MIL-OSI USA: SPC Severe Thunderstorm Watch 220

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Source: US National Oceanic and Atmospheric Administration

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 220
NWS Storm Prediction Center Norman OK
255 PM CDT Sun May 15 2022

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of
Southern Arkansas
Far southeast Oklahoma
Far northeast Texas

* Effective this Sunday afternoon and evening from 255 PM until
900 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…Southward-moving MCS over western Arkansas should spread
into southern Arkansas, while additional storms may develop along
its western flank this evening.

The severe thunderstorm watch area is approximately along and 45
statute miles north and south of a line from 25 miles west northwest
of De Queen AR to 15 miles east southeast of Monticello AR. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU0).

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.

&&

OTHER WATCH INFORMATION…CONTINUE…WW 217…WW 218…WW 219…

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 550. Mean storm motion vector
35030.

…Grams

SEL0

URGENT – IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 220
NWS Storm Prediction Center Norman OK
255 PM CDT Sun May 15 2022

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of
Southern Arkansas
Far southeast Oklahoma
Far northeast Texas

* Effective this Sunday afternoon and evening from 255 PM until
900 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…Southward-moving MCS over western Arkansas should spread
into southern Arkansas, while additional storms may develop along
its western flank this evening.

The severe thunderstorm watch area is approximately along and 45
statute miles north and south of a line from 25 miles west northwest
of De Queen AR to 15 miles east southeast of Monticello AR. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU0).

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.

&&

OTHER WATCH INFORMATION…CONTINUE…WW 217…WW 218…WW 219…

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 550. Mean storm motion vector
35030.

…Grams

Note: The Aviation Watch (SAW) product is an approximation to the watch area. The actual watch is depicted by the shaded areas.
SAW0
WW 220 SEVERE TSTM AR OK TX 151955Z – 160200Z
AXIS..45 STATUTE MILES NORTH AND SOUTH OF LINE..
25WNW DEQ/DE QUEEN AR/ – 15ESE LLQ/MONTICELLO AR/
..AVIATION COORDS.. 40NM N/S /55NW TXK – 62W SQS/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..65 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 35030.

LAT…LON 34849480 34219151 32919151 33549480

THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU0.

Watch 220 Status Report Message has not been issued yet.

Note:  Click for Complete Product Text.TornadoesProbability of 2 or more tornadoes

Low (10%)

Probability of 1 or more strong (EF2-EF5) tornadoes

Low ( 65 knots

Mod (40%)

HailProbability of 10 or more severe hail events

Mod (30%)

Probability of 1 or more hailstones > 2 inches

Low (20%)

Combined Severe Hail/WindProbability 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% (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.

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