Alert archive / New York / Severe Thunderstorm Watches in 2004

Severe Thunderstorm Watch 271

May 24, 20044 states

The Storm Prediction Center issued this severe thunderstorm watch at May 24, 2004, 11:00 AM EDT for 4 states. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: May 24, 2004, 11:00 AM EDT (15:00 UTC)
Expired: May 24, 2004, 4:00 PM EDT
In force: 5 hr
Issued by: the Storm Prediction Center

All 39 counties

Berkshire County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Bergen County, NJ, Essex County, NJ, Hudson County, NJ, Morris County, NJ, Passaic County, NJ, Sussex County, NJ, Union County, NJ, Warren County, NJ, Albany County, NY, Bronx County, NY, Columbia County, NY, Delaware County, NY, Dutchess County, NY, Greene County, NY, New York County, NY, Orange County, NY, Putnam County, NY, Rensselaer County, NY, Rockland County, NY, Schenectady County, NY, Schoharie County, NY, Sullivan County, NY, Ulster County, NY, Westchester County, NY, Carbon County, PA, Columbia County, PA, Lackawanna County, PA, Lehigh County, PA, Luzerne County, PA, Monroe County, PA, Northampton County, PA, Northumberland County, PA, Pike County, PA, Schuylkill County, PA, Wayne County, PA

The radar

The Binghamton radar (KBGM), 129 km from the middle of the area, began a volume at 15:03 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.

Warnings issued inside it

9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

Issued	Product	Office	Counties	Lasted
May 24, 11:29 AM EDT	Severe Thunderstorm Warning	BGM	Sullivan	46 min
May 24, 11:51 AM EDT	Severe Thunderstorm Warning	OKX	Orange	39 min
May 24, 11:58 AM EDT	Severe Thunderstorm Warning	ALY	Columbia, Dutchess, Ulster	62 min
May 24, 12:15 PM EDT	Severe Thunderstorm Warning	ALY	Berkshire	60 min
May 24, 12:17 PM EDT	Severe Thunderstorm Warning	BOX	Hampden, Hampshire	43 min
May 24, 3:24 PM EDT	Severe Thunderstorm Warning	BGM	Lackawanna, Luzerne	51 min
May 24, 3:36 PM EDT	Severe Thunderstorm Warning	CTP	Schuylkill	39 min
May 24, 3:58 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Lehigh	47 min
May 24, 4:00 PM EDT	Severe Thunderstorm Warning	BGM	Pike, Wayne	45 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 3.0 hours before the alert went out and 171 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: 2 J/kg
Mixed-layer CIN: -444 J/kg
Mixed-layer LCL: 721 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 63 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.6

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
May 24, 10:03 AM EDT	Mesoscale Discussion	SPC		117 min
May 24, 5:45 PM EDT	Severe Thunderstorm Watch	SPC		5 hr
May 24, 7:25 PM EDT	Mesoscale Discussion	SPC		95 min
May 24, 4:55 PM EDT	Severe Thunderstorm Watch	SPC	Berkshire	4 hr
May 24, 5:43 PM EDT	Mesoscale Discussion	SPC	Berkshire	47 min
May 24, 3:00 PM EDT	Mesoscale Discussion	SPC	Bergen, Essex, Hudson, Hunterdon, Middlesex, Morris and 5 more	90 min
May 23, 11:02 PM EDT	Mesoscale Discussion	SPC	Cayuga, Essex, Fulton, Hamilton, Herkimer, Lewis and 8 more	3 hr
May 24, 12:24 PM EDT	Mesoscale Discussion	SPC	Allegany, Broome, Chemung, Chenango, Cortland, Ontario and 6 more	2 hr
May 24, 12:40 PM EDT	Severe Thunderstorm Watch	SPC	Allegany, Broome, Cattaraugus, Chemung, Chenango, Cortland and 11 more	4 hr
May 24, 12:30 AM EDT	Severe Thunderstorm Watch	SPC	Allegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 10 more	6 hr
May 24, 2:09 AM EDT	Mesoscale Discussion	SPC	Greene, Washington	2 hr
May 24, 4:55 AM EDT	Mesoscale Discussion	SPC	Allegheny, Armstrong, Beaver, Butler, Clarion, Crawford and 10 more	95 min

Nearby

Severe Thunderstorm Watches in New York, 2004 Severe Thunderstorm Watches in Pennsylvania, 2004 Severe Thunderstorm Watches in New Jersey, 2004 Every severe thunderstorm watch in 2004

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.