Station Name: MAXWELL C NR POPE VALLEY CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 551 feet

Nearest Address:
2458 Dollarhide Rd
Saint Helena, CA 94574
Napa County

GPS Coordinates: 38.61460278, -122.3459917

Nearby Water Temperatures

Extreme Cold Warning issued February 18 at 11:25PM PST until February 20 at 9:00AM PST by NWS San Francisco CA

Effective: Wed February 18, 2026, 11:25 PM
Expires: Thu February 19, 2026, 3:00 PM

* WHAT...Very cold conditions with sub-freezing temperatures in the mid-20s to low-30s expected. * WHERE...The East Bay Hills and Valleys, Interior Monterey County and the Santa Lucia Range, Most of San Benito County and the Cholame Hills in Southeast Monterey County, North Bay Interior Mountains, North Bay Interior Valleys, Eastern Santa Clara Hills, and Southern Salinas Valley/Arroyo Seco and Lake San Antonio. * WHEN...From 1 AM to 9 AM PST Friday. * IMPACTS...Cold conditions will be hazardous to sensitive populations such as unhoused individuals. Cold conditions may damage or kill sensitive crops, plants, and vegetation if appropriate precautions are not taken. Prolonged exposure to the cold conditions will lead to hypothermia for people, pets, and livestock.

Ensure portable heaters are working properly and are used correctly to avoid sparking a fire indoors. Do not use generators or grills inside as carbon monoxide poisoning can result. Check with your local, city, or county officials for information on available warming centers. Be sure to dress in layers if outdoors. Make sure that pets and livestock have adequate food, unfrozen water, and warmth. Cover or tend to sensitive crops, plants, and vegetation.

TEST Tsunami Warning issued February 19 at 9:46AM PST until February 19 at 10:46AM PST by NWS National Tsunami Warning Center

This is a only a test. A national exercise is being conducted. This is only a test.

Effective: Thu February 19, 2026, 9:46 AM
Expires: Thu February 19, 2026, 10:46 AM

PZZ530-531-CAZ043-354-362-366-367-552-087-549-550-349-350- 340>342-346-529-530-006-505-506-508-509-109-104-103-101-ORZ021- 022-103-101-102-WAZ001-201-310-311-324>326-330>333-BCZ098- 099-096-097-AKZ328>332-323-324-326-327-318>322-325-317-731- 735-721>723-725-728-729-771>773-781-785-787-795-791-191846- /T.NEW.PAAQ.TS.W.9004.260219T1746Z-260219T1846Z/ Alaska, British Columbia, Washington, Oregon and California coastal areas ...THIS_MESSAGE_IS_FOR_TEST_PURPOSES_ONLY... ...THIS IS A TEST TO DETERMINE TRANSMISSION TIMES INVOLVED IN THE DISSEMINATION OF TSUNAMI INFORMATION... RESPONSES ARE REQUIRED FROM --------------------------- * All Coastal Weather Forecast Offices in Alaska, Washington, Oregon and California * USAF 11th Rescue Coordination Center at Elmendorf AFB * California, Oregon, Washington and Alaska State Warning Points * Emergency Management British Columbia * The Pacific Storm Prediction Centre in British Columbia * Joint Typhoon Warning Center in Hawaii * U.S. Coast Guard 11th, 13th, 17th District Offices * U.S. Coast Guard Kodiak COMMSTA and CAMSPAC Point Reyes, CA * Canadian Coast Guard MCTS COMOX and/or Victoria * FAA Regional Operations Center in Seattle * All Pacific Coast Tsunamiready Community Warning Points. RESPONSES SHOULD INCLUDE ------------------------ * Time-of-receipt * Agency name * Email address * Phone number Weather Service Offices should respond in accordance with local directives. All others should reply by one of the available methods below. SEND RESPONSE BY ---------------- * Email address - ntwc@noaa.gov * AFTN address - PAAQYQYX * AWIPS - TMA * Fax - 907-745-6071 ...THIS_MESSAGE_IS_FOR_TEST_PURPOSES_ONLY... ...THIS IS A TEST TO DETERMINE TRANSMISSION TIMES INVOLVED IN THE DISSEMINATION OF TSUNAMI INFORMATION...

Wind Advisory issued February 19 at 3:24AM PST until February 19 at 10:00PM PST by NWS Sacramento CA

Effective: Thu February 19, 2026, 3:24 AM
Expires: Thu February 19, 2026, 10:00 PM

* WHAT...South winds 10 to 20 mph with gusts of 35 to 45 mph expected. * WHERE...Sacramento Valley. * WHEN...Until 10 PM PST this evening. * IMPACTS...Strongest winds will follow ongoing precipitation during the morning hours. A few gusts up to 50 mph can't be ruled out in the southern Sacramento Valley. * ADDITIONAL DETAILS...Strongest winds will be along and behind precipitation during the morning hours.

Winds this strong can make driving difficult, especially for high profile vehicles. Use extra caution.

High Surf Advisory issued February 18 at 2:21PM PST until February 20 at 9:00AM PST by NWS San Francisco CA

Effective: Wed February 18, 2026, 2:21 PM
Expires: Thu February 19, 2026, 9:00 AM

* WHAT...Large breaking waves of 18 to 22 feet, with continuing increased risk of sneaker waves and strong rip currents. * WHERE...Pacific Coast beaches. * WHEN...Until 9 AM PST Friday. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion can be expected. Sneaker waves can sweep across the shoreline without warning, pulling people into the sea from rocks, jetties and beaches. Large breaking waves can overpower swimmers resulting in significant physical injury and increase the risk of drowning.

Swimmers should remain out of the water due to dangerous surf conditions. Stay off of jetties, piers, rocks, and other waterside infrastructure. Remain out of the water to avoid hazardous surf and NEVER turn your back on the ocean. Monitor local weather, surf and tide forecasts at www.weather.gov/mtr.

Cold Weather Advisory issued February 18 at 11:25PM PST until February 20 at 9:00AM PST by NWS San Francisco CA

Effective: Wed February 18, 2026, 11:25 PM
Expires: Thu February 19, 2026, 3:00 PM

* WHAT...Cold conditions with temperatures in the low-to-mid 30s expected. * WHERE...The Marin Hills, Western Sonoma County Hills, Northern Monterey Bay, The Santa Cruz Mountains, The Santa Clara Valley, Coastal North Bay Including Point Reyes National Seashore, San Francisco Bay Shoreline, and Northern Salinas Valley/Hollister Valley and Carmel Valley. * WHEN...From 1 AM to 9 AM PST Friday. * IMPACTS...Cold conditions will be hazardous to sensitive populations such as unhoused individuals. Prolonged exposure to the cold conditions will lead to hypothermia for people, pets, and livestock. Cold conditions may damage or kill sensitive crops, plants, and vegetation if appropriate precautions are not taken.

Ensure portable heaters are working properly and are used correctly to avoid sparking a fire indoors. Do not use generators or grills inside as carbon monoxide poisoning can result. Check with your local, city, or county officials for information on available warming centers. Be sure to dress in layers if outdoors. Make sure that pets and livestock have adequate food, unfrozen water, and warmth. Cover or tend to sensitive crops, plants, and vegetation.