Alert archive / Louisiana / River Flood Warnings in 2009

River Flood Warning 65, NWS New Orleans, LA

December 8, 2009Saint Tammany Parish, Louisiana

NWS New Orleans, LA issued this river flood warning at Dec 8, 2009, 10:17 AM CST for Saint Tammany Parish, Louisiana. It took effect at Dec 12, 2009, 12:00 AM CST. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued: Dec 8, 2009, 10:17 AM CST (16:17 UTC)
In effect from: Dec 12, 2009, 12:00 AM CST
Expired: Dec 12, 2009, 12:00 PM CST
In force: 12 hr
Issued by: NWS New Orleans, LA
Flood severity: Minor

County Saint Tammany Parish, LA

The river

Written for the forecast point Bogue Chitto River near Bush (BSHL1). The gauge peaked at 9.45 ft at Dec 13, 2009, 12:00 PM CST.

Action stage: 9 ft
Minor stage: 11 ft
Moderate stage: 15 ft
Major stage: 18 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 02492000, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river flood 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 river flood warning went out at Dec 8, 7:29 AM CST, 2 hours 48 minutes earlier.

Area forecast discussion, Dec 8, 7:29 AM CST, 2 hours 48 minutes before

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Hazardous weather outlook, Dec 8, 6:26 AM CST, 3 hours 51 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NEW ORLEANS LA
626 AM CST TUE DEC 8 2009

GMZ530-550-555-570-575-LAZ034>040-046>050-056>070-MSZ068>071-077-
080>082-091230-
LAKE PONTCHARTRAIN AND LAKE MAUREPAS-
COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER
TO LOWER ATCHAFALAYA RIVER LA OUT 20 NM-
COASTAL WATERS FROM PASCAGOULA MS TO THE SOUTHWEST PASS OF THE
MISSISSIPPI RIVER OUT 20 NM-
COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER
TO LOWER ATCHAFALAYA RIVER LA FROM 20 TO 60 NM-
COASTAL WATERS FROM PASCAGOULA MS TO THE SOUTHWEST PASS OF THE
MISSISSIPPI RIVER FROM 20 TO 60 NM-POINTE COUPEE-WEST FELICIANA-
EAST FELICIANA-ST. HELENA-TANGIPAHOA-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-WILKINSON-AMITE-PIKE-WALTHALL-PEARL RIVER-
HANCOCK-HARRISON-JACKSON-
626 AM CST TUE DEC 8 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF COASTAL WATERS
OF SOUTHEAST LOUISIANA AND SOUTH MISSISSIPPI...SOUTHEAST
LOUISIANA AND SOUTHERN MISSISSIPPI.

.DAY ONE...TODAY AND TONIGHT

...SEVERE THUNDERSTORMS AND FLOODING...
THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS AND TORNADOES
ACROSS THE ENTIRE OUTLOOK AREA TODAY AND TONIGHT. THE MAIN CONCERN
FROM SEVERE WEATHER WILL BE DAMAGING STRAIGHT LINE WINDS AND
ISOLATED TORNADOES...A FEW OF WHICH COULD BE STRONG.

A FLASH FLOOD WATCH IS IN EFFECT FOR THE ENTIRE OUTLOOK AREA
EXCEPT THE LOWER COASTAL PARISHES TODAY. ADDITIONAL HEAVY RAINFALL
ON SATURATED GROUND WILL RESULT IN LOCALIZED FLOODING OF LOW
LYING...POORLY DRAINED...AND FLOOD PRONE AREAS.

A DEEP SURFACE LOW IS EXPECTED TO MOVE INTO THE MID MISSISSIPPI
VALLEY AND BRING A COLD FRONT THROUGH THE REGION TONIGHT.
AHEAD OF THE COLD FRONT ABUNDANT MOISTURE AND STRONG WINDS WILL BE
IN PLACE. WITH MARGINAL INSTABILITY IN PLACE...A STRONG
DISTURBANCE MOVING THROUGH THE CENTRAL PLAINS SHOULD HELP DEVELOP
THUNDERSTORMS DURING THE DAY WITH A FEW BECOMING STRONG TO SEVERE.
WITH THE AMOUNT OF SHEAR EXPECTED ANY DEEP THUNDERSTORM WILL HAVE
THE CAPABILITY OF PRODUCING BOWING STRUCTURES OR SUPER CELLS. THIS
WILL BRING A RISK OF DAMAGING WINDS AND ISOLATED TORNADOES...A FEW
OF WHICH COULD BE STRONG...EF2 OR HIGHER.

THE SEVERE RISK WILL END TONIGHT AFTER THE PASSAGE OF THE COLD
FRONT.

