Note:
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 95
NWS STORM PREDICTION CENTER NORMAN OK
800 AM CDT THU APR 11 2013
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHEAST LOUISIANA
SOUTHERN MISSISSIPPI
COASTAL WATERS
EFFECTIVE THIS THURSDAY MORNING AND AFTERNOON FROM 800 AM UNTIL
300 PM CDT.
TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE
MILES EAST AND WEST OF A LINE FROM 55 MILES NORTH NORTHWEST OF
PINE BELT MISSISSIPPI TO 35 MILES WEST SOUTHWEST OF HOUMA
LOUISIANA. 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.
DISCUSSION...TSTMS ARE EXPECTED TO GRADUALLY INCREASE ACROSS THE
WATCH AREA THIS MORNING AS FORCING FOR ASCENT STRENGTHENS AHEAD OF
SHORT-WAVE TROUGH APPROACHING FROM SRN TX. CONTINUED
HEATING/MOISTENING OF THE PRE-FRONTAL BOUNDARY LAYER SHOULD
GRADUALLY REMOVE THE CAP OBSERVED BY THE 12Z REGIONAL
SOUNDINGS...YIELDING MLCAPE OF 1000-2000 J/KG. WHEN COUPLED WITH
MODERATELY STRONG LOW-LEVEL AND DEEP-LAYER SHEAR /SEE 12Z JAN
SOUNDING/...THE SETUP WILL SUPPORT A MIXTURE OF BOWING AND SUPERCELL
STRUCTURES CAPABLE OF DAMAGING WINDS AND A FEW TORNADOES.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 24030.
...MEAD
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW5
WW 95 TORNADO LA MS CW 111300Z - 112000Z
AXIS..90 STATUTE MILES EAST AND WEST OF LINE..
55NNW PIB/PINE BELT MS/ - 35WSW HUM/HOUMA LA/
..AVIATION COORDS.. 80NM E/W /30SE JAN - 59WNW LEV/
HAIL SURFACE AND ALOFT..1 INCH. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 24030.
LAT...LON 32208815 29378970 29379269 32209123
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU5.
Watch 95 Status Report Messages:
STATUS REPORT #4 ON WW 95
VALID 111930Z - 112000Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 ESE HUM
TO 10 SW MEI.
MOST OF THE LINE SHOULD BE THROUGH WW 95 BY 11/2000Z AND THE WATCH
CAN BE ALLOWED TO EXPIRE. THE ONLY EXCEPTION WOULD LIKELY BE
JACKSON COUNTY MS BUT THE CONVECTION SHOULD EXIT THAT COUNTY BY
2030Z AND AN EXTENSION IS PROBABLY UNNECESSARY.
..MOSIER..04/11/13
ATTN...WFO...LIX...LCH...JAN...MOB...
&&
STATUS REPORT FOR WT 95
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC075-087-112000-
LA
. LOUISIANA PARISHES INCLUDED ARE
PLAQUEMINES ST. BERNARD
$$
MSC023-035-039-041-045-047-059-069-075-103-111-131-153-112000-
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
CLARKE FORREST GEORGE
GREENE HANCOCK HARRISON
JACKSON KEMPER LAUDERDALE
NOXUBEE PERRY STONE
WAYNE
$$
GMZ532-534-536-538-112000-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
MISSISSIPPI SOUND
LAKE BORGNE
CHANDELEUR SOUND
BRETON SOUND
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 95
VALID 111825Z - 111940Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 ESE HUM
TO 40 N ASD TO 35 WSW MEI.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 443
..MOSIER..04/11/13
ATTN...WFO...LIX...LCH...JAN...MOB...
&&
STATUS REPORT FOR WT 95
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC051-071-075-087-103-111940-
LA
. LOUISIANA PARISHES INCLUDED ARE
JEFFERSON ORLEANS PLAQUEMINES
ST. BERNARD ST. TAMMANY
$$
MSC023-031-035-039-041-045-047-059-061-067-069-073-075-087-101-
103-109-111-131-153-111940-
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
CLARKE COVINGTON FORREST
GEORGE GREENE HANCOCK
HARRISON JACKSON JASPER
JONES KEMPER LAMAR
LAUDERDALE LOWNDES NEWTON
NOXUBEE PEARL RIVER PERRY
STONE WAYNE
$$
GMZ530-532-534-536-538-111940-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
LAKE PONTCHARTRAIN AND LAKE MAUREPAS
MISSISSIPPI SOUND
LAKE BORGNE
CHANDELEUR SOUND
BRETON SOUND
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 95
VALID 111740Z - 111840Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 WSW HUM
TO 15 SE MCB TO 25 ESE JAN.
..MOSIER..04/11/13
ATTN...WFO...LIX...LCH...JAN...MOB...
&&
STATUS REPORT FOR WT 95
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC051-057-071-075-087-089-095-103-109-117-111840-
LA
. LOUISIANA PARISHES INCLUDED ARE
JEFFERSON LAFOURCHE ORLEANS
PLAQUEMINES ST. BERNARD ST. CHARLES
ST. JOHN THE BAPTIST ST. TAMMANY TERREBONNE
WASHINGTON
$$
MSC023-031-035-039-041-045-047-059-061-065-067-069-073-075-087-
091-101-103-109-111-129-131-147-153-111840-
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
CLARKE COVINGTON FORREST
GEORGE GREENE HANCOCK
HARRISON JACKSON JASPER
JEFFERSON DAVIS JONES KEMPER
LAMAR LAUDERDALE LOWNDES
MARION NEWTON NOXUBEE
PEARL RIVER PERRY SMITH
STONE WALTHALL WAYNE
$$
GMZ530-532-534-536-538-111840-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
LAKE PONTCHARTRAIN AND LAKE MAUREPAS
MISSISSIPPI SOUND
LAKE BORGNE
CHANDELEUR SOUND
BRETON SOUND
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 95
VALID 111545Z - 111640Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 50 WSW HUM
TO 10 SW BTR TO 25 SE HEZ TO 25 NNE MCB TO 10 SSW JAN.
..DIAL..04/11/13
ATTN...WFO...LIX...LCH...JAN...MOB...
&&
STATUS REPORT FOR WT 95
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC005-007-033-037-051-057-063-071-075-087-089-091-093-095-101-
103-105-109-117-111640-
LA
. LOUISIANA PARISHES INCLUDED ARE
ASCENSION ASSUMPTION EAST BATON ROUGE
EAST FELICIANA JEFFERSON LAFOURCHE
LIVINGSTON ORLEANS PLAQUEMINES
ST. BERNARD ST. CHARLES ST. HELENA
ST. JAMES ST. JOHN THE BAPTISTST. MARY
ST. TAMMANY TANGIPAHOA TERREBONNE
WASHINGTON
$$
MSC005-023-031-035-039-041-045-047-059-061-065-067-073-077-091-
109-111-113-127-129-131-147-153-111640-
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
AMITE CLARKE COVINGTON
FORREST GEORGE GREENE
HANCOCK HARRISON JACKSON
JASPER JEFFERSON DAVIS JONES
LAMAR LAWRENCE MARION
PEARL RIVER PERRY PIKE
SIMPSON SMITH STONE
WALTHALL WAYNE
$$
GMZ530-532-534-536-538-111640-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
LAKE PONTCHARTRAIN AND LAKE MAUREPAS
MISSISSIPPI SOUND
LAKE BORGNE
CHANDELEUR SOUND
BRETON SOUND
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
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
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
Low (<5%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Low (10%)
|
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.