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Special Weather Statement

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avatar Flood Watch
June 05, 2010 01:04PM
FLOOD WATCH
NATIONAL WEATHER SERVICE HANFORD CA
900 AM PDT SAT JUN 5 2010

CAZ096-060000-
/O.CON.KHNX.FA.A.0001.100606T0400Z-100607T1600Z/
/00000.0.SM.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SIERRA NEVADA FROM YOSEMITE TO KINGS CANYON-
INCLUDING THE CITIES OF...SHAVER LAKE...YOSEMITE VALLEY
900 AM PDT SAT JUN 5 2010

...FLOOD WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH MONDAY
MORNING FOR THE YOSEMITE VALLEY IN YOSEMITE NATIONAL PARK...

THE NATIONAL WEATHER SERVICE IN HANFORD CONTINUES A

* FLOOD WATCH SPECIFICALLY FOR THE YOSEMITE VALLEY IN YOSEMITE
NATIONAL PARK.

* FROM THIS EVENING THROUGH MONDAY MORNING.

* ABOVE NORMAL TEMPERATURES THIS WEEKEND COMBINED WITH MELTING
SNOW OVER THE HIGHER ELEVATIONS WILL CREATE RISES IN WATER
LEVELS ALONG THE MERCED RIVER IN YOSEMITE NATIONAL PARK DURING
THE NEXT SEVERAL NIGHTS. THE MERCED RIVER AT POHONO BRIDGE IS
EXPECTED TO CREST NEAR FLOOD STAGE EARLY SUNDAY MORNING THEN
PEAK JUST ABOVE FLOOD STAGE EARLY MONDAY MORNING AND PROBABLY
AGAIN EARLY TUESDAY MORNING.

* EVEN WHEN THE UPPER MERCED RIVER REMAINS BELOW FLOOD STAGE...
THERE ARE DANGERS IMPOSED BY THE HIGH WATER LEVELS AND THE
SWIFT COLD CURRENT.

* RESIDENTS...CAMPERS AND HIKERS SHOULD CLOSELY MONITOR WATER
LEVELS ALONG THE UPPER MERCED RIVER AND HEED THE ADVICE OF PARK
OFFICIALS WHEN AND IF EVACUATIONS BECOME NECESSARY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLOOD WATCH MEANS THERE IS A POTENTIAL FOR FLOODING BASED ON
CURRENT FORECASTS. YOU SHOULD MONITOR LATER FORECASTS AND BE
ALERT FOR POSSIBLE FLOOD WARNINGS. THOSE LIVING IN AREAS PRONE TO
FLOODING SHOULD BE PREPARED TO TAKE ACTION SHOULD FLOODING
DEVELOP.

&&

$$

MOLINA
avatar Special Weather Statement
June 05, 2010 01:05PM
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA
410 PM PDT FRI JUN 4 2010

CAZ089>097-052300-
WEST CENTRAL SAN JOAQUIN VALLEY-EAST CENTRAL SAN JOAQUIN VALLEY-
SOUTHWESTERN SAN JOAQUIN VALLEY-SOUTHEASTERN SAN JOAQUIN VALLEY-
MARIPOSA MADERA AND FRESNO COUNTY FOOTHILLS-
TULARE COUNTY FOOTHILLS-KERN COUNTY MOUNTAINS-
SIERRA NEVADA FROM YOSEMITE TO KINGS CANYON-
TULARE COUNTY MOUNTAINS-
410 PM PDT FRI JUN 4 2010

...WARM WEATHER AND FAST FLOWING COLD WATER ARE A DEADLY
COMBINATION...

AREA RIVERS...STREAMS AND RESERVOIRS ARE DIRECTLY FED FROM THE
MELTING SNOW PACK IN THE SIERRA NEVADA AND TEHACHAPI MOUNTAINS.
EVEN THOUGH A STREAM OR RIVER LOOKS COOL AND INVITING...THE WATER
IS ACTUALLY VERY COLD. OUTDOOR ENTHUSIASTS ARE ADVISED TO USE
EXTREME CAUTION NEAR RIVERS...STREAMS AND RESERVOIRS.

