

109 

WWUS20 KWNS 172000

SEL1

SPC WW 172000

PAZ000-180000-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 591

NWS Storm Prediction Center Norman OK

405 PM EDT Sat Aug 17 2019



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Westner and northern Pennsylvania



* Effective this Saturday afternoon and evening from 405 PM until

  800 PM EDT.



* Primary threats include...

  Scattered damaging wind gusts to 65 mph possible

  Isolated large hail events to 1.5 inches in diameter possible



SUMMARY...A few supercells have developed across northwest into

north-central Pennsylvania and should move east-southeast over the

next few hours, before weakening across the southern portion of the

state.



The severe thunderstorm watch area is approximately along and 35

statute miles north and south of a line from 35 miles north

northwest of Pittsburgh PA to 20 miles northeast of Williamsport PA.

For a complete depiction of the watch see the associated watch

outline update (WOUS64 KWNS WOU1).



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 590...



AVIATION...A few severe thunderstorms with hail surface and aloft to

1.5 inches. Extreme turbulence and surface wind gusts to 55 knots. A

few cumulonimbi with maximum tops to 500. Mean storm motion vector

28025.



...Grams



897 

WWUS20 KWNS 172000 CCA

SEL1

SPC WW 172000 CCA

PAZ000-180000-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 591

NWS Storm Prediction Center Norman OK

405 PM EDT Sat Aug 17 2019



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Western and northern Pennsylvania



* Effective this Saturday afternoon and evening from 405 PM until

  800 PM EDT.



* Primary threats include...

  Scattered damaging wind gusts to 65 mph possible

  Isolated large hail events to 1.5 inches in diameter possible



SUMMARY...A few supercells have developed across northwest into

north-central Pennsylvania and should move east-southeast over the

next few hours, before weakening across the southern portion of the

state.



The severe thunderstorm watch area is approximately along and 35

statute miles north and south of a line from 35 miles north

northwest of Pittsburgh PA to 20 miles northeast of Williamsport PA.





For a complete depiction of the watch see the associated watch

outline update (WOUS64 KWNS WOU1).



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 590...



AVIATION...A few severe thunderstorms with hail surface and aloft to

1.5 inches. Extreme turbulence and surface wind gusts to 55 knots. A

few cumulonimbi with maximum tops to 500. Mean storm motion vector

28025.



...Grams

