Central PA Summer 2025

[Jns2183]

Absolutely no wind but sky is still constantly lit up, rolling thunder and a close cg bomb every 5 minutes still after 70 mins. Picked up nearly 3" of rain last hour. Storms don't look like they are moving much as Erick remnants keep throwing moisture in. Dry air is off to northwest and losing. This storm has ruined me for life I'm afraid.

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[mahantango#1]

 

Extreme Heat Watch

---

URGENT - WEATHER MESSAGE
National Weather Service State College PA
342 AM EDT Fri Jun 20 2025

PAZ019-026>028-035-036-045-046-049>053-056>059-063>066-210330-
/O.NEW.KCTP.XH.A.0001.250622T1500Z-250626T0000Z/
Southern Centre-Huntingdon-Mifflin-Juniata-Fulton-Franklin-
Southern Clinton-Southern Lycoming-Union-Snyder-Montour-
Northumberland-Columbia-Perry-Dauphin-Schuylkill-Lebanon-
Cumberland-Adams-York-Lancaster-
Including the cities of State College, Lewisburg, Mifflintown,
Lebanon, Bloomsburg, Hershey, Lewistown, Selinsgrove, Sunbury,
Pottsville, Shamokin, Chambersburg, Lancaster, Lock Haven,
McConnellsburg, York, Mount Union, Williamsport, Harrisburg,
Gettysburg, Huntingdon, Berwick, Danville, Carlisle, and Newport
342 AM EDT Fri Jun 20 2025

...EXTREME HEAT WATCH IN EFFECT FROM SUNDAY MORNING THROUGH
WEDNESDAY EVENING...

* WHAT...Dangerously hot conditions with heat index values over 105
  possible.

* WHERE...A portion of central Pennsylvania east of I-99 and south
  of I-80.

* WHEN...From Sunday morning through Wednesday evening.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events.

* ADDITIONAL DETAILS...Heat index values and the associated risk of
  heat-related impacts will be highest on Monday and Tuesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Check up on relatives and neighbors, and provide pets with adequate
water and shelter from the sun.

Wear lightweight and loose fitting clothing.

In addition to the daytime heat, overnight low temperatures will
also be very warm and oppressively muggy.

&&

$$

For more information from the National Weather Service visit
weather.gov/StateCollege

Banghoff/Bauco

[mahantango#1]

Wxrisk.com

oprenodSst99mlf0c4c6immti3c8a35415h9uh9c6llaglah091ili81c643  · 

 

 

EXTREMELY IMPORTANT and CRITICAL WEATHER INFORMATION

What I am about to tell you is really important Weather information so please read -- this applies to Not just you and or your family and friends but also for businesses and organizations.

FIRST if you are in the air conditioning business-- prepare for a monster workload for the next 7 or 8 days at least. WxRisk has been talking about this extreme Heatwave coming up for since JUNE 13 so I am hoping that if you are in the air conditioning business or HVAC you have had enough wisdom and wherewithal to understand what is coming.

SECOND if you are a homeowner and you have not updated or done your normal summer maintenance on your air conditioning system because April and May were so cool and wet you need to get this done ASAP. See if you can get that appointment no matter what time of day or night. .

If your system is rickety and you don't know if it's going to make it get to the stores and buy big fans before they all get bought out

THIRD if you are in management and you manage apartment buildings Townhomes schools senior centers or what have you …again get your air conditioning systems checked out as soon as possible and make sure everything is working good while you still have a few days.

Take a look at the NEW WXRISK weather video. This heat in the Middle Atlantic region from New York City down to Virginia North Carolina border and then into Georgia…. is going to last for at least 7 days maybe 8.

This is significantly longer than what the data was showing earlier in the week which was just a three or four day long heat wave.

The good news is that the heat looks like it's going to break on July 1st with a very strong cold front sweeping across the Central and Eastern US . The pattern behind the Heatwave looks spectacular -- at this time the July 4th weekend looks really great. Of course it is too early to know that for a certain yet but right now the indications look really promising for everybody east of the Mississippi River July 2nd through July 3-7.

[Summit Snow]

9 hours ago, Voyager said:

So my grand total for today's stormy environment?

0.00"

Not one drop. The pre frontal stuff hit south of Quakertown. Round one hit south of Allentown. This last round missed to the north, getting the Scranton area.

Yeah. I thought we missed and then got .75 with the storms to the north of you.

 

[Voyager]

26 minutes ago, Summit Snow said:

Yeah. I thought we missed and then got .75 with the storms to the north of you.

 

Yeah, it looked like you got a solid up that way. As for me, I got a solid too, except mine was a solid pile of excrement...lol

[Itstrainingtime]

Beautiful morning out there! Humidity is noticeably lower...going to enjoy time outside later before the motherload of heat arrives. 

