High chance (80%) of development for Invest #94L. It’s already producing TS force winds. Could become TD or TS at anytime. Early morning satellite images on this Tuesday indicate that the cloud pattern associated with the low pressure system located over the far eastern tropical Atlantic Ocean about 800 miles west-southwest of the Cabo Verde Islands has not changed very much in organization. Environmental conditions, however, are favorable for a tropical depression or a tropical storm to form within the next 24 hours or so while the low moves westward or west-northwestward at 10 to 15 mph across the tropical Atlantic. For more information, follow Pennsylvania Weather Authority and Hurricane Tracker

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High chance (80%) of development for Invest #94L. It’s already producing TS force winds. Could become TD or TS at anytime. Early morning satellite images on this Tuesday indicate that the cloud pattern associated with the low pressure system located over the far eastern tropical Atlantic Ocean about 800 miles west-southwest of the Cabo Verde Islands has not changed very much in organization. Environmental conditions, however, are favorable for a tropical depression or a tropical storm to form within the next 24 hours or so while the low moves westward or west-northwestward at 10 to 15 mph across the tropical Atlantic. For more information, follow Pennsylvania Weather Authority and Hurricane Tracker

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Tropical Storm Cindy left thousands without power, and heavy rain caused major flooding along the Gulf coast last month. As thousands are still drying out and cleaning up after Cindy pushed her way into the northeast, another potential storm is being monitored. The National Hurricane Center continues to monitor a broad area of low pressure that has remained nearly stationary over the far eastern tropical Atlantic Ocean about 650 miles west-southwest of the Cabo Verde Islands. Shower and thunderstorms are still disorganized, environmental conditions are expected to become more conducive for some development of this system later this week while the disturbance moves westward at 5 to 10 mph. This storm has

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Tropical Storm Cindy left thousands without power, and heavy rain caused major flooding along the Gulf coast last month. As thousands are still drying out and cleaning up after Cindy pushed her way into the northeast, another potential storm is being monitored. The National Hurricane Center continues to monitor a broad area of low pressure that has remained nearly stationary over the far eastern tropical Atlantic Ocean about 650 miles west-southwest of the Cabo Verde Islands. Shower and thunderstorms are still disorganized, environmental conditions are expected to become more conducive for some development of this system later this week while the disturbance moves westward at 5 to 10 mph. This storm has

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General non-severe storms are likely to stretch across much of the state today, the percentage of severity is less than five. This means that damaging wind, hail, and isolated tornadoes are NOT likely to occur. This will give a break for those who dealt with damaging storms on Saturday. Gusty winds are likely because of a strong convection across the central Gulf States, but extensive damage from these are not likely. A layer cooling will stretch across the Mid-Atlantic region for much of Sunday through Monday. A general risk will remain for the northern section of the state for Monday, however, the severity of some cells will still not go above

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General non-severe storms are likely to stretch across much of the state today, the percentage of severity is less than five. This means that damaging wind, hail, and isolated tornadoes are NOT likely to occur. This will give a break for those who dealt with damaging storms on Saturday. Gusty winds are likely because of a strong convection across the central Gulf States, but extensive damage from these are not likely. A layer cooling will stretch across the Mid-Atlantic region for much of Sunday through Monday. A general risk will remain for the northern section of the state for Monday, however, the severity of some cells will still not go above

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BANDS OF SHOWERS AND THUNDERSTORMS WILL TAPER OFF FROM WEST TO EAST ACROSS THE WESTERN PORTION OF CENTRAL PENNSYLVANIA BY LATE AFTERNOON. SOME STORMS WILL HAVE VERY HEAVY DOWNPOURS AND GUSTY WINDS. THE SHOWERS ARE MOVING NORTHEAST AT 25 MPH. Locations impacted: BEDFORD-BLAIR-CAMBRIA-CAMERON-CLEARFIELD-ELK-FULTON-HUNTINGDON- MCKEAN-MIFFLIN-NORTHERN CENTRE-NORTHERN CLINTON-POTTER-SOMERSET-SOUTHERN CENTRE-SOUTHERN CLINTON-WARREN- INCLUDING THE CITIES OF…ALTOONA…JOHNSTOWN…STATE COLLEGE. ADAMS-COLUMBIA-CUMBERLAND-DAUPHIN-FRANKLIN-JUNIATA-LANCASTER-LEBANON- MONTOUR-NORTHERN LYCOMING-NORTHUMBERLAND-PERRY-SCHUYLKILL-SNYDER- SOUTHERN LYCOMING-SULLIVAN-TIOGA-UNION-YORK-INCLUDING THE CITIES OF…HARRISBURG…LANCASTER…WILLIAMSPORT…YORK.

