Alert archive / New York / Flash Flood Warnings in 2023
Flash Flood Warning 13, NWS Buffalo, NY
NWS Buffalo, NY issued this flash flood warning at Aug 7, 2023, 9:09 PM EDT for Lewis County, Oswego County, New York. It was in force for 4 hr. 7 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
- Aug 7, 2023, 9:09 PM EDT (01:09 UTC)
- Expired
- Aug 8, 2023, 1:15 AM EDT
- In force
- 4 hr
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Flood severity
- None
Counties Lewis County, NY, Oswego County, NY
The radar
The Ft Drum radar (KTYX), 58 km from the middle of the area, began a volume at 01:11 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, 11:00 PM EDT | FLASH FLOOD | 3 Sw Williamstown, NY | Road flooded. |
| Aug 7, 11:00 PM EDT | FLASH FLOOD | 3 Sw Williamstown, NY | Road flooded. |
| Aug 7, 11:00 PM EDT | FLASH FLOOD | 3 Sw Williamstown, NY | Road flooded. |
| Aug 8, 12:00 AM EDT | FLASH FLOOD | 1 W Constableville, NY | Parts of Highmarket Road washed out. |
| Aug 8, 12:00 AM EDT | FLASH FLOOD | 1 W Constableville, NY | Parts of Highmarket Road washed out. |
| Aug 8, 12:00 AM EDT | FLASH FLOOD | 1 W Constableville, NY | Parts of Highmarket Road washed out. |
| Aug 8, 12:00 AM EDT | FLASH FLOOD | 2 Se Redfield, NY | Culvert washed out and road closed. |
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, 1.2 hours before the alert went out and 221 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
- 134 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 569 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
718
WGUS51 KBUF 080109
FFWBUF
NYC049-075-080515-
/O.NEW.KBUF.FF.W.0013.230808T0109Z-230808T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Buffalo NY
909 PM EDT Mon Aug 7 2023
The National Weather Service in Buffalo has issued a
* Flash Flood Warning for...
Southern Lewis County in central New York...
Southeastern Oswego County in central New York...
* Until 115 AM EDT.
* At 909 PM EDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between
2 and 3 inches of rain have fallen. Additional rainfall amounts of
1 to 2 inches are possible in the warned area. Flash flooding is
ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
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...
Central Square, Redfield, Highmarket, Whetstone Gulf State Park,
Constantia, West Monroe, Martinsburg, Williamstown, Lyonsdale,
Greig, Port Leyden, Lyons Falls, Constableville, Turin, Osceola,
North Osceola, Swancott Mill, Kasoag, Mohawk Hill and West Leyden.
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.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4323 7629 4380 7554 4358 7519 4342 7553
4348 7581 4332 7589 4332 7586 4325 7587
4319 7601 4320 7608 4322 7608 4327 7620
4324 7621 4322 7619 4321 7621 4321 7624
4324 7626 4324 7627 4322 7626 4320 7628
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
EAJ2 follow-up statements
706
WGUS71 KBUF 080251
FFSBUF
Flash Flood Statement
National Weather Service Buffalo NY
1051 PM EDT Mon Aug 7 2023
NYC049-075-080515-
/O.CON.KBUF.FF.W.0013.000000T0000Z-230808T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lewis NY-Oswego NY-
1051 PM EDT Mon Aug 7 2023
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 115 AM EDT TUESDAY
FOR SOUTHERN LEWIS AND SOUTHEASTERN OSWEGO COUNTIES...
At 1051 PM EDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across the warned area. Between 2
and 4 inches of rain have fallen. Additional rainfall amounts of 0.5
to 1 inch are possible in the warned area. Flash flooding is ongoing
or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Central Square, Redfield, Highmarket, Whetstone Gulf State Park,
Constantia, West Monroe, Martinsburg, Williamstown, Lyonsdale,
Greig, Port Leyden, Lyons Falls, Constableville, Turin, Osceola,
North Osceola, Swancott Mill, Kasoag, Mohawk Hill and West Leyden.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Be aware of your surroundings and do not drive on flooded roads.
&&
LAT...LON 4323 7629 4380 7554 4358 7519 4342 7553
4348 7581 4332 7589 4332 7586 4325 7587
4319 7601 4320 7608 4322 7608 4327 7620
4324 7621 4322 7619 4321 7621 4321 7624
4324 7626 4324 7627 4322 7626 4320 7628
FLASH FLOOD...RADAR AND GAUGE INDICATED
$$
JJR507
WGUS71 KBUF 080518
FFSBUF
Flash Flood Statement
National Weather Service Buffalo NY
118 AM EDT Tue Aug 8 2023
NYC049-075-080528-
/O.EXP.KBUF.FF.W.0013.000000T0000Z-230808T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lewis NY-Oswego NY-
118 AM EDT Tue Aug 8 2023
...FLASH FLOOD WARNING HAS EXPIRED FOR SOUTHERN LEWIS AND
SOUTHEASTERN OSWEGO COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 4323 7629 4380 7554 4358 7519 4342 7553
4348 7581 4332 7589 4332 7586 4325 7587
4319 7601 4320 7608 4322 7608 4327 7620
4324 7621 4322 7619 4321 7621 4321 7624
4324 7626 4324 7627 4322 7626 4320 7628
$$
TMAThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 7, 8:07 PM EDT | Tornado Warning | BUF | Lewis | 38 min |
| Aug 8, 7:01 PM EDT | Areal Flood Warning | BUF | Lewis | 14 hr |
Nearby
Flash Flood Warnings in New York, 2023Every flash flood warning in 2023
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.