Alert archive / Mississippi / Heat Advisories in 2018

Heat Advisory 2, NWS Jackson, MS

June 26, 201836 counties in Mississippi; 7 parishes in Louisiana; Ashley County, Chicot County, Arkansas

NWS Jackson, MS issued this heat advisory at Jun 26, 2018, 3:25 PM CDT for 36 counties in Mississippi; 7 parishes in Louisiana; Ashley County, Chicot County, Arkansas. It took effect at Jun 27, 2018, 10:00 AM CDT. It was in force for 11 hr.

The area

The counties it named.

The facts

Issued: Jun 26, 2018, 3:25 PM CDT (20:25 UTC)
In effect from: Jun 27, 2018, 10:00 AM CDT
Expired: Jun 27, 2018, 9:00 PM CDT
In force: 11 hr
Issued by: NWS Jackson, MS

All 45 counties

Ashley County, AR, Chicot County, AR, East Carroll Parish, LA, Franklin Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Richland Parish, LA, Tensas Parish, LA, West Carroll Parish, LA, Attala County, MS, Bolivar County, MS, Carroll County, MS, Choctaw County, MS, Claiborne County, MS, Clarke County, MS, Clay County, MS, Copiah County, MS, Grenada County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Jasper County, MS, Kemper County, MS, Lauderdale County, MS, Leake County, MS, Leflore County, MS, Lowndes County, MS, Madison County, MS, Montgomery County, MS, Neshoba County, MS, Newton County, MS, Noxubee County, MS, Oktibbeha County, MS, Rankin County, MS, Scott County, MS, Sharkey County, MS, Simpson County, MS, Smith County, MS, Sunflower County, MS, Warren County, MS, Washington County, MS, Webster County, MS, Winston County, MS, Yazoo County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 61 km from the middle of the area, began a volume at 20:27 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

Little Rock, AR (KBYH), launched 12:00Z, 8.4 hours before the alert went out and 224 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: 1250 J/kg
Mixed-layer CIN: -121 J/kg
Mixed-layer LCL: 1165 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: -108 m²/s²
0-3 km storm-relative helicity: -79 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this heat advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Jackson, MS wrote its last area forecast discussion before this heat advisory went out at Jun 26, 12:51 PM CDT, 2 hours 34 minutes earlier.

Area forecast discussion, Jun 26, 12:51 PM CDT, 2 hours 34 minutes before

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Hazardous weather outlook, Jun 26, 4:33 AM CDT, 10 hours 52 minutes before

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  <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.
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The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 26, 3:47 AM CDT	Heat Advisory	JAN	Adams, Claiborne, Clarke, Copiah, Covington, Forrest and 30 more	16 hr
Jun 26, 4:02 PM CDT	Special Weather Statement	JAN	Hinds	28 min
Jun 26, 4:09 PM CDT	Special Weather Statement	JAN	Hinds	36 min
Jun 26, 4:15 PM CDT	Severe Thunderstorm Warning	JAN	Lowndes, Oktibbeha	25 min
Jun 26, 4:38 PM CDT	Special Weather Statement	JAN	Lowndes	22 min
Jun 26, 5:02 PM CDT	Special Weather Statement	JAN	Lowndes	28 min

Nearby

Heat Advisories in Mississippi, 2018 Heat Advisories in Louisiana, 2018 Heat Advisories in Arkansas, 2018 Every heat advisory in 2018

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.