By: Harris Cooley

Mostly clear weather will be in store for this weekend at the Azerbaijan GP. A Low pressure system in the Southern part of the Caspian Sea will keep some moisture in the area through the weekend. Winds coming off the coast will be sustained and moderate in the afternoons with cloud coverage building as the days progress as well. Winds shift a bit more northerly as the Low moves out of the area, though will be bringing increased cloud coverage and possible rain chances that afternoon. Radar surveillance could play a big role this weekend. See metric graphic below...

By Doug Schneider

Unfortunately, the weather will be wet the weekend for the INDYCAR finale at Nashville Superspeedway. Rain is going to cause some interruptions to the on-track sessions, especially on Saturday. 

The remnants of what was Hurricane Francine will be located over Arkansas on Friday, and slowly meander around Mississippi and West Tennessee through the weekend. This will place Nashville Superspeedway in a very moist pattern, with a southerly flow of moisture from the Gulf of Mexico feeding into Middle Tennessee all weekend. Rain bands on the outer extent of the low pressure system will bring periods of rain at the track on Saturday, and there will likely be significant delays or cancellations to the on track action for INDY NXT and INDYCAR practice and qualifying. Rain amounts on Saturday are expected to be between a half inch and one inch. A thunderstorm will be possible, but the chance of one is low as coverage of storms in Middle Tennessee is expected to be isolated.

On Sunday, the low pressure system will weaken and drift slightly to the west, and high pressure over New England will build southward. The outer rain bands may shift a little to the west, which may result in more dry time at the track. There is uncertainty with where these rain bands will be located on Sunday. The best case scenario is that the high pressure system is strong enough to push those bands west of the track, and the afternoon hours are mostly dry. The worst case scenario is that the high doesn't build in enough, and rain bands set up over the track again, like Saturday. Expected rain amounts on Sunday are between a quarter and a half inch, but that will depend on where those rain bands set up. 

I really wish I had better news about the weather, as I'll be attending the race. I will try to post some radar and weather updates from the track at our X account, @RacecastWx.

By Doug Schneider

Unfortunately, the weather pattern looks like there will be wet conditions at times for the INDYCAR season finale at Nashville Superspeedway. A tropical low pressure system is expected to move northward from the Texas coastline to the Mid Mississippi Valley this week, and linger over West and Middle Tennessee through the weekend. The location of this low will mean plentiful moisture will be transported north from the Gulf into Tennessee. 

With this pattern, showers are likely both Saturday and Sunday, with a low chance of a thunderstorm. Timing and rain amounts are unclear this far out, but the afternoon hours appear to have the best rain chances as surface heating creates instability for showers to develop. I expect that there will be some interruptions to several on track sessions both days. 

Check back later in the week for updates and further details on timing and rain amounts. 

By Doug Schneider

Rain is moving through the Milwaukee area this morning. Most of this rain should be out of the area between 8 and 10 am. The first on track activity is INDY NXT practice at 1:30 pm CDT, which should allow for plenty of time to dry the track. I don't expect that there will be any weather impacts today, as a cold front pushing through this afternoon will be followed by drier air and perhaps some sunshine at times. The rest of the weekend will have very nice weather. A second cold front will move through on Saturday night, which will bring cooler temperatures on Sunday, with highs in the mid 70s and a north wind at 10 to 15 mph.

By: Harris Cooley

Pretty consistent weather is in store for the Italian GP at Monza as High pressure lays over the area. Sunny skies and warm temps will keep track temps with low wind speeds throughout the weekend as well. There is a slight chance for rain on Sunday but this would occur later in the evening if so. Drivers will have mostly favorable conditions for competitive racing so this should be an exciting one. Metric graphic pasted below...

By Doug Schneider

A nice weekend is in store for INDYCAR's return to the Milwaukee Mile. A cold front will push through the area on Friday, but the showers and thunderstorms with this front are likely to occur in the morning, before any on-track activity is scheduled. There may be a delay to starting practice as the track dries, or if showers arrive a little later than expected. But overall, the impact appears low. The rest of the weekend looks beautiful, with abundant sunshine and comfortable temperatures. 

By: Harris Cooley

Friday begins with a relatively deep westerly Low pressure system moving through the region bringing high winds and scattered rain. Another round of showers is expected to pass Saturday afternoon into the evening with gusty winds as well. High pressure moves in to the area by Sunday presenting a mostly clear race day with mild temperatures.

Friday and Saturday will likely be tough days on the track navigating through the intermittent rain and gusty winds. This could leave Sunday's winning strategy up to overall familiarity of the track rather than the ability to collect comparable track data in practice sessions and qualifying. A metric graphic is posted below...

By Doug Schneider

Beautiful weather is expected this weekend at VIR. If you have never been to one of the prettiest race courses in the country, this is a great year to go. High pressure will be over New England through the weekend, and extend southward along the East Coast. This will supply cooler than normal temperatures to VIR (the normal high is around 87), along with low dewpoints for comfortable humidity levels. There will be a gradual warming trend through the weekend, from low 80s on Friday to upper 80s by Sunday. Can't ask for better racing weather in southern Virginia in late August.