IF YOU ARE PLANNING TRAVEL INTO THE SOUTHERN SIERRA NEVADA...THE
TEHACHAPI MOUNTAINS...THE KERN RIVER CANYON OR THE SIERRA FOOTHILLS
THIS WEEKEND...REMEMBER THAT THE INCREASED COLD WATER FLOW IN
RIVERS...STREAMS AND RESERVOIRS...COMBINED WITH EXPECTED
TEMPERATURES IN THE LOWER TO MID 90S...CAN BE A POTENTIALLY
DEADLY COMBINATION.

PEOPLE PLANNING ACTIVITIES SUCH AS RAFTING...SWIMMING OR
PADDLING SHOULD ALWAYS WEAR LIFE JACKETS OR VESTS...AND KEEP OTHER
FLOTATION GEAR HANDY WHEN IN THE WATER. BE AWARE THAT EXPOSURE TO
COLD WATER FOR TOO LONG COULD QUICKLY RESULT IN HYPOTHERMIA.
HYPOTHERMIA IS A SUDDEN LOSS OF BODY TEMPERATURE WHICH CAN BE
FATAL. EARLY SIGNS OF HYPOTHERMIA ARE UNCONTROLLABLE SHIVERING AND
NUMBNESS OF LIMBS. THE ADVANCED STAGES OF HYPOTHERMIA INCLUDE...
MEMORY LOSS...DISORIENTATION...SLURRED SPEECH...DROWSINESS AND
APPARENT EXHAUSTION. A PERSON MAY APPEAR DRUNK DURING THE ADVANCED
STAGE AND SHIVERING MAY DECREASE OR STOP. IF YOU WITNESS SOMEONE
SUFFERING FROM THE SYMPTOMS OF HYPOTHERMIA...GET HELP IMMEDIATELY.

IF YOU ARE CAMPING NEAR A RIVER OR STREAM...REMEMBER THAT THE
HIGHEST WATER LEVELS OCCUR AT NIGHT...USUALLY WITHIN AN HOUR OR
TWO EITHER SIDE OF MIDNIGHT. A CAMPGROUND MAY LOOK DRY AND SAFE
IN THE LATE AFTERNOON...BUT CAN TAKE ON WATER AT NIGHT.

$$

DS
Re: Special Weather Statement
June 05, 2010 03:08PM
I think that the all upper-case weather warnings are terribly hard to read. I, and I think many of us readers just skip over all-UC posts because we think the poster is uncouth.

That said, getting eeek off the hook, it's the World Meteorological Organization (WMO) that dictates that weather bulletins/messages shall be typed in all CAPS with line width limit of 69 characters.

The reason? To make sure teletypes can print the messages!

The WMO needs to be dragged, kicking and screaming, into the 1980's!
avatar Re: Special Weather Statement
June 05, 2010 03:09PM
Quote
wagga
The WMO needs to be dragged, kicking and screaming, into the 1980's!

Indeed.
avatar Re: Flood Watch
June 05, 2010 03:44PM
Truckee River's up over 2000 cfs as are East Carson and West Walker

http://www.dreamflows.com/flows-canv.php
avatar Hazardous weather outlook
June 05, 2010 09:31PM
Hazardous weather outlook
National weather service san joaquin valley - hanford ca
227 pm pdt sat jun 5 2010

Caz096-062300-
Sierra nevada from yosemite to kings canyon-
227 pm pdt sat jun 5 2010

This hazardous weather outlook is for the southern sierra nevada
From yosemite to kings canyon.

.Day one...This afternoon and tonight

Warm weather in the higher elevations of the southern sierra will
Result in increased runoff into mountain rivers and streams the
Next few days. A flood watch for the merced river in yosemite park
Is in effect. Please see sfoffahnx...Wmo header wgus66 khnx for
Details.

.Days two through seven...Sunday through friday

Flood watch for the merced river in yosemite park through monday
Morning.

.Spotter information statement...

Skywarn spotter activation will not be needed.

Weather spotters are encouraged to report any significant or
Unusual conditions to the national weather service.

$$
avatar Re: Hazardous weather outlook
June 06, 2010 03:40PM
I can bearly hear these new reports.
Did u have radio turned down?



Chick-on is looking at you!
avatar Flood Watch
June 05, 2010 09:47PM
Flood watch
National weather service hanford ca
945 pm pdt sat jun 5 2010

Caz096-061300-
/o.Con.Khnx.Fa.A.0001.000000t0000z-100607t1600z/
/00000.0.Sm.000000t0000z.000000t0000z.000000t0000z.Oo/
Sierra nevada from yosemite to kings canyon-
Including the cities of...Shaver lake...Yosemite valley
945 pm pdt sat jun 5 2010

...Flood watch remains in effect through monday morning for
The yosemite valley in yosemite national park...

