Alert archive / New York / Mesoscale Discussions in 2007

Mesoscale Discussion 1393

July 5, 200714 counties in New York; McKean County, Warren County, Pennsylvania

The Storm Prediction Center issued this mesoscale discussion at Jul 5, 2007, 12:17 PM EDT for 14 counties in New York; McKean County, Warren County, Pennsylvania. It was in force for 118 min.

The area

The outline as issued.

The facts

Issued
Jul 5, 2007, 12:17 PM EDT (16:17 UTC)
Expired
Jul 5, 2007, 2:15 PM EDT
In force
118 min
Issued by
the Storm Prediction Center

Counties Allegany County, NY, Broome County, NY, Cattaraugus County, NY, Chemung County, NY, Chenango County, NY, Cortland County, NY, Madison County, NY, Onondaga County, NY, Schuyler County, NY, Seneca County, NY, Steuben County, NY, Tioga County, NY, Tompkins County, NY, Yates County, NY, McKean County, PA, Warren County, PA

The radar

The Buffalo radar (KBUF), 107 km from the middle of the area, began a volume at 16:19 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 watches that followed

Watches SPC issued over any of the same counties within four hours of this discussion.

The nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 4.3 hours before the alert went out and 103 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-pSkew-T log-p diagram, Buffalo Intl Airport, NY at 12:00Z on 2007-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 16 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 12:00Z on 2007-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
16 J/kg
Mixed-layer CIN
-105 J/kg
Mixed-layer LCL
869 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
52 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.

IssuedProductOfficeCountiesLasted
Jul 5, 1:00 PM EDTSevere Thunderstorm WatchSPCAllegany, Broome, Cattaraugus, Cayuga, Chemung, Chenango and 13 more7 hr
Jul 5, 3:10 PM EDTMesoscale DiscussionSPCAlbany, Columbia, Dutchess, Greene, Montgomery, Orange and 4 more65 min
Jul 5, 3:34 PM EDTSevere Thunderstorm WatchSPCAlbany, Columbia, Dutchess, Fulton, Greene, Montgomery and 10 more5 hr
Jul 5, 4:12 PM EDTMesoscale DiscussionSPCAlbany, Columbia, Dutchess, Greene, Montgomery, Orange and 4 more2 hr
Jul 5, 11:40 AM EDTMesoscale DiscussionSPCAllegheny, Bedford, Blair, Cambria, Fayette, Fulton and 6 more2 hr

Nearby

Mesoscale Discussions in New York, 2007Mesoscale Discussions in Pennsylvania, 2007Every mesoscale discussion in 2007

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.