MIL-OSI USA: SPC Severe Thunderstorm Watch 515

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 515
NWS Storm Prediction Center Norman OK
430 PM MDT Tue Jul 15 2025

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of
Central Wyoming

* Effective this Tuesday afternoon and evening from 430 PM until
1000 PM MDT.

* Primary threats include…
Scattered damaging wind gusts to 70 mph possible
Isolated large hail events to 1 inch in diameter possible

SUMMARY…A band of thunderstorms will likely intensify while moving
eastward across central Wyoming, with the potential to produce
severe outflow gusts up to 70 mph and isolated large hail up to 1
inch in diameter.

The severe thunderstorm watch area is approximately along and 60
statute miles north and south of a line from 40 miles northwest of
Riverton WY to 45 miles north northeast of Casper WY. 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 513…WW 514…

AVIATION…A few severe thunderstorms with hail surface and aloft to
1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few
cumulonimbi with maximum tops to 450. Mean storm motion vector
27025.

…Thompson

SEL5

URGENT – IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 515
NWS Storm Prediction Center Norman OK
430 PM MDT Tue Jul 15 2025

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of
Central Wyoming

* Effective this Tuesday afternoon and evening from 430 PM until
1000 PM MDT.

* Primary threats include…
Scattered damaging wind gusts to 70 mph possible
Isolated large hail events to 1 inch in diameter possible

SUMMARY…A band of thunderstorms will likely intensify while moving
eastward across central Wyoming, with the potential to produce
severe outflow gusts up to 70 mph and isolated large hail up to 1
inch in diameter.

The severe thunderstorm watch area is approximately along and 60
statute miles north and south of a line from 40 miles northwest of
Riverton WY to 45 miles north northeast of Casper WY. 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 513…WW 514…

AVIATION…A few severe thunderstorms with hail surface and aloft to
1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few
cumulonimbi with maximum tops to 450. Mean storm motion vector
27025.

…Thompson

Note: The Aviation Watch (SAW) product is an approximation to the watch area. The actual watch is depicted by the shaded areas.
SAW5
WW 515 SEVERE TSTM WY 152230Z – 160400Z
AXIS..60 STATUTE MILES NORTH AND SOUTH OF LINE..
40NW RIW/RIVERTON WY/ – 45NNE CPR/CASPER WY/
..AVIATION COORDS.. 50NM N/S /31W BOY – 26NNE DDY/
HAIL SURFACE AND ALOFT..1 INCH. WIND GUSTS..60 KNOTS.
MAX TOPS TO 450. MEAN STORM MOTION VECTOR 27025.

LAT…LON 44350901 44370613 42630613 42610901

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

Watch 515 Status Report Message has not been issued yet.

Note:  Click for Complete Product Text.Tornadoes

Probability of 2 or more tornadoes

Low ( 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.

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