Alert archive / Louisiana / Small Craft Advisories in 2016

Small Craft Advisory 38, NWS New Orleans, LA

August 11, 2016

NWS New Orleans, LA issued this small craft advisory at Aug 11, 2016, 7:05 PM CDT. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued: Aug 11, 2016, 7:05 PM CDT (00:05 UTC)
Expired: Aug 12, 2016, 7:00 AM CDT
In force: 12 hr
Issued by: NWS New Orleans, LA

What forecasters said that day

The local office's own words before this small craft 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 small craft advisory went out at Aug 11, 4:06 PM CDT, 2 hours 59 minutes earlier.

Area forecast discussion, Aug 11, 4:06 PM CDT, 2 hours 59 minutes before

Area Forecast Discussion
National Weather Service New Orleans LA
406 PM CDT THU AUG 11 2016

.SHORT TERM...
Heavy rain event in full swing with anticipation of continual
threat for additional areal flooding and some flash flooding.
Efficient rainfall process that is somewhat hybrid - mostly
tropical with a tinge of baroclinic influence, as the enhancement
corridor on the western fringes would suggest. This has
complicated matters in radar rainfall estimations in that the
tropical stratiform rain may be underestimating while the hotter
bands are overestimating. Bottom line is that several more inches
of rainfall can still be expected in intermittent fashion
overnight. Can not rule out a nocturnal enhancement where banding
may really put down several to many inches of rainfall in
localized narrow bands. This is the rationale behind the 'HIGH'
risk for excessive rainfall in portions of the forecast area
tonight and again Friday through Saturday morning. Otherwise,
categorical PoPs and temperatures are consensus of the global and
local models.

.LONG TERM...
A transition to a more typical sea breeze regime is expected as
the low area merges with frontal boundary and lifts out Sunday. A
trend to more normal temperatures and rain chances for the
remainder of the forecast package.

&&

.AVIATION...
Conditions bouncing from VFR to sudden IFR vsby in heavy rainfall
bands. Stratiform tropical rainfall coverage to prevail for much
of the 24 hours period.

&&

.MARINE...
Winds and seas are stil holding at enhanced levels by widespread
tropical convection and some meso-high forcing over the coastal
waters. These conditions should soften somewhat this evening and
overnight but maintain at moderate levels until the low pressure
system moves well north of the coastal plains.

&&

.DECISION SUPPORT...
DSS code: Yellow.
Deployed: None.
Activation: High Impact Desk.
Activities: Flash Flood Watch/Flash Flood Warnings/River Warnings

Decision Support Services (DSS) Code Legend
Green  = No weather impacts that require action.
Blue   = Long-fused watch, warning, or advisory in effect or
         high visibility event.
Yellow = Heightened impacts with short-fused watch, warning
         or advisory issuances; radar support.
Orange = High Impacts; Slight to Moderate risk severe; nearby
         tropical events; HazMat or other large episodes.
Red =    Full engagement for Moderate risk of severe and/or
        direct tropical threats; Events of National Significance.
&&

.PRELIMINARY POINT TEMPS/POPS...
MCB  75  82  72  82 /  70  80  60  70
BTR  75  81  73  81 /  80 100  80  70
ASD  78  83  72  88 /  90  90  70  70
MSY  78  81  73  87 /  80  90  70  70
GPT  78  84  74  88 /  80  80  60  60
PQL  78  85  73  88 /  70  90  50  60

&&

.LIX Watches/Warnings/Advisories...
LA...Flash Flood Watch through Saturday morning for LAZ034>037-039-
     040-046>050-056>072.

GM...Small Craft Advisory until 7 PM CDT this evening for GMZ532-536-
     538-552-555-557-572-575-577.

MS...Flash Flood Watch through Saturday morning for MSZ068>071-077-
     080>082.

GM...Small Craft Advisory until 7 PM CDT this evening for GMZ536-538-
     552-555-557-572-575-577.

