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Watch Status Reports.
SEL7
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 17
NWS STORM PREDICTION CENTER NORMAN OK
1210 PM EST WED FEB 11 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHERN ALABAMA
NORTHWEST GEORGIA
SOUTHEAST TENNESSEE
EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 1210 PM UNTIL
600 PM EST.
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 70 STATUTE
MILES EAST AND WEST OF A LINE FROM 40 MILES NORTHWEST OF
CHATTANOOGA TENNESSEE TO 55 MILES SOUTH SOUTHEAST OF BIRMINGHAM
ALABAMA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).
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 16...
DISCUSSION...LINE OF CONVECTION CONTINUES TO INTENSIFY OVER MIDDLE
TN...EXTENDING INTO EASTERN AL. THREAT FOR LOCALLY DAMAGING WINDS
IS EXPECTED TO DEVELOP THROUGH THE AFTERNOON AS 120+ KNOT MID LEVEL
JET MAX SURGES INTO REGION. LOW LEVEL VERTICAL SHEAR PROFILES ARE
ALSO QUITE FAVORABLE FOR BOW/LEWPS ALONG THE LINE...AND PERHAPS
ISOLATED CELLS AHEAD OF THE LINE...CAPABLE OF ISOLATED 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 400.
MEAN STORM MOTION VECTOR 25040.
...HART
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW7
WW 17 TORNADO AL GA TN 111710Z - 112300Z
AXIS..70 STATUTE MILES EAST AND WEST OF LINE..
40NW CHA/CHATTANOOGA TN/ - 55SSE BHM/BIRMINGHAM AL/
..AVIATION COORDS.. 60NM E/W /39NW GQO - 37N MGM/
HAIL SURFACE AND ALOFT..1 INCH. WIND GUSTS..60 KNOTS.
MAX TOPS TO 400. MEAN STORM MOTION VECTOR 25040.
LAT...LON 35438445 32838518 32838758 35438694
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU7.
Watch 17 Status Report Messages:
STATUS REPORT #5 ON WW 17
VALID 112235Z - 112340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 NNE MGM
TO 10 WNW RMG TO 35 E CHA.
..LEVIT..02/11/09
ATTN...WFO...BMX...HUN...FFC...MRX...
&&
STATUS REPORT FOR WT 17
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ALC017-027-029-111-123-112340-
AL
. ALABAMA COUNTIES INCLUDED ARE
CHAMBERS CLAY CLEBURNE
RANDOLPH TALLAPOOSA
$$
GAC015-045-057-111-123-143-149-223-227-233-112340-
GA
. GEORGIA COUNTIES INCLUDED ARE
BARTOW CARROLL CHEROKEE
FANNIN GILMER HARALSON
HEARD PAULDING PICKENS
POLK
$$
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.
$$
STATUS REPORT #4 ON WW 17
VALID 112135Z - 112240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 NNW MGM
TO 25 NW RMG TO 35 NNW CHA.
..LEVIT..02/11/09
ATTN...WFO...BMX...HUN...FFC...MRX...
&&
STATUS REPORT FOR WT 17
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ALC015-017-019-027-029-037-111-121-123-112240-
AL
. ALABAMA COUNTIES INCLUDED ARE
CALHOUN CHAMBERS CHEROKEE
CLAY CLEBURNE COOSA
RANDOLPH TALLADEGA TALLAPOOSA
$$
GAC015-045-047-055-057-083-111-115-123-129-143-149-213-223-227-
233-295-313-112240-
GA
. GEORGIA COUNTIES INCLUDED ARE
BARTOW CARROLL CATOOSA
CHATTOOGA CHEROKEE DADE
FANNIN FLOYD GILMER
GORDON HARALSON HEARD
MURRAY PAULDING PICKENS
POLK WALKER WHITFIELD
$$
TNC011-107-139-112240-
TN
. TENNESSEE COUNTIES INCLUDED ARE
BRADLEY MCMINN POLK
$$
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.
$$
STATUS REPORT #3 ON WW 17
VALID 112045Z - 112140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NNW SEM
TO 25 NW RMG TO 35 NNW CHA.
..GOSS..02/11/09
ATTN...WFO...BMX...HUN...FFC...MRX...
