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Jan Null, CCM

@ggweather.bsky.social

640 followers 150 following 180 posts

SF Bay Area meteorologist for five decades, first as an NWS forecaster and then as founder of Golden Gate Weather Services. Serious amateur photographer.

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Jan Null, CCM @ggweather.bsky.social · 2d

NOAA has forecast a weak La NIña. But with that comes great uncertainty. The last 2 weak La Niña winters show vastly different outcomes. (Last year did not reach the 5-month threshold to officially be a La Niña). There are no simple teleconnections looking at ENSO events alone.

Jan Null, CCM @ggweather.bsky.social · 3d

Pigeon Point Lighthouse in silhouette as the setting sun plays peek-a-boo with the forming fog layer. 10/8/2025

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Jan Null, CCM @ggweather.bsky.social · 5d

Tonight's full Harvest Moon rising over the Coast Range east of Half Moon Bay. 10/6/2025

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Jan Null, CCM @ggweather.bsky.social · 5d

This female Annas Hummingbird amongst the passion flowers along our back fence at lunchtime. 10/6/2025

Jan Null, CCM @ggweather.bsky.social · 6d

"Moon in the sky like a big pizza pie, that's amore"; at least for my fellow selenophiles. After being blocked as it rose, tonight's 98.5% full moon rose above the fog and called to me. 10/5/2025

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Jan Null, CCM @ggweather.bsky.social · 8d

Pelican photo-bombing the sunset. Half Moon Bay. 10/3/2025

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Jan Null, CCM @ggweather.bsky.social · 11d

The Rockies are ablaze with color right now! This is from this morning west of Boulder. 9/30/2025

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Jan Null, CCM @ggweather.bsky.social · 15d

A hazy Green Flash over Half Moon Bay. 9/26/2025

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Jan Null, CCM @ggweather.bsky.social · 17d

A rainbow sherbet sunset at Pigeon Point Light Station State Historic Park and in the opposite direction a rainbow. Win-win. 9/24/2025

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Jan Null, CCM @ggweather.bsky.social · 19d

In going back through last night's pix, I found a shot from a different angle of the Milky Way (and about a gazillion stars) at Pigeon Point Lighthouse. 9/20/2025

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Jan Null, CCM @ggweather.bsky.social · 20d

The Milky Way at Pigeon Point Lighthouse on a rare moonless clear night. 9/20/2025

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Jan Null, CCM @ggweather.bsky.social · 21d

Luna and Cassie on a Saturday morning at the Golden Gate Bridge. 9/20/2025

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Jan Null, CCM @ggweather.bsky.social · 23d

A fiery sunset as high clouds from the remnant of former Tropical Storm Mario moved in and the low clouds moved out! 9/17/2025

Jan Null, CCM @ggweather.bsky.social · 26d

Pillar Point wearing its solar halo! 9/15/2025

Jan Null, CCM @ggweather.bsky.social · 26d

While Sea Surface Temperatures Anomalies (SSTA) edge toward La NIña territory in the tropics, the north Pacific continues to warm. Here's a comparison of Pacific SSTAs in mid-Sept for the past 7 years.

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Jan Null, CCM @ggweather.bsky.social · 28d

The Green Flash and pelicans offshore from Mavericks. 9/13/2025

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Jan Null, CCM @ggweather.bsky.social · Sep 9

Go outside and breathe in some fresh air. Can you smell the sweet slightly pungent smell of this morning's rain on the soil? Enjoy.

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Jan Null, CCM @ggweather.bsky.social · Sep 9

Pre-sunset lenticular over the Coast Range east of Half Moon Bay this evening.

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

A quick snap of Pigeon Point Lighthouse before the fog started rolling in. 9/6/2025

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

The fog in Half Moon Bay chased me south to Pigeon Point to catch the Full "Corn" Moon (aka Harvest Moon) rising over the Santa Cruz Mtns. 9/6/2025

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Jan Null, CCM @ggweather.bsky.social · Sep 1

Layers of warm air along the coast were the right ingredients for a stratified sunset topped by an emerald Green Flash. (Zoom in) Half Moon Bay. 8/31/2025

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Jan Null, CCM @ggweather.bsky.social · Aug 30

Can you say Bay Area microclimates? A 29° difference between the coast and the east side of Crystal Springs. In SF there was a 20° difference between Ocean Beach (66°) and Potrero Pt (86°).

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Jan Null, CCM @ggweather.bsky.social · Aug 30

No Fog.✅ Low Tide-10:31pm.✅ Moonset-10:45pm.✅ Okay, let's go to the beach at 11:00pm and take some Milky Way pix.

Jan Null, CCM @ggweather.bsky.social · Aug 30

Green Flash photobombed by a pelican. Half Moon Bay. 8/29/2025

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Jan Null, CCM @ggweather.bsky.social · Aug 28

The sun and the moon at Pigeon Point Lighthouse. 8/27/2025