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Ed Sweeney @EasternChaser

Penn State Certification in Weather Forecasting, @VillanovaU Alum, NWA, AMS Assoc, E PA Skywarn Deputy Coordinator, Storm Chasing, Photography; Opinions=My Own

Joined June 2013
  • Tweets 17,643
  • Following 4,101
  • Followers 3,394
5,399 Photos and videos
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Ed Sweeney
@EasternChaser
1 Aug 2015
New artwork for sale! - "Tornado and the Rainbow II " - fineartamerica.com/featured/… @fineartamerica
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Not going to be able to chase for any distance today due to a prior commitment, but this would be a prime central Delmarva Peninsula day if I was.
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Probably should have said “night”.
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Friendly reminder that model radar reflectivity is a tool, not necessarily an answer key (general comment not directed anywhere in particular).
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Brief preview video of a tornadic supercell thunderstorm near Greenwood, NE on 5/17/26 (link to the full YouTube video will be in the replies below). This supercell produced an EF-1 tornado just north of this location near the time of this video: #newx #stormhour #weather
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Link to full YouTube video of the tornadic supercell near Greenwood, NE on 5/17/26: youtu.be/ng968QoKQWU?is=LXix… #newx #stormhour #weather
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Be careful if driving on the Chesapeake Bay Bridge as the severe warned thunderstorm has some strong winds showing on TBWI only a few hundred feet above ground level: #mdwx #dcwx
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Pretty much summarizes the severe weather season so far:
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For further clarification:
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Ed Sweeney retweeted
NWS Severe Tstorm
@NWSSevereTstorm
Jun 12
Severe Thunderstorm Warning continues for Chicago IL, Cicero IL and Orland Park IL until 9:00 PM CDT. This destructive storm will contain wind gusts to 80 MPH!
This graphic displays a severe thunderstorm warning plotted on a map. The warning is in effect until 9:00 PM CDT. The warning includes Chicago IL, Cicero IL and Orland Park IL. This warning is for Southeastern Lake County Is Cancelled. The threats associated with this warning are wind gusts up to 80 MPH and pea sized hail. There are 2,819,430 people in the warning along with 808 schools and 44 hospitals.

ALT This graphic displays a severe thunderstorm warning plotted on a map. The warning is in effect until 9:00 PM CDT. The warning includes Chicago IL, Cicero IL and Orland Park IL. This warning is for Southeastern Lake County Is Cancelled. The threats associated with this warning are wind gusts up to 80 MPH and pea sized hail. There are 2,819,430 people in the warning along with 808 schools and 44 hospitals.

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Ed Sweeney retweeted
Isaac Krauss@IsaacKrauss_Wx
Jun 11
Twins
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Ed Sweeney retweeted
NWS Mount Holly
@NWS_MountHolly
Jun 11
A severe thunderstorm watch has been issued for parts of Delaware, Maryland, New Jersey, New York, Pennsylvania and Virginia until 12 AM EDT
This graphic displays Severe Thunderstorm watch number 317 plotted on a map. The watch is in effect until 12:00 AM EDT. The watch includes parts of Delaware, Maryland, New Jersey, New York, Pennsylvania and Virginia. The threats associated with this watch are no tornadoes expected, isolated hail up to quarter size possible and scattered gusts up to 65 mph possible. There are 27,572,039 people in the watch along with 6473 schools and 372 hospitals.

ALT This graphic displays Severe Thunderstorm watch number 317 plotted on a map. The watch is in effect until 12:00 AM EDT. The watch includes parts of Delaware, Maryland, New Jersey, New York, Pennsylvania and Virginia. The threats associated with this watch are no tornadoes expected, isolated hail up to quarter size possible and scattered gusts up to 65 mph possible. There are 27,572,039 people in the watch along with 6473 schools and 372 hospitals.

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Developing shelf cloud produced by thunderstorms apporaching Valley Forge National Park in Valley Forge, PA at 5:36 pm EDT. #pawx #stormhour
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METAR from KSLN (Salina, KS) indicating that the ASOS recorded a peak wind gust of 98 knots (113 mph) produced by severe thunderstorms. #kswx
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I’m a proponent of PDS language, but I thought blizzard warnings were in themselves de facto PDS warnings?
Pez
@PezexWx
Jun 8
The National Weather Service will implement "Particularly Dangerous Situation" wording in Blizzard Warnings and Ice Storm Warnings beginning October 1, 2026. #wxtwitter
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Could see the leading edge of the cold pool undercutting the line in Broomall, PA.
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Ed Sweeney retweeted
NWS Mount Holly
@NWS_MountHolly
Jun 6
A severe thunderstorm watch has been issued for parts of Connecticut, Delaware, New Jersey, New York and Pennsylvania until 10 PM EDT
This graphic displays Severe Thunderstorm watch number 281 plotted on a map. The watch is in effect until 10:00 PM EDT. The watch includes parts of Connecticut, Delaware, New Jersey, New York and Pennsylvania. The threats associated with this watch are no tornadoes expected, isolated hail up to quarter size possible and scattered gusts up to 75 mph likely. There are 30,769,450 people in the watch along with 7246 schools and 391 hospitals.

ALT This graphic displays Severe Thunderstorm watch number 281 plotted on a map. The watch is in effect until 10:00 PM EDT. The watch includes parts of Connecticut, Delaware, New Jersey, New York and Pennsylvania. The threats associated with this watch are no tornadoes expected, isolated hail up to quarter size possible and scattered gusts up to 75 mph likely. There are 30,769,450 people in the watch along with 7246 schools and 391 hospitals.

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SPC mesoanalysis suggesting DCAPE values between 900-1100 j/kg across much of the Greater Philadelphia area at 21Z (5:00 pm EDT). Keep an eye out for a damaging wind threat across the area. #pawx #njwx #dewx
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This is a heck of a stat given how many significant precipitation events we have witnessed over the past 10-15 years :
NWS Mount Holly
@NWS_MountHolly
Jun 2
It has been 800 days since Philadelphia experienced 2" or greater rainfall on a single calendar day (March 23, 2024). Typically, this occurs about 2 days per year on average. #PAwx
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Ed Sweeney retweeted
NWS State College
@NWSStateCollege
May 31
May 31st: One of the most infamous & deadliest days in PA weather history: •1889 Johnstown Flood: Triggered by torrential, unrelenting rainfall, this deluge left 2,209 people dead @JohnstownFldNPS •1985 Tornado Outbreak: Deadliest outbreak resulting in 65 deaths & PA's only F5
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Panorama of a shelf cloud produced by thunderstorm(s) with transient supercellular characteristics near Quanah, TX last night. #txwx #weather #stormhour
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