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.
SEL0
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 230
NWS STORM PREDICTION CENTER NORMAN OK
1135 PM CDT SAT MAY 2 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
SOUTHWEST ARKANSAS
NORTHERN LOUISIANA
SOUTHEAST OKLAHOMA
NORTHEAST TEXAS
EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 1135 PM
UNTIL 500 AM CDT.
HAIL TO 2 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 75 MILES WEST OF
TEXARKANA ARKANSAS TO 15 MILES NORTH OF MONROE LOUISIANA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU0).
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.
OTHER WATCH INFORMATION...CONTINUE...WW 228...WW 229...
DISCUSSION...ANOTHER CLUSTER OF INTENSE THUNDERSTORMS WILL TRACK
EASTWARD FROM NORTHEAST TX INTO PARTS OF SOUTHERN AR/NORTHERN LA
DURING THE EARLY MORNING HOURS. THE STRONGEST CELLS IN THIS CLUSTER
WILL REMAIN CAPABLE OF LARGE HAIL AND LOCALLY DAMAGING WINDS FOR
ANOTHER FEW HOURS.
AVIATION...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 27030.
...HART
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW0
WW 230 SEVERE TSTM AR LA OK TX 030435Z - 031000Z
AXIS..45 STATUTE MILES NORTH AND SOUTH OF LINE..
75W TXK/TEXARKANA AR/ - 15N MLU/MONROE LA/
..AVIATION COORDS.. 40NM N/S /62W TXK - 13N MLU/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 27030.
LAT...LON 34099530 33389202 32099202 32799530
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU0.
Watch 230 Status Report Messages:
STATUS REPORT #5 ON WW 230
VALID 030935Z - 031040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 SE PRX TO
40 NW ELD.
FOR ADDITIONAL INFORMATION SEE SPC MESOSCALE DISCUSSION 682.
..EDWARDS..05/03/09
ATTN...WFO...SHV...
&&
STATUS REPORT FOR WS 230
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ARC027-057-073-081-091-099-139-031040-
AR
. ARKANSAS COUNTIES INCLUDED ARE
COLUMBIA HEMPSTEAD LAFAYETTE
LITTLE RIVER MILLER NEVADA
UNION
$$
LAC015-017-027-061-073-111-119-031040-
LA
. LOUISIANA PARISHES INCLUDED ARE
BOSSIER CADDO CLAIBORNE
LINCOLN OUACHITA UNION
WEBSTER
$$
TXC037-063-067-159-183-203-315-343-387-449-459-499-031040-
TX
. TEXAS COUNTIES INCLUDED ARE
BOWIE CAMP CASS
FRANKLIN GREGG HARRISON
MARION MORRIS RED RIVER
TITUS UPSHUR WOOD
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #4 ON WW 230
VALID 030825Z - 030940Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 SSE PRX
TO 25 WNW TXK TO 40 ENE TXK.
FOR ADDITIONAL INFORMATION SEE SPC MESOSCALE DISCUSSION 682.
..EDWARDS..05/03/09
ATTN...WFO...SHV...
&&
STATUS REPORT FOR WS 230
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ARC027-057-073-081-091-099-139-030940-
AR
. ARKANSAS COUNTIES INCLUDED ARE
COLUMBIA HEMPSTEAD LAFAYETTE
LITTLE RIVER MILLER NEVADA
UNION
$$
LAC015-017-027-061-073-111-119-030940-
LA
. LOUISIANA PARISHES INCLUDED ARE
BOSSIER CADDO CLAIBORNE
LINCOLN OUACHITA UNION
WEBSTER
$$
TXC037-063-067-159-183-203-315-343-387-449-459-499-030940-
TX
. TEXAS COUNTIES INCLUDED ARE
BOWIE CAMP CASS
FRANKLIN GREGG HARRISON
MARION MORRIS RED RIVER
TITUS UPSHUR WOOD
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 230
VALID 030745Z - 030840Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE SPC MESOSCALE DISCUSSION 682.
..EDWARDS..05/03/09
ATTN...WFO...SHV...
&&
STATUS REPORT FOR WS 230
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ARC027-057-073-081-091-099-139-030840-
AR
. ARKANSAS COUNTIES INCLUDED ARE
COLUMBIA HEMPSTEAD LAFAYETTE
LITTLE RIVER MILLER NEVADA
UNION
$$
LAC015-017-027-061-073-111-119-030840-
LA
. LOUISIANA PARISHES INCLUDED ARE
BOSSIER CADDO CLAIBORNE
LINCOLN OUACHITA UNION
WEBSTER
$$
TXC037-063-067-159-183-203-315-343-387-449-459-499-030840-
TX
. TEXAS COUNTIES INCLUDED ARE
BOWIE CAMP CASS
FRANKLIN GREGG HARRISON
MARION MORRIS RED RIVER
TITUS UPSHUR WOOD
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 230
VALID 030630Z - 030740Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 SSE PRX
TO 30 WNW TXK TO 30 NNE TXK.
..EDWARDS..05/03/09
ATTN...WFO...SHV...
&&
STATUS REPORT FOR WS 230
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ARC027-057-073-081-091-099-139-030740-
AR
. ARKANSAS COUNTIES INCLUDED ARE
COLUMBIA HEMPSTEAD LAFAYETTE
LITTLE RIVER MILLER NEVADA
UNION
$$
LAC015-017-027-061-073-111-119-030740-
LA
. LOUISIANA PARISHES INCLUDED ARE
BOSSIER CADDO CLAIBORNE
LINCOLN OUACHITA UNION
WEBSTER
$$
TXC037-063-067-159-183-203-315-343-387-449-459-499-030740-
TX
. TEXAS COUNTIES INCLUDED ARE
BOWIE CAMP CASS
FRANKLIN GREGG HARRISON
MARION MORRIS RED RIVER
TITUS UPSHUR WOOD
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 230
VALID 030555Z - 030640Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 SE PRX TO
30 SSW DEQ TO 5 SE DEQ.
FOR ADDITIONAL INFORMATION SEE SPC MESOSCALE DISCUSSION 681.
STATUS REPORT DELAYED BY SOFTWARE CRASHES.
..EDWARDS..05/03/09
ATTN...WFO...SHV...
&&
STATUS REPORT FOR WS 230
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ARC027-057-061-073-081-091-099-133-139-030640-
AR
. ARKANSAS COUNTIES INCLUDED ARE
COLUMBIA HEMPSTEAD HOWARD
LAFAYETTE LITTLE RIVER MILLER
NEVADA SEVIER UNION
$$
LAC015-017-027-061-073-111-119-030640-
LA
. LOUISIANA PARISHES INCLUDED ARE
BOSSIER CADDO CLAIBORNE
LINCOLN OUACHITA UNION
WEBSTER
$$
TXC037-063-067-159-183-203-315-343-387-449-459-499-030640-
TX
. TEXAS COUNTIES INCLUDED ARE
BOWIE CAMP CASS
FRANKLIN GREGG HARRISON
MARION MORRIS RED RIVER
TITUS UPSHUR WOOD
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (20%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (5%)
|
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 (30%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Low (20%)
|
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 
