761 

WWUS51 KPBZ 172235

SQWPBZ



BULLETIN - IMMEDIATE BROADCAST REQUESTED

Snow Squall Warning

National Weather Service Pittsburgh PA

635 PM EDT Tue Mar 17 2026



PAC005-019-031-053-065-085-121-172300-

/O.NEW.KPBZ.SQ.W.0047.260317T2235Z-260317T2300Z/

Armstrong PA-Butler PA-Clarion PA-Forest PA-Jefferson PA-Mercer

PA-Venango PA-

635 PM EDT Tue Mar 17 2026



The National Weather Service in Pittsburgh has issued a



* Snow Squall Warning for...

  South Central Forest County in northwestern Pennsylvania...

  Southeastern Mercer County in northwestern Pennsylvania...

  Southern Venango County in northwestern Pennsylvania...

  Northern Armstrong County in west central Pennsylvania...

  Northern Butler County in west central Pennsylvania...

  Clarion County in west central Pennsylvania...

  Northwestern Jefferson PA County in west central Pennsylvania...



* Until 700 PM EDT.



* At 635 PM EDT, a dangerous snow squall was located near Knox,

  moving east at 30 mph.



  HAZARD...Flash freeze on roads and rapidly falling visibility due

           to intense bursts of heavy snow and gusty winds. Wind

           gusts up to 35 mph.



  SOURCE...Doppler radar and webcams.



  IMPACT...Travel will become difficult and potentially dangerous

           within minutes.



* Locations impacted include...

  Grove City, Clarion, Brookville, Knox, Rimersburg, Slippery Rock,

  New Bethlehem, Stoneboro, East Brady, Harrisville, Parker, Polk,

  Sligo, Sandy Lake, Emlenton, Strattanville, Summerville, Bruin and

  Clintonville.



This includes the following highways...

Interstate 80 in Pennsylvania between mile markers 18 and 85.

Interstate 79 in Pennsylvania between mile markers 112 and 121.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



Slow Down! Rapid changes in visibility and road conditions are

expected with this dangerous snow squall. Be alert for sudden

whiteout conditions.



Wet roadways will quickly freeze. Black ice will cause roads, bridges

and overpasses to become slick and dangerous. Slow down and be

prepared for sudden loss of traction.



&&



LAT...LON 4112 8024 4138 8009 4134 7950 4145 7919

      4141 7909 4134 7909 4135 7908 4135 7902

      4137 7898 4132 7886 4114 7900 4102 7913

      4093 7935 4105 8012 4107 8010 4111 8015

      4112 8020

TIME...MOT...LOC 2234Z 283DEG 26KT 4119 7951



SNOW SQUALL...OBSERVED



$$



MLB






912 

WWUS51 KPBZ 172250

SQWPBZ



Snow Squall Warning

National Weather Service Pittsburgh PA

650 PM EDT Tue Mar 17 2026



PAC005-019-031-053-065-085-121-172300-

/O.CON.KPBZ.SQ.W.0047.000000T0000Z-260317T2300Z/

Armstrong PA-Butler PA-Clarion PA-Forest PA-Jefferson PA-Mercer

PA-Venango PA-

650 PM EDT Tue Mar 17 2026



...SNOW SQUALL WARNING REMAINS IN EFFECT UNTIL 7 PM EDT FOR SOUTH

CENTRAL FOREST, SOUTHEASTERN MERCER, SOUTHERN VENANGO, NORTHERN

ARMSTRONG, NORTHERN BUTLER, CLARION AND NORTHWESTERN JEFFERSON PA

COUNTIES...



At 650 PM EDT, a dangerous snow squall was located near Clarion,

moving east at 30 mph.



HAZARD...Flash freeze on roads and rapidly falling visibility due to

         intense bursts of heavy snow and gusty winds. Wind gusts up

         to 35 mph.



SOURCE...Doppler radar and webcams.



IMPACT...Travel will become difficult and potentially dangerous

         within minutes.



Locations impacted include...

  Clarion, Brookville, Knox, Rimersburg, Slippery Rock, New

  Bethlehem, Stoneboro, East Brady, Harrisville, Parker, Polk, Sligo,

  Sandy Lake, Emlenton, Strattanville, Summerville, Bruin,

  Clintonville and Limestone.



This includes Interstate 80 in Pennsylvania between mile markers 25

and 85.



PRECAUTIONARY/PREPAREDNESS ACTIONS...



Slow Down! Rapid changes in visibility and road conditions are

expected with this dangerous snow squall. Be alert for sudden

whiteout conditions.



Wet roadways will quickly freeze. Black ice will cause roads, bridges

and overpasses to become slick and dangerous. Slow down and be

prepared for sudden loss of traction.



&&



LAT...LON 4107 8010 4117 8000 4126 8016 4138 8009

      4134 7950 4145 7919 4141 7909 4134 7909

      4135 7908 4135 7902 4137 7898 4132 7886

      4114 7900 4102 7913 4096 7940 4105 8012

TIME...MOT...LOC 2235Z 283DEG 26KT 4119 7950



SNOW SQUALL...OBSERVED



$$



MLB