Alert archive / New York / Flash Flood Warnings in 2021
Flash Flood Warning 45, NWS Binghamton, NY
NWS Binghamton, NY issued this flash flood warning at Aug 17, 2021, 8:59 PM EDT for 4 counties in New York. It was in force for 3 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
- Aug 17, 2021, 8:59 PM EDT (00:59 UTC)
- Expired
- Aug 18, 2021, 12:00 AM EDT
- In force
- 3 hr
- Issued by
- NWS Binghamton, NY
- Area
- Storm-based polygon
- Flood severity
- None
Counties Cayuga County, NY, Cortland County, NY, Onondaga County, NY, Tompkins County, NY
The radar
The Binghamton radar (KBGM), 59 km from the middle of the area, began a volume at 00:59 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 17, 9:14 PM EDT | FLASH FLOOD | Preble, NY | MULTIPLE ROADS FLOODED IN HOMER/PREBLE AREA. |
| Aug 17, 9:56 PM EDT | FLASH FLOOD | Truxton, NY | STREET FLOODING, DEBRIS IN ROAD. |
| Aug 17, 10:26 PM EDT | HEAVY RAIN 5 | Preble, NY | FLOODED TRAILER PARK. |
| Aug 17, 10:27 PM EDT | FLASH FLOOD | 5 Sw Preble, NY | FLOODED TRAILER PARK. |
| Aug 17, 10:31 PM EDT | FLASH FLOOD | 3 Nw Preble, NY | STREET FLOODING, TREES DOWN SONG MOUNTAIN RD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Albany, NY (KALY), launched 00:00Z, 1.0 hours before the alert went out and 197 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
- 19 J/kg
- Mixed-layer CIN
- -56 J/kg
- Mixed-layer LCL
- 756 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 113 m²/s²
- 0-3 km storm-relative helicity
- 164 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
270
WGUS51 KBGM 180059
FFWBGM
NYC011-023-067-109-180400-
/O.NEW.KBGM.FF.W.0045.210818T0059Z-210818T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Binghamton NY
859 PM EDT Tue Aug 17 2021
The National Weather Service in Binghamton has issued a
* Flash Flood Warning for...
Cayuga County in central New York...
Northern Cortland County in central New York...
Southeastern Onondaga County in central New York...
Northeastern Tompkins County in central New York...
* Until midnight EDT.
* At 859 PM EDT, Doppler radar 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.
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...
Pompey, Homer, Otisco, Groton, Locke, Genoa, Preble, Moravia,
Scott, Truxton, Cuyler, Sempronius, Tully, Fabius, Kelloggsville,
Montville, East Homer, La Fayette, Cascade and King Ferry.
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.
&&
LAT...LON 4264 7666 4266 7667 4284 7626 4294 7603
4290 7596 4285 7593 4277 7591 4274 7591
4271 7592 4269 7596 4266 7602 4265 7607
4264 7610 4263 7615 4260 7629 4256 7648
4255 7658 4259 7663 4261 7665
FLASH FLOOD...RADAR INDICATED
$$
MPH2 follow-up statements
460
WGUS71 KBGM 180158
FFSBGM
Flash Flood Statement
National Weather Service Binghamton NY
958 PM EDT Tue Aug 17 2021
NYC011-023-067-109-180400-
/O.CON.KBGM.FF.W.0045.000000T0000Z-210818T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cayuga NY-Cortland NY-Onondaga NY-Tompkins NY-
958 PM EDT Tue Aug 17 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT
FOR CAYUGA, NORTHERN CORTLAND, SOUTHEASTERN ONONDAGA AND
NORTHEASTERN TOMPKINS COUNTIES...
At 958 PM EDT, The heaviest rainfall has mainly shifted east of the
I-81 corridor, with lighter rain expected to continue for another
hour or so. Runoff will continue to produce flooding issues west of
I-81, while another quick inch or so of rain is still possible in
eastern portions of the warning area in the next 45 minutes. Law
enforcement has reported widespread road flooding in the region.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Pompey, Homer, Otisco, Groton, Locke, Preble, Moravia, Scott,
Truxton, Cuyler, Sempronius, Tully, Fabius, East Homer,
Kelloggsville, La Fayette, Montville, Glen Haven, Baltimore and
Vesper.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 4272 7653 4284 7626 4294 7603 4290 7596
4285 7593 4279 7591 4277 7591 4274 7591
4271 7592 4266 7602 4265 7607 4264 7610
4263 7615 4260 7629 4256 7648 4259 7649
4263 7650
FLASH FLOOD...RADAR INDICATED
$$
MPH247
WGUS71 KBGM 180355
FFSBGM
Flash Flood Statement
National Weather Service Binghamton NY
1155 PM EDT Tue Aug 17 2021
NYC011-023-067-109-180405-
/O.EXP.KBGM.FF.W.0045.000000T0000Z-210818T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Cayuga NY-Cortland NY-Onondaga NY-Tompkins NY-
1155 PM EDT Tue Aug 17 2021
...FLASH FLOOD WARNING WILL EXPIRE AT MIDNIGHT EDT TONIGHT FOR
CAYUGA, NORTHERN CORTLAND, SOUTHEASTERN ONONDAGA AND NORTHEASTERN
TOMPKINS COUNTIES...
The heavy rain has ended and flood waters are receding. Please
continue to heed remaining road closures and be aware of possible
debris and road washouts.
Additional rounds of heavy rainfall are possible overnight and
through Wednesday Night. A Flash Flood Watch remains in effect until
800 AM EDT Thursday for a portion of central New York.
LAT...LON 4272 7653 4284 7626 4294 7603 4290 7596
4285 7593 4279 7591 4277 7591 4274 7591
4271 7592 4266 7602 4265 7607 4264 7610
4263 7615 4260 7629 4256 7648 4259 7649
4263 7650
$$
MPHThe office that day
Everything else NWS Binghamton, NY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 8:36 PM EDT | Special Weather Statement | BGM | Tompkins | 39 min |
| Aug 18, 4:06 AM EDT | Areal Flood Advisory | BGM | Chemung, Steuben | 111 min |
| Aug 18, 3:27 PM EDT | River Flood Warning | BGM | Cortland | 63 hr |
| Aug 18, 5:09 PM EDT | Areal Flood Advisory | BGM | Steuben | 89 min |
| Aug 18, 6:38 PM EDT | Flash Flood Warning | BGM | Steuben | 5 hr |
| Aug 18, 7:00 PM EDT | Areal Flood Advisory | BGM | Chemung, Schuyler, Steuben, Yates | 6 hr |
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.