Alert archive / New York / Flash Flood Warnings in 2021
Flash Flood Warning 17, NWS Buffalo, NY
NWS Buffalo, NY issued this flash flood warning at Aug 7, 2021, 6:29 PM EDT for Livingston County, Monroe County, New York. It was in force for 94 min. 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
- Aug 7, 2021, 6:29 PM EDT (22:29 UTC)
- Expired
- Aug 7, 2021, 8:03 PM EDT
- In force
- 94 min
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Flood severity
- None
Counties Livingston County, NY, Monroe County, NY
The radar
The Buffalo radar (KBUF), 83 km from the middle of the area, began a volume at 22:33 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 |
|---|---|---|---|
| Aug 7, 7:02 PM EDT | FLASH FLOOD | 2 Ssw Scottsville, NY | SOUTH ROAD AND BOWERMAN ROAD AREAS CLOSED DUE TO WATER OVER ROADWAY. |
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, 10.5 hours before the alert went out and 80 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
- 54 J/kg
- Mixed-layer CIN
- -138 J/kg
- Mixed-layer LCL
- 1411 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
548
WGUS51 KBUF 072229
FFWBUF
NYC051-055-080130-
/O.NEW.KBUF.FF.W.0017.210807T2229Z-210808T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Buffalo NY
629 PM EDT Sat Aug 7 2021
The National Weather Service in Buffalo has issued a
* Flash Flood Warning for...
North Central Livingston County in western New York...
South Central Monroe County in western New York...
* Until 930 PM EDT.
* At 629 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain in excess of 2 inches 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...
Henrietta, Avon, Scottsville, Rush, Martin, Industry and Garbutt.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4300 7783 4301 7783 4305 7768 4308 7761
4302 7754 4292 7773
FLASH FLOOD...RADAR INDICATED
$$
RSH1 follow-up statement
078
WGUS71 KBUF 080003
FFSBUF
Flash Flood Statement
National Weather Service Buffalo NY
803 PM EDT Sat Aug 7 2021
NYC051-055-080013-
/O.CAN.KBUF.FF.W.0017.000000T0000Z-210808T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Livingston NY-Monroe NY-
803 PM EDT Sat Aug 7 2021
...FLASH FLOOD WARNING IS CANCELLED FOR NORTH CENTRAL LIVINGSTON AND
SOUTH CENTRAL MONROE COUNTIES...
Flooding is no longer expected to pose a threat. Please continue to
heed remaining road closures.
LAT...LON 4300 7783 4301 7783 4305 7768 4308 7761
4302 7754 4292 7773
$$
RSHThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 2:56 PM EDT | Special Marine Warning | BUF | 94 min | |
| Aug 7, 4:26 PM EDT | Special Marine Warning | BUF | 94 min | |
| Aug 7, 6:03 PM EDT | Special Weather Statement | BUF | Monroe | 42 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.