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WWA Summary for Flash Flood Warning Issued by LWX BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Baltimore MD/Washington DC 701 PM EDT Sun Jun 15 2025 The National Weather Service in Sterling Virginia has issued a * Flash Flood Warning for... Northwestern Charles County in southern Maryland... * Until 1015 PM EDT. * At 701 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 3 inches of rain have fallen. The expected rainfall rate is 1 to 2 inches in 1 hour. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Radar. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... Accokeek... Bryans Road... Potomac Heights... Pomfret... Marbury...

If they continue to play well up to the all star break it definitely makes their trade deadline plans merky.

Last couple days here has been mostly clouds and smoke. Only a trace of rain despite higher odds in the forecast thre last 72 hours. Month-to-date rainfall in Middletown, DE only .76 " The crazy high rainfall totals of May over 6 " unlikely to repeat. Might need to water the garden tomorrow, as the overall soil moisture levels have been declining the last 7 days. Long gone are the values above 32 % , in this area soil moisture has declined back below the 5 and 10 year averages of 26 % The clouds and cool air are masking the recent dryness.

Got the lotion and tissues out for this stretch?

Indeed! But oy...we'd still have to beat history though. To date, no team that's lost by 20 runs has ever made the playoffs. I see a scenario where if we play really we may just miss. Even that would still bode well for the next season though! Just wanna see them at least make a run at it if they get closer.

Going to be impressive for a few days

this *surface temp* thing belongs in a category all its own https://www.science.org/content/article/move-over-death-valley-these-are-two-hottest-spots-earth Death Valley holds the record for the highest air temperature on the planet: On 10 July 1913, temperatures at the aptly named Furnace Creek area in the California desert reached a blistering 56.7°C (134.1°F). Average summer temperatures, meanwhile, often rise above 45°C (113°F). But when it comes to surface temperature, two spots have Death Valley beat. A new analysis of high-resolution satellite data finds the Lut Desert in Iran and the Sonoran Desert along the Mexican-U.S. border have recently reached a sizzling 80.8°C (177.4°F). More than 11,000 World Meteorological Organization manned and automated weather stations measure air temperatures in the shade, in ventilated hutches about 1.5 meters above ground level. But vast swaths of Earth's surface, especially in remote regions, lack these instruments, leaving them out of the record books. SIGN UP FOR THE AWARD-WINNING SCIENCEADVISER NEWSLETTER The latest news, commentary, and research, free to your inbox daily For the past 2 decades, a pair of Earth-observing satellites equipped with NASA's Moderate Resolution Imaging Spectroradiometer (MODIS)—an instrument that measures everything from ozone levels to phytoplankton abundance—have scanned the entire globe, day in and day out. In areas without cloud cover, MODIS measures the infrared heat emitted by surfaces to take their temperature—essentially, how the soil, dirt, or ice would feel if touched. Surface temperatures tend to run hotter than the air above, especially on sunny days when surfaces are heated both by air and the Sun's radiant energy. "Think of your car sitting in a parking lot on a summer day and how the handle burns your fingers. Or the sand burning your feet at the beach," says ecologist David Mildrexler of the conservation organization Eastern Oregon Legacy Lands. In 2011, Mildrexler and his colleagues gleaned from MODIS data that summer temperatures routinely soared above 60°C (140°F) in arid regions, with a high of 70.7°C (159.3°F) in Lut in 2005. Since that study, software improvements have sharpened MODIS's resolution from 5-kilometer pixels to 1-kilometer pixels, bringing even hotter spots into focus. Lut hit its all-time high in 2018, a record the Sonoran, in a weird coincidence, matched the next summer, Yunxia Zhao of the University of California, Irvine, and colleagues report this month in the Bulletin of the American Meteorological Society. But with its "consistently hot footprint over a large area," says Mildrexler, who was not involved in the present study, "the Lut Desert has really emerged as the hottest place on Earth." Zhao and her colleagues uncovered other superlatives. The maximum temperature swing in a single day was 81.8°C (147.3°F), from –23.7°C (–10.7°F) to 58.1°C (136.6°F) on 20 July 2006 in China's Qaidam Basin, a crescent-shaped depression hemmed in by mountains on the Tibetan Plateau. And the coldest spot on our planet? No big surprise: Antarctica. But a satellite reading of –110.9°C (–167.6°F) in 2016 is more than 20° chillier than the coldest air temperature recorded in 1983. It's unclear whether climate change is driving up surface temperatures, Zhao says. But she notes that the Sonoran's highs coincided with La Niña, a climate oscillation featuring cooler surface temperatures in the central Pacific Ocean and drier desert conditions. Higher temperatures are bad news for desert creatures being pushed to the edge of their heat tolerances. "These extremes are really laying it on the ecosystems," Mildrexler says. On the flip side, he says, the data reveal an impressive cooling effect of forests. Trees tap water with their deep roots and dissipate heat through transpiration, he notes, which cools their canopies and the surrounding air. "That keeps maximum temperatures down and protects biodiversity." And that offers a lesson for urban planners, Mildrexler says: Greener really is cooler.

