Alert archive / Louisiana / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 94, NWS New Orleans, LA

July 16, 2020West Feliciana Parish, Louisiana

NWS New Orleans, LA issued this severe thunderstorm warning at Jul 16, 2020, 2:35 PM CDT for West Feliciana Parish, Louisiana. It was in force for 25 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: Jul 16, 2020, 2:35 PM CDT (19:35 UTC)
Expired: Jul 16, 2020, 3:00 PM CDT
In force: 25 min
Issued by: NWS New Orleans, LA
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

County West Feliciana Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 7.6 hours before the alert went out and 179 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: 216 J/kg
Mixed-layer CIN: -124 J/kg
Mixed-layer LCL: 856 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 48 m²/s²
0-3 km storm-relative helicity: 97 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.4

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 Jul 16, 12:32 PM CDT, 2 hours 3 minutes earlier.

Area forecast discussion, Jul 16, 12:32 PM CDT, 2 hours 3 minutes before

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In the hours before

Special weather statement, Jul 16, 12:13 PM CDT, 2 hours 22 minutes before

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Special weather statement, Jul 16, 12:34 PM CDT, 2 hours 1 minute before

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Special weather statement, Jul 16, 1:25 PM CDT, 1 hour 10 minutes before

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Special weather statement, Jul 16, 2:18 PM CDT, 17 minutes before

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Special weather statement, Jul 16, 2:19 PM CDT, 16 minutes before

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Special weather statement, Jul 16, 2:24 PM CDT, 11 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
Jul 15, 7:02 PM CDT	Severe Thunderstorm Warning	LIX	Saint Tammany, Tangipahoa, Washington	28 min
Jul 15, 7:19 PM CDT	Areal Flood Advisory	LIX	Jefferson, Orleans, Plaquemines, Saint Bernard	3 hr
Jul 15, 7:30 PM CDT	Severe Thunderstorm Warning	LIX	Saint John the Baptist, Saint Tammany, Tangipahoa, Washington	45 min
Jul 15, 7:37 PM CDT	Special Marine Warning	LIX		83 min
Jul 15, 7:53 PM CDT	Special Weather Statement	LIX	Orleans, Saint Tammany	52 min
Jul 15, 8:01 PM CDT	Severe Thunderstorm Warning	LIX	Saint Tammany	14 min
Jul 15, 8:30 PM CDT	Severe Thunderstorm Warning	LIX	Ascension, Jefferson, Livingston, Saint Charles, Saint James, Saint John the Baptist and 1 more	45 min
Jul 15, 8:42 PM CDT	Tornado Warning	LIX	Saint Charles, Saint John the Baptist	18 min
Jul 15, 9:10 PM CDT	Special Marine Warning	LIX		20 min
Jul 15, 9:15 PM CDT	Severe Thunderstorm Warning	LIX	Jefferson, Lafourche, Saint Charles, Saint John the Baptist, Terrebonne	45 min
Jul 15, 9:19 PM CDT	Special Weather Statement	LIX	Assumption, Saint James	26 min
Jul 15, 10:05 PM CDT	Special Weather Statement	LIX	Lafourche	40 min
Jul 16, 7:14 AM CDT	Special Marine Warning	LIX		31 min
Jul 16, 8:38 AM CDT	Special Marine Warning	LIX		37 min
Jul 16, 8:40 AM CDT	Special Marine Warning	LIX		35 min
Jul 16, 8:55 AM CDT	Areal Flood Advisory	LIX	Saint Tammany	2 hr
Jul 16, 9:09 AM CDT	Special Marine Warning	LIX		36 min
Jul 16, 9:33 AM CDT	Special Weather Statement	LIX	Orleans, Saint John the Baptist	27 min
Jul 16, 9:35 AM CDT	Special Marine Warning	LIX		25 min
Jul 16, 10:02 AM CDT	Special Weather Statement	LIX	Ascension, Saint Charles, Saint John the Baptist	28 min
Jul 16, 10:08 AM CDT	Areal Flood Advisory	LIX	Jefferson, Orleans, Plaquemines, Saint Bernard	112 min
Jul 16, 10:39 AM CDT	Special Marine Warning	LIX		36 min
Jul 16, 10:41 AM CDT	Special Weather Statement	LIX	Jefferson, Lafourche	64 min
Jul 16, 11:13 AM CDT	Special Marine Warning	LIX		47 min
Jul 16, 11:19 AM CDT	Areal Flood Advisory	LIX	Jefferson, Saint Charles, Saint John the Baptist	116 min
Jul 16, 11:42 AM CDT	Special Weather Statement	LIX	Saint John the Baptist, Tangipahoa	48 min
Jul 16, 11:52 AM CDT	Tornado Warning	LIX	Saint John the Baptist	8 min
Jul 16, 12:13 PM CDT	Special Weather Statement	LIX	Livingston, Saint James, Saint John the Baptist	32 min
Jul 16, 12:26 PM CDT	Areal Flood Advisory	LIX	Ascension, East Baton Rouge, Livingston	2 hr
Jul 16, 12:34 PM CDT	Special Weather Statement	LIX	Ascension, Livingston	26 min
Jul 16, 1:25 PM CDT	Special Weather Statement	LIX	East Baton Rouge, East Feliciana, Iberville, West Baton Rouge	35 min
Jul 16, 1:39 PM CDT	Severe Thunderstorm Warning	LIX	East Baton Rouge, East Feliciana	36 min
Jul 16, 1:59 PM CDT	Areal Flood Advisory	LIX	East Baton Rouge, East Feliciana, Saint Helena, West Feliciana	61 min
Jul 16, 2:18 PM CDT	Special Weather Statement	LIX	East Feliciana	27 min
Jul 16, 2:19 PM CDT	Special Weather Statement	LIX	East Feliciana	26 min
Jul 16, 2:39 PM CDT	Areal Flood Advisory	LIX	East Feliciana, Saint Helena, West Feliciana	53 min
Jul 16, 3:06 PM CDT	Special Weather Statement	LIX	Pointe Coupee, West Feliciana	54 min
Jul 16, 3:51 PM CDT	Special Weather Statement	LIX	Pointe Coupee	24 min
Jul 15, 7:34 PM CDT	Special Weather Statement	LIX	Pike, Walthall	26 min
Jul 16, 2:24 PM CDT	Special Weather Statement	LIX	Wilkinson	51 min

Nearby

Severe Thunderstorm Warnings in Louisiana, 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.