Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL7
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 477
NWS Storm Prediction Center Norman OK
620 AM CDT Mon Aug 31 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Arkansas
Extreme eastern Oklahoma
* Effective this Monday morning and afternoon from 620 AM until
200 PM CDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph possible
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...A growing and increasingly organized thunderstorms
cluster, already responsible for a measured 51-kt gust at Muskogee
OK, may persist and push well into Arkansas into midday, in a
favorably moist and unstable environment. Severe wind remains the
primary concern, with isolated hail possible.
The severe thunderstorm watch area is approximately along and 50
statute miles either side of a line from 25 miles northwest of
Poteau OK to 30 miles east of Pine Bluff AR. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU7).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
AVIATION...A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 600. Mean storm motion vector
29035.
...Edwards
SEL7
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 477
NWS Storm Prediction Center Norman OK
620 AM CDT Mon Aug 31 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Arkansas
Extreme eastern Oklahoma
* Effective this Monday morning and afternoon from 620 AM until
200 PM CDT.
* Primary threats include...
Scattered damaging winds and isolated significant gusts to 75
mph possible
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...A growing and increasingly organized thunderstorms
cluster, already responsible for a measured 51-kt gust at Muskogee
OK, may persist and push well into Arkansas into midday, in a
favorably moist and unstable environment. Severe wind remains the
primary concern, with isolated hail possible.
The severe thunderstorm watch area is approximately along and 50
statute miles either side of a line from 25 miles northwest of
Poteau OK to 30 miles east of Pine Bluff AR. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU7).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
&&
AVIATION...A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 600. Mean storm motion vector
29035.
...Edwards
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW7
WW 477 SEVERE TSTM AR OK 311120Z - 311900Z
AXIS..50 STATUTE MILES EITHER SIDE OF LINE..
25NW RKR/POTEAU OK/ - 30E PBF/PINE BLUFF AR/
..AVIATION COORDS.. 45NM EITHER SIDE /33W FSM - 49SE LIT/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..65 KNOTS.
MAX TOPS TO 600. MEAN STORM MOTION VECTOR 29035.
LAT...LON 35979468 34869115 33489165 34589518
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU7.
Watch 477 Status Report Messages:
STATUS REPORT #4 ON WW 477
VALID 311535Z - 311640Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 N ELD TO
10 ENE PBF TO 50 SSE BVX.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1651.
..LEITMAN..08/31/20
ATTN...WFO...LZK...TSA...
&&
STATUS REPORT FOR WS 477
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ARC001-025-079-095-311640-
AR
. ARKANSAS COUNTIES INCLUDED ARE
ARKANSAS CLEVELAND LINCOLN
MONROE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 477
VALID 311425Z - 311540Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 ENE DEQ
TO 25 ESE HOT TO 20 NW PBF TO 40 S BVX.
..LEITMAN..08/31/20
ATTN...WFO...LZK...TSA...
&&
STATUS REPORT FOR WS 477
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ARC001-019-025-039-053-069-079-085-095-109-117-311540-
AR
. ARKANSAS COUNTIES INCLUDED ARE
ARKANSAS CLARK CLEVELAND
DALLAS GRANT JEFFERSON
LINCOLN LONOKE MONROE
PIKE PRAIRIE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 477
VALID 311340Z - 311440Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 NW DEQ TO
40 SE RKR TO 10 WNW HOT TO 15 SE HOT TO 25 SW LIT TO 20 NW LIT TO
45 WSW BVX.
..LEITMAN..08/31/20
ATTN...WFO...LZK...TSA...
&&
STATUS REPORT FOR WS 477
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ARC001-019-025-039-045-051-053-059-069-079-085-095-097-109-113-
117-119-125-311440-
AR
. ARKANSAS COUNTIES INCLUDED ARE
ARKANSAS CLARK CLEVELAND
DALLAS FAULKNER GARLAND
GRANT HOT SPRING JEFFERSON
LINCOLN LONOKE MONROE
MONTGOMERY PIKE POLK
PRAIRIE PULASKI SALINE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 477
VALID 311255Z - 311340Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..KERR..08/31/20
ATTN...WFO...LZK...TSA...
&&
STATUS REPORT FOR WS 477
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ARC001-019-025-029-033-039-045-047-051-053-059-069-071-079-083-
085-095-097-105-109-113-115-117-119-125-127-131-149-311340-
AR
. ARKANSAS COUNTIES INCLUDED ARE
ARKANSAS CLARK CLEVELAND
CONWAY CRAWFORD DALLAS
FAULKNER FRANKLIN GARLAND
GRANT HOT SPRING JEFFERSON
JOHNSON LINCOLN LOGAN
LONOKE MONROE MONTGOMERY
PERRY PIKE POLK
POPE PRAIRIE PULASKI
SALINE SCOTT SEBASTIAN
YELL
$$
OKC079-135-311340-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
LE FLORE SEQUOYAH
$$
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 (EF2-EF5) tornadoes
|
Low (<2%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (40%)
|
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
|
Mod (60%)
|
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% (EF2-EF5 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 
@NWSSPC
