Auburn CA WX RSS feed

Area Forecast Discussion

FXUS66 KSTO [Sacramento/WFO CA] 260954 AFDSTO ∨

FXUS66 KSTO 260954
AFDSTO [HEAD]

National Weather Service Sacramento California 2:54am PDT Fri Apr 26 2024 ∨

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SACRAMENTO CA
254 AM PDT FRI APR 26 2024 [HEAD]

Synopsis. Mountain snow continues through the evening with thunderstorm chances today, highest over the foothills and mountains. Mild and warmer weather in store this weekend into early next week. ∨

.SYNOPSIS...
MOUNTAIN SNOW CONTINUES THROUGH THE EVENING WITH THUNDERSTORM
CHANCES TODAY, HIGHEST OVER THE FOOTHILLS AND MOUNTAINS. MILD AND
WARMER WEATHER IN STORE THIS WEEKEND INTO EARLY NEXT WEEK. [DISC]

Discussion. Showers are ongoing over the Sierra and expected to continue through the morning. Heaviest snowfall is expected late this morning as the trough continues to build into the Great Basin. Snow levels are 6000–7000 feet, lowering throughout the day. NBM probabilities show a 15–35% chance of additional snow amounts of 4 inches or greater, primarily south of Hwy. 50. Currently, there are 15–30 mph wind gusts over the Sierra and will continue through the morning before tapering down as the snowfall tapers off. Impacts are expected to be minimal but be sure to be cautious if planning mountainous travel as roads may be slick. ∨

.DISCUSSION...
SHOWERS ARE ONGOING OVER THE SIERRA AND EXPECTED TO CONTINUE
THROUGH THE MORNING. HEAVIEST SNOWFALL IS EXPECTED LATE THIS
MORNING AS THE TROUGH CONTINUES TO BUILD INTO THE GREAT BASIN.
SNOW LEVELS ARE 6000 TO 7000 FEET, LOWERING THROUGHOUT THE DAY.
NBM PROBABILITIES SHOW A 15-35% CHANCE OF ADDITIONAL SNOW AMOUNTS
OF 4 INCHES OR GREATER, PRIMARILY SOUTH OF HWY. 50. CURRENTLY,
THERE ARE 15 TO 30 MPH WIND GUSTS OVER THE SIERRA AND WILL
CONTINUE THROUGH THE MORNING BEFORE TAPERING DOWN AS THE SNOWFALL
TAPERS OFF. IMPACTS ARE EXPECTED TO BE MINIMAL BUT BE SURE TO BE
CAUTIOUS IF PLANNING MOUNTAINOUS TRAVEL AS ROADS MAY BE SLICK. [DISC]

Today's precipitation will be showery in nature with the majority of precipitation landing over the foothills and mountains. NBM probabilities show a 15–35% chance of amounts greater than 0.25" in the foothills and 45–75% chance over the mountains. The exception to this is any thunderstorm development that may produce localized brief heavy rain showers. Forecast shows a 15–30% chance of thunderstorm development, highest chances in the afternoon and evening. With any developed thunderstorm, lightning, brief heavy rain showers, small hail, and gusty winds are possible. Latest high-resolution forecast model runs shows scattered showers north of I-80 over the mountains and foothills this morning with stronger storms possible early this afternoon through the evening. ∨

TODAY`S PRECIPITATION WILL BE SHOWERY IN NATURE WITH THE MAJORITY
OF PRECIPITATION LANDING OVER THE FOOTHILLS AND MOUNTAINS. NBM
PROBABILITIES SHOW A 15-35% CHANCE OF AMOUNTS GREATER THAN 0.25"
IN THE FOOTHILLS AND 45-75% CHANCE OVER THE MOUNTAINS. THE
EXCEPTION TO THIS IS ANY THUNDERSTORM DEVELOPMENT THAT MAY PRODUCE
LOCALIZED BRIEF HEAVY RAIN SHOWERS. FORECAST SHOWS A 15-30%
CHANCE OF THUNDERSTORM DEVELOPMENT, HIGHEST CHANCES IN THE
AFTERNOON AND EVENING. WITH ANY DEVELOPED THUNDERSTORM, LIGHTNING,
BRIEF HEAVY RAIN SHOWERS, SMALL HAIL, AND GUSTY WINDS ARE
POSSIBLE. LATEST HI-RES FORECAST MODEL RUNS SHOWS SCATTERED
SHOWERS NORTH OF I-80 OVER THE MOUNTAINS AND FOOTHILLS THIS
MORNING WITH STRONGER STORMS POSSIBLE EARLY THIS AFTERNOON THROUGH
THE EVENING. [DISC]