&&

24/RR

Hazardous weather outlook, Aug 11, 5:49 PM CDT, 1 hour 16 minutes before

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In the hours before

Special weather statement, Aug 11, 2:15 PM CDT, 4 hours 50 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
215 PM CDT THU AUG 11 2016

LAZ050-058-072-112000-
LIVINGSTON-SOUTHERN TANGIPAHOA-ST. JOHN THE BAPTIST-
215 PM CDT THU AUG 11 2016

...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN TANGIPAHOA...EAST
CENTRAL LIVINGSTON AND NORTHEASTERN ST. JOHN THE BAPTIST PARISHES...

AT 214 PM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR
HAMMOND...MOVING SOUTH AT 20 MPH.

WINDS IN EXCESS OF 30 MPH ARE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
HAMMOND...PONCHATOULA...SPRINGFIELD...ROBERT...NATALBANY...
KILLIAN AND TICKFAW.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY CAUSE
LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

LAT...LON 3062 9031 3034 9027 3030 9029 3030 9031
      3025 9034 3025 9043 3028 9040 3029 9040
      3030 9043 3031 9042 3034 9048 3030 9054
      3031 9055 3029 9056 3062 9052
TIME...MOT...LOC 1914Z 000DEG 16KT 3055 9042

Special weather statement, Aug 11, 3:08 PM CDT, 3 hours 57 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
308 PM CDT THU AUG 11 2016

LAZ036-037-039-040-048-050-071-072-MSZ069>071-077-112030-
LIVINGSTON-SOUTHERN TANGIPAHOA-NORTHERN TANGIPAHOA-WASHINGTON-EAST
FELICIANA-ST. HELENA-ST. TAMMANY-EAST BATON ROUGE-PIKE-WALTHALL-PEARL
RIVER-AMITE-
308 PM CDT THU AUG 11 2016

...CLUSTERS OF SHOWERS AND THUNDERSTORMS WILL AFFECT WASHINGTON...ST.
TAMMANY...TANGIPAHOA...NORTHERN LIVINGSTON...ST. HELENA...
NORTHEASTERN EAST BATON ROUGE AND EASTERN EAST FELICIANA PARISHES...
WALTHALL...WESTERN PEARL RIVER...EASTERN AMITE AND PIKE COUNTIES...

AT 303 PM CDT...STRONG THUNDERSTORMS WERE CLUSTERED OVER EAST
CENTRAL LOUISIANA AND EXTREME SOUTH CENTRAL MISSISSIPPI...MOVING
SOUTH AT 15 MPH.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
CAUSE LOCALIZED FLOODING ACROSS AMITE...PIKE AND WALTHALL COUNTIES
AND WASHINGTON...TANGIPAHOA AND SAINT HELENA PARISHES. DO NOT DRIVE
YOUR VEHICLE THROUGH FLOODED ROADWAYS.

WINDS IN EXCESS OF 30 MPH ARE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
HAMMOND...MCCOMB...BOGALUSA...PICAYUNE...DENHAM SPRINGS...
COVINGTON...FRANKLINTON...LIBERTY...GREENSBURG...AMITE...
PONCHATOULA...WALKER...AMITE CITY...MAGNOLIA...ABITA SPRINGS...
KENTWOOD...LIVINGSTON...SUMMIT...INDEPENDENCE AND TYLERTOWN.

LAT...LON 3133 9008 3134 9004 3118 9003 3117 9001
      3114 9001 3113 8994 3107 8992 3108 8984
      3100 8983 3100 8966 3039 8968 3043 9098
      3135 9080 3135 9011
TIME...MOT...LOC 2003Z 000DEG 15KT 3099 9032

Local storm report, Aug 11, 4:30 PM CDT, 2 hours 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
430 PM CDT THU AUG 11 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0200 PM     FLASH FLOOD      DONALDSONVILLE          30.10N 91.00W
08/11/2016                   ASCENSION          LA   EMERGENCY MNGR

            4 HOMES FLOODED IN DONALDSONVILLE... SIGNIFICANT STREET
            FLOODING ALONG MAIN STREET

&&

AK

Special weather statement, Aug 11, 4:58 PM CDT, 2 hours 7 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
458 PM CDT THU AUG 11 2016

MSZ069-112300-
AMITE-
458 PM CDT THU AUG 11 2016

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT AMITE COUNTY...

AT 458 PM CDT...STRONG THUNDERSTORMS WERE CLUSTERED NEAR
SMITHDALE...OR 9 MILES NORTHEAST OF LIBERTY...MOVING SOUTH AT 20 MPH.

