Bit of a timing shift with rain in the #GPStPete forecast…looks like arrival as early as this afternoon…that will now put the bulk of rain into the overnight hours and open up Saturday afternoon to drier conditions. Sunday continues to look good. #FirestoneGP #IndyCar

Wed update: precip timing has been trending later since initial forecast (slipping right)…so Friday looking better with higher rain chances now overnight into Sat morning, and chance for isolated storms into afternoon. Sunday still looks ok, but will con’t to monitor. #FirestoneGP #IndyCar

Initial #FirestoneGP forecast: cold front yesterday, so it’s a dry/cool start to the week, then warming. Rain chances re-enter picture Friday. Question on timing and whether some showers can linger into Saturday (or beyond)…will just need to keep an eye on how it evolves thru the week. #GPSTPETE

#Rolex24 forecast: weather looks good overall, only items I’d note is a very slight chance for a brief light shower/sprinkle Sat afternoon…and wind change over the race duration from north to south with breezy conditions Sunday #IMSA

Here’s an updated #Roar24 forecast: freeze warning in effect til 9 am Friday…warmer Saturday…windy conditions Sunday and trending a little wetter so added possibility for some scattered showers in the area #Rolex24 #Daytona #IMSA

This one serves as my preseason warm-up as well: but if you’re headed to Roar Before the #Rolex24 this weekend, I’d prep for rainshowers Wed-early Thu..then dry Fri-Sun with morning temps in 30s/low 40s and highs in mid-50s/60s.

I dont know if I’ve got any #AvGeek followers over here, but here’s some pics from the air and space museum in Le Bourget just outside Paris…2(!) Concorde (including the “eclipse chaser”) nose-to-nose and a lot of unique one-off prototypes. Worth a side-quest if you’re ever in the region.

Weather for Indycar test tomorrow on IMS road course: sunny, mild temps, very light winds

I have 4 tickets to Indycar Nashville today we can’t use. Would love them to go to someone who can use them. @booksnburnouts.bsky.social @indycarweatherman.bsky.social

Here’s your #MusicCityGP raceday weather briefing: a bit more cloud cover today, so ambient/track temps should be just slightly cooler than Saturday. Dewpoint temps (good indicator of humidity) in low-50s (that’s good)..so ‘it’s a dry heat’. Light winds from north-northeast. #IndyCar #INDYNXT

No major forecast changes to make moving into the last race weekend of the #IndyCar season: upper-80s, dry, low humidity, northeasterly winds…and very similar conditions both days #MusicCityGP #Nashville

Midweek #MusicCityGP forecast update: still looks good. Warm but dry weekend. Upper-80s, but comfortable humidity levels..so no “heat index” to add on top of these temps. Still have one eye on Sunday rain chances…but not a threat for now. #IndyCar #INDYNXT

Early look at #MusicCityGP forecast: plan for mid-upper 80s. Humidity not too bad. Initial look appears dry, with better rain chances south…but way too early to lock that part in. #IndyCar

Your raceday weather briefing for the #SnapOn250 at #MilwaukeeMile: cool northwesterly flow continues today…expect ambient temps near 70° for the #IndyCar race…breezy at times. Post-race: a few isolated showers may pop-up early evening, just something to be aware of for those still in the area late

Here’s your Saturday morning weather brief: forecast tracking as previously described…early AM line of broken showers has moved through…clouds on back-edge should be lifting in next hour or so. West-northwesterly winds should get breezy by qualifying. #IndyCar

Wasn’t tracking…thanks!!

No major forecast changes: front moves across Wisconsin Friday…won’t have too much moisture to work with but best shot for shower is overnight/early Sat…worth monitoring due to that early schedule for the first practice session. Sunday still the cooler of the two days. #IndyCar #MilwaukeeMile

Early look at the #MilwaukeeMile forecast: some rain to start the week then a shift to a drier pattern by Wed. Keeping an eye on a weak front late Friday with some potential showers…but for now Sat-Sun looks dry with great temps #IndyCar

Heat cranks up today at #PortlandGP: Sat evening final practice hit 88° amb/117° track. That’s close to where we’ll start the #IndyCar GP today at mid-day (at least for ambient). Other races: INDY NXT 75-80° this morning; USF Pro 2000 & USF2000 94-96° later today.

No major #PortlandGP forecast changes…was 82° Friday, warmer today, still expecting mid-90s Sunday. Earlier start time on Sunday will help #IndyCar avoid peak heat window…but a couple USF Pro Championship series races follow the GP and will be approaching the max temp that afternoon.

Initial outlook to start the week still looks pretty good, so minor tweaks only to #PortlandGP forecast: yesterday’s showers have moved thru, lingering clouds early today w/mid-70s..then progressively warmer til mid-90s Sunday (upper-90s Monday!)..hydrate for raceday #IndyCar

Here’s a first look at the #PortlandGP forecast: cloudy/showery weather Wed-early Thu..then dry but heating up Fri-Sun. Raceday temps potentially 10° above seasonal norms for early August. Humidity looks ok, so not expecting an excessive heat index to add on top of these temps. #IndyCar

Current satellite loop…you can see the fog/stratus clouds walking back up Salinas Valley as it burns off…it’s getting there, just takes time #IndyCar

