Alert archive / Louisiana / Wind Advisories in 2019
Wind Advisory 9, NWS New Orleans, LA
NWS New Orleans, LA issued this wind advisory at Oct 31, 2019, 3:43 AM CDT for 4 parishes in Louisiana. It took effect at Oct 31, 2019, 4:00 AM CDT. It was in force for 18 hr.
The area
The counties it named.
The facts
- Issued
- Oct 31, 2019, 3:43 AM CDT (08:43 UTC)
- In effect from
- Oct 31, 2019, 4:00 AM CDT
- Expired
- Oct 31, 2019, 10:00 PM CDT
- In force
- 18 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
Slidell Radar S, LA (KSIL), launched 00:00Z, 8.7 hours before the alert went out and 86 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
- 848 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 695 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 73 m²/s²
- 0-3 km storm-relative helicity
- 82 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.0
What forecasters said that day
The local office's own words before this wind advisory 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 wind advisory went out at Oct 31, 1:14 AM CDT, 2 hours 29 minutes earlier.
Area forecast discussion, Oct 31, 1:14 AM CDT, 2 hours 29 minutes before
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</html>Hazardous weather outlook, Oct 30, 6:44 PM CDT, 8 hours 59 minutes before
Hazardous Weather Outlook National Weather Service New Orleans LA 644 PM CDT Wed Oct 30 2019 GMZ530-532-534-536-538-550-552-555-557-570-572-575-577-LAZ034>037- 039-040-046>050-056>072-MSZ068>071-077-080>082-311145- Lake Pontchartrain and Lake Maurepas-Mississippi Sound- Lake Borgne-Chandeleur Sound-Breton Sound- Coastal Waters from Port Fourchon LA to Lower Atchafalaya River LA out 20 nm- Coastal waters from the Southwest Pass of the Mississippi River to Port Fourchon Louisiana out 20 NM- Coastal Waters from Boothville LA to Southwest Pass of the Mississippi River out 20 nm- Coastal waters from Pascagoula Mississippi to Stake Island out 20 NM- Coastal waters from Port Fourchon Louisiana to Lower Atchafalaya River LA from 20 to 60 NM- Coastal waters from Southwest Pass of the Mississippi River to Port Fourchon Louisiana from 20 to 60 NM- Coastal Waters from Stake Island LA to Southwest Pass of the Mississippi River from 20 to 60 nm- Coastal waters from Pascagoula Mississippi to Stake Island Louisiana out 20 to 60 NM-Pointe Coupee-West Feliciana- East Feliciana-St. Helena-Washington-St. Tammany-Iberville- West Baton Rouge-East Baton Rouge-Ascension-Livingston-Assumption- St. James-St. John The Baptist-Upper Lafourche-St. Charles- Upper Jefferson-Orleans-Upper Plaquemines-Upper St. Bernard- Upper Terrebonne-Lower Terrebonne-Lower Lafourche-Lower Jefferson- Lower Plaquemines-Lower St. Bernard-Northern Tangipahoa- Southern Tangipahoa-Wilkinson-Amite-Pike-Walthall-Pearl River- Hancock-Harrison-Jackson- 644 PM CDT Wed Oct 30 2019 This Hazardous Weather Outlook is for portions of Southeast Louisiana...South Mississippi and the adjacent coastal waters. .DAY ONE...Tonight There is marginal risk of severe thunderstorms through early Thursday morning ahead of a cold front. One or two storms may approach severe levels just ahead of the cold front. The threat will end with frontal passage. There is a marginal risk of heavy rainfall for most of the forecast area. Isolated flash flooding is possible. .DAYS TWO THROUGH SEVEN...Thursday through Tuesday Hazardous marine winds will develop in coastal waters Thursday through Friday. Occasional gale force gusts will be possible. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed through Thursday morning. 24/RR
In the hours before
Special weather statement, Oct 30, 10:41 PM CDT, 5 hours 2 minutes before
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</html>Special weather statement, Oct 30, 11:06 PM CDT, 4 hours 37 minutes before
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</html>Special weather statement, Oct 30, 11:56 PM CDT, 3 hours 47 minutes before
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</html>Special weather statement, Oct 31, 2:15 AM CDT, 1 hour 28 minutes before
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</html>Special weather statement, Oct 31, 2:26 AM CDT, 1 hour 17 minutes before
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</html>Special weather statement, Oct 31, 3:00 AM CDT, 43 minutes before
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</html>The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 30, 7:10 PM CDT | Special Weather Statement | LIX | West Feliciana | 50 min |
| Oct 30, 9:23 PM CDT | Special Weather Statement | LIX | East Feliciana | 37 min |
| Oct 30, 9:24 PM CDT | Special Weather Statement | LIX | East Baton Rouge | 36 min |
| Oct 30, 9:35 PM CDT | Special Weather Statement | LIX | East Baton Rouge, Iberville, West Baton Rouge | 40 min |
| Oct 30, 10:41 PM CDT | Special Weather Statement | LIX | Ascension, Assumption, Livingston, Saint James | 49 min |
| Oct 30, 11:56 PM CDT | Special Weather Statement | LIX | Ascension, Livingston, Saint James, Tangipahoa, Washington | 64 min |
| Oct 31, 2:15 AM CDT | Special Weather Statement | LIX | Assumption, Saint James | 45 min |
| Oct 31, 2:26 AM CDT | Special Weather Statement | LIX | Saint James | 34 min |
| Oct 31, 3:00 AM CDT | Special Weather Statement | LIX | Saint Charles | 45 min |
| Oct 31, 4:18 AM CDT | Special Weather Statement | LIX | Lafourche, Orleans | 42 min |
| Oct 31, 5:08 AM CDT | Special Weather Statement | LIX | Jefferson | 37 min |
| Oct 31, 6:29 AM CDT | Special Marine Warning | LIX | 61 min | |
| Oct 31, 7:19 AM CDT | Special Marine Warning | LIX | 41 min | |
| Oct 31, 7:33 AM CDT | Special Marine Warning | LIX | 57 min | |
| Oct 30, 8:04 PM CDT | Special Weather Statement | LIX | Wilkinson | 26 min |
| Oct 30, 8:26 PM CDT | Tornado Warning | LIX | Amite | 19 min |
| Oct 30, 8:58 PM CDT | River Flood Warning | LIX | Jackson | 37 hr |
| Oct 30, 9:21 PM CDT | Special Weather Statement | LIX | Amite | 24 min |
| Oct 30, 11:06 PM CDT | Special Weather Statement | LIX | Walthall | 24 min |
| Oct 31, 7:30 AM CDT | Special Weather Statement | LIX | Jackson | 45 min |
| Oct 31, 9:01 AM CDT | River Flood Warning | LIX | Pearl River | 12 hr |
Nearby
Wind Advisories in Louisiana, 2019Every wind advisory in 2019
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.