WINDS IN EXCESS OF 30 MPH ARE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
LIBERTY...GILLSBERG AND SMITHDALE.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY CAUSE
LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

LAT...LON 3133 9060 3108 9055 3100 9055 3100 9099
      3135 9089 3135 9075
TIME...MOT...LOC 2158Z 012DEG 18KT 3129 9073

11

Special weather statement, Aug 11, 6:05 PM CDT, 1 hour before

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Special weather statement, Aug 11, 6:43 PM CDT, 22 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 11, 9:46 PM CDT	Special Weather Statement	LIX	Ascension, Livingston	59 min
Aug 12, 1:36 AM CDT	Special Weather Statement	LIX	Saint Tammany	24 min
Aug 12, 1:55 AM CDT	Special Weather Statement	LIX	Saint Helena, Tangipahoa	65 min
Aug 12, 2:09 AM CDT	Flash Flood Warning	LIX	Saint Helena, Tangipahoa	3 hr
Aug 12, 3:33 AM CDT	Special Weather Statement	LIX	East Baton Rouge	27 min
Aug 12, 4:16 AM CDT	Flash Flood Warning	LIX	East Baton Rouge, East Feliciana, Pointe Coupee, Saint Helena, West Feliciana	3 hr
Aug 12, 4:23 AM CDT	Flash Flood Warning	LIX	East Baton Rouge, Livingston, Saint Tammany, Tangipahoa, Washington, West Baton Rouge	112 min
Aug 12, 4:32 AM CDT	Areal Flood Advisory	LIX	Ascension, Assumption, Iberville, Jefferson, Lafourche, Livingston and 10 more	118 min
Aug 12, 5:06 AM CDT	Flash Flood Warning	LIX	Saint Helena, Tangipahoa	3 hr
Aug 12, 5:40 AM CDT	Special Weather Statement	LIX	Livingston	65 min
Aug 12, 5:41 AM CDT	Special Weather Statement	LIX	East Feliciana	64 min
Aug 12, 5:42 AM CDT	Special Weather Statement	LIX	East Feliciana	63 min
Aug 12, 6:00 AM CDT	Flash Flood Warning	LIX	Ascension, East Baton Rouge, Iberville, Livingston, Pointe Coupee, Saint Tammany and 3 more	3 hr
Aug 12, 6:21 AM CDT	Flash Flood Warning Emergency	LIX	Saint Helena	3 hr
Aug 12, 6:24 AM CDT	Special Weather Statement	LIX	Jefferson	36 min
Aug 12, 6:27 AM CDT	River Flood Warning	LIX	Saint Helena	44 hr
Aug 12, 6:27 AM CDT	Special Marine Warning	LIX		63 min
Aug 12, 6:36 AM CDT	Areal Flood Advisory	LIX	Ascension, Assumption, Iberville, Jefferson, Lafourche, Livingston and 9 more	3 hr
Aug 12, 6:44 AM CDT	River Flood Warning	LIX	Livingston	5 days
Aug 12, 6:44 AM CDT	River Flood Warning	LIX	Saint Helena	4 days
Aug 12, 6:52 AM CDT	River Flood Warning	LIX	Tangipahoa	49 hr
Aug 12, 7:05 AM CDT	Flash Flood Warning	LIX	Ascension, East Baton Rouge, East Feliciana, Iberville, Livingston, Pointe Coupee and 6 more	6 hr
Aug 12, 7:08 AM CDT	Special Weather Statement	LIX	West Feliciana	67 min
Aug 12, 7:12 AM CDT	River Flood Warning	LIX	Washington	48 hr
Aug 12, 7:31 AM CDT	Special Weather Statement	LIX	Saint Tammany	29 min
Aug 12, 7:33 AM CDT	Special Marine Warning	LIX		57 min
Aug 12, 7:37 AM CDT	Special Marine Warning	LIX		38 min
Aug 12, 8:18 AM CDT	Special Weather Statement	LIX	East Baton Rouge, West Baton Rouge	57 min