&&
STATUS REPORT FOR WT 17
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ALC015-017-019-021-027-029-037-055-111-115-117-121-123-112140-
AL
. ALABAMA COUNTIES INCLUDED ARE
CALHOUN CHAMBERS CHEROKEE
CHILTON CLAY CLEBURNE
COOSA ETOWAH RANDOLPH
ST. CLAIR SHELBY TALLADEGA
TALLAPOOSA
$$
GAC015-045-047-055-057-083-111-115-123-129-143-149-213-223-227-
233-295-313-112140-
GA
. GEORGIA COUNTIES INCLUDED ARE
BARTOW CARROLL CATOOSA
CHATTOOGA CHEROKEE DADE
FANNIN FLOYD GILMER
GORDON HARALSON HEARD
MURRAY PAULDING PICKENS
POLK WALKER WHITFIELD
$$
TNC007-011-065-107-115-121-139-143-153-112140-
TN
. TENNESSEE COUNTIES INCLUDED ARE
BLEDSOE BRADLEY HAMILTON
MCMINN MARION MEIGS
POLK RHEA SEQUATCHIE
$$
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.
$$
STATUS REPORT #2 ON WW 17
VALID 111945Z - 112040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 SSE TCL
TO 45 SSE BNA.
..LEVIT..02/11/09
ATTN...WFO...BMX...HUN...FFC...MRX...
&&
STATUS REPORT FOR WT 17
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ALC007-009-015-017-019-021-027-029-037-049-055-071-073-095-111-
115-117-121-123-112040-
AL
. ALABAMA COUNTIES INCLUDED ARE
BIBB BLOUNT CALHOUN
CHAMBERS CHEROKEE CHILTON
CLAY CLEBURNE COOSA
DEKALB ETOWAH JACKSON
JEFFERSON MARSHALL RANDOLPH
ST. CLAIR SHELBY TALLADEGA
TALLAPOOSA
$$
GAC015-045-047-055-057-083-111-115-123-129-143-149-213-223-227-
233-295-313-112040-
GA
. GEORGIA COUNTIES INCLUDED ARE
BARTOW CARROLL CATOOSA
CHATTOOGA CHEROKEE DADE
FANNIN FLOYD GILMER
GORDON HARALSON HEARD
MURRAY PAULDING PICKENS
POLK WALKER WHITFIELD
$$
TNC007-011-051-065-107-115-121-139-143-153-112040-
TN
. TENNESSEE COUNTIES INCLUDED ARE
BLEDSOE BRADLEY FRANKLIN
HAMILTON MCMINN MARION
MEIGS POLK RHEA
SEQUATCHIE
$$
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.
$$
STATUS REPORT #1 ON WW 17
VALID 111835Z - 111940Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..LEVIT..02/11/09
ATTN...WFO...BMX...HUN...FFC...MRX...
&&
STATUS REPORT FOR WT 17
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ALC007-009-015-017-019-021-027-029-037-043-049-055-071-073-089-
095-103-111-115-117-121-123-125-127-133-111940-
AL
. ALABAMA COUNTIES INCLUDED ARE
BIBB BLOUNT CALHOUN
CHAMBERS CHEROKEE CHILTON
CLAY CLEBURNE COOSA
CULLMAN DEKALB ETOWAH
JACKSON JEFFERSON MADISON
MARSHALL MORGAN RANDOLPH
ST. CLAIR SHELBY TALLADEGA
TALLAPOOSA TUSCALOOSA WALKER
WINSTON
$$
GAC015-045-047-055-057-083-111-115-123-129-143-149-213-223-227-
233-295-313-111940-
GA
. GEORGIA COUNTIES INCLUDED ARE
BARTOW CARROLL CATOOSA
CHATTOOGA CHEROKEE DADE
FANNIN FLOYD GILMER
GORDON HARALSON HEARD
MURRAY PAULDING PICKENS
POLK WALKER WHITFIELD
$$
TNC007-011-051-065-103-107-115-121-127-139-143-153-111940-
TN
. TENNESSEE COUNTIES INCLUDED ARE
BLEDSOE BRADLEY FRANKLIN
HAMILTON LINCOLN MCMINN
MARION MEIGS MOORE
POLK RHEA SEQUATCHIE
$$
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 (60%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
Low (10%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Low (<5%)
|
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.