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The 25 Hours Of Thunderhill Forecast Update - WED AM

11/29/2017

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By Scott Martin - ​@RaceWx4You
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One thing that can either keep you very interested or make you very frustrated is a forecast that continuously changes. Fortunately, ever-changing weather keeps my job interesting. So far, looking over the model data coming in for this weekend at Thunderhill Raceway Park, conditions have improved from my Monday morning forecast to today's.

Friday looks to be a brilliant day out at the track with a good bit of sunshine throughout the day with only a few clouds. Temperatures will start off the track day around 49ºF at 9:00 AM, and will warm up to around 63ºF by the mid-afternoon hours. No rain is expected, and winds will be shifting from the northwest at the start to out of the south by qualifying time.

Models have come into better agreement with the system moving down into the area from the Gulf of Alaska on Saturday, keeping the better rain chances well north of the track. Unfortunately, there will be just enough moisture close by to merit a very small chance of showers during the entire racing day, when the best chances of rain activity occurring in the late evening hours on Saturday to the pre-dawn hours on Sunday. The temperatures will be around 48ºF at 9:00 AM then warming to around 53ºF at the drop of the green flag. The daytime high will be around 60ºF at the 3:00 PM hour and steadily dropping to near 50ºF at 8:00 PM.

Any rain activity should diminish before the 4:00 AM hour on Sunday morning and the skies will begin to clear somewhat. The morning low of around 41ºF will occur close to the 6:00 AM - 7:00 AM time period. Soon after, you will notice the winds begin to pick up in speed out of the north-northwest from 5 MPH up to 15 MPH by the late morning hours. At the checkered flag, the temperatures should be around 57ºF. The daytime high of around 60ºF will be reached during the post-race activities.

I'll have radar up and running starting on Friday morning on the website. Be sure to follow our main Twitter feed @RacecastWx as we will be using it as our one-stop place for forecasts and updates on Twitter. We'll continue to have our personal accounts as well, but we'll only use those to retweet our forecast and for personal use. As always, our forecasts will still be featured on our Facebook page along with our Instagram account. Thank you and have a great Wednesday.
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To #SurviveThe25, We May Have To Deal With Some Rain

11/27/2017

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By Scott Martin - ​@RaceWx4You
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My first look forecast is out for the USAF 25 Hours of Thunderhill, and we have a little rainfall trying to sneak in. It's too early to give exact amounts and timing on the projected showers, but here is what we know at this point.

A system will be moving out of the Gulf of Alaska and will make its way into the area starting on Friday and will hang around throughout the weekend. Rain chances will start on Friday afternoon just before qualifying and will slightly increase throughout the overnight and pre-dawn hours on Saturday. Those chances will diminish a little throughout much of the day on Saturday before slightly rising for the late afternoon through the pre-dawn hours on Sunday morning. Unfortunately, a very small chance of a shower or two will remain throughout the end of the event on Sunday and afterwords for the awards ceremony.

For the graphic, the temperatures shown are the daytime highs on each day, with 9AM temperatures on Friday and Saturday, and the early morning low temperature on Sunday. When the event gets closer, I'll have a better breakdown with temperatures by the hour on raceday.

I'll have radar up and running starting on Friday morning on the website. Be sure to follow our main Twitter feed @RacecastWx as we will be using it as our one-stop place for forecasts and updates on Twitter. We'll continue to have our personal accounts as well, but we'll only use those to retweet our forecast and for personal use. As always, our forecasts will still be featured on our Facebook page along with our Instagram account. Thank you and have a great Monday.
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Forecast for the Six Hours of Bahrain

11/13/2017

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Doug Schneider - @Race4caster
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Unsurprisingly, the forecast for Bahrain later this week has lots of sunshine and warm temperatures - just what you'd expect for an arid desert region. At the surface, high pressure will be centered over the western portion of Saudi Arabia on Thursday, then drift east to the Persian Gulf through Friday and Saturday. In the mid and upper levels, a ridge will be crossing the area. As this ridge moves to the east of Bahrain on Saturday, there may be an increase in high and midlevel clouds behind it, associated with an approaching jet stream and upper trough. But other than some increasing clouds on Saturday, each day will have very similar weather conditions to the day before it, with high temperatures in the mid 80s (upper 20s C) and lows around 70 (around 21 C). 
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Friday Night Update For Trans Am At Daytona

11/10/2017

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By Scott Martin - ​@RaceWx4You
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Saturday's weather could be a little wet and definitely windy throughout the day. It will not rain all day as showers moving onshore from the Atlantic will be scattered in nature, but a brief heavy shower could be possible, especially during the late morning through the afternoon hours. The chance of the speedway getting rain will be around 40%. Skies will be mostly cloudy when it's not raining and afternoon highs will be in the lower 70s. Winds will be out of the northeast at 10-20 MPH with gusts up to 28 MPH possible. Rainfall amounts throughout the day should be less than 1/4 inch. Let's cross our fingers that the rain activity stays to the north.

Radar will be up and running on our site throughout the day, so feel free to take a look at any time. If you're using a smartphone to browse the radar, be sure to view as desktop site. Be sure to follow our main Twitter feed @RacecastWx as we will be using it as our one-stop place for forecasts and updates on Twitter. We'll continue to have our personal accounts as well, but we'll only use those to retweet our forecast and for personal use. As always, our forecasts will still be featured on our Facebook page along with our Instagram account. Thank you and have a great Friday night.

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Forecast update for the 24H Series at COTA

11/10/2017

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By Doug Schneider - @Race4caster
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No big changes to the forecast for COTA and the 24H Series races this weekend as the expected weather pattern is still on track. Today has had a good amount of cloud cover that has kept temperatures in the lower to mid 60s. Tomorrow looks like it will be very similar, but it should get a little warmer as winds will be from the southeast instead of the east-northeast. A few breaks in the cloud may allow a little sunshine now and then, but most of the day will be cloudy. 

A cold front is still expected to approach the area from the northwest on Sunday. I think most of the shower activity with the front will remain to the west while the race is taking place, but I can't entirely rule out a shower reaching the track. I've left the Impact for the day at None because I think that even if there is a shower (which is only a 20% chance of happening at all), it will be very light and won't influence the race too much. Overall, it will be a nice weekend to get out and watch some awesome race cars.  
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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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