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US issues emergency order for PJM Interconnection as heatwave looms By Thomson ReutersJun 30, 2026 | 5:14 PM June 30 (Reuters) – The U.S. Department of Energy on Tuesday declared an emergency across the nation’s largest power grid, citing soaring demand and supply ‌risks as extreme heat grips the region. In an order issued under Section 202(c) of the Federal Power Act, the energy secretary said a statutory ‌emergency exists in PJM interconnection’s region ⁠due to a ⁠combination of surging electricity demand and limited generation capacity. PJM submitted a formal request on June 29, warning of an “imminent electricity reliability emergency” driven by high temperature forecasts of around 95 degrees Fahrenheit or ⁠higher. PJM is projecting “peak loads ⁠of approximately 159,563 megawatts (MW) on July 1, 2026 and approximately 162,860 MW on July 2, 2026. These levels raise risks ‌of supply shortfalls, threatening grid stability. The grid operator also flagged that some generation units could face constraints due to a ⁠restriction under an environmental permit or state requirement. The DOE said the order is necessary to ensure ⁠sufficient electricity ‌supply and to protect public ⁠safety. PJM Interconnection serves a large swathe ‌of the eastern United States, and officials ⁠warned that without intervention, extreme weather conditions could lead to system stress severe enough to impact the ability to meet electricity demand

Last natural AC for a bit.

Beautiful pre-heat morning here in central MA! 68F with partial cloud cover, and still comfortable humidity. The breeze still feels cool, but since it's coming from the south I expect that will change soon.

I am heading to my sister's beach house in Narragansett out on Pt Judith today. Same thing there where only a north wind will bring in any heat. Its absolutely wild to leave there when its like 72 degrees and you get to Providence and its 102. I setup a wunderground station there a few years back. High was 72 yesterday and its only briefly touched 80 3 times this year. Probably one of the coolest locations outside of an island in New England.

Gonna roast at Winni.

US National Weather Service State College PA Favorites ·Sosrdonpeth7u6mg4li24tl5c5292hh44tt4fc1cg15fic3397310gum0fu3 · Power outages do happen more often during heat waves!

Car says 83 lol

I always remember Jul 95…mid level clouds until 9-10am and then it was off to the races. But yeah, clouds are collapsing pretty well on IR.

0.32". Nice surprise Sent from my SM-S921U using Tapatalk

Thats a good solid number, too bad others didn't make out so good. Last week I got most of my rain for the month.

The 3 hot days are in the plym mav mos plotting window now.

Clouds seem to dissipating fairly quickly. Might be a bunch of cirrus through late morning.

94/75 for DTW yesterday. So far overnight the low is 79 at DTW and 81 at DET.

Nah it’s just why nobody cares about convection around here except for a few poor souls.

Loud storm

My total for June was 4.35".

That's good stuff but way overcomplicates it. The simple fact it that the sun doesn't really heat the air- it heats the ground which then transfers the heat to the air by radiation, and it was probably determined that 2 meters was a height where there is significantly less direct influence from retention of heat/ radiation of heat from ground. And again, that height is approximately human head level.

Scott mad. Highest measured total was 21" at Darkhorse Lake MT elevation 8700 ft.

Mista Steinolina Mista Dave Steinolina You thought you could precipitate you thought you could fool me

I'll be headed to Mattapoisett tomorrow night....hoping the water will mitigate the temp. Any wind direction that includes that does not includes a north component is coming from the water, so that'll help. Running (ha) a race there on Saturday, too. Meanwhile, it was really cool at Pit2 yesterday, at least in the later afternoon/evening. Temp was in the 70's as I drove from Waterville toward Gardner and it was all of 72* when I pulled into the house here.

Picked up 0.56”. Nice drink before the heat

I woke up around 3:00 to thunder and was psyched. Looked at radar and went back to bed. Thank you Mr. Steiner. When you hit, you hit hard

Max here yesterday was 90.1 at 1:09 pm. 68⁰ now with a noisy thunderstorm in progress. 0.40" in the guage so far. Nice!

Quick heavy burst-hoping we get more Lots of lightning to north