The national weather service in hanford continues a

* flood watch specifically for the yosemite valley in yosemite
National park.

* through monday morning.

* above normal temperatures this weekend combined with melting
Snow over the higher elevations will create rises in water
Levels along the merced river in yosemite national park during
The next several nights. The merced river at pohono bridge is
Expected to crest just below flood stage early sunday morning
Then peak just above flood stage early monday morning and
Probably again early tuesday morning.

* even when the upper merced river remains below flood stage...
There are dangers imposed by the high water levels and the
Swift cold current. Historically...When the merced river
Reaches 9.5 feet at pohono bridge...A portion of the lower
Pines campground becomes flooded. Limited site specific
Evacuations begin at housekeeping camp located along the south
Facing bank of the merced river...Upstream from sentinel
Bridge and downstream from stoneman bridge.

* residents...Campers and hikers should closely monitor water
Levels along the upper merced river and heed the advice of park
Officials when and if evacuations become necessary.

Precautionary/preparedness actions...

A flood watch means there is a potential for flooding based on
Current forecasts. You should monitor later forecasts and be
Alert for possible flood warnings. Those living in areas prone to
Flooding should be prepared to take action should flooding
Develop.

&&

$$

Sanger
avatar Re: Flood Watch
June 05, 2010 10:12PM
avatar Flood Warning
June 06, 2010 12:44PM
National weather service san joaquin valley - hanford ca
857 am pdt sun jun 6 2010

...The national weather service in hanford has issued a flood warning
For the following rivers in california...

Merced river at pohono bridge

Forecasts are based on present and forecasted meteorological and
Hydrologic conditions at time of issuance.

Precautionary/preparedness actions...

Unlisted forecast points are expected to remain below monitor stage.
All those affected by river conditions should remain alert for rapid
Changes and for possible forecast revisions.

For more hydrologic information and stage definitions refer to the
Following web site (all lower case):
Http://www.Wrh.Noaa.Gov/hnx/hydro.Php


&&

Cac043-071757-
/o.New.Khnx.Fl.W.0001.100606t1557z-000000t0000z/
/pohc1.1.Er.100606t1435z.100607t1100z.000000t0000z.No/
857 am pdt sun jun 6 2010

The national weather service in hanford has issued a

* flood warning for
The merced river at pohono bridge.
* until further notice.
* at 8:00 am sunday the stage was 10.0 feet.
* minor flooding is occurring and minor flooding is forecast.
* forecast to recede to near 9.0 ft late this afternoon then expected
To rise above flood stage of 10.0 ft tonight then forecast to rise
To near 10.5 ft early tomorrow then forecast to fluctuate near
10.5 ft thru tomorrow morning.
* flood stage 10.0 ft
* monitor stage msg ft,
* impact...Near 10.5 feet, water tops the swinging bridge downstream
From chapel meadow. Overflow from woski pond floods access
Road(northside drive) leading out of the west entrance of the park.
* impact...Near 10.0 feet, western portion of north pines
Campground...Located at the east end of yosemite valley between the
Confluence of the merced river and tenaya creek...Begins to flood.
Water rises to the base of the swinging bridge downstream from
Chapel meadow.
* impact...Near 9.5 feet, portion of lower pines campground becomes
Flooded. Limited site-specific evacuations begin at housekeeping
Camp located along the south-facing bank of the merced river.
(upstream from sentinel bridge and downstream from stoneman bridge)
* impact...Near 9.0 feet, chapel meadow (south side of river) and
Cooks meadow (north side of river) begins to experience overflow.
* impact...Near 6.5 feet, river is closed to rafters and flotation.


$$
avatar Flood warning
June 06, 2010 09:39PM
Flood warning
National weather service san joaquin valley - hanford ca
857 am pdt sun jun 6 2010

...The national weather service in hanford has issued a flood warning
For the following rivers in California...

Merced river at Pohono bridge

Forecasts are based on present and forecasted meteorological and
Hydrologic conditions at time of issuance.

Precautionary/preparedness actions...

Unlisted forecast points are expected to remain below monitor stage.
All those affected by river conditions should remain alert for rapid
Changes and for possible forecast revisions.

