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Area Forecast Discussion

FXUS66 KSTO [Sacramento/WFO CA] 030508 AFDSTO 

FXUS66 KSTO 030508
AFDSTO [HEAD]

National Weather Service Sacramento California 10:08pm PDT Sat May 2 2015 

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SACRAMENTO CA
1008 PM PDT SAT MAY 2 2015 [HEAD]

Synopsis. Warm temperatures with a slight chance of mountain thunderstorms continuing through early next week. Cooler and possibly more unsettled weather will set in late next week. 

.SYNOPSIS...
WARM TEMPERATURES WITH A SLIGHT CHANCE OF MOUNTAIN THUNDERSTORMS
CONTINUING THROUGH EARLY NEXT WEEK. COOLER AND POSSIBLY MORE
UNSETTLED WEATHER WILL SET IN LATE NEXT WEEK. [DISC]

Discussion. Clear skies and light winds this evening over Northern California. Current forecast is on track and no update will be needed. 

.DISCUSSION...
CLEAR SKIES AND LIGHT WINDS THIS EVENING OVER NORCAL. CURRENT
FORECAST IS ON TRACK AND NO UPDATE WILL BE NEEDED. [DISC]

Previous discussion. A mild day today, though temperatures are 5–10° cooler than yesterday. Highs today are on track to be in the upper 80s over most of the valley, reaching around 90 for a few spots like Redding and Modesto. Skies are mostly clear, except for some cumulus popping up over the Sierra with some afternoon instability. There could be a few showers and thunderstorms developing along the crest by early evening, but southwest flow will push any storms that develop into Nevada. 

.PREVIOUS DISCUSSION... A MILD DAY TODAY, THOUGH TEMPERATURES ARE
5 TO 10 DEGREES COOLER THAN YESTERDAY. HIGHS TODAY ARE ON TRACK TO
BE IN THE UPPER 80S OVER MOST OF THE VALLEY, REACHING AROUND 90
FOR A FEW SPOTS LIKE REDDING AND MODESTO. SKIES ARE MOSTLY CLEAR,
EXCEPT FOR SOME CUMULUS POPPING UP OVER THE SIERRA WITH SOME
AFTERNOON INSTABILITY. THERE COULD BE A FEW SHOWERS AND
THUNDERSTORMS DEVELOPING ALONG THE CREST BY EARLY EVENING, BUT
SOUTHWEST FLOW WILL PUSH ANY STORMS THAT DEVELOP INTO NEVADA. [DISC]

Weak troughing will bring slightly cooler temperatures on Sunday and Monday. Still, temperatures will remain well above normal levels. Showers and thunderstorms along the crest continue to be possible for afternoons and evenings. Tuesday is expected to be dry with a low from the Gulf of Alaska well to the north. (Ek) 

WEAK TROUGHING WILL BRING SLIGHTLY COOLER TEMPERATURES ON SUNDAY
AND MONDAY. STILL, TEMPERATURES WILL REMAIN WELL ABOVE NORMAL
LEVELS. SHOWERS AND THUNDERSTORMS ALONG THE CREST CONTINUE TO BE
POSSIBLE FOR AFTERNOONS AND EVENINGS. TUESDAY IS EXPECTED TO BE
DRY WITH A LOW FROM THE GULF OF ALASKA WELL TO THE NORTH. EK [DISC]

Extended discussion (Wednesday through Saturday) 

.EXTENDED DISCUSSION (WEDNESDAY THROUGH SATURDAY) [DISC]

The upper low over the Pacific Northwest digs down over Northern California on Wednesday, with the cold core of the low passing overhead on Thursday. This will bring a cooler and unsettled pattern for mid to late next week. Mountain showers and thunderstorms are possible on Wednesday, with the best chances for convection on Thursday and Thursday evening. The exact track of the low remains uncertain at this point, but general agreement amongst the models is improving. Have spread the potential for precipitation into the northern Sacramento Valley and the northern San Joaquin Valley. 

