Area Forecast Discussion
Issued by NWS Sacramento, CA

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000
FXUS66 KSTO 041110
AFDSTO

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SACRAMENTO CA
410 AM PDT SAT JUL 4 2015

.SYNOPSIS...
DAILY AFTERNOON THUNDERSTORMS MAINLY OVER THE MOUNTAINS CONTINUE
FOR THE NEXT WEEK. DAYTIME HIGHS WILL BE ABOVE NORMAL THIS
WEEKEND, THEN GRADUALLY COOL TO NEAR AND BELOW NORMAL NEXT WEEK.

&&

.DISCUSSION...
WEATHER FOR FOURTH OF JULY CELEBRATIONS WILL BE HOT AND DRY FOR
THE VALLEY WHILE MOUNTAIN AREAS ARE WARM WITH A CHANCE FOR SHOWERS
AND THUNDERSTORMS.

VALLEY: THE NORTHERN SACRAMENTO VALLEY (REDDING/RED BLUFF
VICINITY) WILL BE THE HOTTEST REGION. THE SOUTHERN SACRAMENTO
VALLEY (SACRAMENTO METRO AREA) AND NORTHERN SAN JOAQUIN VALLEY
(STOCKTON/MODESTO VICINITY) WILL BE INFLUENCED BY THE DELTA BREEZE
AND BE ON THE COOLER SIDE. WITH THAT IN MIND, HERE`S A LOOK AT HOW
TEMPERATURES WILL PLAY OUT DURING THE DAY...FOR RUNS/WALKS AND
PARADES IN THE MORNING HOURS, TEMPERATURES WILL START OFF IN THE
MID 60S TO UPPER 70S AROUND 7 AM THEN WARM UP TO THE MID 80S AND
UPPER 90S BY NOON. THE HOTTEST PART OF THE DAY WILL BE BETWEEN 4-6
PM WHERE HIGHS WILL RANGE AROUND 92 TO 105 DEGREES. MOST FIREWORKS
SHOWS WILL START AROUND 9 PM WITH 80-95 DEGREES BECOMING 75-90 BY
10 PM.

DELTA: 7 AM TEMPERATURES WILL BE IN THE 60S THEN REACH 70-80
DEGREES BY NOON. PEAK HEAT BETWEEN 4-6 PM WILL BE 80S TO LOW 90S.
BETWEEN 9-10 PM, TEMPERATURES WILL BE MID 60S TO MID 70S.

FOOTHILLS/MOUNTAINS: THE HRRR SHOWS THUNDERSTORMS DEVELOPING OVER
THE SIERRA CREST NEAR AND NORTH OF YOSEMITE AROUND 11 AM THEN
SPREADING NORTHWARD AND INTO THE FOOTHILLS BY LATE AFTERNOON.
SHOWER/THUNDERSTORM ACTIVITY IS ALSO POSSIBLE IN THE COASTAL RANGE
BY LATE AFTERNOON/EARLY EVENING. LIGHTNING, GUSTY WINDS, AND HEAVY
DOWNPOURS ARE POSSIBLE WITH THUNDERSTORMS AND WILL IMPACT THE
SAFETY OF PEOPLE OUTSIDE FOR HOLIDAY ACTIVITIES. PLEASE WATCH THE
SKY THROUGHOUT THE DAY AND STAY SHELTERED IF THUNDERSTORMS
DEVELOP. MORNING TEMPERATURES WILL BE IN THE 60S AND 70S. BY NOON,
TEMPS WILL BE MID 70S TO MID 90S. PEAK HEAT WILL RANGE IN THE
UPPER 70S TO LOW 100S BETWEEN 3-6 PM. 9-10 PM TEMPS WILL BE MID
60S TO UPPER 80S.

FOR SUNDAY INTO TUESDAY, THE PATTERN OF SHOWERS/THUNDERSTORMS OVER
THE MOUNTAINS WITH DRY CONDITIONS IN THE VALLEY WILL PERSIST.
HOWEVER, THERE WILL BE A GRADUAL COOLING TREND. BY TUESDAY, MOST
LOCATIONS WILL EXPERIENCE DAYTIME HIGHS NEAR TO SLIGHTLY BELOW
NORMAL AS A LOW PRESSURE SYSTEM APPROACHES THE CA COASTLINE. JBB

&&

.EXTENDED DISCUSSION (WEDNESDAY THROUGH SATURDAY)

EXTENDED RANGE MODELS IN GENERAL AGREEMENT TRANSITING THE TROUGH
FROM OVER THE EASTERN PACIFIC ACROSS NORCAL INTO THE GREAT BASIN
LATE NEXT WEEK. THIS PATTERN WOULD FAVOR A CONTINUING CHANCE FOR
MAINLY DIURNAL SHOWERS AND THUNDERSTORMS OVER THE MOUNTAINS ALONG
WITH MODERATING TEMPERATURES.
&&

.AVIATION...

VFR CONDS NEXT 24 HRS EXC LCL MVFR/IFR VCNTY THUNDERSTORMS OMTNS
22Z-04Z. GENLY LGT WINDS BECMG SLY 10-15 KTS IN THE SAC VLY AFT
23Z (NWLY IN THE NRN SJ VLY) EXC WLY 20-30 KTS VCNTY CARQUINEZ
STRAIT.
&&

.STO WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

$$



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