Alert archive / Mississippi / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 129, NWS New Orleans, LA

November 26, 2020Jackson County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Nov 26, 2020, 8:43 PM CST for Jackson County, Mississippi. It was in force for 32 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: Nov 26, 2020, 8:43 PM CST (02:43 UTC)
Expired: Nov 26, 2020, 9:15 PM CST
In force: 32 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Jackson County, MS

The radar

The Mobile radar (KMOB), 44 km from the middle of the area, began a volume at 02:42 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 00:00Z, 2.7 hours before the alert went out and 106 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: 725 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 505 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 152 m²/s²
0-3 km storm-relative helicity: 218 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 3.2

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 New Orleans, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at Nov 26, 3:42 PM CST, 5 hours 1 minute earlier.

Area forecast discussion, Nov 26, 3:42 PM CST, 5 hours 1 minute before

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In the hours before

Special weather statement, Nov 26, 4:13 PM CST, 4 hours 30 minutes before

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Special weather statement, Nov 26, 5:20 PM CST, 3 hours 23 minutes before

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Special weather statement, Nov 26, 6:35 PM CST, 2 hours 8 minutes before

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Special weather statement, Nov 26, 6:54 PM CST, 1 hour 49 minutes before

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Special weather statement, Nov 26, 7:29 PM CST, 1 hour 14 minutes before

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Special weather statement, Nov 26, 8:21 PM CST, 22 minutes before

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The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 26, 8:00 PM CST	Special Marine Warning	LIX		60 min
Nov 27, 3:37 AM CST	Marine Dense Fog Advisory	LIX		7 hr
Nov 27, 3:38 AM CST	Dense Fog Advisory	LIX	Assumption, East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, Saint Bernard and 7 more	5 hr
Nov 27, 11:06 AM CST	Special Weather Statement	LIX	West Feliciana	39 min
Nov 27, 4:15 PM CST	Severe Thunderstorm Warning	LIX	Iberville	45 min
Nov 27, 4:20 PM CST	Special Weather Statement	LIX	Washington	40 min
Nov 27, 4:58 PM CST	Severe Thunderstorm Warning	LIX	Ascension, Assumption, Iberville, Saint James	47 min
Nov 27, 5:45 PM CST	Special Weather Statement	LIX	Saint James	60 min
Nov 26, 6:35 PM CST	Special Weather Statement	LIX	Stone	55 min
Nov 26, 6:54 PM CST	Special Weather Statement	LIX	Hancock	36 min
Nov 26, 7:29 PM CST	Special Weather Statement	LIX	Harrison	46 min
Nov 26, 8:21 PM CST	Special Weather Statement	LIX	Jackson	54 min
Nov 27, 11:43 AM CST	Special Weather Statement	LIX	Amite	47 min
Nov 27, 12:28 PM CST	Special Weather Statement	LIX	Amite	47 min
Nov 27, 3:33 PM CST	Special Weather Statement	LIX	Walthall	27 min
Nov 27, 4:43 PM CST	Tornado Warning	LIX	Pearl River	20 min
Nov 27, 4:50 PM CST	Tornado Warning	LIX	Hancock, Pearl River	25 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.