Alert archive / New York / Flash Flood Warnings in 2021
Flash Flood Warning 5, NWS Buffalo, NY
NWS Buffalo, NY issued this flash flood warning at Jun 19, 2021, 7:07 PM EDT for Cattaraugus County, Erie County, New York. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 19, 2021, 7:07 PM EDT (23:07 UTC)
- Expired
- Jun 19, 2021, 10:06 PM EDT
- In force
- 3 hr
- Issued by
- NWS Buffalo, NY
- Area
- Storm-based polygon
- Flood severity
- None
Counties Cattaraugus County, NY, Erie County, NY
The radar
The Buffalo radar (KBUF), 56 km from the middle of the area, began a volume at 23:06 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.
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 11.1 hours before the alert went out and 54 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
- 120 J/kg
- Mixed-layer CIN
- -108 J/kg
- Mixed-layer LCL
- 1131 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- -48 m²/s²
- 0-3 km storm-relative helicity
- 16 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.2
The text
As transmitted.
456
WGUS51 KBUF 192307
FFWBUF
NYC009-029-200215-
/O.NEW.KBUF.FF.W.0005.210619T2307Z-210620T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Buffalo NY
707 PM EDT Sat Jun 19 2021
The National Weather Service in Buffalo has issued a
* Flash Flood Warning for...
Northeastern Cattaraugus County in western New York...
Southeastern Erie County in western New York...
* Until 1015 PM EDT.
* At 705 PM EDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 1.5 and 2.5 inches of
rain have fallen. Flash flooding is ongoing or expected to begin
shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Doppler radar.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
* Some locations that will experience flash flooding include...
Springville, Ashford Hollow, Yorkshire, Delevan, West Valley and
Lime Lake-Machias.
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 4246 7876 4248 7873 4252 7865 4254 7859
4252 7848 4244 7843 4240 7850 4238 7856
4236 7869 4240 7876
FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...0.5 INCHES IN 3 HOURS
$$
HSK2 follow-up statements
003
WGUS71 KBUF 200036
FFSBUF
Flash Flood Statement
National Weather Service Buffalo NY
836 PM EDT Sat Jun 19 2021
NYC009-029-200215-
/O.CON.KBUF.FF.W.0005.000000T0000Z-210620T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cattaraugus NY-Erie NY-
836 PM EDT Sat Jun 19 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT THIS
EVENING FOR NORTHEASTERN CATTARAUGUS AND SOUTHEASTERN ERIE
COUNTIES...
At 831 PM EDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 1.5 and 3 inches of rain have
fallen. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Doppler radar.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
Some locations that will experience flash flooding include...
Springville, Ashford Hollow, Yorkshire, Delevan, West Valley and
Lime Lake-Machias.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.
&&
LAT...LON 4246 7876 4248 7873 4252 7865 4254 7859
4252 7848 4244 7843 4240 7850 4238 7856
4236 7869 4240 7876
FLASH FLOOD...RADAR INDICATED
$$
HSK634
WGUS71 KBUF 200206
FFSBUF
Flash Flood Statement
National Weather Service Buffalo NY
1006 PM EDT Sat Jun 19 2021
NYC009-029-200216-
/O.CAN.KBUF.FF.W.0005.000000T0000Z-210620T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cattaraugus NY-Erie NY-
1006 PM EDT Sat Jun 19 2021
...FLASH FLOOD WARNING IS CANCELLED FOR NORTHEASTERN CATTARAUGUS AND
SOUTHEASTERN ERIE COUNTIES...
Flood waters have receded. The heavy rain has ended. Flooding is no
longer expected to pose a threat. Please continue to heed remaining
road closures.
LAT...LON 4246 7876 4248 7873 4252 7865 4254 7859
4252 7848 4244 7843 4240 7850 4238 7856
4236 7869 4240 7876
$$
HSKThe office that day
Everything else NWS Buffalo, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 1:18 PM EDT | Small Craft Advisory | BUF | 9 hr | |
| Jun 19, 4:36 PM EDT | Special Weather Statement | BUF | Allegany, Cattaraugus, Livingston | 54 min |
| Jun 19, 6:18 PM EDT | Special Weather Statement | BUF | Wyoming | 42 min |
| Jun 19, 6:45 PM EDT | Special Weather Statement | BUF | Allegany, Livingston, Wyoming | 60 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.