Alert archive / New York / Mesoscale Discussions in 2011

Mesoscale Discussion 2036

August 21, 201110 states

The Storm Prediction Center issued this mesoscale discussion at Aug 21, 2011, 7:12 PM EDT for 10 states. It was in force for 63 min.

The area

The outline as issued.

The facts

Issued: Aug 21, 2011, 7:12 PM EDT (23:12 UTC)
Expired: Aug 21, 2011, 8:15 PM EDT
In force: 63 min
Issued by: the Storm Prediction Center

All 143 counties

Kent County, DE, New Castle County, DE, Sussex County, DE, Berkshire County, MA, Franklin County, MA, Hampden County, MA, Hampshire County, MA, Anne Arundel County, MD, Baltimore County, MD, Calvert County, MD, Caroline County, MD, Carroll County, MD, Cecil County, MD, Charles County, MD, City of Baltimore, MD, Dorchester County, MD, Frederick County, MD, Harford County, MD, Howard County, MD, Kent County, MD, Montgomery County, MD, Prince George's County, MD, Queen Anne's County, MD, Saint Mary's County, MD, Talbot County, MD, Washington County, MD, Wicomico County, MD, Belknap County, NH, Carroll County, NH, Cheshire County, NH, Grafton County, NH, Merrimack County, NH, Sullivan County, NH, Bergen County, NJ, Burlington County, NJ, Camden County, NJ, Cumberland County, NJ, Essex County, NJ, Gloucester County, NJ, Hudson County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Passaic County, NJ, Salem County, NJ, Somerset County, NJ, Sussex County, NJ, Union County, NJ, Warren County, NJ, Albany County, NY, Bronx County, NY, Broome County, NY, Chenango County, NY, Columbia County, NY, Delaware County, NY, Dutchess County, NY, Essex County, NY, Fulton County, NY, Greene County, NY, Hamilton County, NY, Herkimer County, NY, Kings County, NY, Montgomery County, NY, New York County, NY, Orange County, NY, Otsego County, NY, Putnam County, NY, Queens County, NY, Rensselaer County, NY, Richmond County, NY, Rockland County, NY, Saratoga County, NY, Schenectady County, NY, Schoharie County, NY, Sullivan County, NY, Ulster County, NY, Warren County, NY, Washington County, NY, Westchester County, NY, Adams County, PA, Berks County, PA, Bucks County, PA, Carbon County, PA, Chester County, PA, Columbia County, PA, Cumberland County, PA, Dauphin County, PA, Delaware County, PA, Franklin County, PA, Lackawanna County, PA, Lancaster County, PA, Lebanon County, PA, Lehigh County, PA, Luzerne County, PA, Monroe County, PA, Montgomery County, PA, Montour County, PA, Northampton County, PA, Northumberland County, PA, Perry County, PA, Philadelphia County, PA, Pike County, PA, Schuylkill County, PA, Snyder County, PA, Susquehanna County, PA, Wayne County, PA, Wyoming County, PA, York County, PA, Arlington County, VA, City of Alexandria, VA, City of Fairfax, VA, City of Falls Church, VA, City of Fredericksburg, VA, City of Manassas, VA, City of Manassas Park, VA, City of Winchester, VA, Clarke County, VA, Culpeper County, VA, Fairfax County, VA, Fauquier County, VA, Greene County, VA, King George County, VA, Loudoun County, VA, Madison County, VA, Orange County, VA, Page County, VA, Prince William County, VA, Rappahannock County, VA, Spotsylvania County, VA, Stafford County, VA, Warren County, VA, Westmoreland County, VA, Addison County, VT, Bennington County, VT, Orange County, VT, Rutland County, VT, Washington County, VT, Windham County, VT, Windsor County, VT, Berkeley County, WV, Jefferson County, WV

The radar

The Binghamton radar (KBGM), 107 km from the middle of the area, began a volume at 23:14 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, 11.2 hours before the alert went out and 152 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: 453 J/kg
Mixed-layer CIN: -97 J/kg
Mixed-layer LCL: 1024 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 106 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.6

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
Aug 21, 11:54 AM EDT	Mesoscale Discussion	SPC		2 hr
Aug 21, 12:52 PM EDT	Severe Thunderstorm Watch	SPC	Greater Bridgeport Planning Region, Lower Connecticut River Valley Planning Region, Naugatuck Valley Planning Region, Southeastern Connecticut Planning Region	8 hr
Aug 21, 1:20 PM EDT	Severe Thunderstorm Watch	SPC	Capitol Planning Region, Northwest Hills Planning Region, Northeastern Connecticut Planning Region	8 hr
Aug 21, 3:05 PM EDT	Mesoscale Discussion	SPC		55 min
Aug 21, 2:06 PM EDT	Severe Thunderstorm Watch	SPC	Dorchester, Somerset, Wicomico, Worcester	7 hr
Aug 21, 6:42 PM EDT	Mesoscale Discussion	SPC	Somerset	63 min
Aug 21, 4:34 PM EDT	Mesoscale Discussion	SPC	Berkshire	116 min
Aug 21, 3:24 PM EDT	Severe Thunderstorm Watch	SPC	Belknap, Carroll, Coos, Grafton, Merrimack, Rockingham and 2 more	6 hr
Aug 21, 1:45 PM EDT	Mesoscale Discussion	SPC	Amelia, Appomattox, Brunswick, Buckingham, Campbell, Charlotte and 22 more	90 min
Aug 21, 1:43 PM EDT	Mesoscale Discussion	SPC	Calhoun, Doddridge, Gilmer, Jackson, Mason, Pleasants and 4 more	62 min

Nearby

Mesoscale Discussions in New York, 2011 Mesoscale Discussions in Pennsylvania, 2011 Mesoscale Discussions in Virginia, 2011 Every mesoscale discussion in 2011

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.