Half Moon Bay Airport Weather Forecast Discussion

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FXUS66 KMTR [Monterey CA] 292129 AFDMTR ∨

FXUS66 KMTR 292129
AFDMTR [HEAD]

National Weather Service San Francisco Bay Area California 2:29pm PDT Thu Jul 29 2010 ∨

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA CA
229 PM PDT THU JUL 29 2010 [HEAD]

Discussion. As of 2:00pm PDT Thursday… satellite imagery is indicate patchy fog along the coast with mostly sunny skies inland. The Fort Ord profiler [instrument designed to measure horizontal winds directly above its location, and thus measure the vertical wind profile. Profilers operate on the same principles as Doppler radar.] is indicate that the marine inversion is near 1600 feet. Temps aloft have also warmed… 22.3°C at 2500 ASL. The gradient picture is showing a northerly gradient of 1.8 mb between Arcata-SFO [San Francisco CA] and an onshore gradient of 2.1 mb between SFO [San Francisco CA]-SAC [Sacramento CA]. Temps are in the upper 50s and 60s along the coast… 60s around the bays and 70s to lower 80s inland. In southern interior sections of Monterey and San Benito Counties temps have reached the lower to mid 90s. ∨

.DISCUSSION...AS OF 2:00 PM PDT THURSDAY...SATL IMAGERY IS INDC
PATCHY FOG ALONG THE COAST WITH MOSTLY SUNNY SKIES INLAND. THE FT ORD
PROFILER IS INDC THAT THE MARINE INVERSION IS NEAR 1600 FEET. TEMPS
ALOFT HAVE ALSO WARMED...22.3C AT 2500 ASL. THE GRADIENT PICTURE IS
SHOWING A NORTHERLY GRADIENT OF 1.8 MB BETWEEN ARCATA-SFO AND AN
ONSHORE GRADIENT OF 2.1 MB BETWEEN SFO-SAC. TEMPS ARE IN THE UPPER
50S AND 60S ALONG THE COAST...60S AROUND THE BAYS...AND 70S TO LOWER
80S INLAND. IN SOUTHERN INTERIOR SECTIONS OF MONTEREY AND SAN BENITO
COUNTIES TEMPS HAVE REACHED THE LOWER TO MID 90S. [DISC]

Upper low lifts to the NE on Friday… however a longwave trough will stretch southwest into the eastern Pacific. While there will be some warming… temps will only reach to near normal. Another upper low develops off the Pacific Northwest coast on Sunday continuing the onshore flow and slightly cooler temps. This upper low lifts NE on Monday… but a longwave trough remains along the coast right through the end of next week. ∨

UPPER LOW LIFTS TO THE NE ON FRIDAY...HOWEVER A LONGWAVE TROUGH WILL
STRETCH SOUTHWEST INTO THE EASTERN PACIFIC. WHILE THERE WILL BE SOME
WARMING...TEMPS WILL ONLY REACH TO NEAR NORMAL. ANOTHER UPPER LOW
DEVELOPS OFF THE PACIFIC NW COAST ON SUNDAY CONTINUING THE ONSHORE
FLOW AND SLIGHTLY COOLER TEMPS. THIS UPPER LOW LIFTS NE ON MONDAY...
BUT A LONGWAVE TROUGH REMAINS ALONG THE COAST RIGHT THROUGH THE END
OF NEXT WEEK. [DISC]

The bottom line is that temps will be near to a bit below normal for the next week with night/morning low clouds and fog… along the coast and into the valleys. No significant heat in sight for the district. ∨

THE BOTTOM LINE IS THAT TEMPS WILL BE NEAR TO A BIT BELOW NORMAL FOR
THE NEXT WEEK WITH NIGHT/MORNING LOW CLOUDS AND FOG...ALONG THE COAST
AND INTO THE VALLEYS. NO SIGNIFICANT HEAT IN SIGHT FOR THE DISTRICT. [DISC]

Aviation. As of 10:30am PDT Thursday… visible satellite image is similar to yesterday with stratus burning off of the San Francisco Bay Area as well the the Monterey Bay Area. Expect typical diurnal winds and stratus to return this evening. ∨

.AVIATION...AS OF 10:30 AM PDT THURSDAY...VISIBLE SATELLITE IMAGE IS
SIMILAR TO YESTERDAY WITH STRATUS BURNING OFF OF THE SAN FRANCISCO
BAY AREA AS WELL THE THE MONTEREY BAY AREA. EXPECT TYPICAL DIURNAL
WINDS AND STRATUS TO RETURN THIS EVENING. [AVIA]

Vicinity of KSFO [San Francisco CA]… CAVU [Ceiling And Visibility Unlimited] with afternoon winds after 21Z [2pm PDT] 18 gusting to 25 kts [29 mph] as onshore surface pressure gradient slightly higher than yesterday. Stratus returning by 0900Z [2am PDT] this evening. ∨

VICINITY OF KSFO... CAVU WITH AFTERNOON WINDS AFTER 21Z 18G25KTS AS
ONSHORE SURFACE PRESSURE GRADIENT SLIGHTLY HIGHER THAN YESTERDAY.
STRATUS RETURNING BY 0900Z THIS EVENING. [AVI2]

KSFO [San Francisco CA] bridge approach… same as KSFO [San Francisco CA]. ∨

KSFO BRIDGE APPROACH...SAME AS KSFO. [AVI2]

Monterey Bay Area terminals… MVFR [Marginal Visual Flight Rules] overcast cig010–012. Becoming CAVU [Ceiling And Visibility Unlimited] by 1930Z [12:30pm PDT] for KMRY [Monterey CA] and 18Z [11am PDT] for KSNS [Salinas CA]. Afternoon winds at KMRY [Monterey CA] after 21Z [2pm PDT] west 11 gusting to 16 kts [18 mph] and KSNS [Salinas CA] 15 gusting to 20 kts [23 mph]. Stratus returning with MVFR [Marginal Visual Flight Rules] ceiling overcast 010 around 06Z [11pm PDT] this evening. ∨

MRY BAY AREA TERMINALS...MVFR OVC CIG010-012. BECOMING CAVU BY 1930Z
FOR KMRY AND 18Z FOR KSNS. AFTERNOON WINDS AT KMRY AFTER 21Z WEST
11G16KTS AND KSNS 15G20KTS. STRATUS RETURNING WITH MVFR CIG OVC010
AROUND 06Z THIS EVENING. [AVI2]

MTR Watches/Warnings/Advisories

This evening…Small Craft Advisory…San Francisco Bay. ∨

.MTR WATCHES/WARNINGS/ADVISORIES...
THIS EVE...SCA...SAN FRANCISCO BAY. [WARN]

Public Forecast: MHS; Aviation/Marine: Larry ∨

PUBLIC FORECAST: MHS
AVIATION/MARINE: LARRY [CRED]

NWS ON THE WEB AT WEATHER.GOV/SANFRANCISCO [LINK]

Point Forecast

Half Moon Bay Airport

2:45pm PDT Jul 29 2010

Tonight: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 54°. WNW wind between 6 and 10 mph.

Friday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 61°. West wind between 7 and 14 mph.

Friday Night: Patchy fog after 11pm. Otherwise, cloudy, with a low around 54°. West wind between 8 and 15 mph, with gusts as high as 20 mph.

Saturday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 61°. West wind between 8 and 13 mph.

Saturday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 54°. West wind between 9 and 14 mph.

Sunday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 61°.

Sunday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 53°.

Monday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 60°.

Monday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 54°.

Tuesday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 58°.

Tuesday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 54°.

Wednesday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 58°.

Wednesday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 54°.

Thursday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 59°.

Tonight: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 54. West northwest wind between 6 and 10 mph.

Friday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 61. West wind between 7 and 14 mph.

Friday Night: Patchy fog after 11pm. Otherwise, cloudy, with a low around 54. West wind between 8 and 15 mph, with gusts as high as 20 mph.

Saturday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 61. West wind between 8 and 13 mph.

Saturday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 54. West wind between 9 and 14 mph.

Sunday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 61.

Sunday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 53.

Monday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 60.

Monday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 54.

Tuesday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 58.

Tuesday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 54.

Wednesday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 58.

Wednesday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 54.

Thursday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 59.

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:

Weather NWS glossary About NWS point forecasts Hourly Weather Graph Radar Satellite Max Temps Graphical Forecast	Area Forecast Discussion FXUS66 KMTR [Monterey CA] 292129 AFDMTR ∨ FXUS66 KMTR 292129 AFDMTR [HEAD] National Weather Service San Francisco Bay Area California 2:29pm PDT Thu Jul 29 2010 ∨ AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA CA 229 PM PDT THU JUL 29 2010 [HEAD] Discussion. As of 2:00pm PDT Thursday… satellite imagery is indicate patchy fog along the coast with mostly sunny skies inland. The Fort Ord profiler [instrument designed to measure horizontal winds directly above its location, and thus measure the vertical wind profile. Profilers operate on the same principles as Doppler radar.] is indicate that the marine inversion is near 1600 feet. Temps aloft have also warmed… 22.3°C at 2500 ASL. The gradient picture is showing a northerly gradient of 1.8 mb between Arcata-SFO [San Francisco CA] and an onshore gradient of 2.1 mb between SFO [San Francisco CA]-SAC [Sacramento CA]. Temps are in the upper 50s and 60s along the coast… 60s around the bays and 70s to lower 80s inland. In southern interior sections of Monterey and San Benito Counties temps have reached the lower to mid 90s. ∨ .DISCUSSION...AS OF 2:00 PM PDT THURSDAY...SATL IMAGERY IS INDC PATCHY FOG ALONG THE COAST WITH MOSTLY SUNNY SKIES INLAND. THE FT ORD PROFILER IS INDC THAT THE MARINE INVERSION IS NEAR 1600 FEET. TEMPS ALOFT HAVE ALSO WARMED...22.3C AT 2500 ASL. THE GRADIENT PICTURE IS SHOWING A NORTHERLY GRADIENT OF 1.8 MB BETWEEN ARCATA-SFO AND AN ONSHORE GRADIENT OF 2.1 MB BETWEEN SFO-SAC. TEMPS ARE IN THE UPPER 50S AND 60S ALONG THE COAST...60S AROUND THE BAYS...AND 70S TO LOWER 80S INLAND. IN SOUTHERN INTERIOR SECTIONS OF MONTEREY AND SAN BENITO COUNTIES TEMPS HAVE REACHED THE LOWER TO MID 90S. [DISC] Upper low lifts to the NE on Friday… however a longwave trough will stretch southwest into the eastern Pacific. While there will be some warming… temps will only reach to near normal. Another upper low develops off the Pacific Northwest coast on Sunday continuing the onshore flow and slightly cooler temps. This upper low lifts NE on Monday… but a longwave trough remains along the coast right through the end of next week. ∨ UPPER LOW LIFTS TO THE NE ON FRIDAY...HOWEVER A LONGWAVE TROUGH WILL STRETCH SOUTHWEST INTO THE EASTERN PACIFIC. WHILE THERE WILL BE SOME WARMING...TEMPS WILL ONLY REACH TO NEAR NORMAL. ANOTHER UPPER LOW DEVELOPS OFF THE PACIFIC NW COAST ON SUNDAY CONTINUING THE ONSHORE FLOW AND SLIGHTLY COOLER TEMPS. THIS UPPER LOW LIFTS NE ON MONDAY... BUT A LONGWAVE TROUGH REMAINS ALONG THE COAST RIGHT THROUGH THE END OF NEXT WEEK. [DISC] The bottom line is that temps will be near to a bit below normal for the next week with night/morning low clouds and fog… along the coast and into the valleys. No significant heat in sight for the district. ∨ THE BOTTOM LINE IS THAT TEMPS WILL BE NEAR TO A BIT BELOW NORMAL FOR THE NEXT WEEK WITH NIGHT/MORNING LOW CLOUDS AND FOG...ALONG THE COAST AND INTO THE VALLEYS. NO SIGNIFICANT HEAT IN SIGHT FOR THE DISTRICT. [DISC] Aviation. As of 10:30am PDT Thursday… visible satellite image is similar to yesterday with stratus burning off of the San Francisco Bay Area as well the the Monterey Bay Area. Expect typical diurnal winds and stratus to return this evening. ∨ .AVIATION...AS OF 10:30 AM PDT THURSDAY...VISIBLE SATELLITE IMAGE IS SIMILAR TO YESTERDAY WITH STRATUS BURNING OFF OF THE SAN FRANCISCO BAY AREA AS WELL THE THE MONTEREY BAY AREA. EXPECT TYPICAL DIURNAL WINDS AND STRATUS TO RETURN THIS EVENING. [AVIA] Vicinity of KSFO [San Francisco CA]… CAVU [Ceiling And Visibility Unlimited] with afternoon winds after 21Z [2pm PDT] 18 gusting to 25 kts [29 mph] as onshore surface pressure gradient slightly higher than yesterday. Stratus returning by 0900Z [2am PDT] this evening. ∨ VICINITY OF KSFO... CAVU WITH AFTERNOON WINDS AFTER 21Z 18G25KTS AS ONSHORE SURFACE PRESSURE GRADIENT SLIGHTLY HIGHER THAN YESTERDAY. STRATUS RETURNING BY 0900Z THIS EVENING. [AVI2] KSFO [San Francisco CA] bridge approach… same as KSFO [San Francisco CA]. ∨ KSFO BRIDGE APPROACH...SAME AS KSFO. [AVI2] Monterey Bay Area terminals… MVFR [Marginal Visual Flight Rules] overcast cig010–012. Becoming CAVU [Ceiling And Visibility Unlimited] by 1930Z [12:30pm PDT] for KMRY [Monterey CA] and 18Z [11am PDT] for KSNS [Salinas CA]. Afternoon winds at KMRY [Monterey CA] after 21Z [2pm PDT] west 11 gusting to 16 kts [18 mph] and KSNS [Salinas CA] 15 gusting to 20 kts [23 mph]. Stratus returning with MVFR [Marginal Visual Flight Rules] ceiling overcast 010 around 06Z [11pm PDT] this evening. ∨ MRY BAY AREA TERMINALS...MVFR OVC CIG010-012. BECOMING CAVU BY 1930Z FOR KMRY AND 18Z FOR KSNS. AFTERNOON WINDS AT KMRY AFTER 21Z WEST 11G16KTS AND KSNS 15G20KTS. STRATUS RETURNING WITH MVFR CIG OVC010 AROUND 06Z THIS EVENING. [AVI2] MTR Watches/Warnings/Advisories This evening…Small Craft Advisory…San Francisco Bay. ∨ .MTR WATCHES/WARNINGS/ADVISORIES... THIS EVE...SCA...SAN FRANCISCO BAY. [WARN] Public Forecast: MHS; Aviation/Marine: Larry ∨ PUBLIC FORECAST: MHS AVIATION/MARINE: LARRY [CRED] NWS ON THE WEB AT WEATHER.GOV/SANFRANCISCO [LINK]	Point Forecast Half Moon Bay Airport 2:45pm PDT Jul 29 2010 Tonight: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 54°. WNW wind between 6 and 10 mph. Friday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 61°. West wind between 7 and 14 mph. Friday Night: Patchy fog after 11pm. Otherwise, cloudy, with a low around 54°. West wind between 8 and 15 mph, with gusts as high as 20 mph. Saturday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 61°. West wind between 8 and 13 mph. Saturday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 54°. West wind between 9 and 14 mph. Sunday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 61°. Sunday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 53°. Monday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 60°. Monday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 54°. Tuesday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 58°. Tuesday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 54°. Wednesday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 58°. Wednesday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 54°. Thursday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 59°. Tonight: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 54. West northwest wind between 6 and 10 mph. Friday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 61. West wind between 7 and 14 mph. Friday Night: Patchy fog after 11pm. Otherwise, cloudy, with a low around 54. West wind between 8 and 15 mph, with gusts as high as 20 mph. Saturday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 61. West wind between 8 and 13 mph. Saturday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 54. West wind between 9 and 14 mph. Sunday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 61. Sunday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 53. Monday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 60. Monday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 54. Tuesday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 58. Tuesday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 54. Wednesday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 58. Wednesday Night: Patchy fog after 11pm. Otherwise, mostly cloudy, with a low around 54. Thursday: Patchy fog before 11am. Otherwise, mostly cloudy, with a high near 59.
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: