349
FXUS66 KMTR 081756
AFDMTR

Area Forecast Discussion
National Weather Service San Francisco CA
1056 AM PDT Wed May 8 2024

...New AVIATION...

.SYNOPSIS...
Issued at 300 AM PDT Wed May 8 2024

A warming trend begins Wednesday as offshore winds develop, with a
Wind Advisory in effect for the North Bay Interior Mountains until
Thursday morning. Warmest temperatures are expected Thursday and
Friday before a slight cooldown into the early part of next week.

&&

.UPDATE...
Issued at 922 AM PDT Wed May 8 2024

Temperatures across the greater SF Bay Area are running around 10
to 15 degrees warmer than this time yesterday, with more mixed
signals across the Central Coast. Meanwhile, gusty winds continue
in the North Bay interior mountains. Peak gust reports include a
72 mph gust at the Santa Fe Geothermal PGE station, a 61 mph gust
at Mount Saint Helena, a 50 mph gust on Blue Ridge Road South, and
a 61 mph gust on Mount Diablo. No changes to the forecast.

DialH

&&

.SHORT TERM...
(Today and tonight)
Issued at 300 AM PDT Wed May 8 2024

Clear sky conditions continue across the region this morning and
offshore winds have developed aloft. This will result in a warming
trend today with temperatures reaching the low-to-mid 80`s across
the interior while 60`s will be common near the coast (70`s in
places such as Santa Cruz). A Wind Advisory remains in effect for
the North Bay Interior Mountains with gusts expected to reach 45 mph
and may exceed 55 mph in the Mayacamas Mountains through Thursday
morning. Gusts in the East Bay Hills are not expected to be
widespread enough to warrant an advisory, but Mount Diablo is
expected to see similarly strong, gusty winds.

Overnight lows will be warmest in the North Bay and interior part of
the East Bay given the offshore flow with temperatures only expected
to cool into the mid-to-upper 50`s (lower 60`s in the highest
peaks). Elsewhere, upper 40`s to mid 50`s are expected overnight.

&&

.LONG TERM...
(Thursday through Tuesday)
Issued at 300 AM PDT Wed May 8 2024

The warming trend continues into the early part of the upcoming
weekend, with Thursday and Friday expected to be the warmest days of
the week. High temperatures will range from the upper 60`s to lower
70`s near the coast (lower 80`s in places such as Santa Cruz and
downtown San Francisco), to the upper 80`s to lower 90`s inland,
especially by Friday.

From previous forecaster: "The seasonably warm temperatures are
causing a minor to moderate HeatRisk, meaning that a low to moderate
risk for heat related illnesses exists for vulnerable populations
(children, the elderly, pregnant women, or those without adequate
shelter or cooling), with moderate HeatRisk values concentrated in
the interior regions of the North, East, and South Bays.

With the significant warm up expected for the rest of the week,
here`s a reminder of some heat safety tips:

* Stay hydrated and drink plenty of fluids.
* Wear lightweight, light-colored clothing.
* Reduce time spent outdoors or stay in the shade.
* Never leave people or pets unattended in vehicles.
* Use sunscreen if going to the coast or the pool.

The heat should start to abate on Sunday as onshore flow returns to
the region, but temperatures warmer than the seasonal averages are
expected to continue for the foreseeable future, with CPC products
stating that temperatures above seasonal averages continue into the
third week of May."

&&

.AVIATION...
(18Z TAFS)
Issued at 1044 AM PDT Wed May 8 2024

VFR through taf period. As mentioned with previous taf package,
biggest impact to terminals the next 24-36 hours will be the
winds. While surface winds will be breezy at times there will be
bursts of offshore flow, especially tonight. The gusty offshore
flow 2000-2500 ft will lead to lower end LLWS for the N Bay, E
Bay, and SF Bay.

Vicinity of SFO...VFR...N to NW flow with gusts 25-30 kt through
this evening. Easing at the surface tonight as offshore (NE)
increases aloft with some LLWS.

SFO Bridge Approach...similar to SFO.

Monterey Bay Terminals...VFR. Similar to this morning a few patchy
cigs may be over MRY Bay Thursday AM.

&&

.MARINE...
(Today through Monday)
Issued at 908 AM PDT Wed May 8 2024

High pressure to the north and low pressure to the south will
maintain moderate to locally strong northerly winds over the
coastal waters and bays through tonight. The stronger northerly
winds will result if fresh steep swell today. By Friday, winds
are largely light to moderate across much of the waters. Wave
heights gradually diminish to around 5 to 7 feet by late week. Dry
weather continues through the forecast period as high pressure
dominates.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
CA...Wind Advisory until 8 AM PDT Thursday for CAZ504.

PZ...Small Craft Advisory until 9 PM PDT this evening for SF Bay N of
     Bay Bridge.

     Small Craft Advisory from 3 PM this afternoon to 9 PM PDT this
     evening for Mry Bay-Pt Arena to Pt Reyes 0-10 nm.

     Small Craft Advisory until 9 PM PDT this evening for Pigeon Pt
     to Pt Pinos 0-10 nm-Pt Pinos to Pt Piedras Blancas 0-10 nm.

     Gale Warning until 3 PM PDT this afternoon for Pt Arena to Pt
     Reyes 10-60 NM.

     Small Craft Advisory until 3 AM PDT Thursday for Pigeon Pt to Pt
     Pinos 10-60 NM.

&&

$$

SHORT TERM...RGass
LONG TERM....RGass
AVIATION...MM
MARINE...MM

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