Shady Grove, PA Warnings, Watches and Advisories

When a severe thunderstorm warning is issued, the storm may produce damaging winds, large hail, dangerous lightning, and heavy rain. In some cases, heavy rainfall produced by a severe storm can also lead to flash flooding. Do not drive vehicles through flooded areas. The water depth or fast flowing water/mud/debris from a flash flood will make road conditions unsafe. Do not rely soley on data presented here or other third-party websites - always check your official national and local weather service agency website, socials, radio and/or TV stations for making critical decisions related to weather events.

Please carefully read each posted Warning and Alert as it relates to the area(s) being affected. We may provide a wider range of issued severe weather warnings for surrounding cities and counties, so some alerts may not directly impact this location. This is done to help with preparing for severe weather that may overlap or be heading towards Shady Grove.

Use the Radar Maps link provided to understand the trajectory of a storm.

Severe Thunderstorm Warning issued September 2 at 10:48AM EDT until September 2 at 11:30AM EDT by NWS State College PA

SVRCTP The National Weather Service in State College PA has issued a * Severe Thunderstorm Warning for... Cumberland County in south central Pennsylvania... Southwestern Juniata County in central Pennsylvania... Southwestern Mifflin County in central Pennsylvania... Perry County in south central Pennsylvania... * Until 1130 AM EDT. * At 1047 AM EDT, a severe thunderstorm was located over Blacklog, moving southeast at 45 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * This severe thunderstorm will be near... Blacklog and Honey Grove around 1050 AM EDT. Loysville and East Waterford around 1100 AM EDT. Carlisle, New Kingstown, and Shermansdale around 1120 AM EDT. Mechanicsburg and Shiremanstown around 1130 AM EDT. Other locations impacted by this severe thunderstorm include Landisburg, Blain, McVeytown, New Germantown, and Atkinson Mills. Radar has indicated rotation within this severe thunderstorm. Although a tornado is not immediately likely, tornadoes can develop quickly during severe thunderstorms. This includes the following Interstates... The Pennsylvania Turnpike from mile markers 209 to 239. Interstate 81 from mile markers 36 to 65. Interstate 83 from mile markers 41 to 42.

Special Weather Statement issued September 2 at 10:39AM EDT by NWS State College PA

At 1039 AM EDT, Doppler radar was tracking strong thunderstorms along a line extending from Lock Haven to 16 miles south of Jersey Shore to 16 miles southwest of Mifflinburg to 10 miles east of Lewistown. Movement was southeast at 45 mph. HAZARD...Wind gusts up to 50 mph. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Strong thunderstorms will be near... Lock Haven, Mill Hall, and Mcalisterville around 1045 AM EDT. R.B. Winter State Park, Penns Creek, and Mount Pleasant Mills around 1050 AM EDT. Mifflinburg, Fremont, and Kreamer around 1055 AM EDT. Port Trevorton, Millersburg, and Forest Hill around 1100 AM EDT. Selinsgrove, Kratzerville, and Vicksburg around 1105 AM EDT. Dehart Dam, Hummels Wharf, and Shamokin Dam around 1110 AM EDT. Other locations impacted by these storms include Gratz, Beavertown, Liverpool, Wagner, and Wiconisco.

Severe Thunderstorm Warning issued September 2 at 10:33AM EDT until September 2 at 11:15AM EDT by NWS State College PA

SVRCTP The National Weather Service in State College PA has issued a * Severe Thunderstorm Warning for... Blair County in central Pennsylvania... Northeastern Cambria County in central Pennsylvania... West central Huntingdon County in central Pennsylvania... * Until 1115 AM EDT. * At 1033 AM EDT, a severe thunderstorm was located over Carrolltown, moving southeast at 45 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * This severe thunderstorm will be near... Loretto, Gallitzin, and Cresson around 1040 AM EDT. Altoona, Hollidaysburg, and Lakemont around 1050 AM EDT. Roaring Spring around 1100 AM EDT. Entriken and Martinsburg around 1110 AM EDT. Other locations impacted by this severe thunderstorm include Colver, Tunnelhill, Cassandra, Marklesburg, and McConnellstown. Radar has indicated rotation within this severe thunderstorm. Although a tornado is not immediately likely, tornadoes can develop quickly during severe thunderstorms. This includes Interstate 99 from mile markers 17 to 43.

Severe Thunderstorm Warning issued September 2 at 10:20AM EDT until September 2 at 11:00AM EDT by NWS State College PA

SVRCTP The National Weather Service in State College PA has issued a * Severe Thunderstorm Warning for... Northeastern Blair County in central Pennsylvania... Northern Huntingdon County in central Pennsylvania... Northwestern Juniata County in central Pennsylvania... Central Mifflin County in central Pennsylvania... * Until 1100 AM EDT. * At 1020 AM EDT, a severe thunderstorm was located over Warriors Mark, moving southeast at 50 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * This severe thunderstorm will be near... Whipple Dam State Park and Mcalevys Fort around 1030 AM EDT. Belleville around 1040 AM EDT. Lewistown, Juniata Terrace, and Strodes Mills around 1050 AM EDT. Other locations impacted by this severe thunderstorm include Mifflintown, Petersburg, Maitland, Barrville, and Alexandria. Radar has indicated rotation within this severe thunderstorm. Although a tornado is not immediately likely, tornadoes can develop quickly during severe thunderstorms. This includes Interstate 99 from mile markers 44 to 55.

