How far does a ball carry at T-Mobile Park?
T-Mobile Park is the Seattle Mariners home park in Seattle: a retractable-roof park at 10 ft, 401′ to center. Below is what moves fly balls here — elevation, temperature, humidity and wind — plus the current wind for the next game. Carry distances are model estimates and part of the Groundskeeper plan.
Next game conditions
No game at T-Mobile Park on the current slate. Today's wind for every park that is playing is on the wind carry today page.
Carry estimate
The carry range is The Cold Line's model estimate of how much today's wind and temperature add to or take away from a fly ball to center. Already a Groundskeeper member? Open the live weather board.
T-Mobile Park park facts
- Elevation
- 10 ft above sea level (27th highest of 30 MLB parks)
- Roof
- Retractable canopy, open sides
- Center-field bearing
- 49° — home plate faces northeast
- Fences (LF · LCF · CF · RCF · RF)
- 331′ · 368′ · 401′ · 357′ · 327′
- Wall heights (LF · CF · RF)
- 8′ · 8′ · 8′
- Surface
- Natural grass
Park notes: Retractable canopy (open-sided, no climate control); Natural grass under roof; Pitcher-friendly marine air.
What moves the ball at T-Mobile Park
Elevation
T-Mobile Park sits essentially at sea level (10 ft, 27th of 30 by elevation). Air density here is about as heavy as it gets in MLB, so elevation adds nothing — temperature and wind decide how the ball travels.
Temperature
With the roof open, warm air (less dense) helps carry and cold air hurts it, as at any outdoor park. With the roof closed, the bowl is climate-controlled and temperature drops out of the read.
Humidity
Humid air is slightly lighter than dry air, so higher humidity helps carry a little — the opposite of what most people expect. It is a minor factor next to temperature and wind.
Wind
Home plate faces northeast, so a wind out of the southwest blows straight out to center and helps carry, while a wind from the northeast blows in and knocks fly balls down. Cross-winds push the ball toward one line — at T-Mobile Park the shorter right-field corner (327′) is where a helping wind shows up first. The canopy has open sides, so some wind still reaches the field when it is covered.
T-Mobile Park carry questions
How far does a ball carry at T-Mobile Park?
T-Mobile Park sits essentially at sea level (10 ft, 27th of 30 by elevation). Air density here is about as heavy as it gets in MLB, so elevation adds nothing — temperature and wind decide how the ball travels. The Cold Line's game-by-game carry estimate (a model estimate, in feet) is part of the Groundskeeper plan.
Does wind affect home runs at T-Mobile Park?
Home plate faces northeast, so a wind out of the southwest blows straight out to center and helps carry, while a wind from the northeast blows in and knocks fly balls down. Cross-winds push the ball toward one line — at T-Mobile Park the shorter right-field corner (327′) is where a helping wind shows up first. The canopy has open sides, so some wind still reaches the field when it is covered.
Does T-Mobile Park have a roof?
T-Mobile Park has a retractable canopy with open sides; outside air still moves through the park when it is closed.
Where can I see today's wind at T-Mobile Park?
This page shows the current wind for the next game at T-Mobile Park. The Cold Line's live MLB weather board tracks wind, roof status and conditions for every park on the slate, and Groundskeeper members see the full carry card there.
More: Seattle Mariners weather · All MLB ballpark weather · MLB wind carry today