Alert archive / Louisiana / Freeze Warnings in 2018
Freeze Warning 12, NWS New Orleans, LA
NWS New Orleans, LA issued this freeze warning at Nov 26, 2018, 4:42 AM CST for 8 parishes in Louisiana; 5 counties in Mississippi. It took effect at Nov 27, 2018, 12:00 AM CST. It was in force for 8 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
- Nov 26, 2018, 4:42 AM CST (10:42 UTC)
- In effect from
- Nov 27, 2018, 12:00 AM CST
- Expired
- Nov 27, 2018, 8:00 AM CST
- In force
- 8 hr
- Issued by
- NWS New Orleans, LA
Counties East Baton Rouge Parish, LA, East Feliciana Parish, LA, Pointe Coupee Parish, LA, Saint Helena Parish, LA, Tangipahoa Parish, LA, Washington Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA, Amite County, MS, Pearl River County, MS, Pike County, MS, Walthall County, MS, Wilkinson County, MS
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 10.7 hours before the alert went out and 122 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.
- Mixed-layer CAPE
- 1346 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 575 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 116 m²/s²
- 0-3 km storm-relative helicity
- 209 m²/s²
- Significant tornado parameter
- 1.3
- Supercell composite
- 5.3
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 Nov 25, 3:49 PM CST, 12 hours 53 minutes earlier.
Area forecast discussion, Nov 25, 3:49 PM CST, 12 hours 53 minutes before
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</html>Hazardous weather outlook, Nov 25, 5:32 PM CST, 11 hours 10 minutes before
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Freeze Warnings in Louisiana, 2018Freeze Warnings in Mississippi, 2018Every freeze warning in 2018
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.