Here’s today’s #JavaHouseGP forecast: similar to last couple days, mid-60s at start, clouds decreasing, winds increasing. If you’re wondering if moving warm-up from this morning to yesterday was the right call..it was..regional airports reporting ceilings 500-700’ again this morning #IndyCar

This is a pro-actively smart decision

Nothing new with the forecast since previous updates…right now clouds are overcast between 400-700 ft with visibility between 2-3 miles…some patches where it’s worse…but everything should be noticeably improved by the time we get to #JavaHouseGP qualifying #IndyCar

🔭 Spotter guides for #JavaHouseGP #INDYCAR #INDYNXT are up

I really don’t have any major changes to this forecast…only potential impact is possible low ceilings/visibility in morning…maybe some patchy light mist/drizzle in spots. Temps remain mild throughout. Winds should pick up each afternoon. #IndyCar

This is a great question: so the general rule for the tire safety limit is ambient temp + track temp > 100°…since the track retains heat, as long as amb temp is 50+°, the track temp will also be 50+°…so it’s good. When amb temps are < 50 then we have to hope the track temp can make up the difference

Here’s the Laguna Seca forecast for #IndyCar this weekend: no surprises in this one. 50s to mid-60s. Breezy in afternoon. Only potential impact is extent of low-level marine layer clouds in early AM..could get slight delay to early sessions (i.e. prac 2, warm-up), if conditions are right.

7 am radar check: forecast on track with rain ending. True back edge of system is still dropping thru Georgian Bay..so a couple small blips on radar to watch…may get some drops out of low clouds as they pass through…but heavy/steady rain is done. No lake breeze today..it’ll remain a north wind

Here’s your Saturday #IndyTO weather: should be a little warmer today…we’ll see if we can get to 80 before clouds move in later…still looks like rain moves in late tonight, but exiting by early Sunday morning…so dry race expected Sunday #IndyCar

Friday #IndyTO weather brief: great conditions today..north wind this morning but should get a weak lake breeze by #IndyCar practice this afternoon. Sat looks good too. Still keeping an eye on next rain chance late Sat, but for now looks like everything departs by early Sun morning.

Agreed…and what potentially lingers looks pretty isolated…so odds of a dry race Sunday appear to be pretty good (disappointing some I’m sure 😂)

WED UPDATE: near 90° today in Toronto..cold front Thu, with rain exiting early PM..sets up exceptional weather Fri and Sat. Shifted timing of next system a little to the left..so added slight chance shower late Sat, with Sun rain chances favoring overnight/early AM for now #IndyTo #IndyCar

For your planning considerations, an early look at #IndyTO weather: week starts with hot/humid temps..then front on Thursday would break the heat..and Fri-Sat would be exceptional. Question mark for now is timing/strength of possible system Sunday..I’ll keep you updated as we get closer #IndyCar

Preview for Race 2 weather at Iowa Speedway tomorrow: a little warmer tomorrow afternoon, but with an earlier green flag time temps should actually be pretty similar to Race 1. Wind shift to the southwest…but not as breezy as today. #IndyCar

Saturday #IndyCar weather: following yesterday’s rain, some patchy areas of dense fog have set up, mainly east of Des Moines…should burn off around sunrise…then transition to mostly sunny conditions with temps maxing out in low 80s. Northwest winds for the race.

Yep. Per INDYCAR: RACE CONTROL: Due to inclement weather, all remaining track activity today is canceled and will resume tomorrow. An updated schedule will be available shortly.

Sounds like we’re finished with track activity at Iowa today…and given the current radar, seems like a prudent decision….

New current situation. We’ve been moved back from the glass and the wind has changed directions. And now big rain hitting. Getting tough to see back stretch from the Suite Building.

Current situation.

Tornado warned storm passing just west of Iowa Speedway…it’s close…hopefully everyone is sheltered/safe

Tornado watch is valid for the area til 8pm local (CT)…though for the time being activity remains west of the Speedway…it’s starting to ramp up again as we’re into that afternoon window for the second round of storms

Friday AM update: the overnight storms are mostly through..not sure how much rain they got at the track, but Des Moines airport recorded 1.7” (and a 74 mph wind gust 😬)..minus a stray cell, we’re entering the gap I mentioned in the forecast..til round 2 storms build back in this afternoon

Don’t have much to change to the forecast as we head into Friday…I still see it as I described yesterday…seems pretty likely we’ll get some storms overnight/Friday morning…then I think radar settles down before becoming more active again late afternoon. I’ll have another update in the morning!

Got a request for an #IMSA forecast this weekend, so here’s a little bonus north-of-the-border weather: looks good Fri-Sat, then front approaches Sunday…for now think timing for any storms/showers is early afternoon…so within the race window as potential impact

Wed update: Friday still not great looking..but seems like 2 windows of storm activity (morning & evening)..then a ‘drier’ afternoon window, so wouldn’t call it a washout day just yet. Had to add pop-up storm chance to Sat, looks like a weak impulse follows after front exits. Sunday still dry.

A probably ‘too early’ look ahead to the Iowa Speedway forecast: key event to watch is timing of front late week…for now, looks like it moves through late Fri…if that holds it would open up Sat-Sun to sunny/dry conditions. Temps in 80s. #IndyCar #INDYNXT

It’s #Honda200 raceday! Today’s weather story looks a lot like yesterday’s…similar temps, mostly sunny skies, and a southwest wind…though should be a little bit breezier today. #MidOhio #IndyCar