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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.
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 321
NWS STORM PREDICTION CENTER NORMAN OK
205 PM CDT WED MAY 14 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHERN LOUISIANA
PARTS OF SOUTHERN MISSISSIPPI
COASTAL WATERS
EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 205 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 NORTH AND SOUTH OF A LINE FROM 50 MILES SOUTHEAST OF MC
COMB MISSISSIPPI TO 30 MILES WEST SOUTHWEST OF LAKE CHARLES
LOUISIANA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).
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...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 319. WATCH NUMBER 319 WILL NOT BE IN EFFECT AFTER
205 PM CDT. CONTINUE...WW 320...
DISCUSSION...WITH A VERY MOIST...UNSTABLE AIRMASS ACROSS SRN
LA...THUNDERSTORMS WILL INCREASE IN NUMBER AND INTENSITY THROUGH THE
AFTERNOON. 40-50KT OF DEEP LAYER SHEAR WILL SUPPORT DEVELOPMENT OF
SUPERCELLS INCLUDING THREAT OF TORNADOES.
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
550. MEAN STORM MOTION VECTOR 26030.
...HALES
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW1
WW 321 TORNADO LA MS CW 141905Z - 150200Z
AXIS..60 STATUTE MILES NORTH AND SOUTH OF LINE..
50SE MCB/MC COMB MS/ - 30WSW LCH/LAKE CHARLES LA/
..AVIATION COORDS.. 50NM N/S /43SSE MCB - 32WSW LCH/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 26030.
REPLACES WW 319..LA TX
LAT...LON 29798987 29099368 30829368 31548987
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU1.
Watch 321 Status Report Messages:
STATUS REPORT #6 ON WW 321
VALID 150135Z - 150200Z
AN ISOLATED SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35
W HUM TO 15 NW ASD TO 15 N ASD.
WW 321 WILL BE ALLOWED TO EXPIRE AT 150200Z.
..MEAD..05/15/08
ATTN...WFO...LCH...LIX...JAN...
&&
STATUS REPORT FOR WT 321
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC051-057-071-075-087-089-095-103-109-150200-
LA
. LOUISIANA PARISHES INCLUDED ARE
JEFFERSON LAFOURCHE ORLEANS
PLAQUEMINES ST. BERNARD ST. CHARLES
ST. JOHN THE BAPTIST ST. TAMMANY TERREBONNE
$$
MSC045-150200-
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
HANCOCK
$$
GMZ530-150200-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
LAKE PONTCHARTRAIN AND LAKE MAUREPAS
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #5 ON WW 321
VALID 150035Z - 150140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 S 7R4 TO
10 NNW LFT TO 40 SSW PIB.
..SCHNEIDER..05/15/08
ATTN...WFO...LCH...LIX...JAN...
&&
STATUS REPORT FOR WT 321
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC007-045-051-057-071-075-087-089-093-095-099-101-103-105-109-
117-150140-
LA
. LOUISIANA PARISHES INCLUDED ARE
ASSUMPTION IBERIA JEFFERSON
LAFOURCHE ORLEANS PLAQUEMINES
ST. BERNARD ST. CHARLES ST. JAMES
ST. JOHN THE BAPTIST ST. MARTIN ST. MARY
ST. TAMMANY TANGIPAHOA TERREBONNE
WASHINGTON
$$
MSC045-109-150140-
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
HANCOCK PEARL RIVER
$$
GMZ530-150140-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
LAKE PONTCHARTRAIN AND LAKE MAUREPAS
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #4 ON WW 321
VALID 142335Z - 150040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 S ESF TO
25 NNE LFT TO 40 SSW PIB.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 927
..SCHNEIDER..05/14/08
ATTN...WFO...LCH...LIX...JAN...
&&
STATUS REPORT FOR WT 321
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC001-003-005-007-011-019-023-033-039-045-047-051-053-055-057-
063-071-075-087-089-093-095-097-099-101-103-105-109-113-117-121-
150040-
LA
. LOUISIANA PARISHES INCLUDED ARE
ACADIA ALLEN ASCENSION
ASSUMPTION BEAUREGARD CALCASIEU
CAMERON EAST BATON ROUGE EVANGELINE
IBERIA IBERVILLE JEFFERSON
JEFFERSON DAVIS LAFAYETTE LAFOURCHE
LIVINGSTON ORLEANS PLAQUEMINES
ST. BERNARD ST. CHARLES ST. JAMES
ST. JOHN THE BAPTIST ST. LANDRY ST. MARTIN
ST. MARY ST. TAMMANY TANGIPAHOA
TERREBONNE VERMILION WASHINGTON
WEST BATON ROUGE
$$
GMZ530-150040-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
LAKE PONTCHARTRAIN AND LAKE MAUREPAS
$$
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.
$$
STATUS REPORT #3 ON WW 321
VALID 142235Z - 142340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 927
..SCHNEIDER..05/14/08
ATTN...WFO...LCH...LIX...JAN...
