Alert archive / Louisiana / Special Weather Statements in 2017

Special Weather Statement, NWS New Orleans, LA

March 7, 2017Saint Tammany Parish, Louisiana

NWS New Orleans, LA issued this special weather statement at Mar 7, 2017, 5:39 PM CST for Saint Tammany Parish, Louisiana. It was in force for 36 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 7, 2017, 5:39 PM CST (23:39 UTC)
Expired: Mar 7, 2017, 6:15 PM CST
In force: 36 min
Issued by: NWS New Orleans, LA

County Saint Tammany Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 12:00Z, 11.7 hours before the alert went out and 35 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: 85 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 511 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 207 m²/s²
0-3 km storm-relative helicity: 318 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 7, 3:15 PM CST, 2 hours 24 minutes earlier.

Area forecast discussion, Mar 7, 3:15 PM CST, 2 hours 24 minutes before

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Hazardous weather outlook, Mar 7, 4:28 PM CST, 1 hour 11 minutes before

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In the hours before

Special weather statement, Mar 7, 3:28 PM CST, 2 hours 11 minutes before

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Special weather statement, Mar 7, 3:50 PM CST, 1 hour 49 minutes before

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Special weather statement, Mar 7, 4:46 PM CST, 53 minutes before

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Special weather statement, Mar 7, 4:52 PM CST, 47 minutes before

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Special weather statement, Mar 7, 5:32 PM CST, 7 minutes before

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Special weather statement, Mar 7, 5:39 PM CST, 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 6, 6:04 PM CST	Coastal Flood Advisory	LIX	Saint Bernard	4 hr
Mar 7, 9:37 AM CST	Small Craft Advisory	LIX		6 hr
Mar 7, 2:30 PM CST	Special Weather Statement	LIX	West Feliciana	60 min
Mar 7, 2:53 PM CST	Severe Thunderstorm Warning	LIX	East Baton Rouge, East Feliciana, Saint Helena, West Feliciana	22 min
Mar 7, 3:28 PM CST	Special Weather Statement	LIX	East Feliciana, Pointe Coupee, Saint Helena	32 min
Mar 7, 3:34 PM CST	Small Craft Advisory	LIX		23 hr
Mar 7, 3:50 PM CST	Special Weather Statement	LIX	Washington	55 min
Mar 7, 4:46 PM CST	Special Weather Statement	LIX	Washington	44 min
Mar 7, 4:52 PM CST	Special Weather Statement	LIX	East Baton Rouge, West Baton Rouge	38 min
Mar 7, 1:36 PM CST	Special Weather Statement	LIX	Wilkinson	54 min
Mar 7, 5:32 PM CST	Special Weather Statement	LIX	Pearl River	28 min

Nearby

Special Weather Statements in Louisiana, 2017 Every special weather statement in 2017

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.