Alert archive / Louisiana / Flood Watches in 2006

Flood Watch 2, NWS New Orleans, LA

October 18, 20067 parishes in Louisiana; 4 counties in Mississippi

NWS New Orleans, LA issued this flood watch at Oct 18, 2006, 4:36 PM CDT for 7 parishes in Louisiana; 4 counties in Mississippi. It was in force for 25 hr.

The area

The counties it named.

The facts

Issued: Oct 18, 2006, 4:36 PM CDT (21:36 UTC)
Expired: Oct 19, 2006, 6:00 PM CDT
In force: 25 hr
Issued by: NWS New Orleans, LA
Flood severity: None

Counties East Baton Rouge Parish, LA, East Feliciana Parish, LA, Iberville Parish, LA, Pointe Coupee Parish, LA, Saint Helena Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Amite County, MS, Pike County, MS, Walthall County, MS, Wilkinson County, MS

The nearest sounding before it

Lake Charles Mun, LA (KLCH), launched 12:00Z, 9.6 hours before the alert went out and 224 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: 2043 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 463 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 101 m²/s²
0-3 km storm-relative helicity: 121 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 5.5

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flood watch 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 flood watch went out at Oct 18, 4:12 PM CDT, 24 minutes earlier.

Area forecast discussion, Oct 18, 4:12 PM CDT, 24 minutes before

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Hazardous weather outlook, Oct 18, 12:12 PM CDT, 4 hours 24 minutes before

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In the hours before

Special weather statement, Oct 18, 1:52 PM CDT, 2 hours 44 minutes before

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Special weather statement, Oct 18, 2:31 PM CDT, 2 hours 5 minutes before

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Special weather statement, Oct 18, 3:31 PM CDT, 1 hour 5 minutes before

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Special weather statement, Oct 18, 4:28 PM CDT, 8 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
Oct 17, 9:46 PM CDT	Dense Fog Advisory	LIX	Assumption, East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, Saint Bernard and 6 more	11 hr
Oct 18, 2:11 PM CDT	Special Marine Warning	LIX		64 min
Oct 18, 3:42 PM CDT	Special Marine Warning	LIX		63 min

Nearby

Flood Watches in Louisiana, 2006 Flood Watches in Mississippi, 2006 Every flood watch in 2006

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.