For more hydrologic information and stage definitions refer to the
Following web site (all lower case):
Http://www.Wrh.Noaa.Gov/hnx/hydro.php


&&

Cac043-071757-
/o.New.Khnx.Fl.W.0001.100606t1557z-000000t0000z/
/pohc1.1.Er.100606t1435z.100607t1100z.000000t0000z.No/
857 am pdt sun jun 6 2010

The national weather service in hanford has issued a

* flood warning for
The merced river at pohono bridge.
* until further notice.
* at 8:00 am sunday the stage was 10.0 feet.
* minor flooding is occurring and minor flooding is forecast.
* forecast to recede to near 9.0 ft late this afternoon then expected
To rise above flood stage of 10.0 ft tonight then forecast to rise
To near 10.5 ft early tomorrow then forecast to fluctuate near
10.5 ft thru tomorrow morning.
* flood stage 10.0 ft
* monitor stage msg ft,
* impact...Near 10.5 feet, water tops the swinging bridge downstream
From chapel meadow. Overflow from woski pond floods access
Road(northside drive) leading out of the west entrance of the park.
* impact...Near 10.0 feet, western portion of north pines
Campground...Located at the east end of yosemite valley between the
Confluence of the merced river and tenaya creek...Begins to flood.
Water rises to the base of the swinging bridge downstream from
Chapel meadow.
* impact...Near 9.5 feet, portion of lower pines campground becomes
Flooded. Limited site-specific evacuations begin at housekeeping
Camp located along the south-facing bank of the merced river.
(upstream from sentinel bridge and downstream from stoneman bridge)
* impact...Near 9.0 feet, chapel meadow (south side of river) and
Cooks meadow (north side of river) begins to experience overflow.
* impact...Near 6.5 feet, river is closed to rafters and flotation.


$$
avatar Flood warning
June 07, 2010 01:45PM
Flood warning
National weather service san joaquin valley - hanford ca
809 am pdt mon jun 7 2010

...Observed flooding changed from minor to minor severity for the
Following rivers in California...
...Forecast flooding changed from minor to minor severity for the
Following rivers in California...
Merced river at Pohono bridge

Forecasts are based on present and forecasted meteorological and
Hydrologic conditions at time of issuance.

Precautionary/preparedness actions...

Unlisted forecast points are expected to remain below monitor stage.
All those affected by river conditions should remain alert for rapid
Changes and for possible forecast revisions.

For more hydrologic information and stage definitions refer to the
Following web site (all lower case):
Http://www.Wrh.Noaa.Gov/hnx/hydro.Php


&&

Cac043-081709-
/o.Con.Khnx.Fl.W.0001.000000t0000z-000000t0000z/
/pohc1.1.Er.100606t1435z.100607t1100z.000000t0000z.No/
809 am pdt mon jun 7 2010

The flood warning continues for
The merced river at pohono bridge.* at 7:00 am monday the stage was 10.3 feet.
* minor flooding is occurring and minor flooding is forecast.
* forecast to recede to near 9.0 ft this evening then expected to
Rise above flood stage of 10.0 ft tonight then forecast to rise to
Near 10.0 ft early tomorrow then forecast to fluctuate near 10.0
Ft thru tomorrow morning.
* flood stage 10.0 ft
* monitor stage msg ft,
* impact...Near 10.5 feet, water tops the swinging bridge downstream
From chapel meadow. Overflow from woski pond floods access
Road(northside drive) leading out of the west entrance of the park.
* impact...Near 10.0 feet, western portion of north pines
Campground...Located at the east end of yosemite valley between the
Confluence of the merced river and tenaya creek...Begins to flood.
Water rises to the base of the swinging bridge downstream from
Chapel meadow.


$$
Re: Flood warning
June 12, 2010 09:14AM
Just got back from camping in Yosemite Valley (5 nights, Lower Pines). Monday and Tuesday nights the river was quite high, over its banks in most places.. Swinging Bridge was closed as the water was just about to crest it. Campsite 62 was a river and a number of sites in North Pines were flooded. Falls all over the place and some flooding in some of the meadows. But by the time we left Friday the river had gone down at least 2 feet from Weds. and was back in it's banks, except for the western part of the Valley. Campsite 62 was water free and I would imagine they got most of the closed campsites in North Pines re-opened too. But what a sight the Valley was when we were there. Never saw so much water before!

Highway 41 in the park is a real bear though, construction delays and rough sections of torn up asphalt. We took 140 when we left and it was fine.
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