987  
WWUS56 KHNX 140103  
SVSHNX  
 
SEVERE WEATHER STATEMENT  
NATIONAL WEATHER SERVICE SAN JOAQUIN VALLEY CA  
603 PM PDT WED SEP 13 2017  
 
CAC043-109-140130-  
/O.CON.KHNX.SV.W.0031.000000T0000Z-170914T0130Z/  
MARIPOSA CA-TUOLUMNE CA-  
603 PM PDT WED SEP 13 2017  
 
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 630 PM PDT  
FOR NORTHEASTERN MARIPOSA AND SOUTH CENTRAL TUOLUMNE COUNTIES...  
 
AT 559 PM PDT, A SEVERE THUNDERSTORM WAS LOCATED OVER NORTH PINES  
CAMPGROUND, MOVING SOUTHEAST AT 10 MPH.  
 
HAZARD...QUARTER SIZE HAIL. STORM IS STARTING TO WEAKEN AS IT  
APPROACHES YOSEMITE VALLEY. HOWEVER IT COULD REINTENSIFY AS  
IT MOVES ACROSS THE VALLEY.  
 
SOURCE...RADAR INDICATED.  
 
IMPACT...DAMAGE TO VEHICLES IS EXPECTED.  
 
LOCATIONS IMPACTED INCLUDE...  
SUNRISE HIGH SIERRA CAMP, LITTLE YOSEMITE VALLEY CAMPGROUND,  
PORCUPINE FLAT CAMPGROUND, MORRAINE DOME CAMPGROUND, MAY LAKE HIGH  
SIERRA CAMP, CAMP 4 CAMPGROUND, NORTH PINES CAMPGROUND, LITTLE  
YOSEMITE VALLEY RANGER STATION, YOSEMITE VALLEY VISITOR CENTER, LOWER  
PINES CAMPGROUND, UPPER PINES CAMPGROUND, YOSEMITE CREEK CAMPGROUND,  
YOSEMITE GLACIER POINT, YOSEMITE VALLEY AND SNOW FLAT.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...  
 
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A  
BUILDING.  
 
PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND  
LIGHTNING. SEEK SHELTER INSIDE A WELL-BUILT STRUCTURE. STAY AWAY FROM  
WINDOWS.  
 
TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM, AND MAY LEAD TO  
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.  
 

 
 
LAT...LON 3779 11971 3790 11952 3776 11940 3765 11961  
TIME...MOT...LOC 0059Z 326DEG 8KT 3777 11955  
 
HAIL...1.00IN  
WIND...<50MPH  
 

 
 
JDB  
 
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