THE UPPER LOW OVER THE PACIFIC NORTHWEST DIGS DOWN OVER NORTHERN
CALIFORNIA ON WEDNESDAY, WITH THE COLD CORE OF THE LOW PASSING
OVERHEAD ON THURSDAY. THIS WILL BRING A COOLER AND UNSETTLED
PATTERN FOR MID TO LATE NEXT WEEK. MOUNTAIN SHOWERS AND
THUNDERSTORMS ARE POSSIBLE ON WEDNESDAY, WITH THE BEST CHANCES FOR
CONVECTION ON THURSDAY AND THURSDAY EVENING. THE EXACT TRACK OF
THE LOW REMAINS UNCERTAIN AT THIS POINT, BUT GENERAL AGREEMENT
AMONGST THE MODELS IS IMPROVING. HAVE SPREAD THE POTENTIAL FOR
PRECIPITATION INTO THE NORTHERN SACRAMENTO VALLEY AND THE NORTHERN
SAN JOAQUIN VALLEY. [DISC]

Drier and milder weather is expected for next weekend. (Ek) 

DRIER AND MILDER WEATHER IS EXPECTED FOR NEXT WEEKEND. EK [DISC]

Aviation.  

.AVIATION... [AVIA]

Generally VFR [Visual Flight Rules] conditions the next 24 hours across interior Northern California. 

GENERALLY VFR CONDITIONS THE NEXT 24 HOURS ACROSS INTERIOR
NORTHERN CALIFORNIA. [AVI2]

STO [Sacramento/WFO CA] Watches/Warnings/Advisories

  • None. 
.STO WATCHES/WARNINGS/ADVISORIES...
NONE. [WARN]

Point Forecast

Mather CA

Overnight Mostly clear, with a low around 50°. East wind around 8 mph.
Sunday Sunny, with a high near 72°. East wind 5 to 9 mph becoming west in the morning.
Sunday Night Mostly clear, with a low around 49°. West wind 5 to 8 mph becoming calm.
Monday Mostly sunny, with a high near 69°. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Monday Night Partly cloudy, with a low around 47°. West wind 5 to 8 mph becoming light and variable in the evening.
Tuesday Mostly sunny, with a high near 68°.
Tuesday Night Partly cloudy, with a low around 45°.
Wednesday A slight chance of showers and thunderstorms. Mostly sunny, with a high near 63°.
Wednesday Night A chance of showers and thunderstorms. Partly cloudy, with a low around 45°.
Thursday A chance of showers and thunderstorms. Partly sunny, with a high near 54°.
Thursday Night A chance of showers and thunderstorms. Mostly cloudy, with a low around 42°.
Friday A slight chance of showers and thunderstorms. Partly sunny, with a high near 55°.
Friday Night A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 39°.
Saturday A slight chance of showers. Partly sunny, with a high near 60°.
Overnight
Mostly clear, with a low around 50. East wind around 8 mph.
Sunday
Sunny, with a high near 72. East wind 5 to 9 mph becoming west in the morning.
Sunday Night
Mostly clear, with a low around 49. West wind 5 to 8 mph becoming calm.
Monday
Mostly sunny, with a high near 69. Light and variable wind becoming west 5 to 10 mph in the afternoon.
Monday Night
Partly cloudy, with a low around 47. West wind 5 to 8 mph becoming light and variable in the evening.
Tuesday
Mostly sunny, with a high near 68.
Tuesday Night
Partly cloudy, with a low around 45.
Wednesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 63.
Wednesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 45.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 54.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 42.
Friday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 55.
Friday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 39.
Saturday
A slight chance of showers. Partly sunny, with a high near 60.

This page is generated dynamically from the National Weather Service's NWS point forecast and Area Forecast Discussion, reformatted for readability. NWS glossary; about point forecasts. For more information, visit the Lobitos Weather Project home page. Comments and corrections are welcome: