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Posts by Jan Null, CCM

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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!

1 day ago 3 0 0 0
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7:30 am. Bands of showers continuing to rotate toward the Bay Area, with a cluster of thunderstorms about 150 miles (~3 hours?) southwest of Santa Cruz.

2 days ago 3 1 0 0
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Following yesterday's tornado near Vina, there were several media comments/inquiries along the lines of "I thought California doesn't get tornadoes". Yes we do; on average 6.4 tornadoes per year! See the updated California Tornado Climatology at ggweather.com/ca_tornado.htm .

1 week ago 14 4 0 1
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5:38pm. Radar showing the past 2-hours as the region is was plummeted by a Narrow Cold-Frontal Rainband (NCFR). Rain will decrease but continue off and on into Sunday with the possibility of a thunderstorm or two.

1 week ago 8 0 0 0
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On Wednesday, and for the first time ever, there was a Climatology category on Jeopardy. Enjoy.

1 week ago 23 5 1 0
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The hyperbole is cranking up again about a "Super El Niño" with the latest ECMWF ONI forecast. But for context, the April 2025 ECMWF forecast (and observed) is attached. Warm bias?

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Golden Hour last night at Pigeon Point. Imagine yourself sitting on the bench, listening to the surf, and watching the sun set. 4/5/2026

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Peregrine Falcons at Devil's Slide. 1) Mom on nest. 2) Mom launches to meet Dad. 3) Mom on right with small bird that Dad brought back to share. 4) Mom eating. 5) Mom headed back to nest with bird remains. 6) Mom feeding chicks. There are 4 total. 4/5/2026

2 weeks ago 27 3 1 0

If you also follow me on X (Twitter) that account got hacked. My new account is @ggweather2026. Thanks.

2 weeks ago 1 0 0 0
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A Great Blue Heron on a successful hunt. (Condolences to the family of the vole.) Coastal Trail near Miramar Beach, Half Moon Bay.

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Water supply is generally in good shape statewide, but the heat and early snowmelt are a concern in regard to the upcoming fire season.

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Precipitation the past 2-days in the Nrn Sierra/Shasta area has pushed seasonal totals back up to 100% of normal. The 8-Station Index, reflects the Sacramento drainage and about 1/3 of the state's water supply, and is arguably the single most important water metric in Calif.

3 weeks ago 8 1 1 0
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No fooling, it's April.

3 weeks ago 2 0 0 0

And I would be remiss not to mention that this does not look like a "typical" la Niña pattern or most of the pre-winter forecasts.

3 weeks ago 1 0 0 0
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Despite an abysmal March, earlier storms have kept most statewide precip numbers above normal to date. Even with no additonal rain, these number will only drop about 10% thru June. ggweather.com/seasonal_rai... .

3 weeks ago 11 5 1 1
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March 29th is National Vietnam War Veterans Day and honors the 3 million Americans who served in-country during the war, and 58,281 men and women made the ultimate sacrifice.

3 weeks ago 5 1 1 0
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For us selenophiles, even an 83% Waxing Gibbous Moon is worthy of our attention and fascination. Half Moon Bay, 3/28/2026

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Lots of Friday sunset color at Pescadero State Beach. 3/37/2026

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Historic El Nino and La Nina Precipitation Analyses

yes, but to a lesser extent. See ggweather.com/enso2023/us_...

4 weeks ago 1 0 0 0
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There has been a lot of hyperbole of late about the possibility of Strong or Very Strong El Niño next winter. So, what has happened in the past? At almost any spot you pick, it was either wet or dry!! There are no "typical" ENSO events. See ggweather.com/enso2023/us_...

4 weeks ago 13 5 1 0
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Not likely, but not impossible.

4 weeks ago 3 1 0 0
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Woke up early. Checked for clear skies. Drove to Pigeon Point Lighthouse at 4:30! But I think it was worth it. 3/24/2026

4 weeks ago 16 4 0 1
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A bit of a muted sunset over Pillar Point, shot from under the Mirada Bridge. 3/22/2026

1 month ago 14 2 0 0
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The tiniest sliver of the moon, only 1.5% illuminated, that I have ever captured. Half Moon Bay, 8:10 pm, 3/19/2026

1 month ago 29 4 4 1
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Brian, HMB's resident Great Blue Heron, evidently likes worms! Amongst the wet dewy grass this morning, he caught and ate about a half dozen of little wigglers in 5 minutes. 3/19/2026

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