...MARINE HAZARDS...
SMALL CRAFT ADVISORIES ARE IN EFFECT TODAY AND TONIGHT ACROSS THE
COASTAL WATERS AND TIDAL LAKES. SOUTHEAST TO SOUTH WINDS WILL
INCREASE TO 20 TO 25 KNOTS AND SEAS WILL BUILD AS HIGH AS 7 TO 8
FEET TODAY AHEAD OF AN APPROACHING COLD FRONT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

...MARINE...
MODERATE TO POSSIBLY STRONG OFFSHORE WINDS WILL PREVAIL BEHIND THE
COLD FRONT ON WEDNESDAY...AND A SMALL CRAFT ADVISORY MAY BE
REQUIRED FOR A PORTION OF THE COASTAL WATERS WEDNESDAY MORNING.
STRONG WINDS AND HIGH SEAS WILL DEVELOP AGAIN WEDNESDAY NIGHT AND
PERSIST THROUGH EARLY SATURDAY MORNING.

...THUNDERSTORMS...
THERE IS A CHANCE OF THUNDERSTORMS WITH THE NEXT WEATHER SYSTEM
FRIDAY AND FRIDAY NIGHT. SEVERE THUNDERSTORMS ARE NOT EXPECTED AT
THIS TIME...HOWEVER...THERE IS A CHANCE FOR LOCALLY HEAVY
RAINFALL.

.SPOTTER INFORMATION STATEMENT...
THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND
EMERGENCY MANAGEMENT PERSONNEL IN SUPPORT OF SEVERE WEATHER AND
FLOODING OPERATIONS...IS REQUESTED TODAY AND POSSIBLY TONIGHT.

22/TD

In the hours before

Local storm report, Dec 8, 7:22 AM CST, 2 hours 55 minutes before

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Local storm report, Dec 8, 8:09 AM CST, 2 hours 8 minutes before

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Local storm report, Dec 8, 9:58 AM CST, 19 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
Dec 7, 9:48 PM CST	Small Craft Advisory	LIX		24 hr
Dec 8, 12:58 AM CST	Special Marine Warning	LIX		62 min
Dec 8, 1:36 AM CST	Severe Thunderstorm Warning	LIX	Jefferson, Saint Charles	24 min
Dec 8, 1:49 AM CST	Severe Thunderstorm Warning	LIX	Saint Tammany	41 min
Dec 8, 1:51 AM CST	Flash Flood Warning	LIX	Assumption, Lafourche, Saint James, Saint John the Baptist	3 hr
Dec 8, 1:57 AM CST	Special Marine Warning	LIX		48 min
Dec 8, 2:41 AM CST	Special Marine Warning	LIX		64 min
Dec 8, 3:04 AM CST	Areal Flood Advisory	LIX	Jefferson, Lafourche, Orleans, Plaquemines, Saint Bernard, Saint Charles	116 min
Dec 8, 4:56 AM CST	Areal Flood Advisory	LIX	Ascension, Assumption, East Baton Rouge, Iberville, Jefferson, Lafourche and 7 more	2 hr
Dec 8, 5:00 AM CST	Flash Flood Watch	LIX	Assumption, East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, Saint Bernard and 6 more	16 hr
Dec 8, 6:23 AM CST	Areal Flood Advisory	LIX	Saint Tammany	112 min
Dec 8, 7:01 AM CST	Special Marine Warning	LIX		29 min
Dec 8, 7:57 AM CST	Special Marine Warning	LIX		63 min
Dec 8, 8:16 AM CST	River Flood Warning	LIX	Saint Tammany	26 hr
Dec 8, 8:41 AM CST	Areal Flood Advisory	LIX	Saint Tammany	2 hr
Dec 8, 8:50 AM CST	Special Marine Warning	LIX		40 min
Dec 8, 8:59 AM CST	Special Marine Warning	LIX		46 min
Dec 8, 10:23 AM CST	River Flood Warning	LIX	Saint Tammany, Washington	7 days
Dec 8, 10:23 AM CST	River Flood Warning	LIX	Saint Tammany	23 hr
Dec 8, 4:32 PM CST	Areal Flood Advisory	LIX	East Feliciana, Pointe Coupee, Saint Helena, West Feliciana	118 min
Dec 8, 7:00 AM CST	Tornado Warning	LIX	Hancock	30 min
Dec 8, 8:33 AM CST	River Flood Warning	LIX	Harrison	60 hr
Dec 8, 10:17 AM CST	River Flood Warning	LIX	Pike, Walthall	10 hr

Nearby

River Flood Warnings in Louisiana, 2009 Every river flood warning in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the gauge from the NWS water service and the USGS.