Alert archive / Louisiana / Special Weather Statements in 2021

Special Weather Statement, NWS New Orleans, LA

June 22, 2021Saint John the Baptist Parish, Louisiana

NWS New Orleans, LA issued this special weather statement at Jun 22, 2021, 4:02 PM CDT for Saint John the Baptist Parish, Louisiana. It was in force for 28 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: Jun 22, 2021, 4:02 PM CDT (21:02 UTC)
Expired: Jun 22, 2021, 4:30 PM CDT
In force: 28 min
Issued by: NWS New Orleans, LA

County Saint John the Baptist Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 9.0 hours before the alert went out and 73 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: 962 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 812 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 62 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.0

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 Jun 22, 1:05 PM CDT, 2 hours 57 minutes earlier.

Area forecast discussion, Jun 22, 1:05 PM CDT, 2 hours 57 minutes before

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In the hours before

Local storm report, Jun 22, 2:16 PM CDT, 1 hour 46 minutes before

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Special weather statement, Jun 22, 4:02 PM CDT, 0 minutes before

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        Please try again in a few minutes.
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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
Jun 21, 7:56 PM CDT	Flood Watch	LIX	Assumption, Orleans, Saint Bernard, Saint James, Saint John the Baptist, Saint Tammany	6 min
Jun 21, 8:05 PM CDT	Flash Flood Watch	LIX	Assumption, Orleans, Saint Bernard, Saint James, Saint John the Baptist, Saint Tammany	23 hr
Jun 21, 8:18 PM CDT	Special Weather Statement	LIX	Orleans	27 min
Jun 21, 8:19 PM CDT	Special Marine Warning	LIX		41 min
Jun 21, 8:24 PM CDT	Special Marine Warning	LIX		66 min
Jun 21, 8:36 PM CDT	Special Weather Statement	LIX	West Feliciana	54 min
Jun 21, 9:01 PM CDT	Severe Thunderstorm Warning	LIX	East Feliciana, Saint Helena, West Feliciana	29 min
Jun 21, 9:31 PM CDT	Severe Thunderstorm Warning	LIX	East Feliciana, Saint Helena, Tangipahoa	44 min
Jun 21, 9:49 PM CDT	Special Marine Warning	LIX		26 min
Jun 21, 10:11 PM CDT	Special Weather Statement	LIX	Tangipahoa, Washington	34 min
Jun 21, 10:14 PM CDT	Special Marine Warning	LIX		61 min
Jun 22, 5:18 AM CDT	Special Marine Warning	LIX		57 min
Jun 22, 6:16 AM CDT	Special Marine Warning	LIX		59 min
Jun 22, 8:10 AM CDT	Special Marine Warning	LIX		25 min
Jun 22, 12:38 PM CDT	Special Marine Warning	LIX		67 min
Jun 22, 4:54 PM CDT	Areal Flood Advisory	LIX	Ascension, East Baton Rouge, Livingston	111 min
Jun 21, 8:48 PM CDT	Special Weather Statement	LIX	Hancock	42 min
Jun 21, 9:33 PM CDT	Special Weather Statement	LIX	Harrison	42 min
Jun 21, 9:44 PM CDT	Flash Flood Warning	LIX	Hancock, Harrison	2 hr
Jun 21, 10:09 PM CDT	Special Weather Statement	LIX	Jackson	36 min
Jun 21, 10:27 PM CDT	Flash Flood Warning	LIX	Jackson	93 min
Jun 22, 6:00 AM CDT	River Flood Warning	LIX	Harrison	69 hr
Jun 22, 6:02 AM CDT	River Flood Warning	LIX	Harrison	47 hr
Jun 22, 9:39 AM CDT	River Flood Warning	LIX	Jackson	4 days
Jun 22, 5:10 PM CDT	Areal Flood Advisory	LIX	Harrison, Jackson	2 hr
Jun 22, 6:14 PM CDT	Flash Flood Warning	LIX	Harrison, Jackson	108 min
Jun 22, 6:32 PM CDT	Special Weather Statement	LIX	Harrison	28 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.