weather.gov     
National Weather Service

Watches, Warnings & Advisories
NWS Homepage

Severe Thunderstorm Warning


Severe Weather Statement
National Weather Service Buffalo NY
302 PM EDT SUN JUL 23 2017

NYC003-231930-
/O.CON.KBUF.SV.W.0080.000000T0000Z-170723T1930Z/
Allegany NY-
302 PM EDT SUN JUL 23 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR SOUTHERN ALLEGANY COUNTY...

At 302 PM EDT, a severe thunderstorm was located near Wellsville,
moving east at 25 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect wind damage to trees and power lines.

Locations impacted include...
Wellsville, Whitesville, Scio, Andover, Belmont, Richburg, Stannards
and Paynesville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4210 7823 4227 7799 4223 7774 4200 7775
      4200 7784
TIME...MOT...LOC 1902Z 279DEG 22KT 4218 7792

HAIL...<.75IN
WIND...60MPH

$$

Wood


Severe Weather Statement


Severe Weather Statement
National Weather Service Buffalo NY
302 PM EDT SUN JUL 23 2017

NYC003-231930-
/O.CON.KBUF.SV.W.0080.000000T0000Z-170723T1930Z/
Allegany NY-
302 PM EDT SUN JUL 23 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 330 PM EDT
FOR SOUTHERN ALLEGANY COUNTY...

At 302 PM EDT, a severe thunderstorm was located near Wellsville,
moving east at 25 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect wind damage to trees and power lines.

Locations impacted include...
Wellsville, Whitesville, Scio, Andover, Belmont, Richburg, Stannards
and Paynesville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4210 7823 4227 7799 4223 7774 4200 7775
      4200 7784
TIME...MOT...LOC 1902Z 279DEG 22KT 4218 7792

HAIL...<.75IN
WIND...60MPH

$$

Wood


Flash Flood Watch


Flood Watch
National Weather Service State College PA
227 PM EDT Sun Jul 23 2017

PAZ028-041-042-046-049>053-056>059-063-065-066-240900-
/O.NEW.KCTP.FF.A.0008.170723T2100Z-170724T0900Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Juniata-Northern Lycoming-Sullivan-Southern Lycoming-Union-Snyder-
Montour-Northumberland-Columbia-Perry-Dauphin-Schuylkill-Lebanon-
Cumberland-York-Lancaster-
Including the cities of Mifflintown, Trout Run, Laporte,
Williamsport, Lewisburg, Selinsgrove, Danville, Sunbury,
Shamokin, Bloomsburg, Berwick, Newport, Harrisburg, Hershey,
Pottsville, Lebanon, Carlisle, York, and Lancaster
227 PM EDT Sun Jul 23 2017

...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...

The National Weather Service in State College has issued a

* Flash Flood Watch for a portion of central Pennsylvania,
  including the following areas, Columbia, Cumberland, Dauphin,
  Juniata, Lancaster, Lebanon, Montour, Northern Lycoming,
  Northumberland, Perry, Schuylkill, Snyder, Southern Lycoming,
  Sullivan, Union, and York.

* Through late tonight

* Additional heavy rainfall from thunderstorms is expected to
  develop this evening and last through the overnight hours. The
  rain may be heavy enough to cause flash flooding...particularly
  in areas which have seen heavy rain over the last day or two.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Review flood safety and preparedness information at
weather.gov/flood.

&&

$$

DeVoir


Special Weather Statement


Special Weather Statement
National Weather Service Mount Holly NJ
253 PM EDT SUN JUL 23 2017

MDZ008-PAZ101-102-231945-
Cecil-Western Chester-Eastern Chester-
253 PM EDT SUN JUL 23 2017

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN CECIL AND
SOUTHWESTERN CHESTER COUNTIES...

At 252 PM EDT, a strong thunderstorm was located near Delta, or 14
miles northwest of Havre De Grace, moving southeast at 10 mph.

Locations impacted include...
Calvert, North East, Rising Sun, Charlestown, Glen Roy, Zion,
Lombard, Richardsmere, Woodlawn, West Nottingham, Octoraro,
Conowingo, Rock Springs, Bay View, Farmington, Perryville and Port
Deposit.

These storms will contain gusty winds up to 45 mph, torrential
downpours and occasional cloud to ground lightning.

Locally heavy rainfall will lead to ponding of water on roadways and
poor visibility at times this afternoon. Poor drainage flooding
could also develop.

Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 3972 7614 3974 7612 3973 7610 3974 7610
      3977 7606 3975 7593 3958 7593 3955 7603
      3955 7608 3965 7616 3968 7621 3972 7623
TIME...MOT...LOC 1852Z 309DEG 10KT 3972 7626

$$

JRK

Special Weather Statement
National Weather Service State College PA
252 PM EDT SUN JUL 23 2017

PAZ006-037-231930-
Potter PA-Tioga PA-
252 PM EDT SUN JUL 23 2017

...A STRONG THUNDERSTORM WILL AFFECT PARTS OF POTTER AND TIOGA
COUNTIES UNTIL 330 PM EDT...

At 252 PM EDT, Doppler radar indicated a strong thunderstorm over
Galeton, moving southeast at 15 mph.

Pea size hail and winds in excess of 40 mph are possible.

Locations impacted include...
Wellsboro, Leetonia, Galeton, Leonard Harrison State Park and Gaines.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4166 7778 4184 7776 4185 7723 4156 7731
TIME...MOT...LOC 1852Z 274DEG 14KT 4175 7768

$$

Martin

Special Weather Statement
National Weather Service Buffalo NY
222 PM EDT SUN JUL 23 2017

NYZ020-021-231915-
Cattaraugus-Allegany-
222 PM EDT SUN JUL 23 2017

...A STRONG THUNDERSTORM WILL AFFECT EAST CENTRAL CATTARAUGUS AND
SOUTHERN ALLEGANY COUNTIES...

At 222 PM EDT, a strong thunderstorm was located near Cuba, or 14
miles northeast of Olean, moving east at 25 mph.

Winds in excess of 40 mph are possible with this storm.

Locations impacted include...
Wellsville, Alfred, Cuba, Whitesville, Hinsdale, Friendship, Scio,
Andover, Belmont and Angelica.

This includes Interstate 86 between exits 27 and 31.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 4218 7853 4235 7820 4225 7774 4200 7775
      4200 7783
TIME...MOT...LOC 1822Z 286DEG 21KT 4222 7821

$$

Wood


Hazardous Weather Outlook


Hazardous Weather Outlook
National Weather Service State College PA
224 PM EDT Sun Jul 23 2017

PAZ004>006-010>012-017>019-024>027-033>037-045-064-241830-
Warren-McKean-Potter-Elk-Cameron-Northern Clinton-Clearfield-
Northern Centre-Southern Centre-Cambria-Blair-Huntingdon-Mifflin-
Somerset-Bedford-Fulton-Franklin-Tioga-Southern Clinton-Adams-
224 PM EDT Sun Jul 23 2017

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...This Afternoon and Tonight.

Strong to severe thunderstorms with damaging winds 60 mph or greater
and large hail exceeding 1 inch in diameter are possible late this
afternoon and evening.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Strong thunderstorms with gusty winds and hail are possible Monday
afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

$$

Hazardous Weather Outlook
National Weather Service State College PA
224 PM EDT Sun Jul 23 2017

PAZ041-042-241830-
Northern Lycoming-Sullivan-
224 PM EDT Sun Jul 23 2017

...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...This Afternoon and Tonight.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Flash Flood Watch.

Strong to severe thunderstorms with damaging winds 60 mph or
greater and large hail exceeding 1 inch in diameter are possible
late this afternoon and evening.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Strong thunderstorms with gusty winds and hail are possible Monday
afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

$$

Hazardous Weather Outlook
National Weather Service State College PA
224 PM EDT Sun Jul 23 2017

PAZ028-046-049>053-056>059-063-065-066-241830-
Juniata-Southern Lycoming-Union-Snyder-Montour-Northumberland-
Columbia-Perry-Dauphin-Schuylkill-Lebanon-Cumberland-York-Lancaster-
224 PM EDT Sun Jul 23 2017

...FLASH FLOOD WATCH IN EFFECT THROUGH LATE TONIGHT...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...This Afternoon and Tonight.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Flash Flood Watch.

Strong to severe thunderstorms with damaging winds 60 mph or
greater, large hail and localized flooding are possible late this
afternoon and evening.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Strong thunderstorms with gusty winds and hail are possible Monday
afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

$$

Hazardous Weather Outlook
National Weather Service Buffalo NY
958 AM EDT Sun Jul 23 2017

NYZ004-005-010>014-019>021-085-241400-
Wayne-Northern Cayuga-Northern Erie-Genesee-Wyoming-Livingston-
Ontario-Chautauqua-Cattaraugus-Allegany-Southern Erie-
958 AM EDT Sun Jul 23 2017

This Hazardous Weather Outlook is for portions of western and north
central New York.

.DAY ONE...Today and Tonight.

