Alert archive / Mississippi / River Flood Warnings in 2009

River Flood Warning 63, NWS New Orleans, LA

December 8, 2009Harrison County, Mississippi

NWS New Orleans, LA issued this river flood warning at Dec 8, 2009, 8:33 AM CST for Harrison County, Mississippi. It took effect at Dec 9, 2009, 12:00 AM CST. It was in force for 45 hr.

The area

The counties it named.

The facts

Issued
Dec 8, 2009, 8:33 AM CST (14:33 UTC)
In effect from
Dec 9, 2009, 12:00 AM CST
Expired
Dec 10, 2009, 8:34 PM CST
In force
45 hr
Issued by
NWS New Orleans, LA
Flood severity
Minor

County Harrison County, MS

The radar

The Mobile radar (KMOB), 86 km from the middle of the area, began a volume at 14:33 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The river

Written for the forecast point Biloxi River near Lyman (LYMM6).

Action stage
10 ft
Minor stage
12 ft
Moderate stage
16 ft
Major stage
18 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 02481130, 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, 1 hour 4 minutes earlier.

Area forecast discussion, Dec 8, 7:29 AM CST, 1 hour 4 minutes before
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Hazardous weather outlook, Dec 8, 6:26 AM CST, 2 hours 7 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, 2:46 AM CST, 5 hours 47 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
246 AM CST TUE DEC 08 2009

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

0240 AM     FLASH FLOOD      PAINCOURTVILLE          29.99N 91.05W
12/08/2009                   ASSUMPTION         LA   LAW ENFORCEMENT

            FLASH FLOODING REPORTED WITH ONE RESIDENCE REPORTING 1.5
            INCHES OF WATER IN HOUSE. WIDESPREAD STREET FLOODING.

0240 AM     FLASH FLOOD      PIERRE PART             29.96N 91.21W
12/08/2009                   ASSUMPTION         LA   AIRPLANE PILOT

            WIDESPREAD STREET FLOODING WITH SOME WATER OVER ONE FOOT
            IN DEPTH.

&&

TDESTRI
Local storm report, Dec 8, 2:47 AM CST, 5 hours 46 minutes before
PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE NEW ORLEANS LA
247 AM CST TUE DEC 08 2009

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

0240 AM     FLASH FLOOD      PIERRE PART             29.96N 91.21W
12/08/2009                   ASSUMPTION         LA   LAW ENFORCEMENT

            WIDESPREAD STREET FLOODING WITH SOME WATER OVER ONE FOOT
            IN DEPTH.

&&

TDESTRI
Local storm report, Dec 8, 2:52 AM CST, 5 hours 41 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
252 AM CST TUE DEC 08 2009

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

0145 AM     TSTM WND DMG     KENNER                  29.98N 90.25W
12/08/2009                   JEFFERSON          LA   TRAINED SPOTTER

            UPDATE ON PREVIOUS DAMAGE REPORTS FROM POSSIBLE TORNADO.
            STORM SPOTTERS DROVE AROUND WOODLAKE SUBDIVISION AND
            FOUND A FEW SMALL TREES DOWN...3 FENCES DOWN...AND
            CARPORT ROOF BLOWN OFF.

&&

TDESTRI
Local storm report, Dec 8, 4:13 AM CST, 4 hours 20 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NEW ORLEANS LA
413 AM CST TUE DEC 08 2009

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

0300 AM     FLASH FLOOD      LAPLACE                 30.07N 90.47W
12/08/2009                   ST. JOHN THE BAPTI LA   LAW ENFORCEMENT

            WATER ENTERED HOMES IN RESERVE AND LAPLACE.

&&

PGRIGSBY
Local storm report, Dec 8, 7:22 AM CST, 1 hour 11 minutes before
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Local storm report, Dec 8, 8:09 AM CST, 24 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Dec 7, 9:48 PM CSTSmall Craft AdvisoryLIX24 hr
Dec 8, 12:58 AM CSTSpecial Marine WarningLIX62 min
Dec 8, 1:36 AM CSTSevere Thunderstorm WarningLIXJefferson, Saint Charles24 min
Dec 8, 1:49 AM CSTSevere Thunderstorm WarningLIXSaint Tammany41 min
Dec 8, 1:51 AM CSTFlash Flood WarningLIXAssumption, Lafourche, Saint James, Saint John the Baptist3 hr
Dec 8, 1:57 AM CSTSpecial Marine WarningLIX48 min
Dec 8, 2:41 AM CSTSpecial Marine WarningLIX64 min
Dec 8, 3:04 AM CSTAreal Flood AdvisoryLIXJefferson, Lafourche, Orleans, Plaquemines, Saint Bernard, Saint Charles116 min
Dec 8, 4:56 AM CSTAreal Flood AdvisoryLIXAscension, Assumption, East Baton Rouge, Iberville, Jefferson, Lafourche and 7 more2 hr
Dec 8, 5:00 AM CSTFlash Flood WatchLIXAssumption, East Baton Rouge, East Feliciana, Iberville, Pointe Coupee, Saint Bernard and 6 more16 hr
Dec 8, 6:23 AM CSTAreal Flood AdvisoryLIXSaint Tammany112 min
Dec 8, 7:01 AM CSTSpecial Marine WarningLIX29 min
Dec 8, 7:57 AM CSTSpecial Marine WarningLIX63 min
Dec 8, 8:16 AM CSTRiver Flood WarningLIXSaint Tammany26 hr
Dec 8, 8:41 AM CSTAreal Flood AdvisoryLIXSaint Tammany2 hr
Dec 8, 8:50 AM CSTSpecial Marine WarningLIX40 min
Dec 8, 8:59 AM CSTSpecial Marine WarningLIX46 min
Dec 8, 10:17 AM CSTRiver Flood WarningLIXSaint Tammany4 days
Dec 8, 10:23 AM CSTRiver Flood WarningLIXSaint Tammany, Washington7 days
Dec 8, 10:23 AM CSTRiver Flood WarningLIXSaint Tammany23 hr
Dec 8, 4:32 PM CSTAreal Flood AdvisoryLIXEast Feliciana, Pointe Coupee, Saint Helena, West Feliciana118 min
Dec 8, 7:00 AM CSTTornado WarningLIXHancock30 min
Dec 8, 10:17 AM CSTRiver Flood WarningLIXPike, Walthall10 hr

Nearby

River Flood Warnings in Mississippi, 2009Every 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; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.