Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL5
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 335
NWS STORM PREDICTION CENTER NORMAN OK
850 PM CDT SUN MAY 22 2011
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHERN ARKANSAS
THE SOUTHERN MISSOURI BOOTHEEL
EASTERN OKLAHOMA
EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 850 PM UNTIL
400 AM CDT.
TORNADOES...HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 140 STATUTE
MILES EAST AND WEST OF A LINE FROM 50 MILES EAST NORTHEAST OF
FLIPPIN ARKANSAS TO 45 MILES EAST SOUTHEAST OF POTEAU OKLAHOMA.
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.
OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 330. WATCH NUMBER 330 WILL NOT BE IN EFFECT AFTER
850 PM CDT. CONTINUE...WW 323...WW 325...WW 326...WW 327...WW
329...WW 332...WW 333...WW 334...
DISCUSSION...THUNDERSTORM CLUSTERS WITH EMBEDDED SUPERCELLS/BOWS
WILL PERSIST OVERNIGHT WHILE DEVELOPING ESEWD ALONG A RESIDUAL
OUTFLOW BOUNDARY ACROSS NRN AR. THE 00Z LZK SOUNDING REVEALED A
RELATIVELY MOIST AND STRONGLY SHEARED ENVIRONMENT THAT APPEARS TO BE
REPRESENTATIVE OF NRN AR...THUS A RISK FOR TORNADOES IS EXPECTED TO
PERSIST WITH SUPERCELLS AND BOW/BOUNDARY INTERACTIONS. DAMAGING
WINDS ARE ALSO LIKELY THE CELL MERGERS AND BOWING SEGMENTS...AS WELL
AS THE RISK FOR LARGE HAIL GIVEN A RESERVOIR OF STRONG INSTABILITY
ACROSS OK/AR IN ADVANCE OF THE STORMS.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 28035.
...THOMPSON
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW5
WW 335 TORNADO AR MO OK 230150Z - 230900Z
AXIS..140 STATUTE MILES EAST AND WEST OF LINE..
50ENE FLP/FLIPPIN AR/ - 45ESE RKR/POTEAU OK/
..AVIATION COORDS.. 120NM E/W /40WNW ARG - 41SSE FSM/
HAIL SURFACE AND ALOFT..2.5 INCHES. WIND GUSTS..70 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 28035.
REPLACES WW 330..AR
LAT...LON 36458912 34749141 34749634 36459416
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU5.
Watch 335 Status Report Messages:
STATUS REPORT #2 ON WW 335
VALID 230450Z - 230540Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 S RKR TO
20 NW RKR TO 10 SSE MKO.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 880
..DIAL..05/23/11
ATTN...WFO...LZK...TSA...MEG...
&&
STATUS REPORT FOR WT 335
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ARC005-007-009-015-021-023-029-031-033-035-037-045-047-049-055-
063-065-067-071-075-083-087-089-093-101-105-111-115-121-123-127-
129-131-135-137-141-143-145-147-149-230540-
AR
. ARKANSAS COUNTIES INCLUDED ARE
BAXTER BENTON BOONE
CARROLL CLAY CLEBURNE
CONWAY CRAIGHEAD CRAWFORD
CRITTENDEN CROSS FAULKNER
FRANKLIN FULTON GREENE
INDEPENDENCE IZARD JACKSON
JOHNSON LAWRENCE LOGAN
MADISON MARION MISSISSIPPI
NEWTON PERRY POINSETT
POPE RANDOLPH ST. FRANCIS
SCOTT SEARCY SEBASTIAN
SHARP STONE VAN BUREN
WASHINGTON WHITE WOODRUFF
YELL
$$
MOC069-155-230540-
MO
. MISSOURI COUNTIES INCLUDED ARE
DUNKLIN PEMISCOT
$$
OKC001-021-041-101-135-230540-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
ADAIR CHEROKEE DELAWARE
MUSKOGEE SEQUOYAH
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 335
VALID 230240Z - 230340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..GARNER..05/23/11
ATTN...WFO...LZK...TSA...MEG...
&&
STATUS REPORT FOR WT 335
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ARC005-007-009-015-021-023-029-031-033-035-037-045-047-049-055-
063-065-067-071-075-083-087-089-093-101-105-111-115-121-123-127-
129-131-135-137-141-143-145-147-149-230340-
AR
. ARKANSAS COUNTIES INCLUDED ARE
BAXTER BENTON BOONE
CARROLL CLAY CLEBURNE
CONWAY CRAIGHEAD CRAWFORD
CRITTENDEN CROSS FAULKNER
FRANKLIN FULTON GREENE
INDEPENDENCE IZARD JACKSON
JOHNSON LAWRENCE LOGAN
MADISON MARION MISSISSIPPI
NEWTON PERRY POINSETT
POPE RANDOLPH ST. FRANCIS
SCOTT SEARCY SEBASTIAN
SHARP STONE VAN BUREN
WASHINGTON WHITE WOODRUFF
YELL
$$
MOC069-155-230340-
MO
. MISSOURI COUNTIES INCLUDED ARE
DUNKLIN PEMISCOT
$$
OKC001-021-023-041-061-077-079-091-101-121-127-135-230340-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
ADAIR CHEROKEE CHOCTAW
DELAWARE HASKELL LATIMER
LE FLORE MCINTOSH MUSKOGEE
PITTSBURG PUSHMATAHA SEQUOYAH
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Mod (60%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Mod (30%)
|
Wind
Probability of 10 or more severe wind events
|
High (70%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (40%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (60%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Mod (50%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (>95%)
|
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.