Alert archive / Mississippi / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 314, NWS Jackson, MS

June 23, 2020Covington County, Mississippi

NWS Jackson, MS issued this severe thunderstorm warning at Jun 23, 2020, 6:18 PM CDT for Covington County, Mississippi. It was in force for 42 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: Jun 23, 2020, 6:18 PM CDT (23:18 UTC)
Expired: Jun 23, 2020, 7:00 PM CDT
In force: 42 min
Issued by: NWS Jackson, MS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Covington County, MS

The radar

The Jackson/Brandon,MS radar (KDGX), 83 km from the middle of the area, began a volume at 23:18 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

Slidell Radar S, LA (KSIL), launched 12:00Z, 11.3 hours before the alert went out and 154 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: 2077 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 741 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 34 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 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 Jun 23, 4:22 PM CDT, 1 hour 56 minutes earlier.

Area forecast discussion, Jun 23, 4:22 PM CDT, 1 hour 56 minutes before

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Hazardous weather outlook, Jun 23, 4:20 PM CDT, 1 hour 58 minutes before

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In the hours before

Special weather statement, Jun 23, 5:38 PM CDT, 40 minutes before

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Special weather statement, Jun 23, 5:41 PM CDT, 37 minutes before

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Special weather statement, Jun 23, 5:52 PM CDT, 26 minutes before

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Special weather statement, Jun 23, 6:07 PM CDT, 11 minutes before

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Special weather statement, Jun 23, 6:11 PM CDT, 7 minutes before

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Special weather statement, Jun 23, 6:13 PM CDT, 5 minutes before

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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 23, 12:38 PM CDT	Special Weather Statement	JAN	Bolivar	37 min
Jun 23, 3:08 PM CDT	Special Weather Statement	JAN	Grenada	37 min
Jun 23, 3:37 PM CDT	Severe Thunderstorm Warning	JAN	Clay, Oktibbeha, Webster	38 min
Jun 23, 3:45 PM CDT	Special Weather Statement	JAN	Webster	30 min
Jun 23, 4:16 PM CDT	Special Weather Statement	JAN	Clay, Lowndes, Oktibbeha	44 min
Jun 23, 4:54 PM CDT	Special Weather Statement	JAN	Winston	36 min
Jun 23, 5:01 PM CDT	Special Weather Statement	JAN	Marion	29 min
Jun 23, 5:09 PM CDT	Special Weather Statement	JAN	Noxubee	36 min
Jun 23, 5:28 PM CDT	Special Weather Statement	JAN	Kemper	47 min
Jun 23, 5:38 PM CDT	Special Weather Statement	JAN	Lawrence, Lincoln	52 min
Jun 23, 5:52 PM CDT	Special Weather Statement	JAN	Jefferson Davis	23 min
Jun 23, 6:07 PM CDT	Special Weather Statement	JAN	Copiah, Jefferson Davis, Lawrence	53 min
Jun 23, 6:11 PM CDT	Special Weather Statement	JAN	Jones	34 min
Jun 23, 6:13 PM CDT	Special Weather Statement	JAN	Covington	32 min
Jun 23, 6:25 PM CDT	Special Weather Statement	JAN	Lauderdale	50 min
Jun 23, 6:43 PM CDT	Severe Thunderstorm Warning	JAN	Simpson	47 min
Jun 23, 6:46 PM CDT	Special Weather Statement	JAN	Jones	44 min
Jun 23, 6:49 PM CDT	Special Weather Statement	JAN	Copiah	41 min
Jun 23, 6:57 PM CDT	Special Weather Statement	JAN	Smith	48 min
Jun 23, 5:41 PM CDT	Special Weather Statement	JAN	Catahoula	34 min
Jun 23, 6:28 PM CDT	Special Weather Statement	JAN	Catahoula	32 min
Jun 23, 9:25 AM CDT	Special Weather Statement	JAN	Ashley	35 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2020 Every severe thunderstorm warning in 2020

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.