Showers and thunderstorms could produce locally heavy rainfall...
strong gusty winds...and hail this afternoon and evening. An
isolated tornado also cannot be totally ruled out at this time.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Some additional scattered thunderstorms will be possible on
Monday...a few of which could produce some gusty winds and
small hail.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

This product, along with other watches, warnings, advisories, and
statements issued by the National Weather Service office in Buffalo
can be found on the internet at http://www.weather.gov/buf

$$

Hazardous Weather Outlook
National Weather Service Mount Holly NJ
514 AM EDT Sun Jul 23 2017

DEZ001-MDZ008-012-015-019-020-NJZ001-007>010-015>019-PAZ054-055-
060>062-070-071-101>106-240915-
New Castle-Cecil-Kent MD-Queen Annes-Talbot-Caroline-Sussex-Warren-
Morris-Hunterdon-Somerset-Mercer-Salem-Gloucester-Camden-
Northwestern Burlington-Carbon-Monroe-Berks-Lehigh-Northampton-
Delaware-Philadelphia-Western Chester-Eastern Chester-
Western Montgomery-Eastern Montgomery-Upper Bucks-Lower Bucks-
514 AM EDT Sun Jul 23 2017

This Hazardous Weather Outlook is for northern Delaware, northeast
Maryland, central New Jersey, northern New Jersey, northwest New
Jersey, southern New Jersey, east central Pennsylvania, northeast
Pennsylvania and southeast Pennsylvania.

.DAY ONE...Today and Tonight.

Thunderstorms may produce damaging winds and/or poor drainage
flooding, especially along and south of Interstate 78 and most
likely late today or tonight.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

There is a chance for a severe thunderstorm Monday, along with heavy
rain and possible localized flooding.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed today and Monday.

$$

Hazardous Weather Outlook
National Weather Service Baltimore MD/Washington DC
511 AM EDT Sun Jul 23 2017

MDZ003>006-501>507-VAZ025>031-036>040-050-051-501>508-WVZ050>053-
055-501>506-240915-
Washington-Frederick MD-Carroll-Northern Baltimore-
Extreme Western Allegany-Central and Eastern Allegany-
Northwest Montgomery-Central and Southeast Montgomery-
Northwest Howard-Central and Southeast Howard-Northwest Harford-
Augusta-Rockingham-Shenandoah-Frederick VA-Page-Warren-Clarke-
Nelson-Albemarle-Greene-Madison-Rappahannock-Orange-Culpeper-
Northern Fauquier-Southern Fauquier-Western Highland-
Eastern Highland-Western Loudoun-Eastern Loudoun-
Northern Virginia Blue Ridge-Central Virginia Blue Ridge-
Hampshire-Morgan-Berkeley-Jefferson-Hardy-Western Grant-
Eastern Grant-Western Mineral-Eastern Mineral-Western Pendleton-
Eastern Pendleton-
511 AM EDT Sun Jul 23 2017

This Hazardous Weather Outlook is for eastern West Virginia,
northern and central Virginia, and central and western Maryland
with the exception of Garrett County.

.DAY ONE...Today and Tonight

Isolated severe thunderstorms with damaging winds and hail are
possible today.

There will be the potential for heavy rainfall which could cause
localized flooding.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will be possible today. Please forward any
thunderstorm damage or heavy rain reports to the National Weather
Service.

$$

Hazardous Weather Outlook
National Weather Service Cleveland OH
453 AM EDT Sun Jul 23 2017

LEZ061-142>149-162>169-OHZ003-006>014-017>023-027>033-036>038-047-
089-PAZ001>003-240900-
Lake Erie open waters from Ripley to Buffalo NY-
Lake Erie nearshore waters from Maumee Bay to Reno Beach OH-
Lake Erie nearshore waters from Reno Beach to The Islands OH-
Lake Erie nearshore waters from The Islands to Vermilion OH-
Lake Erie nearshore waters from Vermilion to Avon Point OH-
Lake Erie nearshore waters from Avon Point to Willowick OH-
Lake Erie nearshore waters from Willowick to Geneva-on-the Lake OH-
Lake Erie nearshore waters from Geneva-on-the-Lake to Conneaut OH-
Lake Erie nearshore waters from Conneaut OH to Ripley NY-
Lake Erie open waters from Maumee Bay to Reno Beach OH-
Lake Erie open waters from Reno Beach to The Islands OH-
Lake Erie open waters from The Islands to Vermilion OH-
Lake Erie open waters from Vermilion to Avon Point OH-
Lake Erie open waters from Avon Point to Willowick OH-
Lake Erie open waters from Willowick to Geneva-on-the-Lake OH-
Lake Erie open waters from Geneva-on-the-Lake to Conneaut OH-
Lake Erie open waters from Conneaut OH to Ripley NY-Lucas-Wood-
Ottawa-Sandusky-Erie-Lorain-Cuyahoga-Lake-Geauga-Ashtabula Inland-
Hancock-Seneca-Huron-Medina-Summit-Portage-Trumbull-Wyandot-Crawford-
Richland-Ashland-Wayne-Stark-Mahoning-Marion-Morrow-Holmes-Knox-
Ashtabula Lakeshore-Northern Erie-Southern Erie-
453 AM EDT Sun Jul 23 2017

This Hazardous Weather Outlook is for Lake Erie, north central
Ohio, northeast Ohio, northwest Ohio and northwest Pennsylvania.