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BANDS OF SHOWERS AND THUNDERSTORMS WILL TAPER OFF FROM WEST TO EAST ACROSS THE WESTERN PORTION OF CENTRAL PENNSYLVANIA BY LATE AFTERNOON. SOME STORMS WILL HAVE VERY HEAVY DOWNPOURS AND GUSTY WINDS. THE SHOWERS ARE MOVING NORTHEAST AT 25 MPH. Locations impacted: BEDFORD-BLAIR-CAMBRIA-CAMERON-CLEARFIELD-ELK-FULTON-HUNTINGDON- MCKEAN-MIFFLIN-NORTHERN CENTRE-NORTHERN CLINTON-POTTER-SOMERSET-SOUTHERN CENTRE-SOUTHERN CLINTON-WARREN- INCLUDING THE CITIES OF…ALTOONA…JOHNSTOWN…STATE COLLEGE. ADAMS-COLUMBIA-CUMBERLAND-DAUPHIN-FRANKLIN-JUNIATA-LANCASTER-LEBANON- MONTOUR-NORTHERN LYCOMING-NORTHUMBERLAND-PERRY-SCHUYLKILL-SNYDER- SOUTHERN LYCOMING-SULLIVAN-TIOGA-UNION-YORK-INCLUDING THE CITIES OF…HARRISBURG…LANCASTER…WILLIAMSPORT…YORK.

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SEVERE THUNDERSTORM WATCH 389 IS IN EFFECT UNTIL 900 PM EDT FOR THE FOLLOWING LOCATIONS: PENNSYLVANIA COUNTIES INCLUDED ARE ADAMS BERKS BUCKS CARBON CHESTER COLUMBIA CUMBERLAND DAUPHIN DELAWARE FRANKLIN JUNIATA LANCASTER LEBANON LEHIGH LYCOMING MONROE MONTGOMERY MONTOUR NORTHAMPTON NORTHUMBERLAND PERRY PHILADELPHIA SCHUYLKILL SNYDER SULLIVAN UNION YORK BRADFORD LACKAWANNA LUZERNE PIKE SUSQUEHANNA WAYNE WYOMING

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SEVERE THUNDERSTORM WATCH 389 IS IN EFFECT UNTIL 900 PM EDT FOR THE FOLLOWING LOCATIONS: PENNSYLVANIA COUNTIES INCLUDED ARE ADAMS BERKS BUCKS CARBON CHESTER COLUMBIA CUMBERLAND DAUPHIN DELAWARE FRANKLIN JUNIATA LANCASTER LEBANON LEHIGH LYCOMING MONROE MONTGOMERY MONTOUR NORTHAMPTON NORTHUMBERLAND PERRY PHILADELPHIA SCHUYLKILL SNYDER SULLIVAN UNION YORK BRADFORD LACKAWANNA LUZERNE PIKE SUSQUEHANNA WAYNE WYOMING

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This Hazardous Weather Outlook is for western Maryland, east central Ohio, northwest Pennsylvania, southwest Pennsylvania, west central Pennsylvania, western Pennsylvania, northern West Virginia and northern panhandle of West Virginia. Locations impacted: Garrett-Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson- Muskingum-Guernsey-Belmont-Noble-Monroe-Forest-Butler-Clarion-Beaver- Allegheny-Armstrong-Indiana-Washington-Greene-Westmoreland- Westmoreland Ridges-Fayette-Fayette Ridges-Hancock-Brooke-Ohio- Marshall-Wetzel-Marion-Monongalia-Ridges of Eastern Monongalia and Northwestern Preston-Preston-Eastern Preston-Western Tucker-Eastern Tucker. Isolated severe thunderstorms are possible Saturday. SPOTTER INFORMATION STATEMENT… Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures.

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This Hazardous Weather Outlook is for western Maryland, east central Ohio, northwest Pennsylvania, southwest Pennsylvania, west central Pennsylvania, western Pennsylvania, northern West Virginia and northern panhandle of West Virginia. Locations impacted: Garrett-Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson- Muskingum-Guernsey-Belmont-Noble-Monroe-Forest-Butler-Clarion-Beaver- Allegheny-Armstrong-Indiana-Washington-Greene-Westmoreland- Westmoreland Ridges-Fayette-Fayette Ridges-Hancock-Brooke-Ohio- Marshall-Wetzel-Marion-Monongalia-Ridges of Eastern Monongalia and Northwestern Preston-Preston-Eastern Preston-Western Tucker-Eastern Tucker. Isolated severe thunderstorms are possible Saturday. SPOTTER INFORMATION STATEMENT… Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures.

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Strong, severe storms to start your weekend. Taken from the Storm Prediction Center: Differential heating along residual outflow will probably contribute to storm development during the midday-mid afternoon period within this general corridor. Surface dewpoints in the 60s degrees F will yield 500-1500 J/kg MLCAPE. Several convectively generated mid-level vorticity maxima may focus clusters of stronger storms. Moderate west-southwesterly 500-mb flow ranging from 25-45 kt will conditionally support storm organization, mainly in the form of multicells. Wind gusts 45-60 mph with the stronger downdrafts will probably result in pockets of localized wind damage. Convective outflow and the loss of diurnal heating will lessen the severe risk during the evening. Scattered severe thunderstorms are possible from Oklahoma northeast into the lower

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Strong, severe storms to start your weekend. Taken from the Storm Prediction Center: Differential heating along residual outflow will probably contribute to storm development during the midday-mid afternoon period within this general corridor. Surface dewpoints in the 60s degrees F will yield 500-1500 J/kg MLCAPE. Several convectively generated mid-level vorticity maxima may focus clusters of stronger storms. Moderate west-southwesterly 500-mb flow ranging from 25-45 kt will conditionally support storm organization, mainly in the form of multicells. Wind gusts 45-60 mph with the stronger downdrafts will probably result in pockets of localized wind damage. Convective outflow and the loss of diurnal heating will lessen the severe risk during the evening. Scattered severe thunderstorms are possible from Oklahoma northeast into the lower

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Five million people lost power from Chicago to the mid-Atlantic June 29-30,and 22 people were killed, and while it wasn’t the most intense or long lived events ever observed, it was noteworthy of producing the all-time highest recorded June or July wind gusts along its path. The storm also was notable for being arguably the first derecho to capture widespread media attention, striking as it did nearly every metropolitan area in a broadening path that extended from Chicago and Indianapolis to Baltimore, Washington, and Tidewater Virginia. Taken from the NWS of Pittsburgh: Composite display of hourly radar reflectivity imagery, showing development and evolution of the June 29, 2012 derecho-producing convective system, with

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Five million people lost power from Chicago to the mid-Atlantic June 29-30,and 22 people were killed, and while it wasn’t the most intense or long lived events ever observed, it was noteworthy of producing the all-time highest recorded June or July wind gusts along its path. The storm also was notable for being arguably the first derecho to capture widespread media attention, striking as it did nearly every metropolitan area in a broadening path that extended from Chicago and Indianapolis to Baltimore, Washington, and Tidewater Virginia. Taken from the NWS of Pittsburgh: Composite display of hourly radar reflectivity imagery, showing development and evolution of the June 29, 2012 derecho-producing convective system, with

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It is going to be a stormy day on Thursday, as a low pressure system makes its way across the Northeast. At least isolated strong to severe storms are expected by afternoon along the front from IL into OH in an elongating plume of instability supported by strong west-southwest flow. Winds aloft look to be parallel to the boundary, which should keep activity within a narrow west-east zone. Strong 850 mb flow, especially into NY and PA, suggest strong wind gusts will be the main threat as instability will be weakest there. Potentially, a supercell could occur as SRH will be maximized along the eastward-moving warm front into NY. Storms may

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It is going to be a stormy day on Thursday, as a low pressure system makes its way across the Northeast. At least isolated strong to severe storms are expected by afternoon along the front from IL into OH in an elongating plume of instability supported by strong west-southwest flow. Winds aloft look to be parallel to the boundary, which should keep activity within a narrow west-east zone. Strong 850 mb flow, especially into NY and PA, suggest strong wind gusts will be the main threat as instability will be weakest there. Potentially, a supercell could occur as SRH will be maximized along the eastward-moving warm front into NY. Storms may

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There is the potential for storms to become severe at the local level from parts of the lower Great Lakes to the Ohio and middle Mississippi valleys. Frequent lightning strikes, flash flooding and high winds would be the greatest risks to those outside or on the road. The forward speed of this storm system is questionable, but could be detrimental to outdoor activities from the middle of the nation to the mid-Atlantic states and New England. A fast-moving storm may allow clearing in the Midwest but a ruined holiday in the Northeast. Much of the mid-Atlantic has been enjoying cooler temperatures and relatively low humidity. But, that will change towards the

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There is the potential for storms to become severe at the local level from parts of the lower Great Lakes to the Ohio and middle Mississippi valleys. Frequent lightning strikes, flash flooding and high winds would be the greatest risks to those outside or on the road. The forward speed of this storm system is questionable, but could be detrimental to outdoor activities from the middle of the nation to the mid-Atlantic states and New England. A fast-moving storm may allow clearing in the Midwest but a ruined holiday in the Northeast. Much of the mid-Atlantic has been enjoying cooler temperatures and relatively low humidity. But, that will change towards the

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