Freeze Warning 1, NWS Sacramento, CA

757 
WWUS76 KSTO 111559
NPWSTO

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SACRAMENTO CA
759 AM PST SUN NOV 11 2012



CAZ015-016-111700-
/O.CAN.KSTO.FZ.W.0001.000000T0000Z-121111T1700Z/
NORTHERN SACRAMENTO VALLEY-CENTRAL SACRAMENTO VALLEY-
INCLUDING THE CITIES OF...REDDING...CHICO
759 AM PST SUN NOV 11 2012

...FREEZE WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS CANCELLED THE
FREEZE WARNING. 

TEMPERATURES HAVE WARMED ABOVE 32 DEGREES THEREFORE THE FREEZE
WARNING HAS BEEN CANCELLED.

$$

CAZ017>019-064-066-067-111700-
/O.CAN.KSTO.FR.Y.0001.000000T0000Z-121111T1600Z/
SOUTHERN SACRAMENTO VALLEY-CARQUINEZ STRAIT AND DELTA-
NORTHERN SAN JOAQUIN VALLEY-CLEAR LAKE/SOUTHERN LAKE COUNTY-
NORTHEAST FOOTHILLS/SACRAMENTO VALLEY-MOTHERLODE-
INCLUDING THE CITIES OF...STOCKTON...MODESTO...PARADISE
759 AM PST SUN NOV 11 2012

...FROST ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN SACRAMENTO HAS CANCELLED THE
FROST ADVISORY. 

TEMPERATURES HAVE WARMED ABOVE 32 DEGREES THEREFORE THE FROST
ADVISORY HAS BEEN CANCELLED.

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SACRAMENTO CA
313 PM PST SAT NOV 10 2012

.SHORT TERM DISCUSSION...

THE BACK SIDE OF THE LOW PRESSURE SYSTEM IS OVER THE REGION AND
WILL BE EXITING THE REGION TONIGHT. WINDS WILL BECOME LIGHT
AND ISOLATED SHOWERS WILL TO CONTINUE TO DIMINISH THIS AFTERNOON OVER
THE MOUNTAINS.

CLEAR SKIES TONIGHT WILL ALLOW FOR TEMPERATURES TO COOL INTO THE
LOW TO MID 30S FOR THE CENTRAL VALLEY...TO THE UPPER 20S TO LOWER
30S FOR THE VALLEYS IN THE FOOTHILLS. (NON THERMAL BELT AREAS) THE
FAR NORTH END OF THE VALLEY SHOULD DIP INTO THE UPPER 20S.
FOR THOSE PLACES THAT DIP TO THE FREEZING MARK OR BELOW DURATIONS
LOOK TO BE BETWEEN 3 TO 6 HOURS. THE DOWNTOWN SACRAMENTO AREA MOST
LIKELY WILL STAY ABOVE FREEZING TONIGHT WITH PATCHES OF FROST IN
THE OUTLYING AREAS...WINDSHIELDS DO NOT COUNT FOR FROST
ADVISORIES. SOME FOG WILL LIKELY DEVELOP OVERNIGHT IN SOME OF THE
MOUNTAIN VALLEYS AS WELL. AN FEW ISOLATED PATCHES OF FOG MAY
ALSO DEVELOP OVER THE SOUTHERN SACRAMENTO AND NORTHERN SAN JOAQUIN
VALLEYS AFTER SUNRISE.

HERE ARE SOME RECORDS FOR MINIMUM TEMPERATURES THAT OCCURRED IN
PREVIOUS YEARS FOR NOVEMBER 11:

REDDING AIRPORT - 27 DEGREES IN 2000
RED BLUFF AIRPORT - 30 DEGREES IN 2000
SAC EXEC AIRPORT - 31 DEGREES IN 1992
STOCKTON AIRPORT - 33 DEGREES IN 2000
RIDGING ON SUNDAY WILL DRY OUT THE AREA WITH MAINLY CLEAR SKIES AND
TEMPERATURES WARMING SLIGHTLY OVER TODAYS HIGHS.

A RIDGE WILL BUILD OVER THE REGION FOR SUNDAY WITH MOSTLY CLEAR
SKIES AND SLIGHTLY WARMER TEMPERATURES.

A LOW PRESSURE SYSTEM WILL MOVE INTO THE PACIFIC NORTHWEST SUNDAY
NIGHT WITH THE TAIL OF THAT SYSTEM SKIRTING THE FAR NORTHERN
SECTIONS OF THE STATE. ZONAL FLOW WILL PERSIST OVER THE STATE FOR
A COUPLE DAYS AHEAD OF THE NEXT SYSTEM WHICH WILL WARM
TEMPERATURES INTO THE 60S BY TUESDAY AND PRODUCE SOME RIDGING OVER
THE AREA BY WEDNESDAY. HAVE TRIMMED BACK ON POPS FOR THE MONDAY
THROUGH WEDNESDAY PERIOD WHICH MOSTLY LOOKS DRY FOR MOST PEOPLE
WITH PERHAPS A FEW SHOWERS OVER THE NORTHERN AREAS...MAINLY MONDAY
AND TUESDAY.

.EXTENDED DISCUSSION (WEDNESDAY THROUGH SATURDAY)

SEVERAL SYSTEMS WILL BRING A THREAT OF PRECIPITATION FOR WEDNESDAY
THROUGH SATURDAY. MOST OF THE PRECIPITATION IS EXPECTED TO MAINLY
BE OVER THE NORTHERN SACRAMENTO VALLEY AND SURROUNDING MOUNTAINS
ON WEDNESDAY. ANOTHER SYSTEM IS EXPECTED THURSDAY AND FRIDAY
BRINGING A THREAT OF PRECIPITATION TO ALL OF ENTIRE NORTHERN
CALIFORNIA. AN ADDITIONAL SYSTEM MAY MOVE IN OVER THE WEEKEND
CONTINUING THE WET WEATHER. THERE IS STILL UNCERTAINTY IN THE
TRACK...STRENGTH...AND TIMING OF THESE SYSTEMS. THE SYSTEM FOR
THURSDAY AND FRIDAY MAY SPLIT WITH THE STRONGER ENERGY GOING INTO
SOUTHERN CALIFORNIA LATE THURSDAY INTO FRIDAY SO KEPT CHANCE OF
PRECIPITATION. THE ECMWF IS SLOWER AND STRONGER WITH THE NEXT
SYSTEM BUT KEEPS MOST OF THE ENERGY OFFSHORE UNTIL LATE SUNDAY AND
MONDAY SO THE WEEKEND MAY BE DRY...ESPECIALLY IN THE VALLEY.

&&

.AVIATION...

DRIER AIR MOVES INTO THE AREA THIS EVENING AS A LOW PRESSURE SYSTEM
DEPARTS TO THE EAST. VFR CONDITIONS EXPECTED IN THE CENTRAL
VALLEY TONIGHT. LOCAL PATCHY GROUND FOG IS POSSIBLE LATE
TONIGHT/EARLY TOMORROW MORNING...ESPECIALLY NEAR RIVERS. IN THE
MOUNTAINS...SNOW SHOWER ACTIVITY SHOULD SUBSIDE IN THE EVENING.
CURRENT WIDESPREAD MVFR WITH LOCAL IFR/LIFR SHOULD IMPROVE
OVERNIGHT TO VFR. PATCHY FOG IS POSSIBLE IN THE MOUNTAIN VALLEYS
LATER TONIGHT. -DVC

&&

.STO WATCHES/WARNINGS/ADVISORIES...
FROST ADVISORY FROM 2 AM TO 8 AM PST SUNDAY CARQUINEZ STRAIT AND
DELTA...CENTRAL SACRAMENTO VALLEY...NORTHERN SACRAMENTO VALLEY...
NORTHERN SAN JOAQUIN VALLEY...SOUTHERN SACRAMENTO VALLEY.

FROST ADVISORY FROM MIDNIGHT TONIGHT TO 8 AM PST SUNDAY BELOW
2000 FEET FOR THE CLEAR LAKE/SOUTHERN LAKE COUNTY...MOTHERLODE...
NORTHEAST FOOTHILLS/SACRAMENTO VALLEY.

&&

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SACRAMENTO CA
700 AM PST SAT NOV 10 2012

CAZ013>019-063-064-066>069-111500-
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-
700 AM PST SAT NOV 10 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR INTERIOR NORTHERN CALIFORNIA.

.DAY ONE...TODAY

CLEARING SKIES TONIGHT COUPLED WITH LIGHT WINDS WILL LOWER
TEMPERATURES TOWARDS FREEZING AFTER MIDNIGHT. PATCHY FROST IS LIKELY
TO DEVELOP ACROSS THE VALLEY AND ADJACENT FOOTHILLS. OTHERWISE...NO
HAZARDOUS WEATHER EXPECTED.

* FROST ADVISORY.............SEE WWUS76 KSTO - NPWSTO FOR DETAILS *

.DAYS TWO THROUGH SEVEN... SUNDAY THROUGH FRIDAY

CLEARING SKIES EARLY SUNDAY MORNING COUPLED WITH LIGHT WINDS WILL
PUT EARLY MORNING LOWS NEAR FREEZING. PATCHY TO AREAS OF FROST
EXPECTED ACROSS THE VALLEY AND ADJACENT FOOTHILLS. OTHERWISE...NO
HAZARDOUS WEATHER EXPECTED.

* FROST ADVISORY.............SEE WWUS76 KSTO - NPWSTO FOR DETAILS *

.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

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SACRAMENTO CA
259 PM PST SAT NOV 10 2012

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

0255 PM     SLEET            2 ESE CAMINO            38.72N 120.63W
11/10/2012  U0.0 INCH        EL DORADO          CA   TRAINED SPOTTER

            GRAUPEL FALLING FOR THE PAST 20 MINUTES.
            ACCUMULATING ON THE GROUND.

&&

IRIS SYSTEM