F0 tornado, Durham, California, April 8, 2005

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SACRAMENTO CA
300 PM PDT THU APR 8 2005

.DISCUSSION... QUITE OF BIT OF DEEP & MOIST CONVECTIVE ACTIVITY
OCCURRING ACROSS THE COUNTY WARNING AREA OF RESPONSIBILITY THIS
AFTERNOON.  MULTIPLE SEVERE THUNDERSTORM WARNINGS...WITH EVEN 3
TORNADO WARNINGS ISSUED ALREADY. STEEP PRESSURE GRADIENTS WHICH
WERE RESULTING IN ADVISORY CRITERIA SOUTH GUSTS ACROSS NORTHERN
SACRAMENTO VALLEY HAS RELAXED ENOUGH TO ALLOW IT TO EXPIRE. THE
SNOWFALL RATES ARE DECREASING AS THE FRONT MOVES THROUGH ... SO
SNOW ADVISORY THAT WAS ISSUED FOR OF OUR ALL MOUNTAINS WILL NOT
LIKELY BE EXTENDED BEYOND 6 PM.  FOR THIS REASON, ADVICE WAS TO
NOT INCLUDE THE HEADLINE FOR THOSE ZONES...AS IT WILL LIKELY BE
EXPIRED BY THE TIME THE ZONES ARE VALID.  THUNDERSTORM ACTIVITY
WILL WIND UP ACROSS THE LOWER ELEVATIONS THIS EVENING...LEAVING
BEHIND MAINLY SCATTERED SHOWERS. SNOW LEVEL, WHICH WAS REPORTED
TO BE QUITE LOW EARLIER, IS STARTING TO RISE...BUT STILL FAIRLY
LOW FOR THIS TIME OF YEAR. A RIDGE OF HIGH PRESSURE IS BUILDING
ACROSS THE EASTERN PACIFIC IN THE WAKE OF THIS SYSTEM, SO OTHER
THAN SOME ISOLATED MORNING SHOWERS, THE WEEKEND LOOKS TO BE DRY
AND WARMER.  THE NEXT SYSTEM MAY BRUSH OUR NORTHERN BORDERS FOR
LATE SUNDAY NIGHT THROUGH MONDAY, BUT THE FIRST REAL CHANCE FOR
ADDITIONAL PRECIPITATION WONT BE UNTIL TUESDAY. THAT WILL DROP
TOWARD THE GREAT BASIN, SO THE REST OF NEXT WEEK LOOKS DRY. RCH

&&

.STO WATCHES/WARNINGS/ADVISORIES... SNOW ADVISORY TO 6PM SHASTA
                      COUNTY AND NORTHERN LAKE COUNTY MOUNTAINS
                    ...LASSEN AREA INCLUDING BURNEY BASIN...AND
                      WEST SLOPES OF THE NORTHERN SIERRA NEVADA.

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SACRAMENTO CA
7 AM PDT FRI APR 8 2005

CAZ013>019-063-064-066>069-081400-
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 TO NORTHERN LAKE COUNTIES-
CLEAR LAKE/SOUTHERN LAKE COUNTY-MOTHERLODE-
EAST FOOTHILLS/NORTH SACRAMENTO VALLEY-
WESTERN PLUMAS COUNTY/LASSEN PARK-WEST SLOPE NORTHERN SIERRA
NEVADA-
7 AM PDT FRI APR 8 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR INTERIOR NORTHERN CALIFORNIA.

.DAY ONE...TODAY

A FEW ISOLATED THUNDERSTORMS MAY DEVELOP THROUGH THIS EVENING OVER A
LARGE PORTION OF THE INTERIOR NORTHERN CALIFORNIA.  THE STRONGEST
THUNDERSTORMS WILL LIKELY PRODUCE STRONG WINDS...HEAVY RAINS AND
HAIL. ATMOSPHERIC CONDITIONS ALSO SUPPORT THE SLIGHT CHANCE THAT ONE
OF THESE THUNDERSTORMS MAY PRODUCE A FUNNEL CLOUD OR TORNADO.

PERIODS OF HEAVY SNOW MAY PRODUCE WILL PRODUCE SOME LOCALLY
HAZARDOUS DRIVING CONDITIONS.  UP TO 7 INCHES OF SNOW MAY FALL OVER
THE NORTHERN INTERIOR COASTAL RANGE AND THE MOUNTAINS OF WESTERN
SHASTA COUNTY.

REFER TO THE ZONE FORECAST (FPUS56 KSTO - ZFPSTO) FOR MORE
INFORMATION.

.DAYS TWO THROUGH SEVEN...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.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/STO

LAM

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SACRAMENTO CA
149 PM PDT FRI APR 08 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0140 PM     FUNNEL CLOUD     3 W HAMILTON CITY       39.74N 122.07W
04/08/2005                   GLENN              CA   LAW ENFORCEMENT

            GLENN COUNTY SHERIFF REPORTS FUNNEL CLOUD ALONG HIGHWAY
            32 3 MILES WEST OF HAMILTON CITY.

&&