Alert archive / Louisiana / Special Weather Statements in 2016

Special Weather Statement, NWS New Orleans, LA

February 3, 2016Saint Tammany Parish, Louisiana

NWS New Orleans, LA issued this special weather statement at Feb 3, 2016, 12:13 AM CST for Saint Tammany Parish, Louisiana. It was in force for 62 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Feb 3, 2016, 12:13 AM CST (06:13 UTC)
Expired
Feb 3, 2016, 1:15 AM CST
In force
62 min
Issued by
NWS New Orleans, LA

County Saint Tammany Parish, LA

The nearest sounding before it

Slidell Radar S, LA (KSIL), launched 00:00Z, 6.2 hours before the alert went out and 49 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-pSkew-T log-p diagram, Slidell Radar S, LA at 00:00Z on 2016-02-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 864 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Slidell Radar S, LA at 00:00Z on 2016-02-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 239 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
864 J/kg
Mixed-layer CIN
-3 J/kg
Mixed-layer LCL
592 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
239 m²/s²
0-3 km storm-relative helicity
250 m²/s²
Significant tornado parameter
1.0
Supercell composite
5.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Feb 2, 10:31 PM CST, 1 hour 42 minutes earlier.

Area forecast discussion, Feb 2, 10:31 PM CST, 1 hour 42 minutes before
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Hazardous weather outlook, Feb 2, 10:16 PM CST, 1 hour 57 minutes before
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In the hours before

Special weather statement, Feb 2, 8:28 PM CST, 3 hours 45 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
828 PM CST TUE FEB 2 2016

LAZ034>036-046-030315-
WEST FELICIANA LA-IBERVILLE LA-EAST FELICIANA LA-POINTE COUPEE LA-
828 PM CST TUE FEB 2 2016

...SPECIAL WEATHER STATEMENT...

AT 828 PM CST...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
ATCHAFALAYA NATIONAL WILDLIFE REFUGE...OR NEAR KROTZ SPRINGS...MOVING
NORTHEAST AT 55 MPH.

HALF INCH HAIL WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
NEW ROADS...JACKSON...ST. FRANCISVILLE...LIVONIA...FORDOCHE...
MORGANZA...WAKEFIELD...LOTTIE AND SPILLMAN.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM CST FOR SOUTHEASTERN
LOUISIANA.

LAT...LON 3099 9132 3080 9110 3066 9131 3066 9133
      3065 9132 3044 9163 3050 9170 3050 9175
      3052 9173 3056 9176
TIME...MOT...LOC 0228Z 225DEG 46KT 3044 9176
Special weather statement, Feb 2, 8:48 PM CST, 3 hours 25 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
848 PM CST TUE FEB 2 2016

LAZ034>036-047-048-030315-
WEST FELICIANA LA-EAST FELICIANA LA-POINTE COUPEE LA-
WEST BATON ROUGE LA-EAST BATON ROUGE LA-
848 PM CST TUE FEB 2 2016

...SPECIAL WEATHER STATEMENT...

AT 848 PM CST...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM NEAR ERWINVILLE TO 8 MILES
NORTHWEST OF PORT ALLEN TO NEAR GROSSE TETE...AND MOVING NORTHEAST AT
60 MPH.

HALF INCH HAIL WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
BATON ROUGE...ZACHARY...BAKER...JACKSON...ST. FRANCISVILLE...
CLINTON...SLAUGHTER...WILSON...NORWOOD...FELPS...ERWINVILLE AND
SPILLMAN.

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM CST FOR SOUTHEASTERN
LOUISIANA AND SOUTHERN MISSISSIPPI.

LAT...LON 3100 9127 3100 9088 3065 9108 3038 9135
      3039 9138 3039 9139 3043 9137 3054 9149
TIME...MOT...LOC 0248Z 208DEG 51KT 3056 9140 3050 9133 3041 9139
Special weather statement, Feb 2, 10:48 PM CST, 1 hour 25 minutes before
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Special weather statement, Feb 2, 11:31 PM CST, 42 minutes before
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Special weather statement, Feb 3, 12:13 AM CST, 0 minutes before
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The office that day

Everything else NWS New Orleans, LA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 2, 7:28 PM CSTRiver Flood WarningLIXSaint Tammany32 days
Feb 2, 8:28 PM CSTSpecial Weather StatementLIXPointe Coupee, West Feliciana47 min
Feb 2, 8:48 PM CSTSpecial Weather StatementLIXEast Feliciana, West Baton Rouge27 min
Feb 2, 9:24 PM CSTMarine Dense Fog AdvisoryLIX6 hr
Feb 2, 9:44 PM CSTSevere Thunderstorm WarningLIXEast Baton Rouge, East Feliciana, Pointe Coupee, West Baton Rouge31 min
Feb 2, 11:31 PM CSTSpecial Weather StatementLIXAssumption, Saint James29 min
Feb 3, 12:58 AM CSTSpecial Marine WarningLIX92 min
Feb 3, 1:34 AM CSTSpecial Marine WarningLIX56 min
Feb 3, 2:10 AM CSTSpecial Marine WarningLIX95 min
Feb 3, 3:24 AM CSTSpecial Marine WarningLIX51 min
Feb 3, 3:26 AM CSTSpecial Marine WarningLIX94 min
Feb 3, 9:49 AM CSTRiver Flood WarningLIXEast Baton Rouge26 hr
Feb 3, 9:51 AM CSTRiver Flood WarningLIXTangipahoa3 days
Feb 3, 2:59 PM CSTSmall Craft AdvisoryLIX39 hr
Feb 2, 10:48 PM CSTSpecial Weather StatementLIXPike, Walthall42 min
Feb 3, 3:44 AM CSTSpecial Weather StatementLIXJackson46 min

Nearby

Special Weather Statements in Louisiana, 2016Every special weather statement in 2016

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.