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Special Weather Statement

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SACRAMENTO CA
143 PM PDT MON MAY 4 2015

CAZ013>019-063-064-066>069-051330-
SHASTA LAKE AREA / NORTHERN SHASTA COUNTY-
BURNEY BASIN / EASTERN SHASTA COUNTY-NORTHERN SACRAMENTO VALLEY-
CENTRAL SACRAMENTO VALLEY-SOUTHERN SACRAMENTO VALLEY-
CARQUINEZ STRAIT AND DELTA-NORTHERN SAN JOAQUIN VALLEY-
MOUNTAINS SOUTHWESTERN SHASTA COUNTY TO NORTHERN LAKE COUNTY-
CLEAR LAKE/SOUTHERN LAKE COUNTY-
NORTHEAST FOOTHILLS/SACRAMENTO VALLEY-MOTHERLODE-
WESTERN PLUMAS COUNTY/LASSEN PARK-
WEST SLOPE NORTHERN SIERRA NEVADA-
143 PM PDT MON MAY 4 2015

...COOLER WITH SHOWERS AND THUNDERSTORMS POSSIBLE LATE WEDNESDAY THROUGH FRIDAY...

.IMPACTS...
* CHAIN CONTROLS POSSIBLE OVER THE SIERRA PASSES
* TRAVEL DELAYS POSSIBLE
* DANGEROUS LIGHTNING

.FORECAST CONFIDENCE...
* MEDIUM FOR PRECIPITATION OVER THE MOUNTAINS
* LOW FOR SHOWERS AND THUNDERSTORMS IN THE VALLEY AND FOOTHILLS

.TIMING AND STRENGTH...
* SHOWERS AND THUNDERSTORMS OVER THE MOUNTAINS MAINLY LATE WEDNESDAY
  THROUGH FRIDAY
* THURSDAY IS THE BRUNT OF THE STORM AND BEST CHANCE TO SEE
  ANYTHING IN THE VALLEY
* SNOW LEVELS AROUND 5500 FT, MAY BE LOCALLY LOWER IN HEAVY SHOWERS


WEATHER SUMMARY:
AN UPPER LEVEL LOW DROPS SOUTH INTO NORTHERN CALIFORNIA LATE
WEDNESDAY INTO THURSDAY. THIS WILL BRING A THREAT OF SHOWERS AND
THUNDERSTORMS OVER ALL OF INTERIOR NORTHERN CALIFORNIA, ESPECIALLY
TO THE MOUNTAINS. THE LOW SHIFTS TO THE EAST ON FRIDAY FOR THE
GREATEST THREAT OVER THE SIERRA AND SHASTA COUNTY MOUNTAINS.
PRECIPITATION IS SOMEWHAT LIMITED WITH THIS SYSTEM, SO AMOUNTS ARE
GENERALLY EXPECTED TO BE LESS THAN HALF AN INCH, AND WILL BE
VARIABLE DUE TO CONVECTIVE NATURE OF SHOWERS. SNOW LEVELS WILL BE
AROUND 5500 FT, WITH LOCALLY LOWER LEVELS POSSIBLE IN HEAVIER
SHOWERS. SNOW ACCUMULATIONS UP TO 6 INCHES POSSIBLE.

NWS WILL CONTINUE TO PROVIDE UPDATES AS THE SITUATION DEVELOPS.

$$









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