Alert archive / Louisiana / Freeze Warnings in 2008

Freeze Warning 3, NWS New Orleans, LA

January 19, 20084 parishes in Louisiana

NWS New Orleans, LA issued this freeze warning at Jan 19, 2008, 3:30 PM CST for 4 parishes in Louisiana. It took effect at Jan 20, 2008, 12:00 AM CST. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jan 19, 2008, 3:30 PM CST (21:30 UTC)
In effect from: Jan 20, 2008, 12:00 AM CST
Expired: Jan 20, 2008, 9:00 AM CST
In force: 9 hr
Issued by: NWS New Orleans, LA

Counties Assumption Parish, LA, Saint Bernard Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA

The nearest sounding before it

Jackson, MS (KJAN), launched 12:00Z, 9.5 hours before the alert went out and 264 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: 569 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: -64 m²/s²
0-3 km storm-relative helicity: 63 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this freeze 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 freeze warning went out at Jan 19, 2:56 PM CST, 34 minutes earlier.

Area forecast discussion, Jan 19, 2:56 PM CST, 34 minutes before

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Hazardous weather outlook, Jan 19, 12:05 PM CST, 3 hours 25 minutes before

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        The site you requested is temporarily down for maintenance or an unexpected outage.
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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
Jan 19, 4:39 AM CST	Freeze Watch	LIX	Assumption, Saint Bernard, Saint James, Saint John the Baptist	11 hr
Jan 19, 5:31 AM CST	Wind Advisory	LIX	Saint Bernard, Saint John the Baptist	5 hr
Jan 19, 5:35 AM CST	Special Marine Warning	LIX		115 min
Jan 19, 7:18 AM CST	Winter Weather Advisory	LIX	East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, Saint Helena, Washington and 2 more	3 hr
Jan 19, 7:27 AM CST	Special Marine Warning	LIX		2 hr

Nearby

Freeze Warnings in Louisiana, 2008 Every freeze warning in 2008

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.