Alert archive / Mississippi / Severe Thunderstorm Warnings in 2025

Severe Thunderstorm Warning 302, NWS Jackson, MS

May 20, 20254 counties in Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at May 20, 2025, 9:18 PM CDT for 4 counties in Mississippi. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 20, 2025, 9:18 PM CDT (02:18 UTC)
Expired: May 20, 2025, 10:15 PM CDT
In force: 57 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Leake County, MS, Madison County, MS, Rankin County, MS, Scott County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 34 km from the middle of the area, began a volume at 02:19 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 20, 5:50 PM CDT	Tornado Watch	SPC	5 hr

The nearest sounding before it

Jackson, MS (KJAN), launched 00:00Z, 2.3 hours before the alert went out and 37 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: 1763 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 1098 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 169 m²/s²
0-3 km storm-relative helicity: 226 m²/s²
Significant tornado parameter: 2.0
Supercell composite: 15.1

Open this sounding in Storm Lab

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.

NWS Jackson, MS wrote its last area forecast discussion before this severe thunderstorm warning went out at May 20, 7:49 PM CDT, 1 hour 29 minutes earlier.

Area forecast discussion, May 20, 7:49 PM CDT, 1 hour 29 minutes before

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In the hours before

Local storm report, May 20, 7:42 PM CDT, 1 hour 36 minutes before

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Special weather statement, May 20, 8:16 PM CDT, 1 hour 2 minutes before

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Special weather statement, May 20, 8:26 PM CDT, 52 minutes before

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Local storm report, May 20, 9:02 PM CDT, 16 minutes before

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Local storm report, May 20, 9:03 PM CDT, 15 minutes before

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Local storm report, May 20, 9:11 PM CDT, 7 minutes before

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      <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.
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      <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
May 20, 7:21 PM CDT	Severe Thunderstorm Warning	JAN	Humphreys, Issaquena, Sharkey, Yazoo	54 min
May 20, 7:28 PM CDT	Tornado Warning	JAN	Sharkey, Yazoo	28 min
May 20, 7:34 PM CDT	Severe Thunderstorm Warning	JAN	Attala, Holmes, Leake, Madison	32 min
May 20, 8:14 PM CDT	Severe Thunderstorm Warning	JAN	Sharkey, Yazoo	61 min
May 20, 8:16 PM CDT	Special Weather Statement	JAN	Adams	44 min
May 20, 8:22 PM CDT	Severe Thunderstorm Warning	JAN	Adams	35 min
May 20, 8:26 PM CDT	Special Weather Statement	JAN	Madison	34 min
May 20, 8:38 PM CDT	Severe Thunderstorm Warning	JAN	Leake, Madison	67 min
May 20, 8:53 PM CDT	Severe Thunderstorm Warning	JAN	Madison, Yazoo	46 min
May 20, 9:52 PM CDT	Severe Thunderstorm Warning	JAN	Newton, Scott	39 min
May 20, 10:35 PM CDT	Special Weather Statement	JAN	Lauderdale, Newton	40 min
May 20, 7:19 PM CDT	Severe Thunderstorm Warning	JAN	Catahoula, Concordia	56 min
May 20, 10:08 PM CDT	Severe Thunderstorm Warning	JAN	Concordia	22 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2025 Every severe thunderstorm warning in 2025

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.