Alert archive / New York / Mesoscale Discussions in 2022

Mesoscale Discussion 876

May 22, 20225 states

The Storm Prediction Center issued this mesoscale discussion at May 22, 2022, 4:35 PM EDT for 5 states. It was in force for 85 min.

The area

The outline as issued.

The facts

Issued: May 22, 2022, 4:35 PM EDT (20:35 UTC)
Expired: May 22, 2022, 6:00 PM EDT
In force: 85 min
Issued by: the Storm Prediction Center
Concerning: Severe thunderstorm watch 262

All 53 counties

Berkshire County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Middlesex County, MA, Worcester County, MA, Androscoggin County, ME, Aroostook County, ME, Cumberland County, ME, Franklin County, ME, Kennebec County, ME, Oxford County, ME, Penobscot County, ME, Piscataquis County, ME, Somerset County, ME, Waldo County, ME, Belknap County, NH, Carroll County, NH, Cheshire County, NH, Coos County, NH, Grafton County, NH, Hillsborough County, NH, Merrimack County, NH, Rockingham County, NH, Strafford County, NH, Sullivan County, NH, Albany County, NY, Columbia County, NY, Dutchess County, NY, Essex County, NY, Fulton County, NY, Greene County, NY, Montgomery County, NY, Rensselaer County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Ulster County, NY, Warren County, NY, Washington County, NY, Addison County, VT, Bennington County, VT, Caledonia County, VT, Chittenden County, VT, Essex County, VT, Franklin County, VT, Lamoille County, VT, Orange County, VT, Orleans County, VT, Rutland County, VT, Washington County, VT, Windham County, VT, Windsor County, VT

The radar

The Portland,ME radar (KGYX), 115 km from the middle of the area, began a volume at 20:36 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

Gray, ME (KGYX), launched 12:00Z, 8.6 hours before the alert went out and 115 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: 73 J/kg
Mixed-layer CIN: -516 J/kg
Mixed-layer LCL: 660 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 177 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

As transmitted.

<!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 22, 2:13 PM EDT	Severe Thunderstorm Watch	SPC	Northwest Hills Planning Region	7 hr
May 22, 12:30 PM EDT	Mesoscale Discussion	SPC	Aroostook, Franklin, Oxford, Penobscot, Piscataquis, Somerset	3 hr
May 22, 12:20 PM EDT	Mesoscale Discussion	SPC	Albany, Broome, Chemung, Chenango, Columbia, Cortland and 21 more	2 hr
May 22, 1:53 PM EDT	Severe Thunderstorm Watch	SPC	Broome, Cayuga, Chemung, Chenango, Cortland, Delaware and 13 more	7 hr
May 22, 4:15 PM EDT	Mesoscale Discussion	SPC	Bronx, Broome, Delaware, Kings, New York, Orange and 6 more	90 min

Nearby

Mesoscale Discussions in New York, 2022 Mesoscale Discussions in Vermont, 2022 Mesoscale Discussions in Maine, 2022 Every mesoscale discussion in 2022

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.