Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL0
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 20
NWS STORM PREDICTION CENTER NORMAN OK
1235 PM CST WED FEB 1 2012
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
CENTRAL AND SOUTHERN ARKANSAS
NORTHERN LOUISIANA
EXTREME SOUTHEAST OKLAHOMA
NORTHEAST TEXAS
EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 1235 PM UNTIL
800 PM CST.
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 95
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 60 MILES SOUTHWEST
OF DE QUEEN ARKANSAS TO 50 MILES EAST NORTHEAST OF PINE BLUFF
ARKANSAS. 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.
DISCUSSION...A CLUSTER OF THUNDERSTORMS OVER SOUTHEAST OK WILL
SPREAD EASTWARD INTO AR...WHILE NEW STORMS POTENTIALLY DEVELOPING
SOUTHWARD INTO NORTHEAST TX. STEEP MID LEVEL LAPSE RATES AND
MODERATE CAPE VALUES WILL PROMOTE THE RISK OF A FEW INTENSE CELLS
CAPABLE OF LARGE HAIL AND GUSTY WINDS.
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 400. MEAN STORM
MOTION VECTOR 27035.
...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 20 SEVERE TSTM AR LA OK TX 011835Z - 020200Z
AXIS..95 STATUTE MILES NORTH AND SOUTH OF LINE..
60SW DEQ/DE QUEEN AR/ - 50ENE PBF/PINE BLUFF AR/
..AVIATION COORDS.. 85NM N/S /54W TXK - 54ESE LIT/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 400. MEAN STORM MOTION VECTOR 27035.
LAT...LON 34819513 35819112 33069112 32069513
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU0.
Watch 20 Status Report Messages:
STATUS REPORT #3 ON WW 20
VALID 012325Z - 020040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 NW MLU TO
60 WSW MEM.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 88
..COHEN..02/01/12
ATTN...WFO...LZK...SHV...
&&
STATUS REPORT FOR WS 20
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ARC041-043-020040-
AR
. ARKANSAS COUNTIES INCLUDED ARE
DESHA DREW
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 20
VALID 012230Z - 012340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 SW SHV TO
20 SW PBF TO 40 SSW JBR.
..COHEN..02/01/12
ATTN...WFO...LZK...SHV...
&&
STATUS REPORT FOR WS 20
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ARC001-011-013-025-041-043-079-095-139-147-012340-
AR
. ARKANSAS COUNTIES INCLUDED ARE
ARKANSAS BRADLEY CALHOUN
CLEVELAND DESHA DREW
LINCOLN MONROE UNION
WOODRUFF
$$
LAC013-015-027-061-111-119-012340-
LA
. LOUISIANA PARISHES INCLUDED ARE
BIENVILLE BOSSIER CLAIBORNE
LINCOLN UNION WEBSTER
$$
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.
$$
STATUS REPORT #1 ON WW 20
VALID 011925Z - 012040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 NNE PRX
TO 25 NW DEQ TO 35 ESE RKR TO 15 NNE RUE.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 85
..JEWELL..02/01/12
ATTN...WFO...LZK...SHV...
&&
STATUS REPORT FOR WS 20
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ARC001-011-013-019-025-027-029-039-041-043-045-051-053-057-059-
061-069-073-079-081-085-091-095-097-099-103-105-109-113-115-117-
119-125-127-133-139-145-147-149-012040-
AR
. ARKANSAS COUNTIES INCLUDED ARE
ARKANSAS BRADLEY CALHOUN
CLARK CLEVELAND COLUMBIA
CONWAY DALLAS DESHA
DREW FAULKNER GARLAND
GRANT HEMPSTEAD HOT SPRING
HOWARD JEFFERSON LAFAYETTE
LINCOLN LITTLE RIVER LONOKE
MILLER MONROE MONTGOMERY
NEVADA OUACHITA PERRY
PIKE POLK POPE
PRAIRIE PULASKI SALINE
SCOTT SEVIER UNION
WHITE WOODRUFF YELL
$$
LAC013-015-017-027-061-111-119-012040-
LA
. LOUISIANA PARISHES INCLUDED ARE
BIENVILLE BOSSIER CADDO
CLAIBORNE LINCOLN UNION
WEBSTER
$$
OKC089-012040-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
MCCURTAIN
$$
TXC037-063-067-159-183-203-315-343-387-449-459-499-012040-
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 (60%)
|
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 (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.