Alert archive / New York / Flash Flood Watches in 2017

Flash Flood Watch 9, NWS Binghamton, NY

July 23, 20179 counties in New York; 7 counties in Pennsylvania

NWS Binghamton, NY issued this flash flood watch at Jul 23, 2017, 3:22 PM EDT for 9 counties in New York; 7 counties in Pennsylvania. It took effect at Jul 23, 2017, 8:00 PM EDT. It was in force for 24 hr.

The area

The counties it named.

The facts

Issued
Jul 23, 2017, 3:22 PM EDT (19:22 UTC)
In effect from
Jul 23, 2017, 8:00 PM EDT
Expired
Jul 24, 2017, 8:00 PM EDT
In force
24 hr
Issued by
NWS Binghamton, NY
Flood severity
None

Counties Broome County, NY, Chemung County, NY, Chenango County, NY, Cortland County, NY, Delaware County, NY, Otsego County, NY, Sullivan County, NY, Tioga County, NY, Tompkins County, NY, Bradford County, PA, Lackawanna County, PA, Luzerne County, PA, Pike County, PA, Susquehanna County, PA, Wayne County, PA, Wyoming County, PA

The radar

The Binghamton radar (KBGM), 33 km from the middle of the area, began a volume at 19:22 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, 7.4 hours before the alert went out and 265 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, Buffalo Intl Airport, NY at 12:00Z on 2017-07-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Buffalo Intl Airport, NY at 12:00Z on 2017-07-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1092 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
126 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch 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 flash flood watch went out at Jul 23, 3:08 PM EDT, 14 minutes earlier.

Area forecast discussion, Jul 23, 3:08 PM EDT, 14 minutes before
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Hazardous weather outlook, Jul 23, 4:13 AM EDT, 11 hours 9 minutes before
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  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 23, 3:14 PM EDTSevere Thunderstorm WarningBGMSteuben46 min
Jul 23, 3:56 PM EDTSevere Thunderstorm WarningBGMYates64 min
Jul 23, 4:17 PM EDTAreal Flood AdvisoryBGMSeneca, Yates118 min
Jul 23, 5:09 PM EDTSpecial Weather StatementBGMSteuben36 min
Jul 23, 5:17 PM EDTFlash Flood WarningBGMSeneca, Yates2 hr
Jul 23, 6:16 PM EDTAreal Flood AdvisoryBGMSchuyler, Seneca, Tompkins119 min
Jul 23, 6:45 PM EDTSpecial Weather StatementBGMSchuyler30 min
Jul 23, 6:55 PM EDTSpecial Weather StatementBGMTompkins50 min
Jul 23, 7:15 PM EDTSpecial Weather StatementBGMChemung45 min
Jul 23, 7:57 PM EDTSpecial Weather StatementBGMTioga33 min

Nearby

Flash Flood Watches in New York, 2017Flash Flood Watches in Pennsylvania, 2017Every flash flood watch in 2017

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.