Flood Advisory issued September 2 at 10:13AM EDT until September 2 at 12:30PM EDT by NWS Cleveland OH

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Northeastern Crawford County in northwestern Pennsylvania... Southeastern Erie County in northwestern Pennsylvania... * WHEN...Until 1230 PM EDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 1013 AM EDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 1 and 1.5 inches of rain have fallen. - Additional rainfall amounts up to 1.5 inches are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Canadohta Lake, Lincolnville, Riceville, Mill Village and Spartansburg. - Please visit www.weather.gov/safety/flood for flood safety and preparedness information.

Special Weather Statement issued September 2 at 9:59AM EDT by NWS Cleveland OH

At 959 AM EDT, Doppler radar was tracking a strong thunderstorm near Waterford, or 18 miles southeast of Erie, moving southeast at 45 mph. HAZARD...Wind gusts up to 50 mph and nickel size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor hail damage to vegetation is possible. Locations impacted include... Corry, Edinboro, Titusville, Union City, Waterford, Riceville, Canadohta Lake, Lincolnville, Hydetown, Mill Village, Spartansburg, and Elgin.

Flash Flood Warning issued September 2 at 9:58AM EDT until September 2 at 12:00PM EDT by NWS Cleveland OH

At 958 AM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1.5 and 2.5 inches of rain have fallen. Flooding impacts will continue, but no additional rainfall is expected. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. Some locations that will experience flash flooding include... Erie, North East, Northwest Harborcreek, Harborcreek, Lawrence Park, Wesleyville and Northwest Harborcr.

Flood Advisory issued September 2 at 9:49AM EDT until September 2 at 12:30PM EDT by NWS Cleveland OH

* WHAT...Flooding caused by excessive rainfall is expected. * WHERE...Southeastern Erie County in northwestern Pennsylvania... * WHEN...Until 1230 PM EDT. * IMPACTS...Minor flooding in low-lying and poor drainage areas. * ADDITIONAL DETAILS... - At 949 AM EDT, Doppler radar indicated heavy rain due to thunderstorms. Minor flooding is ongoing or expected to begin shortly in the advisory area. Between 1 and 1.5 inches of rain have fallen. - Additional rainfall amounts up to 1 inch are expected over the area. This additional rain will result in minor flooding. - Some locations that will experience flooding include... Corry, Union City, Waterford, Wattsburg, Mill Village and Elgin. - Please visit www.weather.gov/safety/flood for flood safety and preparedness information.

Severe Thunderstorm Watch issued September 2 at 9:23AM EDT until September 2 at 2:00PM EDT by NWS State College PA

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH 642 IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON FOR THE FOLLOWING AREAS IN PENNSYLVANIA THIS WATCH INCLUDES 19 COUNTIES IN CENTRAL PENNSYLVANIA ADAMS BEDFORD BLAIR CAMBRIA CENTRE CLEARFIELD CLINTON CUMBERLAND DAUPHIN FRANKLIN FULTON HUNTINGDON JUNIATA MIFFLIN PERRY SNYDER SOMERSET UNION YORK THIS INCLUDES THE CITIES OF ALTOONA, BEDFORD, CARLISLE, CHAMBERSBURG, CLEARFIELD, DUBOIS, GETTYSBURG, HARRISBURG, HERSHEY, HUNTINGDON, JOHNSTOWN, LEWISBURG, LEWISTOWN, LOCK HAVEN, MCCONNELLSBURG, MIFFLINTOWN, MOUNT UNION, NEWPORT, RENOVO, SELINSGROVE, SOMERSET, STATE COLLEGE, WAYNESBORO, AND YORK.

Heat Advisory issued September 2 at 3:53AM EDT until September 3 at 8:00PM EDT by NWS Mount Holly NJ

* WHAT...Heat index values up to 102 degrees expected. * WHERE...In Delaware, New Castle County. In New Jersey, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...From 11 AM to 8 PM EDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Heat Advisory issued September 2 at 3:53AM EDT until September 3 at 8:00PM EDT by NWS Mount Holly NJ

* WHAT...Heat index values up to 100 degrees expected. * WHERE...In New Jersey, Eastern Monmouth, Mercer, Western Monmouth, Ocean, and Southeastern Burlington Counties. In Pennsylvania, Berks, Eastern Chester, Western Chester, and Western Montgomery Counties. * WHEN...From 11 AM to 8 PM EDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Heat Advisory issued September 2 at 3:35AM EDT until September 3 at 8:00PM EDT by NWS State College PA

* WHAT...Heat index values up to 102 expected. * WHERE...South central Pennsylvania. * WHEN...From 11 AM to 8 PM EDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Heat Advisory issued September 2 at 2:54AM EDT until September 2 at 8:00PM EDT by NWS Pittsburgh PA

* WHAT...Heat index values up to 102 expected. * WHERE...In Ohio, Columbiana County. In Pennsylvania, Lawrence, Armstrong, and Butler Counties. * WHEN...From 8 AM this morning to 8 PM EDT this evening. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.

Heat Advisory issued September 2 at 2:54AM EDT until September 3 at 8:00PM EDT by NWS Pittsburgh PA

* WHAT...Heat index values up to 102 expected. * WHERE...Portions of east central Ohio, southwest and western Pennsylvania, and northern and the northern panhandle of West Virginia. * WHEN...From 8 AM this morning to 8 PM EDT Thursday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses.