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Jan Null, CCM @ggweather.bsky.social · 7h

Ideal conditons, with warm air over cold Half Moon Bay waters, did not disappoint with this triple Green Flash. 10/3/2026

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Jan Null, CCM @ggweather.bsky.social · 26/09/2026

Through a break in the clouds, tonight's Harvest Moon over Half Moon Bay.

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Jan Null, CCM @ggweather.bsky.social · 16/09/2026

Last night's 16% waxing crescent moon. This is about an hour after sunset and there's just a hint of residual color. 9/14/2026

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Jan Null, CCM @ggweather.bsky.social · 15/09/2026

Tonight's MIlky Way and Pigeon Point Lighthouse standing tall together under beautifully clear skies on the coast. 9/14/2026

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Jan Null, CCM @ggweather.bsky.social · 13/09/2026

It's a good day when your planning pays off and you get a twofer! First a Green Flash at Pigeon Point Lighthouse (and if you zoom in a flight of pelicans), and then a tiny 4% sliver of the waxing Crescent Moon right after sunset. 9/12/2026

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Jan Null, CCM @ggweather.bsky.social · 12/09/2026

A look at the past 6 Euro Multi-Model Mean Ensemble Niño 3.4 forecasts relative to the observed. The observed is running below the three latest (Jul, Aug, Sep) runs. [Note: the observed and forecasts are for the ONI 3,4 and not the RONI 3.4, which runs about 0.8 to 1.0°C cooler.]

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Jan Null, CCM @ggweather.bsky.social · 08/09/2026

An elevated #GreenFlash over Half Moon Bay was a nice way to wind up the long weekend. 9/7/2026

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Jan Null, CCM @ggweather.bsky.social · 07/09/2026

For the 5th consecutive week, the Relative Niño 3.4 region has been struck at +1.8, This puts it slightly lower than 1997, but note that 1997 took a slight dip in mid-Sept. Overall, the distribution of SSTA across the tropical Pacific remains most similar between 2026 and 1997.

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Jan Null, CCM @ggweather.bsky.social · 07/09/2026

Two bees, or not two bees; that is a sunflower.

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Jan Null, CCM @ggweather.bsky.social · 06/09/2026

Mid clouds from the sub-tropics lit up over Pillar Point with tonight's sunset. 9/5/2026

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Jan Null, CCM @ggweather.bsky.social · 05/09/2026

A beautiful evening for a drive down the coast to Pigeon Point Light Station State Historic Park. 9/4/2026

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Jan Null, CCM @ggweather.bsky.social · 30/08/2026

Normally a bright moon and the Milky Way are mutually exclusive. But my plan to get to Pigeon Point right after full darkness and just when the moon was rising in the east, came together. The moon did wash out the Milky Way a bit, but it nicely sidelit the lighthouse and adjacent trees. 8/29/2026

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Jan Null, CCM @ggweather.bsky.social · 30/08/2026

This is a shot that I have always wanted to get; a sailboat silhouetted by the sunset. And the passing gull was a nice bonus. Half Moon Bay, 8/29/2026

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Jan Null, CCM @ggweather.bsky.social · 03/08/2026

The Sunday sunset photobombed by a pelican.

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Jan Null, CCM @ggweather.bsky.social · 30/07/2026

The Full Moon getting slightly photobombed by a plane rising out of SFO. And this was after it was too foggy in Half Moon Bay, and I headed south to San Gregorio to find a break in the clouds. 7/29/2026

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Jan Null, CCM @ggweather.bsky.social · 15/07/2026

Clear skies? √ No moon? √ Let's head to Pigeon Point at10:30 pm for the Milky Way! √ 7/14/2026

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Jan Null, CCM @ggweather.bsky.social · 13/07/2026

Over the past month, the weekly RONI 3.4 has been tracking right along with 1997, the warmest of the other strong/very strong El Niños at this point in the season.

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Jan Null, CCM @ggweather.bsky.social · 13/07/2026

Sunday sunset color at Pigeon Point Light Station State Historic Park. 7/12/2026

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Jan Null, CCM @ggweather.bsky.social · 30/06/2026

It was too foggy along the coast so I popped over to Crystal Springs Reservoir for tonight's Full Strawberry Moon. 6/29/2026

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Jan Null, CCM @ggweather.bsky.social · 28/06/2026

Sunset at Mirada Bridge, Half Moon Bay, 6/27/2026

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Jan Null, CCM @ggweather.bsky.social · 22/06/2026

An updated and more detailed climatology of California Precipitation during Strong and Very Strong El Niño events can be found at www.ggweather.com/ca_enso2026/... . The climatology for all El Niño events has also been updated and improved at www.ggweather.com/ca_enso2026/...

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Jan Null, CCM @ggweather.bsky.social · 11/06/2026

Lots of fun atmospherics with multiple stratified layers to refract tonight's setting sun in some unique ways. 6/10/2026

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Jan Null, CCM @ggweather.bsky.social · 08/06/2026

I am a meteorologist & founder of NoHeatstroke.org, with informaton related to Pediatric Vehicular Heatstroke; and owned by two Vizslas. I recently developed an infographic related to kids in hot cars, and thought it important to adapt it for the pet community.