By late this evening, snow showers will have tapered off as ridging begins to build over the area Saturday morning. Temperatures begin to warm and by Sunday, afternoon highs will be in the mid to upper 70s across the valley with continued warm weather in store for early next week. Monday will see breezy north to west winds as northerly flow strengthens under the ridge. ∨

BY LATE THIS EVENING, SNOW SHOWERS WILL HAVE TAPERED OFF AS
RIDGING BEGINS TO BUILD OVER THE AREA SATURDAY MORNING.
TEMPERATURES BEGIN TO WARM AND BY SUNDAY, AFTERNOON HIGHS WILL BE
IN THE MID TO UPPER 70S ACROSS THE VALLEY WITH CONTINUED WARM
WEATHER IN STORE FOR EARLY NEXT WEEK. MONDAY WILL SEE BREEZY NORTH
TO WEST WINDS AS NORTHERLY FLOW STRENGTHENS UNDER THE RIDGE. [DISC]

Extended discussion (Tuesday through Friday). ∨

.EXTENDED DISCUSSION (TUESDAY THROUGH FRIDAY)... [DISC]

Quasi-zonal flow [Large-scale atmospheric flow in which the east-west component is dominant] over Eastern Pacific Tuesday into Wednesday as embedded short wave troughs remain north of the CWA [County Warning Area; see the LWP home page (link at bottom of page) for a CWA map]. Deeper upper lows forecast through the Pacific Northwest Thursday into Friday with associated troughing extending into far northern portions of California. NBM depicting some low POPs [Probability of Precipitation] over the Shasta Mountains Thursday into Friday. Downward trend in temperatures expected through the extended but remaining above normal. ∨

QUASI-ZONAL FLOW OVER EPAC TUESDAY INTO WEDNESDAY AS EMBEDDED
SHORT WAVE TROUGHS REMAIN NORTH OF THE CWA. DEEPER UPPER LOWS
PROGGED THROUGH THE PACNW THURSDAY INTO FRIDAY WITH ASSOCIATED
TROUGHING EXTENDING INTO FAR NORTHERN PORTIONS OF CA. NBM
DEPICTING SOME LOW POPS OVER THE SHASTA MOUNTAINS THURSDAY INTO
FRIDAY. DOWNWARD TREND IN TEMPERATURES EXPECTED THROUGH THE
EXTENDED BUT REMAINING ABOVE NORMAL. [DISC]

Aviation. ∨

.AVIATION... [AVIA]

Pacific storm will bring a threat of showers, mtn snow showers, and isolated thunderstorms over interior Northern California through 04Z [9pm PDT] Sat. In Central Valley/Delta, mainly VFR [Visual Flight Rules] next 24 hours except isolated MVFR [Marginal Visual Flight Rules] possible through 03Z [8pm PDT] Sat in showers/thunderstorms. Surface wind mainly at or below 12 kts [14 mph] except vicinity of Delta and N San Joaquin Valley SW-W surface wind 15–20 kts [17–23 mph] with local gusts up to 25 kts [29 mph] possible through 05Z [10pm PDT] Sat. Foothills/mountains areas MVFR [Marginal Visual Flight Rules]/IFR [Instrument Flight Rules] in precipitation through 04Z [9pm PDT] Sat. Snow levels 5500–6500 feet. Areas W-NW surface wind gusts up to 30 kts [35 mph] possible over mountains through 00Z [5pm PDT] Sat. ∨

