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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.
SEL7
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 257
NWS STORM PREDICTION CENTER NORMAN OK
1140 PM CDT FRI MAY 2 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
PARTS OF SOUTHEAST ARKANSAS
PARTS OF NORTHERN AND EASTERN LOUISIANA
LARGE PART OF CENTRAL AND NORTHERN MISSISSIPPI
EFFECTIVE THIS FRIDAY NIGHT AND SATURDAY MORNING FROM 1140 PM
UNTIL 700 AM 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 90 STATUTE
MILES EAST AND WEST OF A LINE FROM 45 MILES NORTHWEST OF COLUMBUS
MISSISSIPPI TO 20 MILES EAST OF ALEXANDRIA LOUISIANA. 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...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 253...TORNADO WATCH NUMBER 254...TORNADO WATCH
NUMBER 255. WATCH NUMBER 253 254 255 WILL NOT BE IN EFFECT AFTER
1140 PM CDT.
DISCUSSION...SEVERE THUNDERSTORMS CONTINUE TO REDEVELOP AHEAD OF
SLOW MOVING FRONTAL ZONE ERN AR INTO ERN TX. STRONG UPSTREAM TROUGH
AND DIVERGENT UPPER JET WILL ENHANCE BOTH MID LEVEL SHEAR AND LARGE
SCALE ASCENT REMAINDER OF NIGHT. WITH A VERY MOIST AND MDTLY
UNSTABLE SLY FLOW CONTINUING ACROSS WATCH AREA...POTENTIAL FOR
TORNADIC SUPERCELLS WILL PERSIST AS THE TREND IS FOR SLOW
DEVELOPMENT EWD THRU THE NIGHT.
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 24030.
...HALES
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW7
WW 257 TORNADO AR LA MS 030440Z - 031200Z
AXIS..90 STATUTE MILES EAST AND WEST OF LINE..
45NW CBM/COLUMBUS MS/ - 20E ESF/ALEXANDRIA LA/
..AVIATION COORDS.. 80NM E/W /44NNW IGB - 29ENE AEX/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 24030.
REPLACES WW 253..AL MS TN
REPLACES WW 254..AR LA MS
REPLACES WW 255..AR MS
LAT...LON 34088743 31389043 31389348 34089058
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU7.
Watch 257 Status Report Messages:
STATUS REPORT #5 ON WW 257
VALID 030850Z - 030940Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 5 E ESF TO
40 NNE HEZ TO 35 SSE GWO TO 15 SE TUP.
..BROYLES..05/03/08
ATTN...WFO...JAN...SHV...MEG...
&&
STATUS REPORT FOR WT 257
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC029-030940-
LA
. LOUISIANA PARISHES INCLUDED ARE
CONCORDIA
$$
MSC001-007-019-021-025-029-037-049-063-069-079-085-087-089-099-
101-103-105-121-123-127-129-159-030940-
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
ADAMS ATTALA CHOCTAW
CLAIBORNE CLAY COPIAH
FRANKLIN HINDS JEFFERSON
KEMPER LEAKE LINCOLN
LOWNDES MADISON NESHOBA
NEWTON NOXUBEE OKTIBBEHA
RANKIN SCOTT SIMPSON
SMITH WINSTON
$$
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.
$$
STATUS REPORT #4 ON WW 257
VALID 030835Z - 030940Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 5 E ESF TO
35 N HEZ TO 35 N JAN TO 45 E GWO TO 15 SE TUP.
..BROYLES..05/03/08
ATTN...WFO...JAN...SHV...MEG...
&&
STATUS REPORT FOR WT 257
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC025-029-030940-
LA
. LOUISIANA PARISHES INCLUDED ARE
CATAHOULA CONCORDIA
$$
MSC001-007-019-021-025-029-037-049-063-069-079-085-087-089-099-
101-103-105-121-123-127-129-159-030940-
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
ADAMS ATTALA CHOCTAW
CLAIBORNE CLAY COPIAH
FRANKLIN HINDS JEFFERSON
KEMPER LEAKE LINCOLN
LOWNDES MADISON NESHOBA
NEWTON NOXUBEE OKTIBBEHA
RANKIN SCOTT SIMPSON
SMITH WINSTON
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 257
VALID 030645Z - 030740Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NNW POE
TO 15 S MLU TO 25 SE GLH TO 20 S UOX.
..BROYLES..05/03/08
ATTN...WFO...JAN...SHV...MEG...