.DAY ONE...Today and Tonight.

Thunderstorms that develop this afternoon and evening have to
potential to be locally strong to severe. Damaging wind gusts would
be the primary threat.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

$$

Hazardous Weather Outlook
National Weather Service Pittsburgh PA
415 AM EDT Sun Jul 23 2017

MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023-
029-031-073>076-WVZ001>004-012-021-509>514-240815-
Garrett-Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson-
Muskingum-Guernsey-Belmont-Noble-Monroe-Mercer-Venango-Forest-
Lawrence-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-
415 AM EDT Sun Jul 23 2017

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.

.DAY ONE...Today and Tonight.

Slight risk for severe thunderstorms this afternoon and evening. The
main threat will be damaging wind gusts.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
 conditions according to Standard Operating Procedures.

$$

Hazardous Weather Outlook
National Weather Service Binghamton NY
413 AM EDT Sun Jul 23 2017

NYZ009-015>018-022>025-036-037-044>046-055>057-062-PAZ038>040-043-
044-047-048-072-240815-
Northern Oneida-Yates-Seneca-Southern Cayuga-Onondaga-Steuben-
Schuyler-Chemung-Tompkins-Madison-Southern Oneida-Cortland-Chenango-
Otsego-Tioga-Broome-Delaware-Sullivan-Bradford-Susquehanna-
Northern Wayne-Wyoming-Lackawanna-Luzerne-Pike-Southern Wayne-
413 AM EDT Sun Jul 23 2017

This Hazardous Weather Outlook is for central New York and
northeast Pennsylvania.

.DAY ONE...Today and Tonight.

...Isolated Severe Thunderstorms and Flash Flooding possible...

Showers and thunderstorms will become likely by late afternoon,
lasting into tonight. Locally heavy rainfall will be the primary
threat from this activity, with isolated flash flooding possible,
especially in Northeast Pennsylvania to the Southern Tier of New
York. However, strong gusty winds may also occur in a few storms.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

Additional storms are expected in the area Monday, with locally heavy
rainfall and gusty winds again possible in some spots.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report any impacts from thunderstorms
late today through tonight, such as high rainfall amounts, flooding,
or wind damage.

$$


Short Term Forecast


Short Term Forecast
National Weather Service Baltimore MD/Washington DC
259 PM EDT SUN JUL 23 2017

MDZ507-508-231945-
Southeast Harford-Northwest Harford-
259 PM EDT SUN JUL 23 2017

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN HARFORD COUNTY...

At 259 PM EDT, a strong thunderstorm was located near Conowingo, or
11 miles northwest of Havre De Grace, moving southeast at 10 mph.

Gusts of 40 to 50 mph and half inch hail are possible with this
storm.

Locations impacted include...
Havre De Grace, Darlington, Cardiff, Scarboro and Whiteford.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 3969 7622 3965 7616 3962 7615 3959 7611
      3955 7608 3953 7610 3960 7630 3971 7637
      3972 7635 3972 7623
TIME...MOT...LOC 1859Z 309DEG 10KT 3967 7625

$$

ADS

Short Term Forecast
National Weather Service Mount Holly NJ
151 PM EDT Sun Jul 23 2017

DEZ001-MDZ008-012-NJZ016>018-021>024-PAZ060-070-101-102-232000-
New Castle-Cecil-Kent MD-Salem-Gloucester-Camden-Cumberland-
Atlantic-Cape May-Atlantic Coastal Cape May-Berks-Delaware-
Western Chester-Eastern Chester-
Including the cities of Wilmington, Elkton, Chestertown,
Pennsville, Glassboro, Camden, Cherry Hill, Millville, Hammonton,
Cape May Court House, Ocean City, Reading, Media, Honey Brook,
Oxford, West Chester, and Kennett Square
151 PM EDT Sun Jul 23 2017

.NOW...

At 145 PM..Isolated showers were located over southeastern
Pennsylvania, southern New Jersey, northeastern Maryland and
northern Delaware. The showers will continue to increase in
coverage and intensity during the mid afternoon. An isolated
thunderstorm may also develop after 2 PM.

Brief heavy downpours are possible with this activity.

$$

U.S. Dept. of Commerce
NOAA National Weather Service
1325 East West Highway
Silver Spring, MD 20910
E-mail: w-nws.webmaster@noaa.gov
Page last modified: June 2, 2009
NATIONAL WEATHER SERVICE: for Safety, for Work, for Fun - FOR LIFE