[Jns2183]

Hopefully I bring back some thunderstorm luck with me because I certainly am bringing back the heat. Finished last night with 8.5" of rain in 5 hous

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[Storm Clouds]

My AC went out last night lol go figure. At least it was cool enough to open windows last night and hopefully again tonight. I have a guy scheduled to come tomorrow morning at 9. Just in time before we settle into Hell! 

[Mount Joy Snowman]

Low of 60 with .78” of rain. Gorgeous day out there. 

[Mount Joy Snowman]

Took some cool pics on the river yesterday while we were dodging storms. Fun stuff. 

[Jns2183]

Took some cool pics on the river yesterday while we were dodging storms. Fun stuff. 

Nice shelf cloud

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[Itstrainingtime]

2 hours ago, Mount Joy Snowman said:

Took some cool pics on the river yesterday while we were dodging storms. Fun stuff. 

Ain't no way I'd be out on the water with a storm that imminent. But great pictures nonetheless! 

[canderson]

I thought toys would be worse but it’s quite nice out. 77 at 12:45 with a 10 mile breeze that is refreshing. 

[Mount Joy Snowman]

2 hours ago, Itstrainingtime said:

Ain't no way I'd be out on the water with a storm that imminent. But great pictures nonetheless! 

Haha tell me about it. Normally we wouldn’t go out on a day like that but we had some friends in town from Alaska who really wanted to go on the boat. What’s nice about that long stretch of river is if you have RadarScope and a weather nerd on board you can pretty easily outrun any storms. But generally speaking, we wouldn’t typically be messing around in such conditions. 

[canderson]

Happy longest day of the year. I wish the warmth followed that pattern and not the 2-3 month delay! 

[Blizzard of 93]

8 hours ago, Itstrainingtime said:

Beautiful morning out there! Humidity is noticeably lower...going to enjoy time outside later before the motherload of heat arrives. 

Exactly, I got the mowing & yard work done this morning. It was nice to have some sun with manageable dew points.

My Family vacation to Cape May begins on Sunday. Hopefully it’s a few degrees cooler on the immediate coast with a sea breeze!

[Yardstickgozinya]

I hope disturbance droppingin out of the nw dies  ?   Not today please.  

[Yardstickgozinya]

Even though there's really no storms in the forecast I noticed Spc keeps us in the convective outlook the next three days. 

[Itstrainingtime]

4 hours ago, Blizzard of 93 said:

Exactly, I got the mowing & yard work done this morning. It was nice to have some sun with manageable dew points.

My Family vacation to Cape May begins on Sunday. Hopefully it’s a few degrees cooler on the immediate coast with a sea breeze!

I'm seeing mid 80s right along the coastline.

[Yardstickgozinya]

15 hours ago, Itstrainingtime said:

Ain't no way I'd be out on the water with a storm that imminent. But great pictures nonetheless! 

I changed my original reply because after I thought about it I realized that It came off as being very belittling to Mount Joy Snowman .  I truly didn't intend it to be . He's seems like a stand up guy. I'm an idiot what can I say. 

[Yardstickgozinya]

https://www.spc.noaa.gov/products/outlook/day1otlk_0100.html

[Yardstickgozinya]

Extreme Heat Warning

URGENT - WEATHER MESSAGE
National Weather Service State College PA
302 AM EDT Sat Jun 21 2025

PAZ036-056-057-059-063>066-220800-
/O.UPG.KCTP.XH.A.0001.250622T1500Z-250626T0000Z/
/O.NEW.KCTP.XH.W.0001.250622T1500Z-250626T0000Z/
Franklin-Perry-Dauphin-Lebanon-Cumberland-Adams-York-Lancaster-
Including the cities of Chambersburg, Lebanon, Newport,
Gettysburg, Lancaster, Harrisburg, Hershey, York, and Carlisle
302 AM EDT Sat Jun 21 2025

...EXTREME HEAT WARNING IN EFFECT FROM 11 AM SUNDAY TO 8 PM EDT
WEDNESDAY FOR THE LOWER SUSQUEHANNA VALLEY...

* WHAT...Dangerously hot conditions with heat index values over 105
  expected for the Lower Susquehanna Valley.

* WHERE...Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon,
  Perry, and York Counties.

* WHEN...From 11 AM Sunday to 8 PM EDT Wednesday.

* IMPACTS...Heat related illnesses increase significantly during
  extreme heat and high humidity events.

* ADDITIONAL DETAILS...Heat index values and the associated risk of
  heat-related impacts will be highest on Monday and Tuesday.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Drink plenty of fluids, stay out of the sun, and stay in an
air-conditioned room.

