08.03.10
Posted in Tropical Weather, Weather News at 11:05 am by Rebekah
Tropical Storm Colin formed out over the Atlantic this morning, but is not expected to become a hurricane and is unlikely to pose any threat to land, aside from possibly a few of the Leeward Islands.
Colin is a new addition to the Atlantic storms name list, as Charley was retired following the 2004 hurricane season.
- National Hurricane Center forecast track for Tropical Storm Colin.
Infrared satellite image (Colin is located at the red tropical storm symbol), with forecast track and wind shear in knots (higher wind shear is not conducive to tropical cyclone development). Courtesy of UW-CIMSS. Click to enlarge.
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08.02.10
Posted in Non-US Weather, Weather News at 8:17 am by Rebekah
As a follow-up to this past week’s posts on the heat wave in western Russia, here is a plot of the temperature anomaly for July 29th, Moscow’s hottest day on record.
Note that the average temperature for Moscow on this day was 10 to 12 °C (18 to 22 °F) higher than the climatological average temperature for July 29th.
Although temperatures have since cooled down a few degrees, Russia is still under a massive ridge. This ridge will continue to build through at least the end of this week, when temperatures in Moscow could reach 100 °F or greater (possibly breaking the new record yet again).
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07.31.10
Posted in Weather News at 1:43 pm by Rebekah
NWS Norman forecast for Norman this week.
Ugh. Just looking at all those glowing balls of orange makes me hot and thirsty.
Still waiting for the first big summer MCS…if it comes…
See also: More Heat (Jeff Makowski’s blog)
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Posted in Weather News at 1:06 pm by Rebekah
Last Friday, on July 23rd, a record-breaking 8-inch-diameter hailstone fell in Vivian, South Dakota.
This hailstone measured 18.625 inches in circumference and weighed 1.9 pounds!
Reports from eyewitnesses describe hailstones even larger than this in the area, some possibly as large as 11 inches in diameter.
The largest hailstone previous to this was 7 inches in diameter, 18.75 inches in circumference, weighed 1.6 pounds, and was found in Aurora, Nebraska in 2003.
For photos and more information, check out the following links:
July 23rd Storm Reports and Pictures of Large Hail (NWS Aberdeen)
Vivian Hail Officially Sets Record (Severe Studios)
Vivian Residents Relate Tales of Massive Hailstorm (Mitchell Daily Republic)
Overview of Thunderstorm Producing Record Hailstone (Patrick Marsh’s blog)
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07.29.10
Posted in Non-US Weather, Weather News at 12:10 pm by Rebekah
On Tuesday, I posted on how western Russia is in the midst of a record heat wave. On Monday, Moscow had broken the record for the city’s all-time highest temperature, at 37.4 °C (99.3 °F).
However, as the model forecast I showed on Tuesday predicted, Moscow broke that record AGAIN today!
Currently, the all-time highest temperature for Moscow is 37.8 °C (100.0 °F), set on 29 July 2010 at 4:00 pm.
Some parts of Moscow reached temperatures as high as 39 °C (102 °F), but the official record stands at the location where weather records have been taken for the last 130 years.
According to Weather Underground, the previous record temperature for July 29th in Moscow was set in 2002, at 86 °F (30 °C), while the average temperature for this day is only 68 °F (20 °C)!
Some relief may be found soon, though, as a cold front is expected to pass through tomorrow and drop the temperatures a bit.
With regard to the fires around Moscow, they are not as large as the ones in far eastern Russia that John brought to my attention in his comment on Tuesday’s post (check out this amazing satellite image he linked to); however, they are affecting a more populated area and causing serious health problems.
I have seen Alexander Chuchalin, Russia’s chief pulmonary doctor, cited in several news articles as saying the current level of carbon monoxide in the air in Moscow could have the same effect on someone as smoking two packs of cigarettes every three to four hours.
The smoke should at least begin to disperse as the front moves through tomorrow with a chance of showers.
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