&&
STATUS REPORT FOR WT 257
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC021-025-029-035-041-043-059-065-083-107-030740-
LA
. LOUISIANA PARISHES INCLUDED ARE
CALDWELL CATAHOULA CONCORDIA
EAST CARROLL FRANKLIN GRANT
LA SALLE MADISON RICHLAND
TENSAS
$$
MSC001-007-013-015-017-019-021-025-029-037-043-049-051-053-055-
063-069-079-085-087-089-095-097-099-101-103-105-121-123-125-127-
129-149-155-159-163-030740-
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
ADAMS ATTALA CALHOUN
CARROLL CHICKASAW CHOCTAW
CLAIBORNE CLAY COPIAH
FRANKLIN GRENADA HINDS
HOLMES HUMPHREYS ISSAQUENA
JEFFERSON KEMPER LEAKE
LINCOLN LOWNDES MADISON
MONROE MONTGOMERY NESHOBA
NEWTON NOXUBEE OKTIBBEHA
RANKIN SCOTT SHARKEY
SIMPSON SMITH WARREN
WEBSTER WINSTON YAZOO
$$
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.
$$
STATUS REPORT #2 ON WW 257
VALID 030625Z - 030740Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 NW POE TO
20 SW MLU TO 15 S GLH TO 30 SW UOX.
..BROYLES..05/03/08
ATTN...WFO...JAN...SHV...MEG...
&&
STATUS REPORT FOR WT 257
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC021-025-029-035-041-043-059-065-069-083-107-123-127-030740-
LA
. LOUISIANA PARISHES INCLUDED ARE
CALDWELL CATAHOULA CONCORDIA
EAST CARROLL FRANKLIN GRANT
LA SALLE MADISON NATCHITOCHES
RICHLAND TENSAS WEST CARROLL
WINN
$$
MSC001-007-013-015-017-019-021-025-029-037-043-049-051-053-055-
063-069-079-083-085-087-089-095-097-099-101-103-105-121-123-125-
127-129-149-151-155-159-161-163-030740-
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
ADAMS ATTALA CALHOUN
CARROLL CHICKASAW CHOCTAW
CLAIBORNE CLAY COPIAH
FRANKLIN GRENADA HINDS
HOLMES HUMPHREYS ISSAQUENA
JEFFERSON KEMPER LEAKE
LEFLORE LINCOLN LOWNDES
MADISON MONROE MONTGOMERY
NESHOBA NEWTON NOXUBEE
OKTIBBEHA RANKIN SCOTT
SHARKEY SIMPSON SMITH
WARREN WASHINGTON WEBSTER
WINSTON YALOBUSHA YAZOO
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 257
VALID 030540Z - 030640Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..BROYLES..05/03/08
ATTN...WFO...JAN...SHV...MEG...
&&
STATUS REPORT FOR WT 257
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ARC003-017-030640-
AR
. ARKANSAS COUNTIES INCLUDED ARE
ASHLEY CHICOT
$$
LAC021-025-029-035-041-043-049-059-065-067-069-073-083-085-107-
123-127-030640-
LA
. LOUISIANA PARISHES INCLUDED ARE
CALDWELL CATAHOULA CONCORDIA
EAST CARROLL FRANKLIN GRANT
JACKSON LA SALLE MADISON
MOREHOUSE NATCHITOCHES OUACHITA
RICHLAND SABINE TENSAS
WEST CARROLL WINN
$$
MSC001-007-011-013-015-017-019-021-025-029-037-043-049-051-053-
055-063-069-079-083-085-087-089-095-097-099-101-103-105-121-123-
125-127-129-133-135-149-151-155-159-161-163-030640-
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
ADAMS ATTALA BOLIVAR
CALHOUN CARROLL CHICKASAW
CHOCTAW CLAIBORNE CLAY
COPIAH FRANKLIN GRENADA
HINDS HOLMES HUMPHREYS
ISSAQUENA JEFFERSON KEMPER
LEAKE LEFLORE LINCOLN
LOWNDES MADISON MONROE
MONTGOMERY NESHOBA NEWTON
NOXUBEE OKTIBBEHA RANKIN
SCOTT SHARKEY SIMPSON
SMITH SUNFLOWER TALLAHATCHIE
WARREN WASHINGTON WEBSTER
WINSTON YALOBUSHA YAZOO
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
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.
weather.gov 
