Author Topic: Hurricane Hilary  (Read 8016 times)

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Offline Wrightwood

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Offline Wrightwood

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Re: Hurricane Hilary
« Reply #1 on: Aug 18, 23, 01:48:27 PM »

Offline Tursiops

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Re: Hurricane Hilary
« Reply #2 on: Aug 18, 23, 02:29:58 PM »
Free sand and sandbags are available at our fire station.

Offline Wrightwood

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Re: Hurricane Hilary
« Reply #3 on: Aug 18, 23, 08:34:21 PM »
San Bernardino County Mountains-
822 PM PDT Fri Aug 18 2023

...TROPICAL STORM WARNING IN EFFECT...

A Tropical Storm Warning means tropical storm-force winds are
expected somewhere within this area within the next 36 hours

* LOCATIONS AFFECTED
- Crestline
- Lake Arrowhead
- Big Bear City
- Wrightwood

* WIND
- LATEST LOCAL FORECAST: Tropical storm force winds remain
possible
- Peak Wind Forecast: 25-35 mph with gusts to 50 mph

- THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST
UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for wind 39
to 57 mph
- The wind threat has remained nearly steady from the
previous assessment.
- PLAN: Plan for hazardous wind of equivalent tropical storm
force.
- PREPARE: Efforts to protect property should now be
underway. Prepare for limited wind damage.
- ACT: Act now to complete preparations before the wind
becomes hazardous.

- POTENTIAL IMPACTS: Limited
- Damage to porches, awnings, carports, sheds, and unanchored
mobile homes. Unsecured lightweight objects blown about.
- Many large tree limbs broken off. A few trees snapped or
uprooted, but with greater numbers in places where trees
are shallow rooted, especially in coastal and valley
locations that don't typically experience strong winds.
Some fences and roadway signs blown over.
- A few roads impassable from debris, particularly within
urban or heavily wooded places. Hazardous driving
conditions on bridges and other elevated roadways.
- Scattered power and communications outages.

* FLOODING RAIN
- LATEST LOCAL FORECAST: Flood Watch is in effect
- Peak Rainfall Amounts: 4-8 inches, with locally higher
amounts

- THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST
UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for extreme
flooding rain
- The flooding rain threat has remained nearly steady from
the previous assessment.
- PLAN: Emergency plans should include the potential for
extreme flooding from heavy rain. Evacuations and rescues
are likely.
- PREPARE: Urgently consider protective actions from extreme
and widespread rainfall flooding.
- ACT: Heed any flood watches and warnings. Failure to take
action will likely result in serious injury or loss of life.

- POTENTIAL IMPACTS: Devastating to Catastrophic
- Extreme rainfall flooding may prompt numerous evacuations
and rescues.
- Rivers and tributaries may overwhelmingly overflow their
banks in many places with deep moving water. Small streams,
creeks, canals, arroyos, and ditches may become raging
rivers. In mountain areas, deadly runoff may rage down
valleys while increasing susceptibility to rockslides and
mudslides. Flood control systems and barriers may become
stressed.
- Flood waters can enter numerous structures within multiple
communities, some structures becoming uninhabitable or
washed away. Numerous places where flood waters may cover
escape routes. Streets and parking lots become rivers of
raging water with underpasses submerged. Driving conditions
become very dangerous. Numerous road and bridge closures
with some weakened or washed out.

* TORNADO
- LATEST LOCAL FORECAST:
- Situation is somewhat favorable for tornadoes

- THREAT TO LIFE AND PROPERTY THAT INCLUDES TYPICAL FORECAST
UNCERTAINTY IN TRACK, SIZE AND INTENSITY: Potential for a few
tornadoes
- The tornado threat has remained nearly steady from the
previous assessment.
- PLAN: Emergency plans should include the potential for a
few tornadoes.
- PREPARE: If your shelter is particularly vulnerable to
tornadoes, prepare to relocate to safe shelter before
hazardous weather arrives.
- ACT: If a tornado warning is issued, be ready to shelter
quickly.

- POTENTIAL IMPACTS: Limited
- The occurrence of isolated tornadoes can hinder the
execution of emergency plans during tropical events.
- A few places may experience tornado damage, along with
power and communications disruptions.
- Locations could realize roofs peeled off buildings,
chimneys toppled, mobile homes pushed off foundations or
overturned, large tree tops and branches snapped off,
shallow-rooted trees knocked over, moving vehicles blown
off roads, and boats pulled from moorings.

* FOR MORE INFORMATION:
- sbcfire.org/oes

Offline Wrightwood

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Re: Hurricane Hilary
« Reply #4 on: Aug 19, 23, 09:58:15 AM »

Offline Wrightwood

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Re: Hurricane Hilary
« Reply #5 on: Aug 19, 23, 11:35:55 AM »
Which way do hurricanes/tropical cyclones spin?

North of the Earth's equator, hurricanes spin counterclockwise, when looking down from above the hurricane. South of the equator, hurricanes spin clockwise. The reason for this difference is the earth's rotation, which gives rise to what is known as the Coriolis acceleration, balanced by the low pressure at the center of the hurricane, typhoon, or cyclone. In fact, this spin direction of hurricanes is known as "cyclonic". The opposite spin direction is known as "anti-cyclonic". Cyclonic-spinning weather patterns have low pressure at the center, while anti-cyclonic weather patterns have high pressure at the center.

https://www.openhazards.com/faq/hurricanes-tropical-cyclones-and-typhoons/which-way-do-hurricanestropical-cyclones-spin

Offline Tursiops

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Re: Hurricane Hilary -CERT FRS Request
« Reply #6 on: Aug 20, 23, 09:17:52 AM »
CERT Announcement Wrightwood
FRS radio Ch 3 is designated for CERT only for communication to CERT members.
Please notify your children ...DO NOT PLAY on Channel 3.
Thank you

Offline in my dreams

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Re: Hurricane Hilary
« Reply #7 on: Aug 20, 23, 08:22:49 PM »
Does anyone have any rain totals so far??

I'll bet they're AMAZING!!!!!

And thank our lucky stars there is no wind (may it stay that way!!!!!)!

Offline WDB123

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Re: Hurricane Hilary
« Reply #8 on: Aug 21, 23, 06:32:07 AM »
 If you click the live weather link at the top of the forum page you can see a weather station, I saw at least 6.5 inches when I looked yesterday. My house in Phelan only got a mere 4.36 inches with a top wind speed of 35 mph.

Offline SteamPunked

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Re: Hurricane Hilary
« Reply #9 on: Aug 21, 23, 06:32:33 AM »
Waking up this morning I have 9.58 inches from my rain gauge near Willow and the Country Club.

Offline WDB123

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Re: Hurricane Hilary
« Reply #10 on: Aug 21, 23, 06:36:52 AM »
That is way past too much rain.

Offline Wrightwood

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Re: Hurricane Hilary
« Reply #11 on: Aug 21, 23, 07:30:46 AM »
At the base of Heath Canyon the Wrightwoodcalif.com weather station recorded 6.83" of rainfall for the storm

8/20/23   6.76
8/21/23   0.07

Offline in my dreams

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Re: Hurricane Hilary
« Reply #12 on: Aug 21, 23, 07:37:02 AM »
SteamPunked, WOW that's a lot of rain!!!!

OMG WDB123, thanks! I look at the Robert W weather link and never noticed that one   :o

Thanks,  Wrightwood!


Offline JDRichlen

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Re: Hurricane Hilary
« Reply #13 on: Aug 21, 23, 08:02:57 AM »
My Acurite weather station on Mountain View that reports to weather underground is showing a total of 8.86".  Absolutely mind boggling amount of rain.  Thankfully the wind was light.

Offline Elk

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Re: Hurricane Hilary
« Reply #14 on: Aug 21, 23, 10:28:40 AM »
NWS Big Pines reporting 6.23" of rain for the storm.

NWS Valyermo reporting 5.65" rain for the storm.