Saturday, June 11, 2011

[californiadisasters] [EDIS] Flooding Possible In Southern Sierra This Weekend Onwards



HIGHEST FLOWS OF THE SPRING SNOWMELT SEASON ARE EXPECTED ABOVE ALL MAJOR RESERVOIRS. THIS FLOOD WATCH WILL REMAIN IN EFFECT UNTIL CANCELLED. MARIPOSA MADERA AND FRESNO COUNTY FOOTHILLS- TULARE COUNTY FOOTHILLS- SIERRA NEVADA FROM YOSEMITE TO KINGS CANYON- TULARE COUNTY MOUNTAINS- ...FLOOD WATCH REMAINS IN EFFECT UNTIL FURTHER NOTICE... * PORTIONS OF CENTRAL CALIFORNIA...INCLUDING THE FOLLOWING AREAS... THE SOUTHERN SIERRA NEVADA ABOVE RESERVOIRS...FROM YOSEMITE PARK SOUTH TO THE KERN COUNTY LINE. * THROUGH AT LEAST THE MIDDLE OF NEXT WEEK. * POTENTIAL FLOODING OF RIVERS AND STREAMS WOULD INCLUDE THE MERCED RIVER IN YOSEMITE PARK...THE SAN JOAQUIN RIVER ABOVE MILLERTON...THE KINGS RIVER ABOVE PINE FLAT...AND THE KAWEAH RIVER ABOVE TERMINUS DAM INCLUDING THREE RIVERS.  * INCREASING SNOWMELT WILL OCCUR AS TEMPERATURES REMAIN WARM OVER THE NEXT SEVERAL DAYS...WITH EVEN WARMER WEATHER EXPECTED FOR NEXT WEEK. PRECAUTIONARY/PREPAREDNESS ACTIONS...

Instruction:
.WARMING TEMPERATURES OVER THE NEXT WEEK OR SO WILL BRING INCREASING SNOWMELT IN THE HIGHER ELEVATIONS OF THE SOUTHERN SIERRA NEVADA. THE SNOWPACK REMAINS QUITE DEEP FOR EARLY JUNE... AND THIS WILL CAUSE SIGNIFICANT RISES ON RIVERS AND STREAMS.  THE VERY COLD WATER THIS TIME OF YEAR CAN BE QUITE DANGEROUS WHEN RUNNING FAST AND DEEP. IF YOU ARE CAUGHT IN THE WATER FOR ANY  LENGTH OF TIME UNPROTECTED... HYPOTHERMIA IS A DEADLY POSSIBILITY. A FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD TO FLOODING. FLOODING IS A VERY DANGEROUS SITUATION. YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION SHOULD FLOOD WARNINGS BE ISSUED. REMEMBER...THAT HIGHEST RIVER FLOWS GENERALLY OCCUR DURING THE  LATE EVENING AND EARLY MORNING HOURS... USUALLY WITHIN AND HOUR OR TWO OF MIDNIGHT. A CAMPGROUND OR TRAIL MAY BE DRY AND APPEAR QUITE SAFE DURING THE AFTERNOON...BUT CAN QUICKLY TAKE ON WATER AT NIGHT.

Area: NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY - HANFORD CA

Affected Counties or parts of: Tuolumne, Tulare, Mariposa, Merced, Kings, Kern, Fresno, Madera




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