Aug 12, 8:19 AM CDT	Special Weather Statement	LIX	West Feliciana	26 min
Aug 12, 9:05 AM CDT	Areal Flood Advisory	LIX	Ascension, Assumption, Iberville, Jefferson, Lafourche, Orleans and 8 more	3 hr
Aug 12, 9:14 AM CDT	Flash Flood Warning Emergency	LIX	Saint Helena, Tangipahoa	3 hr
Aug 12, 9:29 AM CDT	Special Weather Statement	LIX	West Feliciana	61 min
Aug 12, 9:30 AM CDT	River Flood Warning	LIX	East Baton Rouge	53 hr
Aug 12, 9:30 AM CDT	River Flood Warning	LIX	Ascension, Livingston	8 days
Aug 12, 9:36 AM CDT	River Flood Warning	LIX	Saint Tammany	5 days
Aug 12, 10:05 AM CDT	Flash Flood Warning Emergency	LIX	East Baton Rouge, East Feliciana, Pointe Coupee, West Feliciana	3 hr
Aug 12, 10:06 AM CDT	River Flood Warning	LIX	Tangipahoa	55 hr
Aug 12, 10:23 AM CDT	Special Weather Statement	LIX	Pointe Coupee, West Feliciana	67 min
Aug 12, 10:42 AM CDT	Flash Flood Warning Emergency	LIX	East Baton Rouge, East Feliciana, Saint Helena, West Feliciana	3 hr
Aug 12, 10:53 AM CDT	River Flood Warning	LIX	Tangipahoa	3 days
Aug 12, 11:01 AM CDT	Special Marine Warning	LIX		59 min
Aug 12, 11:05 AM CDT	Special Marine Warning	LIX		55 min
Aug 12, 11:23 AM CDT	Special Weather Statement	LIX	Pointe Coupee	67 min
Aug 12, 11:25 AM CDT	River Flood Warning	LIX	Saint Tammany	51 hr
Aug 12, 11:25 AM CDT	River Flood Warning	LIX	Saint Tammany	71 hr
Aug 12, 11:34 AM CDT	Small Craft Advisory	LIX		10 hr
Aug 12, 12:05 PM CDT	Special Marine Warning	LIX		55 min
Aug 12, 12:09 PM CDT	Flash Flood Warning Emergency	LIX	Saint Helena, Tangipahoa	3 hr
Aug 12, 12:31 PM CDT	Special Weather Statement	LIX	Pointe Coupee	59 min
Aug 12, 12:57 PM CDT	Flash Flood Warning	LIX	Ascension, East Baton Rouge, East Feliciana, Iberville, Livingston, Pointe Coupee and 5 more	6 hr
Aug 12, 1:21 PM CDT	Flash Flood Warning Emergency	LIX	East Baton Rouge, East Feliciana, Saint Helena, West Feliciana	114 min
Aug 12, 6:50 PM CDT	Flash Flood Warning	LIX	Ascension, East Baton Rouge, East Feliciana, Iberville, Livingston, Pointe Coupee and 3 more	4 hr
Aug 11, 7:05 PM CDT	Flash Flood Warning	LIX	Wilkinson	3 hr
Aug 12, 4:19 AM CDT	Flash Flood Warning	LIX	Amite, Pike	116 min
Aug 12, 4:57 AM CDT	Flash Flood Warning	LIX	Amite, Wilkinson	3 hr
Aug 12, 6:18 AM CDT	Flash Flood Warning Emergency	LIX	Pike	3 hr
Aug 12, 6:30 AM CDT	Flash Flood Warning	LIX	Harrison, Jackson	3 hr
Aug 12, 6:52 AM CDT	River Flood Warning	LIX	Pike	33 hr
Aug 12, 7:27 AM CDT	Areal Flood Advisory	LIX	Pearl River	2 hr
Aug 12, 7:51 AM CDT	Flash Flood Warning Emergency	LIX	Amite, Wilkinson	3 hr
Aug 12, 9:33 AM CDT	Special Weather Statement	LIX	Wilkinson	57 min
Aug 12, 9:36 AM CDT	River Flood Warning	LIX	Pike, Walthall	65 hr
Aug 12, 2:57 PM CDT	Special Weather Statement	LIX	Wilkinson	63 min

Nearby

Small Craft Advisories in Louisiana, 2016 Every small craft advisory 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.