https://community.netweather.tv/topic/69523-heat-bursts/ Sometimes known as heat flashes these are a pretty rare phenomenon. These have been well documented in the US and South Africa and are caused by either by a downburst of air from collapsing thunderstorms or from katabatic downsloping of hot air funneled and focussed through mountain valleys. There are apocryphal reports of incredible heat bursts temperatures: 188F in Abadan, Iran, 158F near Lisbon, and 152F at Antalya, Turkey. The hottest certified heat burst temperature was 110F recorded at Kimberly, South Africa, during the passage of a thunderstorm. The temperature rose from from 67F at 2100 to 110F at 2105 and then fell back to 67F by 2145. Stumbled on this by chance in my archives A letter by F. B. Parkinson of Madibi Mines in Kimberley South Africa "At 9pm on the 20th September 1911, a thunder cloud approached from the west, bringing with it a squall of wind that caused the temperature to rise in a few minutes to 110F. By 9.45pm, it had fallen again to 67F which I expect the temperature before the squall. I do not think my thermometer responded quick enough to register the highest point but it is safe to say it rose 40F in 5 minutes." Here's a recent one which occurred in Adelaide in early 2009: "On the morning of January 29, an exceptional nocturnal heat event occurred in the northern suburbs of Adelaide around 3 a.m. Strong northwesterly winds mixed hot air aloft to the surface. At RAAF Edinburgh, the temperature rose to 107°F (41.7°C) at 3:04 am. Such an event appears to be without known precedent in southern Australia."

a firsthand acct https://www.reddit.com/r/weather/comments/6zjtby/did_the_140f_kopperl_tx_heat_burst_of_june_1960/ 1birder • 2y ago I lived on a farm outside Kopperl when this happened. I was nine years old and I remember waking up in the middle of the night when our old window water cooler went off. It was eerily silent and then the house was hit by a very strong and HOT wind. My father decided we needed to go to the storm cellar outside the back door and we stayed in there for quite a while. Later we saw the large advertising thermometer at Riddle's Bait shop in Kopperl which had burst from the heat. On the news we saw photos of someone's cotton field and all the plants were scorched. Very, very strange but I had no idea this was such a land mark event. I wrote three comments in different places about the event that you might be able to read if you search my name. I don't know why anyone would doubt that this happened. DFW news stations have shown video taken at the time that clearly pictured the scorched cotton crop. More damage may have been shown but that is what I remember most clearly....along with the shattered thermometer at Riddle's Bait shop. As far as an accurate exact temperature I doubt that could ever be confirmed unless someone in Kopperl was "into" weather and had good instrumentation. The Meridian Tribune is a good county weekly newspaper and they could run something asking for information from others who lived through the event. I was only 9 so someone who was older at the time would be better able to give details. This was a very strange event but I remember being much more frightened when we had to go to the storm cellar during tornados.

So I guess a dry second half of Father's Day is out of the question?

For example, a well-documented heat burst in Kimberly, South Africa, saw a temperature rise from 67°F to 110°F in just five minutes.

ACATT gone wild. Things you love to see

hey what about us in Nassau county?

its hotter here too in SW Nassau but somehow we get grouped with the barrier islands for some odd reason.

I have written about this extensively, there were burnt crops and even burnt trees and burnt wooden doors.

really? well, London hit 40c a few summers ago so why can't we lol

Os were 17 under at one point and now 10 under. Keep it moving in the right direction. 5 under or better by the all star break and potentially getting Bradish and Wells back for the second half makes a wildcard seem doable.

Not a lot of midnight highs in summer, but got one today.

1960: A heat burst struck Kopperl, TX, located about 50 miles southwest of Fort Worth from a dying thunderstorm. As the air sank, it warmed to around 140°. When the heat burst struck the ground, winds fanned out at over 75 mph. People had to wrap themselves in wet blankets to protect themselves from the heat. All crops were destroyed by the heat. (Ref. Wilson Wx. History) If this had been recorded at a weather station it would have been the highest ever verified temperature not only in the U.S.A. but on earth. I wonder what evidence existed for saying it was 140 degrees?

0.36" total here. Well modeled tbh. The HP wedging southward with the stable marine air killed any storms moving east/northeast. Lucky to get a little as they were dying. Nothing today just cool and overcast. High of 67. Under an inch total for the month. Very few hits and plenty of misses so far.

Awesome. I’m in NYC for 6/23-6/24

Getting a small but pretty potent pop up now. Probably will be quick unless it spreads out or others follow. Edit: That short popup has been quickly followed by a line of heavy thunderstorms coming in with frequent CTG lightning.

Okay, okay, I'll install. Sheesh..

Had a streak of wet months since February here, so this month looks to continue the stretch. The last dry month was back in January.