Alert archive / New York / Areal Flood Warnings in 2021

Areal Flood Warning 7, NWS Binghamton, NY

August 19, 2021Steuben County, New York

NWS Binghamton, NY issued this areal flood warning at Aug 19, 2021, 3:44 AM EDT for Steuben County, New York. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 19, 2021, 3:44 AM EDT (07:44 UTC)
Expired
Aug 19, 2021, 10:00 AM EDT
In force
6 hr
Issued by
NWS Binghamton, NY
Area
Storm-based polygon
Flood severity
None

County Steuben County, NY

The radar

The Binghamton radar (KBGM), 115 km from the middle of the area, began a volume at 07:44 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

Albany, NY (KALY), launched 00:00Z, 7.7 hours before the alert went out and 295 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.

Skew-T log-pSkew-T log-p diagram, Albany, NY at 00:00Z on 2021-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 286 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Albany, NY at 00:00Z on 2021-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 50 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
286 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
902 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
50 m²/s²
0-3 km storm-relative helicity
134 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.9

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Binghamton, NY wrote its last area forecast discussion before this areal flood warning went out at Aug 19, 2:21 AM EDT, 1 hour 23 minutes earlier.

Area forecast discussion, Aug 19, 2:21 AM EDT, 1 hour 23 minutes before
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Hazardous weather outlook, Aug 18, 11:39 AM EDT, 16 hours 5 minutes before
Hazardous Weather Outlook
National Weather Service Binghamton NY
1139 AM EDT Wed Aug 18 2021

NYZ009-015>018-022>025-036-037-044>046-055>057-062-PAZ038>040-048-
072-191545-
Northern Oneida-Yates-Seneca-Southern Cayuga-Onondaga-Steuben-
Schuyler-Chemung-Tompkins-Madison-Southern Oneida-Cortland-Chenango-
Otsego-Tioga-Broome-Delaware-Sullivan-Bradford-Susquehanna-
Northern Wayne-Pike-Southern Wayne-
1139 AM EDT Wed Aug 18 2021

...FLASH FLOOD WATCH IN EFFECT THROUGH THURSDAY MORNING...

This Hazardous Weather Outlook is for central New York and
northeast Pennsylvania.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ043-044-047-191545-
Wyoming-Lackawanna-Luzerne-
1139 AM EDT Wed Aug 18 2021

...FLASH FLOOD WATCH IN EFFECT THROUGH THURSDAY MORNING...
...TORNADO WATCH 447 IN EFFECT UNTIL 8 PM EDT THIS EVENING...

This Hazardous Weather Outlook is for northeast Pennsylvania.

.DAY ONE...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Tornado Watch.
   Flash Flood Watch.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed. Please relay any
information about severe weather to the NWS while following local,
state and CDC guidelines.

Kistner

In the hours before

Local storm report, Aug 19, 12:00 AM EDT, 3 hours 44 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
1200 AM EDT THU AUG 19 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1159 PM     FLASH FLOOD      MILO CENTER             42.67N 77.00W
08/18/2021                   YATES              NY   911 CALL CENTER

            ROADS FLOODED.

&&

NICOSIA
Local storm report, Aug 19, 1:14 AM EDT, 2 hours 30 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
114 AM EDT THU AUG 19 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0110 AM     FLASH FLOOD      MORAVIA                 42.71N 76.42W
08/19/2021                   CAYUGA             NY   911 CALL CENTER

            FLOODING IN THE VILLAGE OF MORAVIA.

&&

BJG
Local storm report, Aug 19, 2:15 AM EDT, 1 hour 29 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
215 AM EDT THU AUG 19 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0200 AM     FLASH FLOOD      1 S MARIETTA            42.91N 76.32W
08/19/2021                   ONONDAGA           NY   911 CALL CENTER

            ROUTE 174 FROM OTISCO VALLEY ROAD TO ROUTE
            20 CLOSED DUE TO FLOODING.

&&

BJG
Local storm report, Aug 19, 2:20 AM EDT, 1 hour 24 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
220 AM EDT THU AUG 19 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0130 AM     FLASH FLOOD      PREBLE                  42.74N 76.13W
08/19/2021                   CORTLAND           NY   911 CALL CENTER

            ROUTE 11 CLOSED BETWEEN EAST HOMER-BALTIMORE
            ROAD AND TULLY CENTER ROAD DUE TO FLOODING.

&&

BJG
Local storm report, Aug 19, 2:25 AM EDT, 1 hour 19 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
225 AM EDT THU AUG 19 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0100 AM     FLASH FLOOD      1 NNW HOMER             42.65N 76.19W
08/19/2021                   CORTLAND           NY   911 CALL CENTER

            ROUTE 41 IN HOMER CLOSED DUE TO A DEBRIS
            JAM/FLOODING.

&&

BJG
Local storm report, Aug 19, 3:11 AM EDT, 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BINGHAMTON NY
311 AM EDT THU AUG 19 2021

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0200 AM     FLASH FLOOD      MARCELLUS               42.98N 76.34W
08/19/2021                   ONONDAGA           NY   PUBLIC

            SEVERAL ROADS IMPASSABLE DUE TO FLOODING IN
            MARCELLUS AREA.

&&

BJG

The office that day

Everything else NWS Binghamton, NY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 18, 8:10 PM EDTAreal Flood AdvisoryBGMCayuga, Cortland, Madison, Oneida, Onondaga, Seneca and 2 more6 hr
Aug 18, 10:28 PM EDTFlash Flood Warning EmergencyCatastrophic damage threatBGMSteuben5 hr
Aug 18, 10:40 PM EDTFlash Flood WarningBGMCayuga, Seneca, Tompkins, Yates5 hr
Aug 19, 12:35 AM EDTFlash Flood WarningBGMCortland, Onondaga4 hr
Aug 19, 12:41 AM EDTAreal Flood AdvisoryBGMDelaware, Sullivan2 hr
Aug 19, 2:14 AM EDTAreal Flood AdvisoryBGMMadison, Oneida, Onondaga106 min
Aug 19, 2:52 AM EDTRiver Flood WarningBGMTompkins10 days
Aug 19, 4:02 AM EDTAreal Flood WarningBGMCayuga3 hr
Aug 19, 4:44 AM EDTRiver Flood WarningBGMSteuben3 hr
Aug 19, 4:48 AM EDTRiver Flood WarningBGMChemung11 hr
Aug 19, 5:07 AM EDTAreal Flood WarningBGMOnondaga5 hr
Aug 19, 5:29 AM EDTAreal Flood AdvisoryBGMOneida3 hr
Aug 19, 5:35 AM EDTRiver Flood WarningBGMOnondaga4 hr
Aug 19, 6:12 AM EDTFlash Flood WarningBGMOneida3 hr
Aug 19, 6:59 AM EDTAreal Flood WarningBGMCayuga11 hr
Aug 19, 8:02 AM EDTAreal Flood WarningBGMMadison, Oneida, Onondaga6 hr
Aug 19, 9:22 AM EDTAreal Flood WarningBGMOneida6 hr
Aug 19, 9:53 AM EDTRiver Flood WarningBGMChemung6 hr
Aug 19, 11:12 AM EDTRiver Flood WarningBGMMadison, Oneida10 hr
Aug 19, 3:12 PM EDTAreal Flood WarningBGMOneida9 hr
Aug 18, 8:22 PM EDTFlash Flood WarningBGMBradford2 hr
Aug 18, 11:03 PM EDTAreal Flood AdvisoryBGMLackawanna, Pike, Susquehanna, Wayne117 min

Nearby

Areal Flood Warnings in New York, 2021Every areal 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.