Alert archive / Mississippi / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 614, NWS Jackson, MS

September 8, 1999Clarke County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Sep 8, 1999, 4:13 PM CDT for Clarke County, Mississippi. It was in force for 32 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Sep 8, 1999, 4:13 PM CDT (21:13 UTC)
Expired
Sep 8, 1999, 4:45 PM CDT
In force
32 min
Issued by
NWS Jackson, MS
Area
Whole counties

County Clarke County, MS

What was reported inside it

TimeReportWhereRemark
Sep 8, 4:18 PM CDTThunderstorm WindShubuta, MSA few trees were blown down.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 9.2 hours before the alert went out and 135 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, Jackson, MS at 12:00Z on 1999-09-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1096 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, Jackson, MS at 12:00Z on 1999-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 10 square meters per square second.1939Sfc1 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
1096 J/kg
Mixed-layer CIN
-86 J/kg
Mixed-layer LCL
1020 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
10 m²/s²
0-3 km storm-relative helicity
4 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

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

In the hours before

Special weather statement, Sep 8, 10:30 AM CDT, 5 hours 43 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
090400-

AREA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
1030 AM CDT WED SEP 8 1999

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS SOUTHEAST
ARKANSAS...NORTHEAST LOUISIANA AND WEST MISSISSIPPI TODAY. AN UPPER
LEVEL DISTURBANCE WILL APPROACH THE AREA FROM THE WEST. THE AIRMASS
OVER THE REGION IS VERY MOST AND UNSTABLE. AS A RESULT A FEW OF THE
STORMS MAY BECOME SEVERE THROUGH THIS EVENING. THE MAIN THREAT FROM
THESE STORMS WILL BE STRONG TO DAMAGING WINDS AND SOME HAIL.
SCATTERED THUNDERSTORMS ARE ALSO EXPECTED ACROSS THE EASTERN HALF OF
MISSISSIPPI TODAY...HEAVY RAINFALL AND GUSTY WINDS CAN BE EXPECTED
WITH THOSE STORMS.

STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT
PERSONNEL SHOULD STAY ALERT AS THIS SITUATION DEVELOPS. ACTIVATION
MAY BE REQUIRED LATER THIS AFTERNOON INTO TONIGHT.

FOR MORE INFORMATION...PLEASE VISIT OUR INTERNET WEB SITE AT:
HTTP://WWW.JANNWS.STATE.MS.US
Special weather statement, Sep 8, 10:30 AM CDT, 5 hours 43 minutes before
ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>066-072>074-
090400-

AREA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
1030 AM CDT WED SEP 8 1999

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS SOUTHEAST
ARKANSAS...NORTHEAST LOUISIANA AND WEST MISSISSIPPI TODAY. AN UPPER
LEVEL DISTURBANCE WILL APPROACH THE AREA FROM THE WEST. THE AIRMASS
OVER THE REGION IS VERY MOST AND UNSTABLE. AS A RESULT A FEW OF THE
STORMS MAY BECOME SEVERE THROUGH THIS EVENING. THE MAIN THREAT FROM
THESE STORMS WILL BE STRONG TO DAMAGING WINDS AND SOME HAIL.
SCATTERED THUNDERSTORMS ARE ALSO EXPECTED ACROSS THE EASTERN HALF OF
MISSISSIPPI TODAY...HEAVY RAINFALL AND GUSTY WINDS CAN BE EXPECTED
WITH THOSE STORMS.

STORM SPOTTERS...HAM RADIO OPERATORS...AND EMERGENCY MANAGEMENT
PERSONNEL SHOULD STAY ALERT AS THIS SITUATION DEVELOPS. ACTIVATION
MAY BE REQUIRED LATER THIS AFTERNOON INTO TONIGHT.

FOR MORE INFORMATION...PLEASE VISIT OUR INTERNET WEB SITE AT:
HTTP://WWW.JANNWS.STATE.MS.US
Local storm report, Sep 8, 2:54 PM CDT, 1 hour 19 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>
Local storm report, Sep 8, 2:54 PM CDT, 1 hour 19 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.

IssuedProductOfficeCountiesLasted
Sep 8, 12:43 PM CDTSevere Thunderstorm WarningJANClaiborne, Hinds32 min
Sep 8, 12:48 PM CDTSevere Thunderstorm WarningJANCopiah32 min
Sep 8, 1:14 PM CDTSevere Thunderstorm WarningJANHinds36 min
Sep 8, 1:25 PM CDTSevere Thunderstorm WarningJANYazoo35 min
Sep 8, 1:57 PM CDTSevere Thunderstorm WarningJANHinds33 min
Sep 8, 4:04 PM CDTSevere Thunderstorm WarningJANKemper31 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 1999Every severe thunderstorm warning in 1999

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.