Alert archive / New York / Mesoscale Discussions in 2003

Mesoscale Discussion 2315

August 29, 200326 counties in New York

The Storm Prediction Center issued this mesoscale discussion at Aug 29, 2003, 6:33 PM EDT for 26 counties in New York. It was in force for 57 min.

The area

The outline as issued.

The facts

Issued: Aug 29, 2003, 6:33 PM EDT (22:33 UTC)
Expired: Aug 29, 2003, 7:30 PM EDT
In force: 57 min
Issued by: the Storm Prediction Center

All 26 counties

Albany County, NY, Broome County, NY, Chemung County, NY, Chenango County, NY, Columbia County, NY, Cortland County, NY, Delaware County, NY, Fulton County, NY, Greene County, NY, Hamilton County, NY, Herkimer County, NY, Madison County, NY, Montgomery County, NY, Oneida County, NY, Onondaga County, NY, Otsego County, NY, Rensselaer County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Schuyler County, NY, Steuben County, NY, Tioga County, NY, Tompkins County, NY, Warren County, NY, Washington County, NY

The radar

The Binghamton radar (KBGM), 81 km from the middle of the area, began a volume at 22:36 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 12:00Z, 10.6 hours before the alert went out and 139 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: 948 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 210 m²/s²
0-3 km storm-relative helicity: 212 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <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.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 29, 10:30 AM EDT	Mesoscale Discussion	SPC	Allegany, Cayuga, Chemung, Cortland, Erie, Franklin and 22 more	3 hr
Aug 29, 10:55 AM EDT	Severe Thunderstorm Watch	SPC	Allegany, Cattaraugus, Cayuga, Clinton, Erie, Essex and 22 more	5 hr
Aug 29, 1:32 PM EDT	Mesoscale Discussion	SPC	Broome, Chautauqua, Chemung, Chenango, Cortland, Otsego and 4 more	2 hr
Aug 29, 2:23 PM EDT	Mesoscale Discussion	SPC	Allegany, Cattaraugus, Cayuga, Clinton, Erie, Essex and 22 more	97 min
Aug 29, 3:35 PM EDT	Severe Thunderstorm Watch	SPC	Albany, Allegany, Broome, Cayuga, Chemung, Chenango and 33 more	5 hr

Nearby

Mesoscale Discussions in New York, 2003 Every mesoscale discussion in 2003

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.