Station Name: TUOLUMNE R AB EARLY INTAKE NR MATHER CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 2,493 feet

Nearest Address:
Preston Falls Trail
Groveland, CA 95321
Tuolumne County

GPS Coordinates: 37.87936848, -119.947126

Nearby Water Temperatures

Cold Weather Advisory issued February 20 at 3:33AM PST until February 21 at 10:00AM PST by NWS Hanford CA

Effective: Fri February 20, 2026, 3:33 AM
Expires: Fri February 20, 2026, 10:00 AM

* WHAT...Low temperatures from to ten degrees with isolated locations reaching 5 degrees below zero above 6,000 feet of the Sierra Nevada. Low temperatures of 10 to 20 degrees in the Sierra Nevada below 6,000 feet into the adjacent foothills. * WHERE...Sierra Nevada and adjacent foothills. * WHEN...Until 10 AM PST Saturday. * IMPACTS...Dangerous frostbite possible on unprotected skin. Wind chills reaching well below zero degrees on Friday morning.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.

Cold Weather Advisory issued February 19 at 12:16PM PST until February 20 at 9:00AM PST by NWS Sacramento CA

Effective: Thu February 19, 2026, 12:16 PM
Expires: Fri February 20, 2026, 9:00 AM

* WHAT...Sub-freezing temperatures in the single digits to teens in the mountains with 20s to around 30 degrees in the foothills. * WHERE...Burney Basin / Eastern Shasta County, Motherlode, Mountains Southwestern Shasta County to Western Colusa County, Northeast Foothills, Shasta Lake Area / Northern Shasta County, West Slope Northern Sierra Nevada, and Western Plumas County/Lassen Park. * WHEN...From midnight tonight to 9 AM PST Friday. * IMPACTS...Very cold temperatures can lead to frostbite and hypothermia with prolonged exposure. This will especially impact those without power from the storm.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. If using a generator, please exercise safety. Keep pets indoors as much as possible. Make sure outdoor animals have a warm, dry shelter, food, and unfrozen water.

Freeze Warning issued February 19 at 12:16PM PST until February 20 at 9:00AM PST by NWS Sacramento CA

Effective: Thu February 19, 2026, 12:16 PM
Expires: Fri February 20, 2026, 9:00 AM

* WHAT...Sub-freezing temperatures of 28 to 32 degrees expected. * WHERE...Carquinez Strait and Delta and Northern San Joaquin Valley. * WHEN...From midnight tonight to 9 AM PST Friday. * IMPACTS...Frost and freeze conditions could kill crops and other sensitive vegetation.

Take steps now to protect tender plants from the cold.

Cold Weather Advisory issued February 20 at 9:38AM PST until February 21 at 10:00AM PST by NWS Hanford CA

Effective: Fri February 20, 2026, 9:38 AM
Expires: Fri February 20, 2026, 6:00 PM

* WHAT...Low temperatures from to ten degrees with isolated locations reaching 5 degrees below zero above 6,000 feet of the Sierra Nevada. Low temperatures of 10 to 20 degrees in the Sierra Nevada below 6,000 feet into the adjacent foothills. * WHERE...A portion of central California. * WHEN...Until 10 AM PST Saturday. * IMPACTS...Dangerous frostbite possible on unprotected skin. Wind chills reaching well below zero degrees on Friday morning.

Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.

Freeze Warning issued February 20 at 3:33AM PST until February 21 at 9:00AM PST by NWS Hanford CA

Effective: Fri February 20, 2026, 3:33 AM
Expires: Fri February 20, 2026, 10:00 AM

* WHAT...Sub-freezing temperatures as low as 28. * WHERE...San Joaquin Valley. * WHEN...Until 9 AM PST Saturday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

Take steps now to protect tender plants from the cold.