&&
STATUS REPORT FOR WT 321
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC001-003-005-007-011-019-023-033-037-039-045-047-051-053-055-
057-063-071-075-077-087-089-091-093-095-097-099-101-103-105-109-
113-117-121-125-142340-
LA
. LOUISIANA PARISHES INCLUDED ARE
ACADIA ALLEN ASCENSION
ASSUMPTION BEAUREGARD CALCASIEU
CAMERON EAST BATON ROUGE EAST FELICIANA
EVANGELINE IBERIA IBERVILLE
JEFFERSON JEFFERSON DAVIS LAFAYETTE
LAFOURCHE LIVINGSTON ORLEANS
PLAQUEMINES POINTE COUPEE ST. BERNARD
ST. CHARLES ST. HELENA ST. JAMES
ST. JOHN THE BAPTIST ST. LANDRY ST. MARTIN
ST. MARY ST. TAMMANY TANGIPAHOA
TERREBONNE VERMILION WASHINGTON
WEST BATON ROUGE WEST FELICIANA
$$
MSC005-065-091-113-147-157-142340-
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
AMITE JEFFERSON DAVIS MARION
PIKE WALTHALL WILKINSON
$$
GMZ530-142340-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
LAKE PONTCHARTRAIN AND LAKE MAUREPAS
$$
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.
$$
STATUS REPORT #2 ON WW 321
VALID 142140Z - 142240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 927 WHICH
WILL BE ISSUED SHORTLY.
..SCHNEIDER..05/14/08
ATTN...WFO...LCH...LIX...JAN...
&&
STATUS REPORT FOR WT 321
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC001-003-005-007-011-019-023-033-037-039-045-047-051-053-055-
057-063-071-075-077-087-089-091-093-095-097-099-101-103-105-109-
113-117-121-125-142240-
LA
. LOUISIANA PARISHES INCLUDED ARE
ACADIA ALLEN ASCENSION
ASSUMPTION BEAUREGARD CALCASIEU
CAMERON EAST BATON ROUGE EAST FELICIANA
EVANGELINE IBERIA IBERVILLE
JEFFERSON JEFFERSON DAVIS LAFAYETTE
LAFOURCHE LIVINGSTON ORLEANS
PLAQUEMINES POINTE COUPEE ST. BERNARD
ST. CHARLES ST. HELENA ST. JAMES
ST. JOHN THE BAPTIST ST. LANDRY ST. MARTIN
ST. MARY ST. TAMMANY TANGIPAHOA
TERREBONNE VERMILION WASHINGTON
WEST BATON ROUGE WEST FELICIANA
$$
MSC001-005-037-065-077-085-091-113-147-157-142240-
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
ADAMS AMITE FRANKLIN
JEFFERSON DAVIS LAWRENCE LINCOLN
MARION PIKE WALTHALL
WILKINSON
$$
GMZ530-142240-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
LAKE PONTCHARTRAIN AND LAKE MAUREPAS
$$
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.
$$
STATUS REPORT #1 ON WW 321
VALID 142025Z - 142140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..SCHNEIDER..05/14/08
ATTN...WFO...LCH...LIX...JAN...
&&
STATUS REPORT FOR WT 321
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC001-003-005-007-009-011-019-023-029-033-037-039-045-047-051-
053-055-057-063-071-075-077-087-089-091-093-095-097-099-101-103-
105-109-113-117-121-125-142140-
LA
. LOUISIANA PARISHES INCLUDED ARE
ACADIA ALLEN ASCENSION
ASSUMPTION AVOYELLES BEAUREGARD
CALCASIEU CAMERON CONCORDIA
EAST BATON ROUGE EAST FELICIANA EVANGELINE
IBERIA IBERVILLE JEFFERSON
JEFFERSON DAVIS LAFAYETTE LAFOURCHE
LIVINGSTON ORLEANS PLAQUEMINES
POINTE COUPEE ST. BERNARD ST. CHARLES
ST. HELENA ST. JAMES ST. JOHN THE BAPTIST
ST. LANDRY ST. MARTIN ST. MARY
ST. TAMMANY TANGIPAHOA TERREBONNE
VERMILION WASHINGTON WEST BATON ROUGE
WEST FELICIANA
$$
MSC001-005-037-065-077-085-091-113-147-157-142140-
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
ADAMS AMITE FRANKLIN
JEFFERSON DAVIS LAWRENCE LINCOLN
MARION PIKE WALTHALL
WILKINSON
$$
GMZ530-142140-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
LAKE PONTCHARTRAIN AND LAKE MAUREPAS
$$
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 (30%)
|
Probability of 1 or more wind events > 65 knots
|
Low (20%)
|
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.
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