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Forecast For Round 12 Of The Trans Am Series At COTA

10/30/2017

 
By Scott Martin - ​@RaceWx4You
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Not a bad looking weekend out in Austin, Texas for this weekend's Trans Am Championship presented by Pirelli action at Circuit of the Americas. Warm temperatures can be expected throughout the event weekend, along with mild mornings, and dry conditions. A high pressure center will develop over northern Mexico, and this will allow for a southwesterly flow bringing in warmer air from south of the border. No rain is expected throughout the event weekend, but be sure to bring your hats, shades, and plenty of sunscreen. Highs will be in the 80s with early morning lows in the 60s. This would be nearly perfect weather for the summer, but pretty warm as highs will be nearly 10 degrees warmer than average for early November. Be sure to stay hydrated.

Forecast for the WEC 6 Hours of Shanghai

10/30/2017

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By Doug Schneider
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A large high pressure system is expected to be the main weather feature throughout the 6 Hours of Shanghai weekend, which should provide nice weather conditions each day. The high pressure center starts out to the northwest of Shanghai on Friday, and as it builds in behind an exiting front, it will be breezy, with a north wind at 10 to 20 mph. The high shifts east through the weekend, and as it moves toward the Korean Peninsula and Japan, it will turn winds to the east. This will bring some moisture off the ocean - enough to increase cloud cover on Saturday and Sunday, but likely not enough to produce rain as the moisture should be shallow and confined to the low levels of the atmosphere. However, I'll be keeping an eye on this to see if it changes as we get closer to the weekend. 
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Race cars and weather - the best photos of 2017

10/25/2017

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By Doug Schneider - @Race4caster

It has become an annual tradition at Racecast Weather to share with you the best photos that combine our two favorite things - weather and race cars. Nothing compliments the beauty of race cars like a breath-taking weather scene in the background. So here's the collection for 2017 - click to enlarge. Hope you enjoy them.
Mount Panorama sunrise. Credit: Andrew Hall, dailysportscar.com
Crepuscular rays at Mount Panorama. Credit: @Bathurst12Hour via Twitter
Rain shower at Mount Panorama. Credit: Matthew Everingham, Speedhunters
Sunset at Sebring. Credit: Martin Spetz, Dailysportscar.com
Rainbow over Ford GT test. Credit: Pipo Derani via Twitter (@PipoDerani)
Crepuscular rays at CTMP. Credit: Pirelli World Challenge via Twitter (@WCRacing)
Thunderstorms during DTM race at Nurburgring. Credit: Audi Sport via Twitter (@audisport)
Real Time Racing at the top of Pikes Peak. Credit: Real Time Racing via Twitter (@realtimeacura)
Sunset and rainbow at Watkins Glen. Credit: Carlin Sanderson (@carlinsanderson)
24 Hours of Spa. Credit: Porsche Motorsport via Twitter (@PorscheRaces)
Thunderstorms near Utah Motorsports Park. Credit: Brian Cleary, Sportscar365
Rainbow over Watkins Glen. Credit: Watkins Glen Twitter (@WGI)
6 Hours of Mexico. Credit: Porsche Motorsport via Twitter (@PorscheRaces)
6 Hours of Mexico. Credit: Chip Ganassi Racing
Fog at Virginia International Raceway. Credit: VIR via Twiter (@VIRnow)
24H Series at COTA. Credit: @24HSeries Twitter
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Friday Forecast Update for F1 USGP at COTA

10/20/2017

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By Scott Martin - ​@RaceWx4You
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Forecast is still pretty similar from what I first put up earlier this week. Just made adjustments to the rain chances for each day. Stay weather aware as lightning may be an issue with storms. When thunder roars, go indoors. Good news is that rain will come to an end before noon on Sunday. If that happens, track may dry out and the slicks can be put to use. Radar is up and running.
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Forecast For USGP At COTA Involves Rain Tires

10/18/2017

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By Scott Martin - ​@RaceWx4You
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Cold Front Position Valid Sunday 7AM
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Forecast Precipitation Amounts Through Weekend

Looking at the latest forecast models for the Austin area throughout the weekend show that an approaching trough with an associated cold front will be making its way toward the area on Friday and Saturday. With that, along with high pressure and ridging to the east, this is allowing warm and moist gulf air to flow in from the southeast. Skies will be mostly cloudy, and as the trough gets closer, we will have a chance of isolated showers and thunderstorms on Friday and during the day on Saturday. Highs on both of these days will be in the lower 80s (27-28ºC). Winds will be out of the east-southeast around 5 MPH (8 KPH) on Friday, and out of the south at  5-10 MPH (8-16 KPH) on Saturday.

The trough arrives with the cold front on Saturday evening and will work its way through during the first half of Sunday. This will bring a decent chance of showers and thunderstorms for Saturday night through a good part of the daytime hours on Sunday. Unfortunately, rain chances at this time doesn’t appear to drop off until after 5:00 PM (2200 UTC). Winds will be quite breezy and cool as they will shift from the west to out of the north by the afternoon hours, averaging between 5-15 MPH (8-24 KPH) with gusts up to 20 MPH (32 KPH) possible. Rainfall amounts of 1/2 inch to 3/4 inch (12.7mm-19mm) are possible, and rain tires are almost a sure bet. Afternoon highs will be much cooler only reaching the upper 70s (24-25ºC).

Lightning may be an issue with any rain throughout the weekend, so please seek shelter if you hear thunder. The saying is “if you hear thunder, you are close enough to be struck by lightning.” So when thunder roars, go indoors. Radar will be up and running on our website starting on Friday and will be up throughout the weekend. Please feel free to share any of this information with friends or relatives that are headed out to COTA for the event.
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    Authors

    Doug Schneider, Scott Martin, and Stephen McCoy are race fans and meteorologists dedicated to providing accurate forecasts and timely weather updates at racing venues around the world. We forecast for IndyCar, Indy Lights, Pro Mazda, USF2000, IMSA, Blancpain World Challenge America, and World Endurance Championship, as well as major SCCA and NASA events.


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