MIL-OSI USA: SPC Severe Thunderstorm Watch 265

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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.
SEL5

URGENT – IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 265
NWS Storm Prediction Center Norman OK
1220 PM CDT Sun Jun 13 2021

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of
Western Alabama
Eastern Louisiana
Mississippi
Coastal Waters

* Effective this Sunday afternoon and evening from 1220 PM until
700 PM CDT.

* Primary threats include…
Scattered damaging winds likely with isolated significant gusts
to 80 mph possible
Isolated large hail events to 1.5 inches in diameter possible

SUMMARY…Several loosely organized multicell clusters should spread
south-southwest across the region through early evening. Damaging
winds will be the primary hazard.

The severe thunderstorm watch area is approximately along and 75
statute miles east and west of a line from 30 miles northeast of
Tupelo MS to 40 miles west of Slidell LA. For a complete depiction
of the watch see the associated watch outline update (WOUS64 KWNS
WOU5).

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 264…

AVIATION…A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 70 knots. A
few cumulonimbi with maximum tops to 600. Mean storm motion vector
01020.

…Grams

Note: The Aviation Watch (SAW) product is an approximation to the watch area. The actual watch is depicted by the shaded areas.
SAW5
WW 265 SEVERE TSTM AL LA MS CW 131720Z – 140000Z
AXIS..75 STATUTE MILES EAST AND WEST OF LINE..
30NE TUP/TUPELO MS/ – 40W ASD/SLIDELL LA/
..AVIATION COORDS.. 65NM E/W /46W MSL – 39NW HRV/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..70 KNOTS.
MAX TOPS TO 600. MEAN STORM MOTION VECTOR 01020.

LAT…LON 34578708 30348923 30349175 34578972

THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU5.

Watch 265 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

Low (20%)

Probability of 1 or more hailstones > 2 inches

Low (10%)

Combined Severe Hail/WindProbability 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% (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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