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Almost 4.5 million people are at extreme fire weather risk in California today. Over 14.3 million are at critical risk. This is almost half the population of California. The population of California is an estimated 39.6 million. Almost one third (27%) of the population of California is foreign born, the majority of whom would have arrived within recent decades. People wondered where hundreds of thousands of evacuees should go in California, but no one asks where the United States is putting over a million new legal permanent residents PER YEAR. Almost no one asks the impacts on the environment and the impacts on ability to evacuate in the event of an emergency. The United States has a foreign born population of 44.5 million of which almost half are US citizens (22 million foreign born US citizens vs 22.5 million foreign born non-citizens). There needs to be planning and debate, and not sneak through increases in population by Congress. Senate bills S386 and S2603 (Relief Act) are both attempts to increase numbers of lawful permanent residents (green cards) and must be stopped. S2603 does so directly, and S386 does so indirectly. How to contact your elected officials: https://www.usa.gov/elected-officials

CBS News warned last year: “Destructive California wildfires magnified by population and shifting climate, November 11, 2018, but this does not seem to have been followed by constructive policy changes: https://archive.li/2ZhkO

Today: “As winds that have driven a large wildfire in Northern California ease, firefighters in the southern part of the state are preparing for what forecasters expect to be one of the most significant wind events in years and the possibility it could spread flames from a fire burning west of Los Angeles“, VOA News, Oct 30, 5:06 am.https://www.voanews.com/usa/high-winds-boost-risk-spreading-southern-california-fire

From Weather.gov
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 300652

Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0152 AM CDT Wed Oct 30 2019

Valid 301200Z – 311200Z

…EXTREMELY CRITICAL FIRE WEATHER AREA FOR THE PENINSULAR AND
TRANSVERSE RANGES IN SOUTHERN CALIFORNIA…
…CRITICAL FIRE WEATHER AREA FOR THE PENINSULAR AND TRANSVERSE
RANGES IN SOUTHERN CALIFORNIA NORTHWARD INTO KERN COUNTY…
…CRITICAL FIRE WEATHER AREA FOR THE WESTERN SACRAMENTO VALLEY AND
THE NORTH BAY AREA MOUNTAINS…

…Synopsis…
Strong high pressure over the Central Rockies and lower pressure off
the California coast will lead to continued offshore flow across
most of California. This offshore flow will weaken somewhat during
the afternoon hours as diurnal warming across the Great Basin
decreases surface pressure and relaxes the gradient. However, very
cold temperatures are expected in the Great Basin and central
Rockies again tonight which will lead to some strengthening of the
pressure gradient and possibly a return to extremely critical fire
weather conditions.

…Northern California…
Widespread critical fire weather conditions (20-30 mph sustained
winds and RH 8-15 percent) are ongoing in northern California early
this morning with a few sites reporting locally extremely critical
conditions (primarily at high elevations). Similar conditions are
expected through at least the morning hours today before winds start
to weaken. Elevated winds are expected to persist through most of
the day with relative humidity in the 5 to 12 percent range.

…Southern California…
The gradient is starting to strengthen early this morning with the
LAX-DAG gradient currently up to around 3.5mb as of 06Z. Therefore,
strengthening offshore flow is expected to begin in the next few
hours and strengthen rapidly toward morning. The gradient is
expected to peak around 15Z at or above 10mb. This record or near
record October offshore gradient, combined with some upper-level
support will lead to very strong sustained winds of 30 to 50 mph
with gusts 80+ mph. In addition, relative humidity will be in the 5
to 10 percent range.

…The Lower Colorado River Valley…
Northerly winds of 20 to 30 mph with gusts to 45 mph are expected in
the Colorado River Valley today with relative humidity in the 10 to
15 percent range
. Most fuels across the region are irrigated which
will significantly lower the fire weather threat, but an elevated
fire weather area is justified given the solid critical
meteorological conditions.

..Bentley.. 10/30/2019

…Please see http://www.spc.noaa.gov/fire for graphic product…
https://www.spc.noaa.gov/products/fire_wx/fwdy1.html

https://www.census.gov/quickfacts/fact/table/CA/POP645217
https://www.census.gov/popclock/
https://www.dhs.gov/immigration-statistics/yearbook/2017/table1

Destructive California wildfires magnified by population and shifting climate BY JEFF BERARDELLI NOVEMBER 11, 2018 / 10:55 PM / CBS NEWS https://archive.li/2ZhkO





Snapshot : The wildland-urban interface (WUI), where homes meet or intermingle with undeveloped forests and grasslands, is a critical area for wildfire and natural resource management. Both the number of homes in the WUI and total footprint of the WUI grew rapidly from 1990 to 2010, with broad implications for wildfire management and other natural resource management issues.
Principal Investigators(s) :
Mockrin, Miranda H.
 Research Station : Northern Research Station (NRS)
Year : 2018
Highlight ID : 1447
Rapid Wildland-Urban Interface Growth Increases Wildfire Challenges
Summary
Homes and forests intersect in the WUI, a geography that now includes one-third of all homes in the United States within just 10 percent of the nation’s land area. For the first time, scientists with the USDA Forest Service and the University of Wisconsin-Madison have been able to track change in the nation’s WUI over a 20-year period, revealing that new WUI area expanded by more than 46 million acres, an area that is larger than Washington State.

Wildland-urban interface is an area close to or intermingled with forests and grasslands, with at least one home per 40 acres. Scientists distinguish between “intermix” WUI, in which housing and vegetation intermingle, and “interface” WUI, where housing is near a large area of wildland vegetation.

From 1990 to 2010, both types of WUI grew rapidly, increasing from 30.8 to 43.4 million homes (41 percent growth) and expanding in area from 143,568,227 acres to 190,271,144 acres (33 percent growth).

Ninety-seven percent of new WUI areas were created by housing development, not an increase in wildland vegetation.

The greatest expansion of WUI area occurred in the East, with the highest gains in houses and people in the South and Southwest.
https://www.fs.fed.us/research/highlights/highlights_display.php?in_high_id=1447

https://www.fs.usda.gov/treesearch/pubs/55817