Jan Null, CCM
@ggweather.bsky.social
SF Bay Area meteorologist for five decades, first as an NWS forecaster and then as founder of Golden Gate Weather Services. Serious amateur photographer.
Tonight's almost (99%) Full Moon shot through a gap in some neighboring eucalyptus trees. With tomorrow's cloud cover somewhat problematic, I thought I would share tonight for all my fellow selenophiles. Half Moon Bay 1/31/2026
February 1, 2026 at 2:02 AM
Tonight's almost (99%) Full Moon shot through a gap in some neighboring eucalyptus trees. With tomorrow's cloud cover somewhat problematic, I thought I would share tonight for all my fellow selenophiles. Half Moon Bay 1/31/2026
Just a lonely gull at sunset. Jonathan Livingston?
January 30, 2026 at 1:55 AM
Just a lonely gull at sunset. Jonathan Livingston?
Last evening's front held together enough to end San Francisco's rainless streak at 20 days (Jan 7-26).
January 28, 2026 at 4:37 PM
Last evening's front held together enough to end San Francisco's rainless streak at 20 days (Jan 7-26).
Last evening's front held together enough to end San Francisco's rainless streak at 20 days (Jan 7-26).
January 28, 2026 at 4:35 PM
Last evening's front held together enough to end San Francisco's rainless streak at 20 days (Jan 7-26).
San Francisco's total seasonal rain to date has fallen to below normal for the first time since Dec 23rd. The 11.80" is 97% of the Jan 26 normal of 12.15". Santa Rosa and Livermore have also slipped to less than 100%. Statewide data: ggweather.com/seasonal_rai...
January 27, 2026 at 10:26 PM
San Francisco's total seasonal rain to date has fallen to below normal for the first time since Dec 23rd. The 11.80" is 97% of the Jan 26 normal of 12.15". Santa Rosa and Livermore have also slipped to less than 100%. Statewide data: ggweather.com/seasonal_rai...
A sublime sunrise across Pillar Point Harbor. 1/27/2026
January 27, 2026 at 3:49 PM
A sublime sunrise across Pillar Point Harbor. 1/27/2026
The 18% waxing crescent moon, with just a hint of post-sunset color. Half Moon Bay, 1/22/2026
January 23, 2026 at 2:25 AM
The 18% waxing crescent moon, with just a hint of post-sunset color. Half Moon Bay, 1/22/2026
It has been been 14 days since it last rained in San Francisco and the earliest change is probably not until at least Jan. 28th. But, that's not unusual, with the average mid-winter dry spell in SF being 21 days. Here's a breakdown since 1950: ggweather.com/enso/winter_...
January 20, 2026 at 11:49 PM
It has been been 14 days since it last rained in San Francisco and the earliest change is probably not until at least Jan. 28th. But, that's not unusual, with the average mid-winter dry spell in SF being 21 days. Here's a breakdown since 1950: ggweather.com/enso/winter_...
I had almost given up on any sunrise color today when there was a a thin hint on the eastern horizon. By the time I raced to a nearby pond, the sky and its reflection nearly took my breath away. 1/20/2026
January 20, 2026 at 3:28 PM
I had almost given up on any sunrise color today when there was a a thin hint on the eastern horizon. By the time I raced to a nearby pond, the sky and its reflection nearly took my breath away. 1/20/2026
I was tryiing to be "artsy" by shooting tonight's sunset through a thicket of brambles, and didn't notice until I got home that I had captured a fairly distinct #GreenFlash. Sometimes you just get lucky. 1/18/2026
January 19, 2026 at 1:48 AM
I was tryiing to be "artsy" by shooting tonight's sunset through a thicket of brambles, and didn't notice until I got home that I had captured a fairly distinct #GreenFlash. Sometimes you just get lucky. 1/18/2026
A predawm sojourn down the coast this morning paid off with lots of color at Whaler''s Cove and Pigeon Point Light Station State Historic Park. Not a bad way to start the weekend. 1/17/2026
January 17, 2026 at 3:56 PM
A predawm sojourn down the coast this morning paid off with lots of color at Whaler''s Cove and Pigeon Point Light Station State Historic Park. Not a bad way to start the weekend. 1/17/2026
When the incoming tide meets the outflow from Cañada Verde Creek and is lit up by another spectacular January sunset. 1/11/2026
January 12, 2026 at 2:11 AM
When the incoming tide meets the outflow from Cañada Verde Creek and is lit up by another spectacular January sunset. 1/11/2026
My first Peregrine Falcon sighting of the year at Devil's Slide. 1/10/2026
January 10, 2026 at 10:21 PM
My first Peregrine Falcon sighting of the year at Devil's Slide. 1/10/2026
I was rewarded for a last minute decision to drive south and miss the local low clouds and got to Pigeon Point Light Station State Historic Park just in time for a Friday sunset!
