Alert archive / Louisiana / Special Weather Statements in 2021

Special Weather Statement, NWS New Orleans, LA

March 24, 2021Plaquemines Parish, Louisiana

NWS New Orleans, LA issued this special weather statement at Mar 24, 2021, 4:36 AM CDT for Plaquemines Parish, Louisiana. It was in force for 39 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Mar 24, 2021, 4:36 AM CDT (09:36 UTC)
Expired: Mar 24, 2021, 5:15 AM CDT
In force: 39 min
Issued by: NWS New Orleans, LA

County Plaquemines Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 9.6 hours before the alert went out and 96 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 545 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: -54 m²/s²
0-3 km storm-relative helicity: -336 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Mar 24, 4:04 AM CDT, 32 minutes earlier.

Area forecast discussion, Mar 24, 4:04 AM CDT, 32 minutes before

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In the hours before

Special weather statement, Mar 24, 2:26 AM CDT, 2 hours 10 minutes before

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Special weather statement, Mar 24, 2:40 AM CDT, 1 hour 56 minutes before

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Local storm report, Mar 24, 2:43 AM CDT, 1 hour 53 minutes before

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Local storm report, Mar 24, 2:44 AM CDT, 1 hour 52 minutes before

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Special weather statement, Mar 24, 3:59 AM CDT, 37 minutes before

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Special weather statement, Mar 24, 4:36 AM CDT, 0 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 23, 7:35 PM CDT	Areal Flood Advisory	LIX	Jefferson, Orleans, Plaquemines, Saint Bernard, Saint Charles	5 hr
Mar 23, 9:26 PM CDT	Special Marine Warning	LIX		64 min
Mar 24, 12:39 AM CDT	Special Marine Warning	LIX		2 hr
Mar 24, 12:44 AM CDT	Special Marine Warning	LIX		16 min
Mar 24, 2:10 AM CDT	Special Weather Statement	LIX	Jefferson	65 min
Mar 24, 2:16 AM CDT	Severe Thunderstorm Warning	LIX	Jefferson	14 min
Mar 24, 2:26 AM CDT	Special Weather Statement	LIX	Lafourche, Terrebonne	64 min
Mar 24, 2:40 AM CDT	Special Weather Statement	LIX	Plaquemines	65 min
Mar 24, 2:51 AM CDT	Special Marine Warning	LIX		114 min
Mar 24, 3:04 AM CDT	Flash Flood Warning	LIX	Terrebonne	3 hr
Mar 24, 3:59 AM CDT	Special Weather Statement	LIX	Jefferson	61 min
Mar 24, 4:14 AM CDT	Areal Flood Advisory	LIX	Saint Tammany, Washington	3 hr
Mar 24, 4:25 AM CDT	Special Marine Warning	LIX		35 min
Mar 24, 4:41 AM CDT	Severe Thunderstorm Warning	LIX	Plaquemines	19 min
Mar 24, 4:59 AM CDT	Special Marine Warning	LIX		2 hr
Mar 24, 2:47 PM CDT	Wind Advisory	LIX	Assumption, East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, Saint Bernard and 7 more	25 hr
Mar 24, 3:43 PM CDT	Special Weather Statement	LIX	West Feliciana	32 min
Mar 24, 3:10 PM CDT	Special Weather Statement	LIX	Amite	35 min
Mar 24, 3:57 PM CDT	Special Weather Statement	LIX	Pike	33 min
Mar 24, 4:08 PM CDT	Special Weather Statement	LIX	Amite	37 min
Mar 24, 4:32 PM CDT	Special Weather Statement	LIX	Wilkinson	43 min

Nearby

Special Weather Statements in Louisiana, 2021 Every special weather statement in 2021

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.