Alert archive / Mississippi / Freeze Warnings in 2019

Freeze Warning 5, NWS Jackson, MS

October 31, 201919 counties in Mississippi; 9 parishes in Louisiana; Ashley County, Chicot County, Arkansas

NWS Jackson, MS issued this freeze warning at Oct 31, 2019, 4:52 AM CDT for 19 counties in Mississippi; 9 parishes in Louisiana; Ashley County, Chicot County, Arkansas. It took effect at Nov 1, 2019, 3:00 AM CDT. It was in force for 5 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Oct 31, 2019, 4:52 AM CDT (09:52 UTC)
In effect from: Nov 1, 2019, 3:00 AM CDT
Expired: Nov 1, 2019, 8:00 AM CDT
In force: 5 hr
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, Attala County, MS, Bolivar County, MS, Carroll County, MS, Choctaw County, MS, Clay County, MS, Grenada County, MS, Holmes County, MS, Humphreys County, MS, Issaquena County, MS, Leflore County, MS, Lowndes County, MS, Montgomery County, MS, Oktibbeha County, MS, Sharkey County, MS, Sunflower County, MS, Warren County, MS, Washington County, MS, Webster County, MS, Yazoo County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 95 km from the middle of the area, began a volume at 09:51 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

Jackson, MS (KJAN), launched 00:00Z, 9.9 hours before the alert went out and 86 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: 173 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 889 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 98 m²/s²
0-3 km storm-relative helicity: 131 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.3

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this freeze warning 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 freeze warning went out at Oct 31, 3:55 AM CDT, 57 minutes earlier.

Area forecast discussion, Oct 31, 3:55 AM CDT, 57 minutes before

<!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>

Hazardous weather outlook, Oct 31, 4:20 AM CDT, 32 minutes before

<!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>

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 30, 8:38 PM CDT	Severe Thunderstorm Warning	JAN	Lincoln	18 min
Oct 30, 8:40 PM CDT	Flash Flood Warning	JAN	Hinds, Madison	2 hr
Oct 30, 9:23 PM CDT	Flash Flood Warning	JAN	Rankin	88 min
Oct 30, 9:38 PM CDT	Flash Flood Warning	JAN	Lawrence, Lincoln	65 min
Oct 30, 9:41 PM CDT	Special Weather Statement	JAN	Simpson	49 min
Oct 31, 6:39 AM CDT	River Flood Warning	JAN	Leake	7 days
Oct 31, 6:39 AM CDT	River Flood Warning	JAN	Leake	4 days
Oct 31, 6:39 AM CDT	River Flood Warning	JAN	Madison, Rankin	5 days
Oct 31, 9:22 AM CDT	River Flood Warning	JAN	Copiah, Simpson	10 days
Oct 31, 9:22 AM CDT	River Flood Warning	JAN	Lawrence	12 days
Oct 31, 9:22 AM CDT	River Flood Warning	JAN	Marion	24 hr

Nearby

Freeze Warnings in Mississippi, 2019 Freeze Warnings in Louisiana, 2019 Freeze Warnings in Arkansas, 2019 Every freeze warning in 2019

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.