January 10, 2026 at 2:04 AM
I was rewarded for a last minute decision to drive south and miss the local low clouds and got to Pigeon Point Light Station State Historic Park just in time for a Friday sunset!
The National Wather Service has consolidated some of their Cold Weather warnings, watches and advisories. The first EXTREME COLD WARNING has been issued for some southern parts of the SF Bayb Area. weather.gov/safety/cold-ww
Understanding Cold Weather Alerts
weather.gov
January 8, 2026 at 2:33 PM
The National Wather Service has consolidated some of their Cold Weather warnings, watches and advisories. The first EXTREME COLD WARNING has been issued for some southern parts of the SF Bayb Area. weather.gov/safety/cold-ww
Feeling blessed to live along this beautiful coastline. (sound on) 1/6/2026
January 8, 2026 at 5:12 AM
Feeling blessed to live along this beautiful coastline. (sound on) 1/6/2026
So how did the models do w/ their 7-day total precip forecasts? My general impression is that they were mostly too wet; even the average of the modeled 168-hr qpf.
January 7, 2026 at 6:13 PM
So how did the models do w/ their 7-day total precip forecasts? My general impression is that they were mostly too wet; even the average of the modeled 168-hr qpf.
Skies have cleared for a late night glimpse of the 82% waning gibbous moon. 1/6/2026
January 7, 2026 at 7:40 AM
Skies have cleared for a late night glimpse of the 82% waning gibbous moon. 1/6/2026
Some post-storm color over Half Moon Bay. 1/6/2026
January 7, 2026 at 2:25 AM
Some post-storm color over Half Moon Bay. 1/6/2026
The mid-point of the rainfall season (Jul 1 to Jun 3) is when a location normally gets 50% of their seasonal total, not January 1st. For California, that's skewed into the latter half of the month, with the earliest dates in the northwest.
January 6, 2026 at 5:20 PM
The mid-point of the rainfall season (Jul 1 to Jun 3) is when a location normally gets 50% of their seasonal total, not January 1st. For California, that's skewed into the latter half of the month, with the earliest dates in the northwest.
Robust precipitation totals across the state. The very important Sierra Precipitation Indices (8SI, 5SI & 6SI) all topping 150% of normal to date.
January 5, 2026 at 8:55 PM
Robust precipitation totals across the state. The very important Sierra Precipitation Indices (8SI, 5SI & 6SI) all topping 150% of normal to date.
12:35 pm. Embedded convection with lightning popping up offshore and progged to roll onshore this afternoon and evening.
January 5, 2026 at 8:40 PM
12:35 pm. Embedded convection with lightning popping up offshore and progged to roll onshore this afternoon and evening.
9:40 am. Moderate to heavy rain moving into the Bay Area, with more offshore ahead of a developing area of low pressure (i.e., cyclogenesis). It's a rainy day and Monday. 1/5/2026
January 5, 2026 at 5:53 PM
9:40 am. Moderate to heavy rain moving into the Bay Area, with more offshore ahead of a developing area of low pressure (i.e., cyclogenesis). It's a rainy day and Monday. 1/5/2026
The trifecta of King Tides, long period swells and storm surge are pushing crashing waves onto the road at Miramar Beach, Half Moon Bay. (sound on) 1/4/2026
January 4, 2026 at 8:38 PM
The trifecta of King Tides, long period swells and storm surge are pushing crashing waves onto the road at Miramar Beach, Half Moon Bay. (sound on) 1/4/2026
About 5 am I noticed it had gotten somewhat bright outside as the Full (Wolf) Moon was trying to break through a thin spot in the clouds. Rather than rolling over and going back to sleep like normal people, I grabbed my camera. 1/3/2026
January 3, 2026 at 4:24 PM
About 5 am I noticed it had gotten somewhat bright outside as the Full (Wolf) Moon was trying to break through a thin spot in the clouds. Rather than rolling over and going back to sleep like normal people, I grabbed my camera. 1/3/2026