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Canning at about 20 ft in Seattle
Good news: at about 20 ft, Seattle sits inside the 0–1,000 ft band — the very band every tested recipe was written for. Water-bath times exactly as printed, 10 lb on a weighted gauge, 11 lb on a dial.
SEATTLE, WASHINGTON
- ELEVATION
- ≈20 FT
- WATER BATH
- +0 MIN
- DIAL GAUGE
- 11 LB
- WEIGHTED
- 10 LB
Adjustments use the 0–1,000 ft band, so small elevation differences nearby rarely change your numbers.
canningdates.com
canningdates.com — Seattle, WA at about 20 ft, from the published USDA adjustment bands. Low-acid foods must be pressure canned.
Seattle at about 20 ft
Seattle's hills feel steep on a bicycle, but none of them matter to a canner: at about 20 ft, with even the famous viewpoints only modestly higher, the whole city cans deep inside the 0–1,000 ft band.
Adjustments come in bands, not curves: everything in the 0–1,000 ft band shares one answer — the recipe exactly as tested. A hill on one side of Seattle or a valley on the other changes nothing here.
As for the number itself: Seattle's elevation was checked against the USGS elevation service, starting from the NOAA weather-station inventory (SEATTLE BOEING FLD). Elevation shifts block to block in any town, but the bands are wide on purpose — a station a few miles out almost never changes the row.
Not your kitchen? The altitude lookup turns any ZIP or town into a card like this one. Recipe already in hand? The processing time adjuster takes your recipe's minutes and applies Seattle's band for you.
Frequently asked questions
Do I need to adjust canning recipes in Seattle?
No. At about 20 ft, Seattle sits inside the 0–1,000 ft band — the elevation range every tested recipe was written for. The minutes printed on the recipe card are your minutes, exactly as they stand.
What pressure does a canner run at in Seattle?
The tested base settings: 10 lb on a weighted gauge, 11 lb on a dial gauge. No altitude correction applies until a kitchen climbs out of the 0–1,000 ft band, and Seattle is comfortably inside it.
What if I can somewhere higher — a cabin, a family place in the hills?
Then the bands take over: above the 0–1,000 ft band, a water bath owes extra minutes and pressure settings climb. Look the town up before you pack the jars — the numbers follow the ground, not the kitchen the recipe was written in.
Why do recipes talk about altitude at all if Seattle needs no changes?
Because water boils cooler as elevation rises, and a cooler bath needs more time to deliver the tested heat. At about 20 ft, the boiling point is close enough to the tested conditions that no correction is needed — that's exactly what the 0–1,000 ft band means.