A double-peaked, long-duration solar flare measuring M5.7 erupted from Active Region 3363 (beta-delta) at 00:06 UTC on July 18, 2023, producing an asymmetric halo CME and S2 – Moderate solar radiation storm.
A severe flash flood caused by very heavy rainfall resulted in five confirmed deaths and left two children missing in Pennsylvania on Saturday, July 15, 2023. The deluge, measuring between 152 to 178 mm (6 – 7 inches) within 45 minutes, was said to have overwhelmed storm sewers, brooks, and streams.
A very strong earthquake registered by the USGS as M7.2 hit near the coast of Alaska Peninsula, U.S. at 06:48 UTC on July 16, 2023. The agency is reporting a depth of 32.6 km (20.2 miles). EMSC is reporting M7.4 at a depth of 10 km (6.2 miles).
Another explosive eruption took place at Bagana volcano, Papua New Guinea at around 21:30 UTC on July 14, 2023, sending a discrete plume of ash and gas to 16.4 km (54 000 feet) above sea level. The Aviation Color Code remains at Orange.
In a week marked by record monsoon rains, northern India faced severe flooding that resulted in over 100 deaths, extensive property damage, and widespread disruption. The worst-hit region was the mountainous Himachal Pradesh state, where floodwaters claimed at least 88 lives and injured more than 100 people.
On Wednesday, July 12, 2023, the greater Chicago area was hit by a series of tornadoes and thunderstorms, causing significant disruption to air travel and damaging homes in several counties. The severe weather forced the temporary halt of all air traffic at O’Hare and Midway airports and prompted the evacuation of their control towers.
A historic downpour on Monday, July 10, 2023, unleashed a torrent of over 228.6 mm (9 inches) of rain across Vermont, leading to devastating floods, the worst the region has experienced in almost a century. The capital city, Montpelier, found itself in a precarious position as the Wrightsville Dam teetered on the brink of its capacity, a scenario unseen since its construction.
A slow-moving storm system dumped more than 250 mm (10 inches) of rain over the state of New York on July 9, 2023, causing catastrophic flooding. The deluge led to at least one confirmed death in Highlands, Orange County, and triggered a state of emergency in both Orange and Ontario counties.
After 6 days of intense seismicity between Fagradalsfjall and Keilir, Reykjanes Peninsula, Iceland, a new volcanic eruption has started just northwest of Litli Hrutur at around 17:00 UTC on July 10, 2023.
Severe rainstorms resulted in destructive mudslides and flooding in Japan’s southwestern region on July 10, 2023, leading to at least five fatalities and leaving three people missing. With record-breaking rainfall, over 420 000 people were under the highest level of evacuation warning by the Japan Meteorological Agency (JMA).
