 in Stow closed due to flooding and debris. |
| Apr 21, 6:33 PM EDT | FLOOD | 1 Ssw Gerry, NY | Delayed report. Significant flooding on Road 380 near the Gerry and Ellicott town line. |
| Apr 21, 7:00 PM EDT | FLOOD | 3 S Gerry, NY | Delayed report. Route 60 near the Jamestown airport closed due to flooding and debris. |
| Apr 21, 7:05 PM EDT | FLASH FLOOD | Ellington, NY | Multiple roads closed in the Town of Ellington. |
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 12:00Z, 10.3 hours before the alert went out and 91 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1489 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 366 m²/s²
- 0-3 km storm-relative helicity
- 423 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
480
WGUS51 KBUF 212219
FFWBUF
NYC009-013-220230-
/O.NEW.KBUF.FF.W.0001.250421T2219Z-250422T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Buffalo NY
Issued by National Weather Service Cleveland OH
619 PM EDT Mon Apr 21 2025
The National Weather Service in Buffalo has issued a
* Flash Flood Warning for...
West Central Cattaraugus County in western New York...
Southeastern Chautauqua County in western New York...
* Until 1030 PM EDT.
* At 619 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across 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...
Jamestown, Lakewood, Falconer, Jamestown West, Long Point State
Park, Busti, Gerry, Conewango, Ellington, Leon, Randolph, Napoli,
Celoron, South Dayton, East Randolph, Sinclairville, Panama,
Cherry Creek, Bemus Point and Kennedy.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Flooding is occurring or is imminent. It is important to know where
you are relative to streams, rivers, or creeks which can become
killers in heavy rains. Campers and hikers should avoid streams or
creeks.
&&
LAT...LON 4238 7900 4221 7882 4212 7906 4200 7938
4202 7962 4212 7959 4235 7906
FLASH FLOOD...RADAR INDICATED
$$
Apffel1 follow-up statement
757
WGUS71 KBUF 220120
FFSBUF
Flash Flood Statement
National Weather Service Buffalo NY
Issued by National Weather Service Cleveland OH
920 PM EDT Mon Apr 21 2025
NYC009-013-220130-
/O.CAN.KBUF.FF.W.0001.000000T0000Z-250422T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cattaraugus NY-Chautauqua NY-
920 PM EDT Mon Apr 21 2025
...FLASH FLOOD WARNING IS CANCELLED FOR WEST CENTRAL CATTARAUGUS AND
SOUTHEASTERN CHAUTAUQUA COUNTIES...
The heavy rain has ended. Flooding is ongoing in central Chautauqua
county. Please continue to heed remaining road closures.
&&
LAT...LON 4238 7900 4221 7882 4212 7906 4200 7938
4202 7962 4212 7959 4235 7906
$$
HSKThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 1:05 AM EDT | Wind Advisory | BUF | Chautauqua | 12 hr |
| Apr 21, 1:34 PM EDT | Small Craft Advisory | BUF | 33 hr | |
| Apr 21, 4:34 PM EDT | Special Marine Warning | BUF | 86 min | |
| Apr 21, 5:08 PM EDT | Special Weather Statement | BUF | Orleans | 37 min |
| Apr 21, 5:19 PM EDT | Special Marine Warning | BUF | 56 min | |
| Apr 21, 5:23 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus, Erie, Wyoming | 34 min |
| Apr 21, 5:33 PM EDT | Tornado Warning | BUF | Allegany, Cattaraugus, Erie, Wyoming | 27 min |
| Apr 21, 5:53 PM EDT | Severe Thunderstorm Warning | BUF | Cattaraugus, Chautauqua, Erie, Genesee, Niagara, Orleans and 1 more | 67 min |
| Apr 21, 6:03 PM EDT | Areal Flood Warning | BUF | Erie, Niagara | 95 min |
| Apr 21, 6:11 PM EDT | Special Marine Warning | BUF | 64 min | |
| Apr 21, 6:41 PM EDT | Severe Thunderstorm Warning | BUF | Allegany, Cattaraugus, Erie, Wyoming | 58 min |
Nearby
Flash Flood Warnings in New York, 2025Every flash flood warning in 2025
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.