TODAY'S FUN LINKS: | | New Evidence Data Centers May Cause Hotter Weather (may require subscription) Forbes - 19 May 2026 The impact of data centers on energy and water supply is well documented, but the first in a series of new studies has revealed another potential impact: They may be creating enough heat to affect temperatures around them and produce heat islands. |
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WEATHER HAZARDS (During The Next 24 Hours)
SEVERE WEATHER OUTLOOK
(potential for tornadoes, damaging winds, and large hail within the next 24 hours)
ISOLATED Severe Thunderstorms
(Microbursts, Large Hail, Isolated Tornadoes)
S AB....S SK....MT....N, W WY....S ND....N SD
Some Thunderstorms May APPROACH Severe Limits
S GA....N, C FL
HEAVY RAINFALL OUTLOOK
(potential for an inch or more total rainfall within the next 24 hours)
Isolated Locations In
S AB....S SK....MT....N, W WY....S ND....N SD
(QPF 1 - 2")
Isolated Locations In
S GA....N, C FL
(QPF 1 - 3")
EXCESSIVE HEAT RISK
(Potential For Temperature To Exceed 95 deg F)
Scattered Locations In
S AZ....S NM....TX....OK....W, C KS....W NE....SE WY....C, E CO
(a review of important weather features around the world)
IODC
ECMWF; METEOBLUE; EUMETSAT
The hot grip of summer is already well-established in Saudi Arabia and Iran.
Since the polar westerlies are retreating well to the north of the stretch from North Africa to India, heat and dryness are entrenched and in full force, especially from the Arabian Peninsula into Iran, Afghanistan, and Pakistan. And this is not the worst of it; the heat ridge in question seems locked in, with even bigger positive deviations in temperature a given from Mesopotamia to beyond the Indus Valley. There could be some reasonable drop in readings from Turkey, the Caucasus and the Caspian shoreline as two separate 500MB troughs and surface cold fronts pass to the north of Persia in the near term and medium range. But with no hope of a moisture axis developing (the "Out Of Africa" fetch is long gone), better get ready for the harsh brutal El Nino summer that may allow the searing heat to reach across the deserts as far north and east as Mongolia and China.
HIMAWARI 8
JTWC; METEOBLUE; Kochi University
Typhoon Jangmi seems poorly organized, showing a very large eye with an uneven convective presentation. Jangmi may weaken and move directly over the Japanese Archipelago in the new week, which may not afford a boost to the polar westerlies and amplification of the jet stream. This is why a colder outcome is unlikely, as a stronger typhoon that moves parallel to Japan into a merger with a 500MB low near the Aleutian Islands is the usual scenario that would end hot weather for a while.
Very hot and dry conditions are seen across most of Indonesia and Australia below the MJO impulse series, which fits well with ascendant El Nino climatology. There are areas of rain and thunder in the south central portions of the subcontinent, but warmer than normal, with dryness, conditions are highly probable across the Maritime Continent.
GOES WEST
NOAA/NESDIS
This image shows the equatorial moisture axis in vivid detail. This feature is tied to the Madden-Julian Oscillation, and can give rise to either tropical cyclones or waves that represent the core of the MJO, traveling west to east. There is some potential for a depression or minor tropical storm southwest of Baja California in the near term, while the disturbed area southwest of Hawaii could merge with the strong cold storm entering the Gulf of Alaska. The alignment shown on many of the numerical models favors a significant thunderstorm outbreak in the Pacific Northwest and the Prairie Provinces, while a hot and humid scenario should take shape across the eastern two-thirds of the lower 48 states in the 6-10 and 11-15 day time frame.
GOES EAST
NOAA/NESDIS
The northwest flow from Ontario and Quebec has brought another small storm and frontal structure through New England and the Mid-Atlantic states. Thus, while other portions of the lower 48 states see daily increments of increased temperature and less precipitation, the Northeast stays cool with occasional storminess. The storm complex in the Prairie Provinces will drop toward the Midwest and slowly fall apart, in the process limiting chances for hot air in the Ohio and Tennessee Valleys into the Carolinas and Virginias. Much of the Southwest and south central U.S. will see hotter values once thunderstorms come to an end.
A broad tropical wave covers Columbia, Venezuela and the Caribbean shoreline countries. Other ITCZ impulses in the equatorial Atlantic Ocean will set off heavy thunderstorms along and above the Amazon Basin. Very strong cold fronts and upper storms in the eastern sub-equatorial Pacific Basin will continue the recent pattern of colder air and bursts of rain and thunder seen in Argentina and on into southern Brazil.
METEOSAT
ECMWF; METEOBLUE; EUMETSAT
Well you knew this could not last forever, right?
The amazing heat ridge complex that sent record warmth far north into the British Isles and Scandinavia in the past few days will collapse in early week. The storm series over the northern Atlantic Ocean will crush the subtropical high, introducing showers and thunderstorms, then a drop into seasonable readings (actually cold in the U.K. and Norway) that will most likely stay through June 9. Note that colder air and a large trough are over Russia and the Ukraine, and may give Central Asia the last cool breath of Spring before the extreme heat of Summer comes roaring out of Saudi Arabia and Persia.
There are still southwest winds aloft across the northern half of Africa, even allowing for moisture advection with thunderstorms to reach Libya, The ITCZ is percolating across the equatorial African nations, but that condition will likely decline in about three or four weeks as the El Nino episode starts to strengthen. Even the southern half of Africa is relatively warm and not showing any colder signs of the impending winter.
