Alert archive / New York / Flash Flood Warnings in 2018
Flash Flood Warning 11, NWS Buffalo, NY
NWS Buffalo, NY issued this flash flood warning at Jul 24, 2018, 7:08 PM EDT for Chautauqua County, New York. It was in force for 4 hr. 5 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
- Jul 24, 2018, 7:08 PM EDT (23:08 UTC)
- Expired
- Jul 24, 2018, 10:56 PM EDT
- In force
- 4 hr
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Flood severity
- None
County Chautauqua County, NY
The radar
The Buffalo radar (KBUF), 77 km from the middle of the area, began a volume at 23:07 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 |
|---|---|---|---|
| Jul 24, 7:20 PM EDT | HEAVY RAIN 2.16 | 1 Wnw Fredonia, NY | 2.16 INCHES IN 90 MINUTES |
| Jul 24, 7:50 PM EDT | FLASH FLOOD | Fredonia, NY | PORTIONS OF: ORCHARD ST., LAMBERT AVE., RYAN PL., ROSALYN CT., AND E. MAIN ST. CLOSED DUE TO FLOODING |
| Jul 24, 7:53 PM EDT | HEAVY RAIN 2.17 | Dunkirk Airport, NY | 3 HOUR RAINFALL WITH 1.66 INCHES IN ONE HOUR |
| Jul 24, 9:43 PM EDT | FLASH FLOOD | 1 Nnw Fredonia, NY | SIGNIFICANT FLOODING AT CHAUTAUQUA COUNTY FAIRGROUNDS |
| Jul 24, 9:43 PM EDT | FLASH FLOOD | 1 Nnw Fredonia, NY | WALDORFF RD FLOODED AND IMPASSABLE |
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, 11.1 hours before the alert went out and 78 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
- 207 J/kg
- Mixed-layer CIN
- -53 J/kg
- Mixed-layer LCL
- 1037 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 100 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.0
The text
As transmitted.
871
WGUS51 KBUF 242308
FFWBUF
NYC013-250200-
/O.NEW.KBUF.FF.W.0011.180724T2308Z-180725T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Buffalo NY
708 PM EDT TUE JUL 24 2018
The National Weather Service in Buffalo has issued a
* Flash Flood Warning for...
Northeastern Chautauqua County in western New York...
* Until 1000 PM EDT.
* At 707 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Up to two inches of rain have
already fallen. Flash flooding is expected to begin shortly.
* Some locations that will experience flooding include...
Dunkirk, Fredonia, Mayville, Lake Erie State Park, SUNY Fredonia,
Sheridan, Stockton and Brocton.
Additional rainfall amounts of one to one and a half inches are
possible in the warned area.
This includes Interstate 90 near exit 59.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4252 7941 4254 7935 4252 7918 4222 7930
4223 7950
$$
Smith3 follow-up statements
278
WGUS71 KBUF 250007
FFSBUF
Flash Flood Statement
National Weather Service Buffalo NY
807 PM EDT TUE JUL 24 2018
NYC013-250200-
/O.CON.KBUF.FF.W.0011.000000T0000Z-180725T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Chautauqua NY-
807 PM EDT TUE JUL 24 2018
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1000 PM EDT FOR
NORTHEASTERN CHAUTAUQUA COUNTY...
At 803 PM EDT, local law enforcement reported flash flooding with
numerous road closures across the warned area. Two to three inches
of rain have already fallen. Flash flooding is already occurring.
Some locations that will experience flooding include...
Dunkirk, Fredonia, Mayville, Lake Erie State Park, SUNY Fredonia,
Sheridan, Stockton and Brocton.
This includes Interstate 90 near exit 59.
Flash flooding is also possible in the following creek basins which
received the torrential rains...
Hyde Creek, Canadaway Creek and Beaver Creek around Dunkirk.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4252 7941 4254 7935 4252 7918 4222 7930
4223 7950
$$
Smith300
WGUS51 KBUF 250142
FFWBUF
NYC013-250400-
/O.EXT.KBUF.FF.W.0011.000000T0000Z-180725T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Buffalo NY
942 PM EDT TUE JUL 24 2018
The National Weather Service in Buffalo has extended the
* Flash Flood Warning for...
Northeastern Chautauqua County in western New York...
* Until midnight EDT.
* At 940 PM EDT, trained spotters reported heavy rain and flooding
across the warned area. Two to three inches of rain have already
fallen, with some additional rain expected through late evening.
Flash flooding is already occurring.
* Some locations that will experience flooding include...
Dunkirk, Fredonia, Mayville, Lake Erie State Park, SUNY Fredonia,
Sheridan, Stockton and Brocton.
This includes Interstate 90 near exit 59.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4252 7941 4254 7935 4252 7918 4222 7930
4223 7950
$$
Hitchcock204
WGUS71 KBUF 250256
FFSBUF
Flash Flood Statement
National Weather Service Buffalo NY
1056 PM EDT TUE JUL 24 2018
NYC013-250306-
/O.CAN.KBUF.FF.W.0011.000000T0000Z-180725T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Chautauqua NY-
1056 PM EDT TUE JUL 24 2018
...THE FLASH FLOOD WARNING FOR NORTHEASTERN CHAUTAUQUA COUNTY IS
CANCELLED...
Trained spotters report flood waters have receded. Flooding is no
longer expected to pose a threat. Please continue to heed any
remaining road closures.
LAT...LON 4252 7941 4254 7935 4252 7918 4222 7930
4223 7950
$$
HitchcockThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 2:50 PM EDT | Special Weather Statement | BUF | Oswego | 55 min |
| Jul 24, 6:50 PM EDT | Special Weather Statement | BUF | Chautauqua | 55 min |
Nearby
Flash Flood Warnings in New York, 2018Every flash flood warning in 2018
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.