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Jan Null, CCM @ggweather.bsky.social · 06/06/2026

Ending the week on a colorful note, as a band of high (altocumulus) clouds helped brighten the Friday sunset over Half Moon Bay. 6/5/2026

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Jan Null, CCM @ggweather.bsky.social · 02/06/2026

I've developed a new vehicle heating infographic. Please share and maybe save a life!. More at www.noheatstroke.org

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Jan Null, CCM @ggweather.bsky.social · 01/06/2026

Sunday night Full Moon over the Coast Range east of Half Moon Bay. 5/31/2026

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Jan Null, CCM @ggweather.bsky.social · 01/06/2026

Most of northern and central California remain within about 10% of normal, while much of the south state is well above normal, mostly on the basis of heavy rains in Nov and Dec.

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Jan Null, CCM @ggweather.bsky.social · 31/05/2026

Tonight's Full Moon rising over the Santa Cruz Mountains, and silhouetting the stark remnents of the 2020 CZU Fire. Shot for Pigeon Point. 5/30/2026

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Jan Null, CCM @ggweather.bsky.social · 31/05/2026

When planning and the fog cooperate! Shot from near Gazos State Beach, about 2 miles south of Pigeon Point. 5/30/2026

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Jan Null, CCM @ggweather.bsky.social · 28/05/2026

For an excellent perspective into what goes into understanding ENSO data and producing ENSO forecasts, take the time to watch: "Navigating Uncertainty in Operational El Niño and La Niña Predictions" by Michelle L'Heureux - NOAA CPC. See www.youtube.com/watch?v=6PZY...

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Jan Null, CCM @ggweather.bsky.social · 27/05/2026

7:05 pm. Flow around an area of low pressure aloft over north-central Oregon is triggering some thunderstorms down the Sacramento and the northern San Joaquin Valley and adjacent foothills.

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Jan Null, CCM @ggweather.bsky.social · 22/05/2026

It's more than just a 3-day weekend!

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Jan Null, CCM @ggweather.bsky.social · 18/05/2026

A tiny (2.7%) sliver of the waxing crescent moon over Half Moon Bay. 5/17/2026

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Jan Null, CCM @ggweather.bsky.social · 16/05/2026

The first clear skies and moonless night in over a month got me up for this 4:30 am shot of our magical MIlky Way at Pigeon Point Lighthouse. 5/16/2026

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Jan Null, CCM @ggweather.bsky.social · 15/05/2026

One of tonight's Jeopardy categories was "WARNING WORTHY WEATHER". Good luck.

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Jan Null, CCM @ggweather.bsky.social · 14/05/2026

The May CPC ENSO Outlook has just been posted, with signs continuing to point toward at least a strong El Niño next fall and winter. Note that the term "Super" is nowhere to be seen, but rather "Very Strong" for a RONI of > 2.0°C.

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Jan Null, CCM @ggweather.bsky.social · 13/05/2026

Choppy seas on a foggy morning. Surfers Beach.

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Jan Null, CCM @ggweather.bsky.social · 10/05/2026

Wishing all the Moms an otterly fantastic day!

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Jan Null, CCM @ggweather.bsky.social · 08/05/2026

Some context to consider about the latest ECMWF Niño3.4 forecast. Looking at the past 9-years of May forecasts, there appears to be a strong warm bias. They are also based old 981-2010 climatology and the old ONI and not the newer RONI. Caveat emptor.

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Jan Null, CCM @ggweather.bsky.social · 06/05/2026

The Peregine Falcon chicks must have been taking a nap, while mom and dad were keeping an eye on thinks near the nesting area. Devil's Slide, 5/6/2026.

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Jan Null, CCM @ggweather.bsky.social · 05/05/2026

With the upper level low centered near Santa Barbara, we are seeing some "backdoor" showers spreading into the Bay Area from the northeast. They are relatively high-based and rainfall amounts should be minimal

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Jan Null, CCM @ggweather.bsky.social · 01/05/2026

April rainfall boosted many areas of Northern and Central California by as much as 10%.

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Jan Null, CCM @ggweather.bsky.social · 01/05/2026

May 1, 2026, is National Heatstroke Prevention Day. A day to raise awareness about the hazards of children dying due to heatstroke inside hot cars. Take a moment to check out and SHARE the materials below and at NoHeatstroke.org. Thanks for any assistance in helping to save young, precious lives!

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Jan Null, CCM @ggweather.bsky.social · 27/04/2026

April's storms have kept the important Sierra Nevada and Cascade watertsheds at or above normal, and these indices account for both rainfall and snowfall.

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Jan Null, CCM @ggweather.bsky.social · 24/04/2026

Pillar Point Harbor, Princeton, and El Granada from the air flying out of SFO. 4/23/2026 #alwaysgetawindowseat

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Jan Null, CCM @ggweather.bsky.social · 22/04/2026

7:02 am. A NCFR (Narrow Cold-Frontal Rainband) overhead in Half Moon Bay, limiting visibility to about 50 yards and sounding like a herd of elephants on the roof!

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