PAC STORM WILL BRING A THREAT OF SHWRS, MTN SNOW SHWRS, AND
ISOLATED THUNDERSTORMS OVER INTERIOR NORCAL THRU 04Z SAT. IN
CENTRAL VLY/DELTA, MAINLY VFR NEXT 24 HRS EXCEPT ISOLATED MVFR
POSSIBLE THRU 03Z SAT IN SHWRS/TSTMS. SFC WIND MAINLY AT OR BELOW
12 KTS EXCEPT VCNTY OF DELTA AND N SAN JOAQUIN VLY SW-W SFC WIND
15-20 KTS WITH LCL GUSTS UP TO 25 KTS POSSIBLE THRU 05Z SAT.
FOOTHILLS/MTNS AREAS MVFR/IFR IN PRECIP THRU 04Z SAT. SNOW LEVELS
5500-6500 FEET. AREAS W-NW SFC WIND GUSTS UP TO 30 KTS POSSIBLE
OVER MTNS THRU 00Z SAT. [AVI2]

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

None. ∨

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

Weather NWS glossary About NWS point forecasts Hourly Weather Graph Long-range forecast Radar Satellite Max Temps Graphical Forecast	Area Forecast Discussion FXUS66 KSTO [Sacramento/WFO CA] 260954 AFDSTO ∨ FXUS66 KSTO 260954 AFDSTO [HEAD] National Weather Service Sacramento California 2:54am PDT Fri Apr 26 2024 ∨ AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SACRAMENTO CA 254 AM PDT FRI APR 26 2024 [HEAD] Synopsis. Mountain snow continues through the evening with thunderstorm chances today, highest over the foothills and mountains. Mild and warmer weather in store this weekend into early next week. ∨ .SYNOPSIS... MOUNTAIN SNOW CONTINUES THROUGH THE EVENING WITH THUNDERSTORM CHANCES TODAY, HIGHEST OVER THE FOOTHILLS AND MOUNTAINS. MILD AND WARMER WEATHER IN STORE THIS WEEKEND INTO EARLY NEXT WEEK. [DISC] Discussion. Showers are ongoing over the Sierra and expected to continue through the morning. Heaviest snowfall is expected late this morning as the trough continues to build into the Great Basin. Snow levels are 6000–7000 feet, lowering throughout the day. NBM probabilities show a 15–35% chance of additional snow amounts of 4 inches or greater, primarily south of Hwy. 50. Currently, there are 15–30 mph wind gusts over the Sierra and will continue through the morning before tapering down as the snowfall tapers off. Impacts are expected to be minimal but be sure to be cautious if planning mountainous travel as roads may be slick. ∨ .DISCUSSION... SHOWERS ARE ONGOING OVER THE SIERRA AND EXPECTED TO CONTINUE THROUGH THE MORNING. HEAVIEST SNOWFALL IS EXPECTED LATE THIS MORNING AS THE TROUGH CONTINUES TO BUILD INTO THE GREAT BASIN. SNOW LEVELS ARE 6000 TO 7000 FEET, LOWERING THROUGHOUT THE DAY. NBM PROBABILITIES SHOW A 15-35% CHANCE OF ADDITIONAL SNOW AMOUNTS OF 4 INCHES OR GREATER, PRIMARILY SOUTH OF HWY. 50. CURRENTLY, THERE ARE 15 TO 30 MPH WIND GUSTS OVER THE SIERRA AND WILL CONTINUE THROUGH THE MORNING BEFORE TAPERING DOWN AS THE SNOWFALL TAPERS OFF. IMPACTS ARE EXPECTED TO BE MINIMAL BUT BE SURE TO BE CAUTIOUS IF PLANNING MOUNTAINOUS TRAVEL AS ROADS MAY BE SLICK. [DISC] Today's precipitation will be showery in nature with the majority of precipitation landing over the foothills and mountains. NBM probabilities show a 15–35% chance of amounts greater than 0.25" in the foothills and 45–75% chance over the mountains. The exception to this is any thunderstorm development that may produce localized brief heavy rain showers. Forecast shows a 15–30% chance of thunderstorm development, highest chances in the afternoon and evening. With any developed thunderstorm, lightning, brief heavy rain showers, small