Alert archive / Mississippi / Heat Advisories in 2018

Heat Advisory 4, NWS Jackson, MS

June 28, 201819 counties in Mississippi; 9 parishes in Louisiana; Ashley County, Chicot County, Arkansas

NWS Jackson, MS issued this heat advisory at Jun 28, 2018, 2:56 PM CDT for 19 counties in Mississippi; 9 parishes in Louisiana; Ashley County, Chicot County, Arkansas. It took effect at Jun 29, 2018, 10:00 AM CDT. It was in force for .

The area

The counties it named.

The facts

Issued: Jun 28, 2018, 2:56 PM CDT (19:56 UTC)
In effect from: Jun 29, 2018, 10:00 AM CDT
Expired: Jun 29, 2018, 9:44 AM CDT
In force
Issued by: NWS Jackson, MS

All 30 counties

Ashley County, AR, Chicot County, AR, Catahoula Parish, LA, Concordia Parish, LA, East Carroll Parish, LA, Franklin Parish, LA, Madison Parish, LA, Morehouse Parish, LA, Richland Parish, LA, Tensas Parish, LA, West Carroll Parish, LA, Adams County, MS, Bolivar County, MS, Carroll County, MS, Claiborne County, MS, Copiah County, MS, Grenada County, MS, Hinds County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Jefferson County, MS, Leflore County, MS, Madison County, MS, Montgomery County, MS, Sharkey County, MS, Sunflower County, MS, Warren County, MS, Washington County, MS, Yazoo County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 97 km from the middle of the area, began a volume at 19:57 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, 7.9 hours before the alert went out and 253 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: 1699 J/kg
Mixed-layer CIN: -251 J/kg
Mixed-layer LCL: 1516 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 15 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

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 28, 12:01 PM CDT, 2 hours 55 minutes earlier.

Area forecast discussion, Jun 28, 12:01 PM CDT, 2 hours 55 minutes before

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Hazardous weather outlook, Jun 28, 11:57 AM CDT, 2 hours 59 minutes before

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<body>
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    <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>
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        Please try again in a few minutes.
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        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 28, 4:41 PM CDT	Special Weather Statement	JAN	Lowndes, Noxubee	64 min
Jun 28, 5:36 PM CDT	Special Weather Statement	JAN	Kemper, Lauderdale	54 min
Jun 28, 6:09 PM CDT	Special Weather Statement	JAN	Choctaw, Clay, Oktibbeha, Webster, Winston	66 min
Jun 28, 6:33 PM CDT	Special Weather Statement	JAN	Lauderdale, Neshoba, Newton	57 min
Jun 28, 6:51 PM CDT	Special Weather Statement	JAN	Clarke, Jasper	54 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.