Alert archive / Louisiana / Wind Advisories in 2011
Wind Advisory 7, NWS New Orleans, LA
NWS New Orleans, LA issued this wind advisory at Apr 15, 2011, 3:52 PM CDT for 11 parishes in Louisiana. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Apr 15, 2011, 3:52 PM CDT (20:52 UTC)
- Expired
- Apr 15, 2011, 9:49 PM CDT
- In force
- 6 hr
- Issued by
- NWS New Orleans, LA
Counties Assumption Parish, LA, East Baton Rouge Parish, LA, East Feliciana Parish, LA, Iberville Parish, LA, Pointe Coupee Parish, LA, Saint Bernard Parish, LA, Saint Helena Parish, LA, Saint James Parish, LA, Saint John the Baptist Parish, LA, West Baton Rouge Parish, LA, West Feliciana Parish, LA
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 8.9 hours before the alert went out and 123 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
- 2339 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 499 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 325 m²/s²
- 0-3 km storm-relative helicity
- 504 m²/s²
- Significant tornado parameter
- 4.8
- Supercell composite
- 21.3
The text
As transmitted, in the capitals the NWS used until 2016.
264 WWUS74 KLIX 152052 NPWLIX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE NEW ORLEANS LA 352 PM CDT FRI APR 15 2011 ...STRONG SOUTHERLY WINDS WILL CONTINUE TO IMPACT PORTIONS OF SOUTHEAST LOUISIANA... .A STRONG PRESSURE DIFFERENCE BETWEEN AN AREA OF HIGH PRESSURE TO THE EAST AND A STRONG AREA OF LOW PRESSURE AND COLD FRONT TO THE NORTH AND WEST HAS RESULTED IN THE DEVELOPMENT OF STRONG SOUTHERLY WINDS OF 25 TO 30 MPH WITH GUSTS TO 40 MPH THIS AFTERNOON. THESE STRONG WINDS WILL CONTINUE INTO THE LATE EVENING HOURS BEFORE DROPPING TO BELOW 20 MPH. LAZ034>037-046>050-056>070-160500- /O.NEW.KLIX.WI.Y.0007.110415T2052Z-110416T0600Z/ POINTE COUPEE-WEST FELICIANA-EAST FELICIANA-ST. HELENA-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- INCLUDING THE CITIES OF...NEW ROADS...LIVONIA... ST. FRANCISVILLE...JACKSON...CLINTON...GREENSBURG...MONTPELIER... PLAQUEMINE...WHITE CASTLE...PORT ALLEN...ADDIS...BRUSLY... BATON ROUGE...GONZALES...DONALDSONVILLE...DENHAM SPRINGS... WALKER...PIERRE PART...LABADIEVILLE...PAINCOURTVILLE...LUTCHER... GRAMERCY...LAPLACE...RESERVE...THIBODAUX...RACELAND...LAROSE... DESTREHAN...NORCO...METAIRIE...KENNER...NEW ORLEANS... BELLE CHASSE...CHALMETTE...VIOLET...HOUMA...BAYOU CANE... CHAUVIN...DULAC...MONTEGUT...GALLIANO...CUT OFF...GOLDEN MEADOW... PORT SULPHUR...EMPIRE...YSCLOSKEY 352 PM CDT FRI APR 15 2011 ...WIND ADVISORY IN EFFECT UNTIL 1 AM CDT SATURDAY... THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT UNTIL 1 AM CDT SATURDAY. STRONG SOUTHERLY WINDS OF 25 TO 30 MPH WITH GUSTS TO 40 MPH WILL CONTINUE TO AFFECT THE AREA THROUGH THE LATE EVENING HOURS. WINDS WILL DROP TO AROUND 20 MPH AFTER A COLD FRONT PASSES THROUGH LATER TONIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ 32
3 follow-up statements
738 WWUS74 KLIX 152304 NPWLIX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE NEW ORLEANS LA 604 PM CDT FRI APR 15 2011 ...STRONG SOUTHERLY WINDS WILL CONTINUE TO IMPACT PORTIONS OF SOUTHEAST LOUISIANA... .A STRONG PRESSURE DIFFERENCE BETWEEN AN AREA OF HIGH PRESSURE TO THE EAST AND A STRONG AREA OF LOW PRESSURE AND COLD FRONT TO THE NORTH AND WEST HAS RESULTED IN THE DEVELOPMENT OF STRONG SOUTHERLY WINDS OF 25 TO 30 MPH WITH GUSTS TO 40 MPH THIS AFTERNOON. THESE STRONG WINDS WILL CONTINUE INTO THE LATE EVENING HOURS BEFORE DROPPING TO BELOW 20 MPH. LAZ034>037-046>050-160015- /O.CAN.KLIX.WI.Y.0007.000000T0000Z-110416T0600Z/ POINTE COUPEE-WEST FELICIANA-EAST FELICIANA-ST. HELENA-IBERVILLE- WEST BATON ROUGE-EAST BATON ROUGE-ASCENSION-LIVINGSTON- INCLUDING THE CITIES OF...NEW ROADS...LIVONIA... ST. FRANCISVILLE...JACKSON...CLINTON...GREENSBURG...MONTPELIER... PLAQUEMINE...WHITE CASTLE...PORT ALLEN...ADDIS...BRUSLY... BATON ROUGE...GONZALES...DONALDSONVILLE...DENHAM SPRINGS...WALKER 604 PM CDT FRI APR 15 2011 ...WIND ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS CANCELLED THE WIND ADVISORY. THE COLD FRONT HAS PUSHED TO THE EAST OF THESE AREAS...ALLOWING WINDS TO FALL BELOW ADVISORY LEVELS. WINDS WILL CONTINUE TO DROP TO AROUND 5 MPH THROUGH THE EVENING HOURS. THE WIND ADVISORY HAS BEEN CANCELLED DUE TO THESE LIGHTER WINDS. $$ LAZ056>070-160600- /O.CON.KLIX.WI.Y.0007.000000T0000Z-110416T0600Z/ 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- INCLUDING THE CITIES OF...PIERRE PART...LABADIEVILLE... PAINCOURTVILLE...LUTCHER...GRAMERCY...LAPLACE...RESERVE... THIBODAUX...RACELAND...LAROSE...DESTREHAN...NORCO...METAIRIE... KENNER...NEW ORLEANS...BELLE CHASSE...CHALMETTE...VIOLET... HOUMA...BAYOU CANE...CHAUVIN...DULAC...MONTEGUT...GALLIANO... CUT OFF...GOLDEN MEADOW...PORT SULPHUR...EMPIRE...YSCLOSKEY 604 PM CDT FRI APR 15 2011 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT SATURDAY... A WIND ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT SATURDAY. STRONG SOUTHERLY WINDS OF 25 TO 30 MPH WITH GUSTS TO 40 MPH WILL CONTINUE TO AFFECT THE AREA THROUGH THE LATE EVENING HOURS. WINDS WILL DROP TO AROUND 20 MPH AFTER A COLD FRONT PASSES THROUGH LATER TONIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ 32
248 WWUS74 KLIX 160050 NPWLIX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE NEW ORLEANS LA 750 PM CDT FRI APR 15 2011 ...STRONG SOUTHERLY WINDS WILL CONTINUE TO IMPACT PORTIONS OF SOUTHEAST LOUISIANA... .STRONG SOUTHERLY WINDS WILL CONTINUE TO AFFECT METRO NEW ORLEANS THROUGH THE LATE EVENING HOURS. FREQUENT WIND GUSTS TO AROUND 30 MPH CAN BE EXPECTED. LAZ056>059-065>067-160200- /O.CAN.KLIX.WI.Y.0007.000000T0000Z-110416T0600Z/ ASSUMPTION-ST. JAMES-ST. JOHN THE BAPTIST-UPPER LAFOURCHE- UPPER TERREBONNE-LOWER TERREBONNE-LOWER LAFOURCHE- INCLUDING THE CITIES OF...PIERRE PART...LABADIEVILLE... PAINCOURTVILLE...LUTCHER...GRAMERCY...LAPLACE...RESERVE... THIBODAUX...RACELAND...LAROSE...HOUMA...BAYOU CANE...CHAUVIN... DULAC...MONTEGUT...GALLIANO...CUT OFF...GOLDEN MEADOW 750 PM CDT FRI APR 15 2011 ...WIND ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS CANCELLED THE WIND ADVISORY. WINDS HAVE FALLEN BELOW ADVISORY LEVELS THIS EVENING ACROSS THIS AREA. WINDS ARE EXPECTED TO CONTINUE TO WEAKEN...AND SHOULD DROP TO AROUND 5 TO 10 MPH BY MIDNIGHT. $$ LAZ060>064-068>070-160600- /O.CON.KLIX.WI.Y.0007.000000T0000Z-110416T0600Z/ ST. CHARLES-UPPER JEFFERSON-ORLEANS-UPPER PLAQUEMINES- UPPER ST. BERNARD-LOWER JEFFERSON-LOWER PLAQUEMINES- LOWER ST. BERNARD- INCLUDING THE CITIES OF...DESTREHAN...NORCO...METAIRIE...KENNER... NEW ORLEANS...BELLE CHASSE...CHALMETTE...VIOLET...PORT SULPHUR... EMPIRE...YSCLOSKEY 750 PM CDT FRI APR 15 2011 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT SATURDAY... A WIND ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT SATURDAY. STRONG SOUTHERLY WINDS OF 25 TO 30 MPH WITH GUSTS TO 40 MPH WILL CONTINUE TO AFFECT THE AREA THROUGH THE LATE EVENING HOURS. WINDS WILL DROP TO AROUND 20 MPH AFTER A COLD FRONT PASSES THROUGH LATER TONIGHT. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$ 32
745 WWUS74 KLIX 160249 NPWLIX URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE NEW ORLEANS LA 949 PM CDT FRI APR 15 2011 ...WIND ADVISORY CANCELLED... .STRONG WINDS IN ADVANCE OF THE COLD FRONT HAVE WEAKENED...AND SHOULD GENERALLY REMAIN BELOW 20 MPH FOR THE REMAINDER OF THE NIGHT. LAZ060>064-068>070-160400- /O.CAN.KLIX.WI.Y.0007.000000T0000Z-110416T0600Z/ ST. CHARLES-UPPER JEFFERSON-ORLEANS-UPPER PLAQUEMINES- UPPER ST. BERNARD-LOWER JEFFERSON-LOWER PLAQUEMINES- LOWER ST. BERNARD- INCLUDING THE CITIES OF...DESTREHAN...NORCO...METAIRIE...KENNER... NEW ORLEANS...BELLE CHASSE...CHALMETTE...VIOLET...PORT SULPHUR... EMPIRE...YSCLOSKEY 949 PM CDT FRI APR 15 2011 ...WIND ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN NEW ORLEANS HAS CANCELLED THE WIND ADVISORY. WINDS OF 15 TO 20 MPH SHOULD GRADUALLY DIMINISH OVERNIGHT. $$
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 14, 9:24 PM CDT | Small Craft Advisory | LIX | 24 hr | |
| Apr 15, 2:54 PM CDT | Tornado Warning | LIX | Pointe Coupee, West Feliciana | 36 min |
| Apr 15, 3:26 PM CDT | Tornado Warning | LIX | East Feliciana, West Feliciana | 34 min |
| Apr 15, 3:45 PM CDT | Tornado Warning | LIX | East Feliciana, Saint Helena | 30 min |
| Apr 15, 3:55 PM CDT | Gale Warning | LIX | 6 hr | |
| Apr 15, 4:08 PM CDT | Severe Thunderstorm Warning | LIX | Ascension, East Baton Rouge, Iberville, Livingston, West Baton Rouge | 67 min |
| Apr 15, 4:12 PM CDT | Severe Thunderstorm Warning | LIX | East Feliciana, Saint Helena, Tangipahoa | 33 min |
| Apr 15, 4:56 PM CDT | Tornado Warning | LIX | Tangipahoa, Washington | 34 min |
| Apr 15, 5:01 PM CDT | Tornado Warning | LIX | Ascension, East Baton Rouge, Iberville, Livingston, Tangipahoa | 29 min |
| Apr 15, 5:22 PM CDT | Tornado Warning | LIX | Washington | 23 min |
| Apr 15, 5:42 PM CDT | Severe Thunderstorm Warning | LIX | Washington | 48 min |
Nearby
Wind Advisories in Louisiana, 2011Every wind advisory in 2011
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.