hail, and gusty winds are possible. Latest high-resolution forecast model runs shows scattered showers north of I-80 over the mountains and foothills this morning with stronger storms possible early this afternoon through the evening. ∨ TODAY`S PRECIPITATION WILL BE SHOWERY IN NATURE WITH THE MAJORITY OF PRECIPITATION LANDING OVER THE FOOTHILLS AND MOUNTAINS. NBM PROBABILITIES SHOW A 15-35% CHANCE OF AMOUNTS GREATER THAN 0.25" IN THE FOOTHILLS AND 45-75% CHANCE OVER THE MOUNTAINS. THE EXCEPTION TO THIS IS ANY THUNDERSTORM DEVELOPMENT THAT MAY PRODUCE LOCALIZED BRIEF HEAVY RAIN SHOWERS. FORECAST SHOWS A 15-30% CHANCE OF THUNDERSTORM DEVELOPMENT, HIGHEST CHANCES IN THE AFTERNOON AND EVENING. WITH ANY DEVELOPED THUNDERSTORM, LIGHTNING, BRIEF HEAVY RAIN SHOWERS, SMALL HAIL, AND GUSTY WINDS ARE POSSIBLE. LATEST HI-RES FORECAST MODEL RUNS SHOWS SCATTERED SHOWERS NORTH OF I-80 OVER THE MOUNTAINS AND FOOTHILLS THIS MORNING WITH STRONGER STORMS POSSIBLE EARLY THIS AFTERNOON THROUGH THE EVENING. [DISC] By late this evening, snow showers will have tapered off as ridging begins to build over the area Saturday morning. Temperatures begin to warm and by Sunday, afternoon highs will be in the mid to upper 70s across the valley with continued warm weather in store for early next week. Monday will see breezy north to west winds as northerly flow strengthens under the ridge. ∨ BY LATE THIS EVENING, SNOW SHOWERS WILL HAVE TAPERED OFF AS RIDGING BEGINS TO BUILD OVER THE AREA SATURDAY MORNING. TEMPERATURES BEGIN TO WARM AND BY SUNDAY, AFTERNOON HIGHS WILL BE IN THE MID TO UPPER 70S ACROSS THE VALLEY WITH CONTINUED WARM WEATHER IN STORE FOR EARLY NEXT WEEK. MONDAY WILL SEE BREEZY NORTH TO WEST WINDS AS NORTHERLY FLOW STRENGTHENS UNDER THE RIDGE. [DISC] Extended discussion (Tuesday through Friday). ∨ .EXTENDED DISCUSSION (TUESDAY THROUGH FRIDAY)... [DISC] Quasi-zonal flow [Large-scale atmospheric flow in which the east-west component is dominant] over Eastern Pacific Tuesday into Wednesday as embedded short wave troughs remain north of the CWA [County Warning Area; see the LWP home page (link at bottom of page) for a CWA map]. Deeper upper lows forecast through the Pacific Northwest Thursday into Friday with associated troughing extending into far northern portions of California. NBM depicting some low POPs [Probability of Precipitation] over the Shasta Mountains Thursday into Friday. Downward trend in temperatures expected through the extended but remaining above normal. ∨ QUASI-ZONAL FLOW OVER EPAC TUESDAY INTO WEDNESDAY AS EMBEDDED SHORT WAVE TROUGHS REMAIN NORTH OF THE CWA. DEEPER UPPER LOWS PROGGED THROUGH THE PACNW THURSDAY INTO FRIDAY WITH ASSOCIATED TROUGHING EXTENDING INTO FAR NORTHERN PORTIONS OF CA. NBM DEPICTING SOME LOW POPS OVER THE SHASTA MOUNTAINS THURSDAY INTO FRIDAY. DOWNWARD TREND IN TEMPERATURES EXPECTED THROUGH THE EXTENDED BUT REMAINING ABOVE NORMAL. [DISC] Aviation. ∨ .AVIATION... [AVIA] Pacific storm will bring a threat of showers, mtn snow showers, and isolated thunderstorms over interior Northern California through 04Z [9pm PDT] Sat. In Central Valley/Delta, mainly VFR [Visual Flight Rules] next 24 hours except isolated MVFR [Marginal Visual Flight Rules] possible through 03Z [8pm PDT] Sat in showers/thunderstorms. Surface wind mainly at or below 12 