Alert archive / Ohio / Mesoscale Discussions in 2003

Mesoscale Discussion 2265

August 26, 20035 states

The Storm Prediction Center issued this mesoscale discussion at Aug 26, 2003, 11:08 AM EDT for 5 states. It was in force for 2 hr.

The area

The outline as issued.

The facts

Issued
Aug 26, 2003, 11:08 AM EDT (15:08 UTC)
Expired
Aug 26, 2003, 1:15 PM EDT
In force
2 hr
Issued by
the Storm Prediction Center
All 88 counties

Allegany County, MD, Garrett County, MD, Washington County, MD, Ashland County, OH, Athens County, OH, Auglaize County, OH, Belmont County, OH, Carroll County, OH, Champaign County, OH, Columbiana County, OH, Coshocton County, OH, Crawford County, OH, Delaware County, OH, Fairfield County, OH, Franklin County, OH, Guernsey County, OH, Hardin County, OH, Harrison County, OH, Hocking County, OH, Holmes County, OH, Jefferson County, OH, Knox County, OH, Licking County, OH, Logan County, OH, Madison County, OH, Mahoning County, OH, Marion County, OH, Monroe County, OH, Morgan County, OH, Morrow County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Pickaway County, OH, Richland County, OH, Shelby County, OH, Stark County, OH, Tuscarawas County, OH, Union County, OH, Washington County, OH, Wayne County, OH, Allegheny County, PA, Beaver County, PA, Bedford County, PA, Butler County, PA, Cambria County, PA, Fayette County, PA, Fulton County, PA, Greene County, PA, Lawrence County, PA, Somerset County, PA, Washington County, PA, Westmoreland County, PA, City of Winchester, VA, Clarke County, VA, Frederick County, VA, Loudoun County, VA, Shenandoah County, VA, Warren County, VA, Barbour County, WV, Berkeley County, WV, Brooke County, WV, Doddridge County, WV, Gilmer County, WV, Grant County, WV, Hampshire County, WV, Hancock County, WV, Hardy County, WV, Harrison County, WV, Jefferson County, WV, Lewis County, WV, Marion County, WV, Marshall County, WV, Mineral County, WV, Monongalia County, WV, Morgan County, WV, Ohio County, WV, Pendleton County, WV, Pleasants County, WV, Preston County, WV, Randolph County, WV, Ritchie County, WV, Taylor County, WV, Tucker County, WV, Tyler County, WV, Upshur County, WV, Wetzel County, WV, Wood County, WV

The radar

The Pittsburgh radar (KPBZ), 97 km from the middle of the area, began a volume at 15:10 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

Pittsburgh, PA (KPIT), launched 12:00Z, 3.1 hours before the alert went out and 102 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, Pittsburgh, PA at 12:00Z on 2003-08-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 390 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, Pittsburgh, PA at 12:00Z on 2003-08-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 square meters per square second.19395878Sfc1 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
390 J/kg
Mixed-layer CIN
-71 J/kg
Mixed-layer LCL
1045 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
210 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

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
Aug 26, 1:05 PM EDTSevere Thunderstorm WatchSPCAllegany, Carroll, Garrett, Washington5 hr
Aug 26, 2:19 PM EDTMesoscale DiscussionSPCAllegany, Anne Arundel, Calvert, Charles, Frederick, Garrett and 5 more116 min
Aug 26, 2:55 PM EDTSevere Thunderstorm WatchSPCAnne Arundel, Baltimore, Calvert, Caroline, Carroll, Cecil and 11 more5 hr
Aug 26, 4:45 PM EDTMesoscale DiscussionSPCCalvert, Caroline, Charles, Dorchester, Prince George's, Queen Anne's and 5 more90 min
Aug 26, 5:48 PM EDTMesoscale DiscussionSPCCalvert, Caroline, Charles, Dorchester, Prince George's, Queen Anne's and 5 more57 min
Aug 26, 12:27 AM EDTMesoscale DiscussionSPCAshtabula, Carroll, Columbiana, Cuyahoga, Erie, Geauga and 14 more63 min
Aug 26, 8:30 AM EDTMesoscale DiscussionSPCAshland, Ashtabula, Cuyahoga, Erie, Geauga, Hancock and 12 more2 hr
Aug 26, 9:10 AM EDTSevere Thunderstorm WatchSPCAllen, Ashland, Ashtabula, Auglaize, Columbiana, Crawford and 35 more5 hr
Aug 26, 3:46 PM EDTMesoscale DiscussionSPCAllen, Ashland, Auglaize, Belmont, Carroll, Champaign and 37 more119 min
Aug 26, 4:25 PM EDTSevere Thunderstorm WatchSPCAllen, Ashland, Auglaize, Belmont, Carroll, Columbiana and 39 more6 hr
Aug 26, 6:18 PM EDTMesoscale DiscussionSPCAllen, Ashland, Auglaize, Belmont, Carroll, Columbiana and 35 more57 min
Aug 26, 7:55 PM EDTMesoscale DiscussionSPCAshland, Belmont, Carroll, Columbiana, Coshocton, Delaware and 21 more65 min

Nearby

Mesoscale Discussions in Ohio, 2003Mesoscale Discussions in West Virginia, 2003Mesoscale Discussions in Pennsylvania, 2003Every 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.