Alert archive / Louisiana / Severe Thunderstorm Warnings in 2014
Severe Thunderstorm Warning 26, NWS New Orleans, LA
NWS New Orleans, LA issued this severe thunderstorm warning at Apr 6, 2014, 10:17 PM CDT for 5 parishes in Louisiana. It was in force for 58 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 6, 2014, 10:17 PM CDT (03:17 UTC)
- Expired
- Apr 6, 2014, 11:15 PM CDT
- In force
- 58 min
- Issued by
- NWS New Orleans, LA
- Area
- Storm-based polygon
Counties Ascension Parish, LA, East Baton Rouge Parish, LA, Iberville Parish, LA, Livingston Parish, LA, West Baton Rouge Parish, LA
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 6, 6:56 PM CDT | Tornado Watch | SPC | 8 hr |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 3.3 hours before the alert went out and 133 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
- 1102 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 542 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 330 m²/s²
- 0-3 km storm-relative helicity
- 422 m²/s²
- Significant tornado parameter
- 2.7
- Supercell composite
- 11.7
What forecasters said that day
The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Apr 6, 7:41 PM CDT, 2 hours 36 minutes earlier.
Area forecast discussion, Apr 6, 7:41 PM CDT, 2 hours 36 minutes before
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</html>Hazardous weather outlook, Apr 6, 7:17 PM CDT, 3 hours before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NEW ORLEANS LA 717 PM CDT SUN APR 6 2014 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>082-071230- LAKE PONTCHARTRAIN AND LAKE MAUREPAS-MISSISSIPPI SOUND- LAKE BORGNE-CHANDELEUR SOUND-BRETON SOUND- COASTAL WATERS FROM PORT FOURCHON TO LOWER ATCHAFALAYA RIVER OUT 20 NM- COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER TO PORT FOURCHON OUT 20 NM- COASTAL WATERS FROM BOOTHVILLE LA TO THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER OUT 20 NM- COASTAL WATERS FROM PASCAGOULA MS TO STAKE ISLAND LA OUT 20 NM- COASTAL WATERS FROM PORT FOURCHON TO LOWER ATCHAFALAYA RIVER FROM 20 TO 60 NM- COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER TO PORT FOURCHON FROM 20 TO 60 NM- COASTAL WATERS FROM STAKE ISLAND LA TO THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER FROM 20 TO 60 NM- COASTAL WATERS FROM PASCAGOULA MS TO STAKE ISLAND LA FROM 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- 717 PM CDT SUN APR 6 2014 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST LOUISIANA...SOUTH MISSISSIPPI AND THE ADJACENT COASTAL WATERS. .DAY ONE...TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS THE ENTIRE OUTLOOK AREA TONIGHT. THE PRIMARY THREAT WILL BE LARGE HAIL AND STRONG WIND GUSTS FROM THE STRONGEST STORMS. AN ISOLATED STRONG TORNADO OR TWO WILL BE POSSIBLE ACROSS THE AREA TONIGHT. A TORNADO WATCH IS IN EFFECT FOR ALL OF SOUTHEAST LOUISIANA AND SOUTHERN MISSISSIPPI...INCLUDING THE TIDAL LAKES AND SOUNDS UNTIL 3 AM MONDAY MORNING. A FLASH FLOOD WATCH IS IN EFFECT TONIGHT. HEAVY RAINFALL WITH ACCUMULATIONS GENERALLY BETWEEN 1 TO 3 INCHES WITH LOCALLY HIGHER AMOUNTS TO AROUND 5 INCHES ARE POSSIBLE. THE PEARL RIVER REMAINS ABOVE FLOOD STAGE NEAR BOGALUSA AND PEARL RIVER. IF HEAVY RAINFALL MATERIALIZES AS ANTICIPATED...OTHER AREA RIVERS AND STREAMS WILL ALSO SWELL TOWARD FLOOD LEVELS OVERNIGHT. REFER TO THE LATEST RIVER WARNINGS AND STATEMENTS FOR DETAILS. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY THE RISK OF SEVERE THUNDERSTORMS WILL LINGER INTO EARLY MONDAY MORNING BUT WILL END FROM WEST TO EAST WITH THE PASSAGE OF A COLD FRONT. SOME STORMS MAY BECOME STRONG TO SEVERE MAINLY IN A SQUALL LINE ASSOCIATED WITH THE FRONTAL PASSAGE. THE PRIMARY THREAT WOULD BE DAMAGING WIND GUSTS WITH THE SQUALL LINE. HEAVY RAINFALL WILL ALSO REMAIN A CONCERN UNTIL THE COLD FRONT PASSES THROUGH THE OUTLOOK AREA. A FLASH FLOOD WATCH IS IN EFFECT THROUGH 1 PM CDT MONDAY. SEVERAL AREA RIVERS WILL SEE RISES FOLLOWING THE ANTICIPATED RAINFALL. PLEASE REFER TO THE LATEST RIVER FLOOD FORECASTS... WARNINGS AND STATEMENTS FOR DETAILS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL BE NEEDED THIS EVENING THROUGH THE OVERNIGHT HOURS FOR THE ENTIRE OUTLOOK AREA. THE OZONE AMATEUR RADIO NETWORK WILL BE ACTIVATED THIS EVENING. EMERGENCY MANAGEMENT AGENCIES AND FIRST RESPONDER DISPATCHERS ARE REQUESTED TO FORWARD ANY SEVERE WEATHER REPORTS PROMPTLY TO THE NATIONAL WEATHER SERVICE OFFICE IN SLIDELL.
In the hours before
Special weather statement, Apr 6, 9:55 PM CDT, 22 minutes before
LAZ046>048-070400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NEW ORLEANS LA 955 PM CDT SUN APR 6 2014 ...CLUSTER OF STRONG THUNDERSTORMS MOVING NORTHEAST AFFECTING WEST BATON ROUGE PARISH...EAST BATON ROUGE PARISH...IBERVILLE PARISH... AT 953 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A CLUSTER OF STRONG THUNDERSTORMS ABOUT 46 MILES SOUTHWEST OF BAYOU SORREL...MOVING NORTHEAST AT 55 MPH. THE CLUSTER OF STRONG THUNDERSTORMS WILL AFFECT AREAS IN AND AROUND...BAYOU SORREL...PLAQUEMINE...ADDIS...BRUSLY...PORT ALLEN... OAK HILLS PLACE AND GARDERE THE PRIMARY THREATS FROM THESE STORMS ARE SUB SEVERE HAIL UP TO NICKEL SIZE AND WIND GUSTS 35 TO 45 MPH...WHICH COULD DOWN TREE LIMBS AND BLOW AROUND UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE HOME OR BUILDING UNTIL THESE STORMS HAVE PASSED. A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM CDT MONDAY MORNING FOR SOUTHEAST LOUISIANA AND SOUTHEASTERN MISSISSIPPI. BE PREPARED TO TAKE QUICK ACTION IF A WARNING IS ISSUED. STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE LOCAL MEDIA OUTLETS FOR FURTHER DETAILS OR UPDATES FROM THE NATIONAL WEATHER SERVICE.
The office that day
Everything else NWS New Orleans, LA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 6, 11:23 PM CDT | Severe Thunderstorm Warning | LIX | East Baton Rouge, Livingston | 37 min |
| Apr 6, 11:43 PM CDT | Severe Thunderstorm Warning | LIX | East Baton Rouge, Iberville, West Baton Rouge | 47 min |
| Apr 7, 12:36 AM CDT | Severe Thunderstorm Warning | LIX | Tangipahoa, Washington | 54 min |
| Apr 7, 12:42 AM CDT | Tornado Warning | LIX | Tangipahoa, Washington | 48 min |
| Apr 7, 1:41 AM CDT | Areal Flood Advisory | LIX | Ascension, Assumption, Livingston, Saint James, Saint John the Baptist, Tangipahoa | 64 min |
| Apr 7, 2:51 AM CDT | Areal Flood Advisory | LIX | Ascension, East Baton Rouge, Iberville, Livingston, Saint Helena, Tangipahoa and 2 more | 114 min |
| Apr 7, 3:53 AM CDT | Small Craft Advisory | LIX | 9 hr | |
| Apr 7, 4:23 AM CDT | Special Marine Warning | LIX | 37 min | |
| Apr 7, 4:44 AM CDT | Special Marine Warning | LIX | 61 min | |
| Apr 7, 5:32 AM CDT | Special Marine Warning | LIX | 118 min | |
| Apr 7, 5:45 AM CDT | Special Marine Warning | LIX | 90 min | |
| Apr 7, 6:31 AM CDT | Special Marine Warning | LIX | 89 min | |
| Apr 7, 7:50 AM CDT | Special Marine Warning | LIX | 115 min | |
| Apr 7, 3:58 PM CDT | Small Craft Advisory | LIX | 42 hr |
Nearby
Severe Thunderstorm Warnings in Louisiana, 2014Every severe thunderstorm warning in 2014
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.