kts [14 mph] except vicinity of Delta and N San Joaquin Valley SW-W surface wind 15–20 kts [17–23 mph] with local gusts up to 25 kts [29 mph] possible through 05Z [10pm PDT] Sat. Foothills/mountains areas MVFR [Marginal Visual Flight Rules]/IFR [Instrument Flight Rules] in precipitation through 04Z [9pm PDT] Sat. Snow levels 5500–6500 feet. Areas W-NW surface wind gusts up to 30 kts [35 mph] possible over mountains through 00Z [5pm PDT] Sat. ∨ PAC STORM WILL BRING A THREAT OF SHWRS, MTN SNOW SHWRS, AND ISOLATED THUNDERSTORMS OVER INTERIOR NORCAL THRU 04Z SAT. IN CENTRAL VLY/DELTA, MAINLY VFR NEXT 24 HRS EXCEPT ISOLATED MVFR POSSIBLE THRU 03Z SAT IN SHWRS/TSTMS. SFC WIND MAINLY AT OR BELOW 12 KTS EXCEPT VCNTY OF DELTA AND N SAN JOAQUIN VLY SW-W SFC WIND 15-20 KTS WITH LCL GUSTS UP TO 25 KTS POSSIBLE THRU 05Z SAT. FOOTHILLS/MTNS AREAS MVFR/IFR IN PRECIP THRU 04Z SAT. SNOW LEVELS 5500-6500 FEET. AREAS W-NW SFC WIND GUSTS UP TO 30 KTS POSSIBLE OVER MTNS THRU 00Z SAT. [AVI2] STO [Sacramento/WFO CA] Watches/Warnings/Advisories None. ∨ .STO WATCHES/WARNINGS/ADVISORIES... NONE. [WARN]	Point Forecast Auburn CA 26 Apr 07:55am PDT Today A 50% chance of showers and thunderstorms, mainly before 5pm. Partly sunny, with a high near 62°. SSE wind 6 to 9 mph becoming WNW in the afternoon. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. Tonight A 10% chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 43°. WNW wind around 5 mph becoming light and variable in the evening. Saturday Sunny, with a high near 66°. Light and variable wind becoming west 5 to 8 mph in the afternoon. Saturday Night Mostly cloudy, then gradually becoming clear, with a low around 47°. WNW wind 5 to 7 mph becoming calm in the evening. Sunday Sunny, with a high near 70°. Light and variable wind becoming west 5 to 8 mph in the afternoon. Sunday Night Clear, with a low around 46°. Monday Sunny, with a high near 71°. Monday Night Clear, with a low around 48°. Tuesday Sunny, with a high near 74°. Tuesday Night Clear, with a low around 50°. Wednesday Sunny, with a high near 75°. Wednesday Night Mostly clear, with a low around 49°. Thursday Sunny, with a high near 71°. Today A 50 percent chance of showers and thunderstorms, mainly before 5pm. Partly sunny, with a high near 62. South southeast wind 6 to 9 mph becoming west northwest in the afternoon. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms. Tonight A 10 percent chance of showers and thunderstorms before 7pm. Mostly clear, with a low around 43. West northwest wind around 5 mph becoming light and variable in the evening. Saturday Sunny, with a high near 66. Light and variable wind becoming west 5 to 8 mph in the afternoon. Saturday Night Mostly cloudy, then gradually becoming clear, with a low around 47. West northwest wind 5 to 7 mph becoming calm in the evening. Sunday Sunny, with a high near 70. Light and variable wind becoming west 5 to 8 mph in the afternoon. Sunday Night Clear, with a low around 46. Monday Sunny, with a high near 71. Monday Night Clear, with a low around 48. Tuesday Sunny, with a high near 74. Tuesday Night Clear, with a low around 50. Wednesday Sunny, with a high near 75. Wednesday Night Mostly clear, with a low around 49. Thursday Sunny, with a high near 71.
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: