Severe Thunderstorm Warning 17, NWS Sacramento, CA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SACRAMENTO CA
300 PM PDT THU MAY 08 2003

SCATTERED SHOWERS AND ISOLATED THUNDERSTORMS ACROSS THE AREA THIS
AFTERNOON. REPORTS OF SMALL HAIL BUT NO SEVERE STORMS YET. NRN AND
CENTRAL SAC VLY AND THE FOOTHILLS HAVE SEEN THE MOST SHOWER
ACTIVITY...WHICH IS ALSO WHERE THE ETA DEPICTED THE MOST INSTABILITY.
ANOTHER PULSE OF ENERGY ROTATING AROUND THE UPPER LEVEL LOW IS OFF
THE CAL COAST AND WILL MOVE THROUGH THE AREA THIS EVENING TO HELP
SUPPORT THE SHOWER ACTIVITY. UPPER LEVEL TROUGH CONTINUES TO MOVE
EAST WITH A COUPLE WEAK VORTS MOVING THROUGH THE NORTH FRIDAY AND
SATURDAY BRINGING A SLIGHT CHANCE OF SHOWERS. WEAK RIDGING OVER THE
AREA SUNDAY BRINGING MORE SEASONABLE WEATHER FOR A BRIEF TIME. THEN
ANOTHER LOW PRESSURE SYSTEM APPROACHES MONDAY BRINGING THE RETURN OF
COOLER AND WET WEATHER. MODELS INDICATING THAT THIS TROUGH WILL MOVE
THROUGH QUICKLY AS ANOTHER ONE DIGS OVER THE PAC NW BRINGING A
POSSIBLE DRYING PERIOD IN THE VALLEYS BUT A CONTINUED CHANCE OF
SHOWERS FOR THE NORTHERN MOUNTAINS.

.STO...SNOW ADVISORY TONIGHT FOR BURNEY BASIN/EASTERN SHASTA COUNTY.
    ...SNOW ADVISORY TONIGHT FOR WESTERN  PLUMAS COUNTY/LASSEN
       PARK...WEST SLOPE NORTHERN SIERRA NEVADA.

BLU EB 028/042 035/051 038 72731
RBL BB 047/068 047/072 048 72510
SAC BB 048/070 048/073 050 72400

HS

CAZ013>019-063-064-066>069-091400-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SACRAMENTO CA
700 AM PDT THU MAY 8 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR INTERIOR NORTHERN CALIFORNIA.

.DAY ONE...TODAY

A UNSEASONABLY COLD LOW PRESSURE SYSTEM WILL BE DROPPING THROUGH
NORTHERN CALIFORNIA TODAY PRODUCING RAIN AND SNOW SHOWERS WITH
ISOLATED THUNDERSTORMS EXPECTED NORTH OF ABOUT SACRAMENTO. SOME OF
THESE THUNDERSTORMS COULD BECOME SEVERE. REFER TO SPECIAL WEATHER
STATEMENT (WWUS86 KSTO SPSSTO) FOR DETAILS.

A SNOW ADVISORY HAS BEEN ISSUED FOR THE MOUNTAINS OF EASTERN SHASTA
COUNTY ABOVE 4000 FEET AND FOR WESTERN PLUMAS COUNTY/LASSEN PARK AND
THE WEST SLOPE OF THE NORTHERN SIERRA. REFER TO WINTER WEATHER
MESSAGE (WWUS46 KSTO WSWSTO) FOR DETAILS.

.DAYS TWO THROUGH SEVEN...

NO HAZARDOUS WEATHER IS EXPECTED THROUGH THE FORECAST PERIOD.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS TO THEIR LOCAL NATIONAL WEATHER SERVICE OFFICE.

THE LATEST WEATHER INFORMATION IS AVAILABLE ON THE INTERNET
AT (LOWER CASE): HTTP://WWW.WRH.NOAA.GOV/SACRAMENTO

SMITH