Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL6
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 96
NWS STORM PREDICTION CENTER NORMAN OK
1200 PM CDT THU APR 11 2013
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
WEST CENTRAL INTO NORTH CENTRAL ALABAMA
SOUTHERN MIDDLE TENNESSEE
EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM NOON UNTIL 700
PM CDT.
TORNADOES...HAIL TO 1.5 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 55 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES EAST SOUTHEAST OF
MERIDIAN MISSISSIPPI TO 25 MILES NORTH NORTHWEST OF HUNTSVILLE
ALABAMA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).
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 95...
DISCUSSION...PRE-FRONTAL SUPERCELL HAS FORMED IN E CENTRAL MS AND
WILL CONTINUE TO MOVE NEWD INTO WRN AL AROUND THE TIME THE STORM
MERGES WITH THE FRONTAL BAND OF CONVECTION IMMEDIATELY TO ITS W.
SOME SURFACE HEATING IN A FEW CLOUD BREAKS AND INCREASING LOW-LEVEL
MOISTURE WILL RESULT IN DESTABILIZATION AND THE LIKELIHOOD THAT
STORMS IN THE LINE WILL STRENGTHEN THIS AFTERNOON WITH AN ATTENDANT
RISK FOR DAMAGING WINDS. THE TORNADO THREAT WILL BE LARGELY
DEPENDENT ON THE FORMATION OF MORE DISCRETE STORMS AHEAD OF THE
LINE...THOUGH LOW-LEVEL SHEAR WILL BE SUFFICIENT FOR CIRCULATIONS
WITHIN THE LINE.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 24040.
...THOMPSON
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW6
WW 96 TORNADO AL TN 111700Z - 120000Z
AXIS..55 STATUTE MILES EAST AND WEST OF LINE..
30ESE MEI/MERIDIAN MS/ - 25NNW HSV/HUNTSVILLE AL/
..AVIATION COORDS.. 50NM E/W /30ESE MEI - 31ENE MSL/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 24040.
LAT...LON 32158922 34978791 34978598 32158733
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU6.
Watch 96 Status Report Messages:
STATUS REPORT #3 ON WW 96
VALID 112035Z - 112140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 ESE MEI
TO 45 SW TCL TO 35 NNE TCL TO 30 NE MSL.
..MOSIER..04/11/13
ATTN...WFO...BMX...HUN...
&&
STATUS REPORT FOR WT 96
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ALC001-007-009-021-037-043-047-049-051-055-065-071-073-079-083-
085-089-091-095-101-103-105-115-117-121-125-127-133-112140-
AL
. ALABAMA COUNTIES INCLUDED ARE
AUTAUGA BIBB BLOUNT
CHILTON COOSA CULLMAN
DALLAS DEKALB ELMORE
ETOWAH HALE JACKSON
JEFFERSON LAWRENCE LIMESTONE
LOWNDES MADISON MARENGO
MARSHALL MONTGOMERY MORGAN
PERRY ST. CLAIR SHELBY
TALLADEGA TUSCALOOSA WALKER
WINSTON
$$
TNC051-103-127-112140-
TN
. TENNESSEE COUNTIES INCLUDED ARE
FRANKLIN LINCOLN MOORE
$$
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.
$$
STATUS REPORT #2 ON WW 96
VALID 111935Z - 112040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 SE MEI TO
45 ENE CBM TO 15 N MSL.
..MOSIER..04/11/13
ATTN...WFO...BMX...HUN...
&&
STATUS REPORT FOR WT 96
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ALC001-007-009-021-037-043-047-051-055-057-063-065-073-079-083-
085-089-091-095-101-103-105-107-115-117-119-121-125-127-133-
112040-
AL
. ALABAMA COUNTIES INCLUDED ARE
AUTAUGA BIBB BLOUNT
CHILTON COOSA CULLMAN
DALLAS ELMORE ETOWAH
FAYETTE GREENE HALE
JEFFERSON LAWRENCE LIMESTONE
LOWNDES MADISON MARENGO
MARSHALL MONTGOMERY MORGAN
PERRY PICKENS ST. CLAIR
SHELBY SUMTER TALLADEGA
TUSCALOOSA WALKER WINSTON
$$
TNC103-127-112040-
TN
. TENNESSEE COUNTIES INCLUDED ARE
LINCOLN MOORE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 96
VALID 111830Z - 111940Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..MOSIER..04/11/13
ATTN...WFO...BMX...HUN...
&&
STATUS REPORT FOR WT 96
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ALC007-009-021-033-043-047-057-059-063-065-073-075-077-079-083-
089-091-093-095-103-105-107-117-119-125-127-133-111940-
AL
. ALABAMA COUNTIES INCLUDED ARE
BIBB BLOUNT CHILTON
COLBERT CULLMAN DALLAS
FAYETTE FRANKLIN GREENE
HALE JEFFERSON LAMAR
LAUDERDALE LAWRENCE LIMESTONE
MADISON MARENGO MARION
MARSHALL MORGAN PERRY
PICKENS SHELBY SUMTER
TUSCALOOSA WALKER WINSTON
$$
TNC103-127-111940-
TN
. TENNESSEE COUNTIES INCLUDED ARE
LINCOLN MOORE
$$
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 (50%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (20%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (60%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
Low (20%)
|
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 (90%)
|
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.