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 156
NWS STORM PREDICTION CENTER NORMAN OK
555 PM CDT THU APR 3 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHWEST ARKANSAS
FAR SOUTHEAST OKLAHOMA
NORTH CENTRAL AND NORTHEAST TEXAS
EFFECTIVE THIS THURSDAY AFTERNOON FROM 555 PM UNTIL MIDNIGHT CDT.
TORNADOES...HAIL TO 2.5 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 95 STATUTE
MILES EAST AND WEST OF A LINE FROM 55 MILES SOUTH SOUTHWEST OF
PARIS TEXAS TO 50 MILES WEST NORTHWEST OF DE QUEEN ARKANSAS. 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 153...WW 154...WW 155...
DISCUSSION...SUPERCELLS WILL LIKELY CONTINUE DEVELOPING AND MOVING
ENEWD AHEAD OF SURFACE COLD FRONT EXPECTED TO MOVE SWD ACROSS THE
RED RIVER LATER THIS EVENING/EARLY FRIDAY MORNING...AS SSWLY LLJ
INCREASES. INITIAL DEVELOPMENT MAY BE SLIGHTLY ELEVATED WITH
PRIMARY THREAT OF LARGE HAIL. HOWEVER...LOW LEVEL SHEAR WILL
STRENGTHEN WITH TIME THIS EVENING AND WOULD POSE ADDITIONAL ISOLATED
TORNADO/DAMAGING WIND THREAT WITH ANY STORM ROOTING NEAR THE
SURFACE.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 26030.
...EVANS
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW6
WW 156 TORNADO AR OK TX 032255Z - 040500Z
AXIS..95 STATUTE MILES EAST AND WEST OF LINE..
55SSW PRX/PARIS TX/ - 50WNW DEQ/DE QUEEN AR/
..AVIATION COORDS.. 85NM E/W /61WNW GGG - 42SE MLC/
HAIL SURFACE AND ALOFT..2.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 26030.
LAT...LON 32889744 34319687 34319354 32889418
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU6.
Watch 156 Status Report Messages:
STATUS REPORT #1 ON WW 156
VALID 040035Z - 040140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..HURLBUT..04/04/08
ATTN...WFO...SHV...FWD...
&&
STATUS REPORT FOR WT 156
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ARC061-081-091-133-040140-
AR
. ARKANSAS COUNTIES INCLUDED ARE
HOWARD LITTLE RIVER MILLER
SEVIER
$$
OKC089-040140-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
MCCURTAIN
$$
TXC037-063-067-085-119-121-147-159-181-223-231-277-343-387-449-
040140-
TX
. TEXAS COUNTIES INCLUDED ARE
BOWIE CAMP CASS
COLLIN DELTA DENTON
FANNIN FRANKLIN GRAYSON
HOPKINS HUNT LAMAR
MORRIS RED RIVER TITUS
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Mod (30%)
|
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
|
Mod (50%)
|
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 (80%)
|
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 
