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The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
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Watch Status Reports.
SEL5
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 145
NWS STORM PREDICTION CENTER NORMAN OK
155 PM CDT SUN APR 12 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
MUCH OF SOUTHEAST LOUISIANA
LARGE PART OF SOUTHERN AND CENTRAL MISSISSIPPI
COASTAL WATERS
EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 155 PM UNTIL 900
PM CDT.
TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE
MILES EITHER SIDE OF A LINE FROM 25 MILES SOUTHEAST OF HOUMA
LOUISIANA TO 75 MILES NORTHWEST OF JACKSON MISSISSIPPI. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU5).
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.
OTHER WATCH INFORMATION...CONTINUE...WW 142...WW 143...WW 144...
DISCUSSION...STRONG SHEAR FAVORABLE FOR SUPPORT OF SUPERCELLS IS IN
PLACE ACROSS THE WATCH. WITH MOIST AND UNSTABLE AIR SPREADING
RAPIDLY NWD IN ADVANCE OF DEVELOPING SEVERE THUNDERSTORMS
LA...CONDITIONS EXPECTED TO BE FAVORABLE FOR SUPERCELLS AND
TORNADOES THIS AFTERNOON AS STORMS MOVE E/NE ACROSS CENTRAL MS TO
SERN LA.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 25040.
...HALES
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW5
WW 145 TORNADO LA MS CW 121855Z - 130200Z
AXIS..60 STATUTE MILES EITHER SIDE OF LINE..
25SE HUM/HOUMA LA/ - 75NW JAN/JACKSON MS/
..AVIATION COORDS.. 50NM EITHER SIDE /17WNW LEV - 42WSW SQS/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 25040.
LAT...LON 29159136 32939201 33228997 29458938
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU5.
Watch 145 Status Report Messages:
STATUS REPORT #4 ON WW 145
VALID 130030Z - 130140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 WNW BTR
TO 25 S GLH.
..KERR..04/13/09
ATTN...WFO...LIX...JAN...LCH...
&&
STATUS REPORT FOR WT 145
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC005-007-033-037-047-051-057-063-071-075-077-087-089-091-093-
095-103-105-109-117-121-125-130140-
LA
. LOUISIANA PARISHES INCLUDED ARE
ASCENSION ASSUMPTION EAST BATON ROUGE
EAST FELICIANA IBERVILLE JEFFERSON
LAFOURCHE LIVINGSTON ORLEANS
PLAQUEMINES POINTE COUPEE ST. BERNARD
ST. CHARLES ST. HELENA ST. JAMES
ST. JOHN THE BAPTIST ST. TAMMANY TANGIPAHOA
TERREBONNE WASHINGTON WEST BATON ROUGE
WEST FELICIANA
$$
MSC001-005-007-021-029-031-037-045-049-051-063-065-073-077-079-
085-089-091-109-113-121-123-127-129-147-149-157-163-130140-
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
ADAMS AMITE ATTALA
CLAIBORNE COPIAH COVINGTON
FRANKLIN HANCOCK HINDS
HOLMES JEFFERSON JEFFERSON DAVIS
LAMAR LAWRENCE LEAKE
LINCOLN MADISON MARION
PEARL RIVER PIKE RANKIN
SCOTT SIMPSON SMITH
WALTHALL WARREN WILKINSON
YAZOO
$$
GMZ530-550-130140-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
LAKE PONTCHARTRAIN AND LAKE MAUREPAS
COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER
TO LOWER ATCHAFALAYA RIVER LA OUT 20 NM
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 145
VALID 122335Z - 130040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 WSW HEZ
TO 30 SSW GLH.
..KERR..04/12/09
ATTN...WFO...LIX...JAN...LCH...
&&
STATUS REPORT FOR WT 145
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC005-007-029-033-035-037-041-047-051-057-063-065-071-075-077-
087-089-091-093-095-103-105-107-109-117-121-123-125-130040-
LA
. LOUISIANA PARISHES INCLUDED ARE
ASCENSION ASSUMPTION CONCORDIA
EAST BATON ROUGE EAST CARROLL EAST FELICIANA
FRANKLIN IBERVILLE JEFFERSON
LAFOURCHE LIVINGSTON MADISON
ORLEANS PLAQUEMINES POINTE COUPEE
ST. BERNARD ST. CHARLES ST. HELENA
ST. JAMES ST. JOHN THE BAPTISTST. TAMMANY
TANGIPAHOA TENSAS TERREBONNE
WASHINGTON WEST BATON ROUGE WEST CARROLL
WEST FELICIANA
$$
MSC001-005-007-021-029-031-037-045-049-051-053-055-063-065-073-
077-079-085-089-091-109-113-121-123-125-127-129-147-149-157-163-
130040-
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
ADAMS AMITE ATTALA
CLAIBORNE COPIAH COVINGTON
FRANKLIN HANCOCK HINDS
HOLMES HUMPHREYS ISSAQUENA
JEFFERSON JEFFERSON DAVIS LAMAR
LAWRENCE LEAKE LINCOLN
MADISON MARION PEARL RIVER
PIKE RANKIN SCOTT
SHARKEY SIMPSON SMITH
WALTHALL WARREN WILKINSON
YAZOO
$$
GMZ530-550-130040-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
LAKE PONTCHARTRAIN AND LAKE MAUREPAS
COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER
TO LOWER ATCHAFALAYA RIVER LA OUT 20 NM
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 145
VALID 122225Z - 122340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..KERR..04/12/09
ATTN...WFO...LIX...JAN...LCH...
