Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
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Watch Status Reports.
SEL5
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 545
NWS STORM PREDICTION CENTER NORMAN OK
1230 PM CDT SAT JUL 4 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
NORTHERN ARKANSAS
EXTREME SOUTHERN MISSOURI
EASTERN OKLAHOMA
EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 1230 PM UNTIL
800 PM CDT.
HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 45
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES SOUTH
SOUTHWEST OF MUSKOGEE OKLAHOMA TO 25 MILES NORTH OF WALNUT RIDGE
ARKANSAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.
DISCUSSION...THUNDERSTORMS SHOULD CONTINUE TO INTENSIFY ALONG EWD
TRACKING MCS OUTFLOW MOVING INTO HOT/UNSTABLE AIRMASS FROM ERN OK
ACROSS NRN AR THIS AFTERNOON. DESPITE LIMITED MID-LEVEL
FLOW...SUFFICIENT LIFT ALONG LEADING EDGE OF COLD POOL...AND
STEEPENING LOW-LEVEL LAPSE RATES SHOULD CONTRIBUTE TO DAMAGING WIND
POTENTIAL AS STORMS MOVE/DEVELOP EAST THROUGH THE AFTERNOON.
AVIATION...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 28015.
...CARBIN
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW5
WW 545 SEVERE TSTM AR MO OK 041730Z - 050100Z
AXIS..45 STATUTE MILES NORTH AND SOUTH OF LINE..
50SSW MKO/MUSKOGEE OK/ - 25N ARG/WALNUT RIDGE AR/
..AVIATION COORDS.. 40NM N/S /10NNE MLC - 23N ARG/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 28015.
LAT...LON 35659570 37139093 35849093 34349570
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU5.
Watch 545 Status Report Messages:
STATUS REPORT #5 ON WW 545
VALID 050035Z - 050100Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 W MKO TO
5 SSW RUE.
WW 545 MAY BE EXTENDED LOCALLY TO 03Z. FOR ADDITIONAL INFORMATION
SEE MESOSCALE DISCUSSION 1436.
..PETERS..07/05/09
ATTN...WFO...LZK...TSA...MEG...SGF...
&&
STATUS REPORT FOR WS 545
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ARC083-127-131-149-050100-
AR
. ARKANSAS COUNTIES INCLUDED ARE
LOGAN SCOTT SEBASTIAN
YELL
$$
OKC061-077-079-121-127-135-050100-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
HASKELL LATIMER LE FLORE
PITTSBURG PUSHMATAHA SEQUOYAH
$$
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.
$$
STATUS REPORT #4 ON WW 545
VALID 042340Z - 050040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 W MKO TO
5 SSW RUE.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1433.
..PETERS..07/04/09
ATTN...WFO...LZK...TSA...MEG...SGF...
&&
STATUS REPORT FOR WS 545
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ARC083-127-131-149-050040-
AR
. ARKANSAS COUNTIES INCLUDED ARE
LOGAN SCOTT SEBASTIAN
YELL
$$
OKC061-077-079-121-127-135-050040-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
HASKELL LATIMER LE FLORE
PITTSBURG PUSHMATAHA SEQUOYAH
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 545
VALID 042240Z - 042340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 W MKO TO
5 SSW RUE.
..PETERS..07/04/09
ATTN...WFO...LZK...TSA...MEG...SGF...
&&
STATUS REPORT FOR WS 545
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ARC083-127-131-149-042340-
AR
. ARKANSAS COUNTIES INCLUDED ARE
LOGAN SCOTT SEBASTIAN
YELL
$$
OKC061-077-079-121-127-135-042340-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
HASKELL LATIMER LE FLORE
PITTSBURG PUSHMATAHA SEQUOYAH
$$
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.
$$
STATUS REPORT #2 ON WW 545
VALID 042140Z - 042240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 W MKO TO
5 SSW RUE.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1430.
..PETERS..07/04/09
ATTN...WFO...LZK...TSA...MEG...SGF...
&&
STATUS REPORT FOR WS 545
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ARC083-127-131-149-042240-
AR
. ARKANSAS COUNTIES INCLUDED ARE
LOGAN SCOTT SEBASTIAN
YELL
$$
OKC061-077-079-121-127-135-042240-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
HASKELL LATIMER LE FLORE
PITTSBURG PUSHMATAHA SEQUOYAH
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 545
VALID 042025Z - 042140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 W MKO TO
5 SSW RUE.
..SPC..07/04/09
ATTN...WFO...LZK...TSA...MEG...SGF...
&&
STATUS REPORT FOR WS 545
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ARC083-127-131-149-042140-
AR
. ARKANSAS COUNTIES INCLUDED ARE
LOGAN SCOTT SEBASTIAN
YELL
$$
OKC061-077-079-091-121-127-135-042140-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
HASKELL LATIMER LE FLORE
MCINTOSH PITTSBURG PUSHMATAHA
SEQUOYAH
$$
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
|
Low (10%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (<2%)
|
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
|
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 (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.