President Biden later approved this request on Friday. Newsom also has requested federal assistance in anticipation of the state's need to respond to the extreme storms. Gavin Newsom proclaimed a state of emergency in 21 counties. "Lately we've had snow levels as low as 1500 feet, but since we have warmer air, we're seeing snow in elevation as high as 7,000 feet and above," Ochs told NPR.Įarlier this week, California Gov. The storm was warmer, creating a dangerous combination of excessive rain and snowmelt in some areas that could pose serious risk of flooding. The second is expected to make landfall on Monday afternoon, according to Brian Ochs, a meteorologist for the National Weather Service based in Hanford, Calif. The severe weather is the result of back-to-back atmospheric rivers, the first of which arrived on Thursday. In northern California, parts of Palo Alto in the Bay Area saw 10 inches of downpour. #montereycounty #alwaysreadyalwaysthere /VKsKbzsXJ0- The California National Guard March 11, 2023Īs of Saturday afternoon, more than 37,000 households were without power, mainly in Monterey County, according to utility companies' reports tracked by PowerOutage.US.Ĭentral California saw flash flooding, with King City in Monterey County receiving nearly 13 inches of rainfall. Our results also suggest that temperature forcing may generate greater drought stress affecting soils and stream flows than can be estimated by variability in precipitation alone.Cal Guard Soldiers have supported first responders in 56 rescues near the Pajaro river in Monterey County. Our results suggest that in arid environments characterized by high topo-climatic variability, land and water managers need indicators of local watershed hydrology response to complement regional temperature and precipitation estimates. ![]() Hydrologic variability within a single river basin demonstrated at the scale of subwatersheds may prove an important consideration for water managers in the face of climate change. For both high- and low-rainfall scenarios, by the close of this century warming is projected to amplify late-season climatic water deficit (a measure of drought stress on soils) by 8% to 21%. ![]() Temperature forcing increases the variability of modeled runoff, recharge, and stream discharge, and shifts hydrologic cycle timing. Precipitation projections for the 21st century vary between GCMs (ranging from 2 to 15% wetter than the 20th-century average). By the last 30 years of this century, North Bay scenarios project average minimum temperatures to increase by 1.0 ☌ to 3.1 ☌ and average maximum temperatures to increase by 2.1 ☌ to 3.4 ☌ (in comparison to conditions experienced over the last 30 years, 1981–2010). Historical climate patterns show that Marin’s coastal regions are typically on the order of 2 ☌ cooler and receive five percent more precipitation compared to the inland valleys of Sonoma and Napa because of marine influences and local topography. We then used the BCM to estimate hydrologic response to climate change for four scenarios spanning this century (2000–2100). We downscaled historical and projected precipitation and air temperature values derived from weather stations and global General Circulation Models (GCMs) to a spatial scale of 270 m. The BCM calculates water balance components, including runoff, recharge, evapotranspiration, soil moisture, and stream flow, based on climate, topography, soils and underlying geology, and the solar-driven energy balance. We modeled the hydrology of basins draining into the northern portion of the San Francisco Bay Estuary (North San Pablo Bay) using a regional water balance model (Basin Characterization Model BCM) to estimate potential effects of climate change at the watershed scale.
0 Comments
Leave a Reply. |