Alert archive / New York / Lakeshore Flood Warnings in 2020

Lakeshore Flood Warning 11, NWS Buffalo, NY

May 9, 20204 counties in New York

NWS Buffalo, NY issued this lakeshore flood warning at May 9, 2020, 4:17 AM EDT for 4 counties in New York. It took effect at May 9, 2020, 2:00 PM EDT. It was in force for 9 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: May 9, 2020, 4:17 AM EDT (08:17 UTC)
In effect from: May 9, 2020, 2:00 PM EDT
Expired: May 9, 2020, 10:31 PM EDT
In force: 9 hr
Issued by: NWS Buffalo, NY

Counties Cayuga County, NY, Jefferson County, NY, Oswego County, NY, Wayne County, NY

The radar

The Ft Drum radar (KTYX), 75 km from the middle of the area, began a volume at 08:17 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, 8.3 hours before the alert went out and 227 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1486 m above ground
0-6 km bulk shear: 74 kt
0-1 km storm-relative helicity: -20 m²/s²
0-3 km storm-relative helicity: 408 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 lakeshore flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Buffalo, NY wrote its last area forecast discussion before this lakeshore flood warning went out at May 9, 2:46 AM EDT, 1 hour 31 minutes earlier.

Area forecast discussion, May 9, 2:46 AM EDT, 1 hour 31 minutes before

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In the hours before

Special weather statement, May 9, 2:16 AM EDT, 2 hours 1 minute before

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  <title>Service Notice</title>
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</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.
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        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 Buffalo, NY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 9, 1:41 PM EDT	Freeze Warning	BUF	Cayuga, Chautauqua, Erie, Genesee, Livingston, Monroe and 6 more	18 hr

Nearby

Lakeshore Flood Warnings in New York, 2020 Every lakeshore flood warning in 2020

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.