Check up on relatives and neighbors, and provide pets with adequate
water and shelter from the sun.

Extreme Heat can be life-threatening among at-risk populations, such
as children, the elderly, and those with pre-existing health
conditions.

In addition to the daytime heat, overnight low temperatures will
also be very warm and oppressively muggy.

&&

$$

[mahantango#1]

[canderson]

Be safe everyone. Heat stroke comes on quick. 

[Jns2183]

Be safe everyone. Heat stroke comes on quick. 

Who here made a bargain with the devil? That's all I can think of after seeing the forecast upon landing. 88/80 seems quaint compared to what I'm staring at.

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[Voyager]

17 minutes ago, Jns2183 said:

Who here made a bargain with the devil? That's all I can think of after seeing the forecast upon landing. 88/80 seems quaint compared to what I'm staring at.

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Take a look at my avatar. It was me....

[Jns2183]

Take a look at my avatar. It was me....

I knew it!!!!

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[Jns2183]

I have to say that chat gpt impressed me mightily with how it handled, summarized, taught me, and predicted weather solely off of GOES satellite images. Although I don't fully comprehend all of the 20 different options available I think I have a pretty good understanding of about five. What they show how to read them and even how to forecast off of them somewhat. Amazingly, the 6 hour forecast it came up with based solely on the latest 12 image gif of each of the five was far superior to wunderground, AccuWeather, or the Mexican national weather service specifically for precipitation times, amounts, thunderstorm potential. I never would have thought about using GOES, if not for lack of radar, and I far underestimated all one could learn from them.

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[Jns2183]

Anyways here's a summary of that one night I asked it to write and maybe explain the extreme acoustics I was exposed to. If anyone can point to any errors I would be grateful, as sometimes it can be tricky to pin point if not very knowledgeable

In the evening hours of June 19th, 2025, Puerto Vallarta was situated in an exceptionally moist and unstable tropical environment. GOES-19 satellite imagery from Bands 13 (IR), 10 (mid-level water vapor), and Day/Night Cloud Microphysics RGB showed persistent deep convection offshore, with expansive moisture plumes extending across the Sierra Madre Occidental and into the Bay of Banderas. The atmosphere exhibited very high precipitable water values (greater than 2.5 inches), surface dewpoints in the mid to upper 70s F, and Convective Available Potential Energy (CAPE) exceeding 3000 J/kg - an ideal recipe for sustained convection and electrical activity. The area also featured an existing outflow boundary from earlier coastal storms lingering just offshore.


Around local sunset (20:00-20:30), satellite and GLM data showed a dramatic intensification in lightning activity and new convective towers developing along a southward-moving cold pool outflow boundary from inland convection. This boundary, colliding with the pre-existing marine boundary along the coast, produced strong mesoscale lift. The differential heating between the land and the ocean (which had reached maximum contrast at nightfall) further enhanced low-level convergence. These combined effects triggered explosive vertical motion and renewed updraft cores, fostering rapid growth of cumulonimbus cells.


Between 20:30 and 21:00 local time, observers reported lightning rates increasing from occasional flashes to nearly continuous discharges - as captured in GLM FED data and verified visually and audibly from the shoreline. The newly forced updrafts punched through already moist mid- and upper-levels, producing ice-rich supercooled regions ideal for charge separation. The result was highly electrified convective cells anchored along the outflow boundary intersection zone. Observers in high-rise buildings noted blinding continuous flashes and deafening cloud-to-ground strikes (positive CG dominated), likely linked to inverted charge layers due to elevated mixed-phase regions in tall tropical cumulonimbus.


The perception of extraordinary thunder loudness and resonance was enhanced by both the proximity of tall cells within approximately 5-10 kilometers and the urban canyoning effect of reflecting sound between nearby high-rise structures. The saturated air and low-level inversion common in coastal nighttime profiles would further trap and amplify sound waves. In this instance, even heavy rainfall (recorded as torrential but inaudible for several minutes under thunder) was overshadowed by continuous shockwave-like thunderclaps - an auditory signature of multiple near-simultaneous positive CG discharges striking around and within Puerto Vallarta's coastal zone.


The June 19th thunderstorm event in Puerto Vallarta exemplifies the dynamic interactions possible in tropical monsoon regimes when mesoscale boundaries, synoptic-scale moisture surges, and diurnal heating align. The explosive, continuous nature of lightning activity was not purely from the main convective complex offshore but from focused lifting at the outflow convergence zone in immediate proximity to the city. Satellite trends suggest this pattern could repeat in subsequent nights during peak monsoon phase. The event serves as an excellent case study of mesoscale convective boundary collision driving extreme nocturnal lightning outbreaks in tropical coastal environments.




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[anotherman]

Crazy to think there are people who actually wanted this type of weather.