Summer 2017
We’re approaching the mid point of meteorological summer 2017 and it’s been largely warm and sunny across South and eastern England extending into France and Iberia where the core of the heat has been. Low pressure positioned near Iceland on the other hand has led to a somewhat traditional ‘mixed summer’ for Northern Ireland and Scotland following a […]
Multiple thunderstorm clusters which merge into one large system often spanning 100+ miles during late evening and overnight is known as a mesoscale convective system. One such system crossed the open cornfields of Iowa and Illinois into the Chicago metro overnight causing power outages and flash flooding. While amazing sights on infrared, their amazing underneath with frequent lightning, […]
Yesterday was a washout across the southern UK and the first of July. This was good for gardeners but not so good for sun worshippers. Yesterday afternoon’s radar. Nearly 2 inches fell in spots. Dreary old day over London. Covers were on at Wimbledon for the first prolonged period of the tournament so far. After […]
Semi permanent upper level ridges over the Southwest tend to fluctuate in strength during June and July but persistency in strong 594-597dm heights this summer is unusual. These cells tend to build into the 594-600dm range for only 3-6 days before deflating and are typically followed by weaker cells but this summer wants to hold onto the heat wave producing 594 to 597dm. Heights have fallen this […]
Thunderstorms swept across metro Paris Sunday evening delivering 2.1 inches of rain in just 2 hours and 1.9 inches within 1 hour which set a 24-hour rainfall record for July and all-time hourly record. This broke the previous hourly record of 1.8 inches set in July 1995. On the southern edge of central Paris, Montsouris Park received 2.6 inches […]
Heat is normal, so too are heat waves but the persistency of this summers intense heat is unusual even for the Southwest. If it continues then I wouldn’t be surprised if this turns out to be one of the hottest summers on record. Las Vegas tied it’s all-time record last month and during the past weekend, the thermometer […]
Thanks to low pressure over Spain, S, SW winds blowing off Africa has enhanced an already warm air mass affecting the Balearic Islands Friday. On the western side of Mallorca, open to the Saharan wind, temperatures touched the 40C mark which is rare for here. The 40.1C recorded at Palma Airport Friday was just 0.5C shy of the July […]
It wasn’t tropical storm Nanmadol to blame for the 15 inches of rain which fell in just 4 hours across southern Japan but convergence along the semi permanent baiu frontal. This front dropped south out of China bringing warm, moist air from the SW and cool, dry from NW in the wake of the TS. A record 542mm of rain fell within 24 hours and […]
We’re in the heart of the Northern Hemisphere summer with heat as you’d expect, dominant. However it’s anything but summer-like in Greenland where temperatures dipped to a new July record this week. July has opened very cold across most of Greenland. The temperature dipped to -33C (-27.4F) on the morning of July 4th at the DMI recording station, perched 10,551ft on […]
A powerful upper ridge continues to bake the Great Basin and Northern Rockies in temperatures 10-15 above normal this week and through the first half of the weekend but that core of heat shifts onto the Plains next week. This summer’s heat should peak in SW California including the LA area during Friday. Drought has worsened in the […]
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