Alert archive / Mississippi / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 33, NWS New Orleans, LA

March 27, 2023Harrison County, Jackson County, Mississippi

NWS New Orleans, LA issued this severe thunderstorm warning at Mar 27, 2023, 11:34 AM CDT for Harrison County, Jackson County, Mississippi. It was in force for 41 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: Mar 27, 2023, 11:34 AM CDT (16:34 UTC)
Expired: Mar 27, 2023, 12:15 PM CDT
In force: 41 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Harrison County, MS, Jackson County, MS

The radar

The Mobile radar (KMOB), 64 km from the middle of the area, began a volume at 16:36 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, 4.6 hours before the alert went out and 84 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: 1978 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 475 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 94 m²/s²
0-3 km storm-relative helicity: 115 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 4.7

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 Mar 27, 6:37 AM CDT, 4 hours 57 minutes earlier.

Area forecast discussion, Mar 27, 6:37 AM CDT, 4 hours 57 minutes before

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In the hours before

Special weather statement, Mar 27, 6:57 AM CDT, 4 hours 37 minutes before

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Special weather statement, Mar 27, 7:24 AM CDT, 4 hours 10 minutes before

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Special weather statement, Mar 27, 7:29 AM CDT, 4 hours 5 minutes before

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Special weather statement, Mar 27, 7:31 AM CDT, 4 hours 3 minutes before

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Special weather statement, Mar 27, 8:10 AM CDT, 3 hours 24 minutes before

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Special weather statement, Mar 27, 11:04 AM CDT, 30 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
Mar 27, 5:15 AM CDT	Special Weather Statement	LIX	Saint John the Baptist	30 min
Mar 27, 6:27 AM CDT	Special Weather Statement	LIX	Saint Tammany	33 min
Mar 27, 6:57 AM CDT	Special Weather Statement	LIX	Saint Tammany	33 min
Mar 27, 7:31 AM CDT	Special Weather Statement	LIX	Saint Tammany	29 min
Mar 27, 11:01 AM CDT	Special Marine Warning	LIX		44 min
Mar 27, 11:13 AM CDT	Severe Thunderstorm Warning	LIX	Orleans, Saint Tammany	47 min
Mar 27, 11:44 AM CDT	Special Marine Warning	LIX		61 min
Mar 27, 6:32 PM CDT	Areal Flood Advisory	LIX	East Baton Rouge, West Baton Rouge	3 hr
Mar 27, 6:55 PM CDT	Special Weather Statement	LIX	West Baton Rouge	35 min
Mar 27, 7:24 AM CDT	Special Weather Statement	LIX	Hancock	36 min
Mar 27, 7:29 AM CDT	Special Weather Statement	LIX	Pearl River	31 min
Mar 27, 7:34 AM CDT	Severe Thunderstorm Warning	LIX	Hancock, Harrison, Pearl River	41 min
Mar 27, 8:10 AM CDT	Special Weather Statement	LIX	Hancock, Harrison	65 min
Mar 27, 8:42 AM CDT	Severe Thunderstorm Warning	LIX	Harrison, Jackson	48 min
Mar 27, 9:24 AM CDT	Severe Thunderstorm Warning	LIX	Jackson	21 min
Mar 27, 11:04 AM CDT	Special Weather Statement	LIX	Harrison	41 min
Mar 27, 12:11 PM CDT	Severe Thunderstorm Warning	LIX	Jackson	49 min

Nearby

Severe Thunderstorm Warnings in Mississippi, 2023 Every severe thunderstorm warning in 2023

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.