&&
STATUS REPORT FOR WT 145
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC005-007-025-029-033-035-037-041-047-051-057-063-065-067-071-
075-077-083-087-089-091-093-095-103-105-107-109-117-121-123-125-
122340-
LA
. LOUISIANA PARISHES INCLUDED ARE
ASCENSION ASSUMPTION CATAHOULA
CONCORDIA EAST BATON ROUGE EAST CARROLL
EAST FELICIANA FRANKLIN IBERVILLE
JEFFERSON LAFOURCHE LIVINGSTON
MADISON MOREHOUSE ORLEANS
PLAQUEMINES POINTE COUPEE RICHLAND
ST. BERNARD ST. CHARLES ST. HELENA
ST. JAMES ST. JOHN THE BAPTISTST. TAMMANY
TANGIPAHOA TENSAS TERREBONNE
WASHINGTON WEST BATON ROUGE WEST CARROLL
WEST FELICIANA
$$
MSC001-005-007-021-029-031-037-045-049-051-053-055-063-065-073-
077-079-085-089-091-109-113-121-123-125-127-129-147-149-157-163-
122340-
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
ADAMS AMITE ATTALA
CLAIBORNE COPIAH COVINGTON
FRANKLIN HANCOCK HINDS
HOLMES HUMPHREYS ISSAQUENA
JEFFERSON JEFFERSON DAVIS LAMAR
LAWRENCE LEAKE LINCOLN
MADISON MARION PEARL RIVER
PIKE RANKIN SCOTT
SHARKEY SIMPSON SMITH
WALTHALL WARREN WILKINSON
YAZOO
$$
GMZ530-550-122340-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
LAKE PONTCHARTRAIN AND LAKE MAUREPAS
COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER
TO LOWER ATCHAFALAYA RIVER LA OUT 20 NM
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 145
VALID 122140Z - 122240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..KERR..04/12/09
ATTN...WFO...LIX...JAN...LCH...
&&
STATUS REPORT FOR WT 145
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC005-007-025-029-033-035-037-041-047-051-057-063-065-067-071-
075-077-083-087-089-091-093-095-099-103-105-107-109-117-121-123-
125-122240-
LA
. LOUISIANA PARISHES INCLUDED ARE
ASCENSION ASSUMPTION CATAHOULA
CONCORDIA EAST BATON ROUGE EAST CARROLL
EAST FELICIANA FRANKLIN IBERVILLE
JEFFERSON LAFOURCHE LIVINGSTON
MADISON MOREHOUSE ORLEANS
PLAQUEMINES POINTE COUPEE RICHLAND
ST. BERNARD ST. CHARLES ST. HELENA
ST. JAMES ST. JOHN THE BAPTISTST. MARTIN
ST. TAMMANY TANGIPAHOA TENSAS
TERREBONNE WASHINGTON WEST BATON ROUGE
WEST CARROLL WEST FELICIANA
$$
MSC001-005-007-021-029-031-037-045-049-051-053-055-063-065-073-
077-079-085-089-091-109-113-121-123-125-127-129-147-149-157-163-
122240-
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
ADAMS AMITE ATTALA
CLAIBORNE COPIAH COVINGTON
FRANKLIN HANCOCK HINDS
HOLMES HUMPHREYS ISSAQUENA
JEFFERSON JEFFERSON DAVIS LAMAR
LAWRENCE LEAKE LINCOLN
MADISON MARION PEARL RIVER
PIKE RANKIN SCOTT
SHARKEY SIMPSON SMITH
WALTHALL WARREN WILKINSON
YAZOO
$$
GMZ530-550-122240-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
LAKE PONTCHARTRAIN AND LAKE MAUREPAS
COASTAL WATERS FROM THE SOUTHWEST PASS OF THE MISSISSIPPI RIVER
TO LOWER ATCHAFALAYA RIVER LA OUT 20 NM
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Mod (40%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (20%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (40%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (40%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Mod (30%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (70%)
|
For each watch, probabilities for particular events inside the watch
(listed above in each table) are determined by the issuing forecaster.
The "Low" category contains probability values ranging from less than 2%
to 20% (F2-F5 tornadoes), less than 5% to 20% (all other probabilities),
"Moderate" from 30% to 60%, and "High" from 70% to greater than 95%.
High values are bolded and lighter in color to provide awareness of
an increased threat for a particular event.
weather.gov 
