Kevin Levey
@drstorminsf.bsky.social
PHD Meteorologist @ CustomWeather, marathon runner. From Cape Town, SA. Also teach meteorology at SFSU.🌈49-ers, SF Giants, Warriors FAN!
Reposted by Kevin Levey
Critical fire weather conditions are not letting up in Southern California. National Weather Service Los Angeles forecasts “major” fire risk through Wednesday, Jan. 15 — another five days. #CAwx
January 11, 2025 at 12:41 AM
Critical fire weather conditions are not letting up in Southern California. National Weather Service Los Angeles forecasts “major” fire risk through Wednesday, Jan. 15 — another five days. #CAwx
This is soooo my cat, Cosmo.
January 7, 2025 at 3:02 AM
This is soooo my cat, Cosmo.
Reposted by Kevin Levey
A series of large storms in the Pacific are generating long-period swells that will create high surf conditions beginning Saturday and continue for almost a week. NWS High Surf Advisory: forecast.weather.gov/wwamap/wwatx...
December 20, 2024 at 6:20 AM
A series of large storms in the Pacific are generating long-period swells that will create high surf conditions beginning Saturday and continue for almost a week. NWS High Surf Advisory: forecast.weather.gov/wwamap/wwatx...
Reposted by Kevin Levey
Several storms spinning over the Pacific Ocean will push rough seas toward the California coast in the coming days. Those conditions will coincide with the annual king tides, raising the flood risk for Bay Area beaches.
Bay Area storms will bring high surf to beaches, coastal flood risk
San Francisco's highest tide is predicted Saturday. Large waves and strong winds will enhance the already high astronomical tides, especially near Santa Cruz.
www.sfchronicle.com
December 12, 2024 at 4:42 PM
Several storms spinning over the Pacific Ocean will push rough seas toward the California coast in the coming days. Those conditions will coincide with the annual king tides, raising the flood risk for Bay Area beaches.
A magnitude 6.6 earthquake just occurred seconds ago near Eureka, California in Northern California.
December 5, 2024 at 6:53 PM
A magnitude 6.6 earthquake just occurred seconds ago near Eureka, California in Northern California.
Reposted by Kevin Levey
High pressure & air pollution: warmer air aloft acts like a "lid" over particulate matter pollution below combined with light wind = hazy skies and at times unhealthy for sensitive groups air quality. This is what usually triggers our Winter Spare the Air alerts #CAwx 12/3/2024
December 3, 2024 at 10:32 PM
High pressure & air pollution: warmer air aloft acts like a "lid" over particulate matter pollution below combined with light wind = hazy skies and at times unhealthy for sensitive groups air quality. This is what usually triggers our Winter Spare the Air alerts #CAwx 12/3/2024
Reposted by Kevin Levey
A week ago I posted the 7-day precip forecasts from the major models (
bsky.app/profile/ggwe...). Below is the amount observed vs those forecast values. My two general impressions are that the ensembles did better and the NWS Blend was too wet. I welcome other analyses.
bsky.app/profile/ggwe...). Below is the amount observed vs those forecast values. My two general impressions are that the ensembles did better and the NWS Blend was too wet. I welcome other analyses.
November 26, 2024 at 5:37 AM
A week ago I posted the 7-day precip forecasts from the major models (
bsky.app/profile/ggwe...). Below is the amount observed vs those forecast values. My two general impressions are that the ensembles did better and the NWS Blend was too wet. I welcome other analyses.
bsky.app/profile/ggwe...). Below is the amount observed vs those forecast values. My two general impressions are that the ensembles did better and the NWS Blend was too wet. I welcome other analyses.
Per NWS Monterey 12.47" over 3 days qualifies as a 1000 year event at Downtown Santa Rosa. hdsc.nws.noaa.gov/pfds/
November 23, 2024 at 9:43 PM
Per NWS Monterey 12.47" over 3 days qualifies as a 1000 year event at Downtown Santa Rosa. hdsc.nws.noaa.gov/pfds/
Storm totals as of 10AM (60hr): Venado in Sonoma Co. at 21.72" is the highest I can find. I've had 2.92" in Sausalito.
November 22, 2024 at 6:09 PM
Storm totals as of 10AM (60hr): Venado in Sonoma Co. at 21.72" is the highest I can find. I've had 2.92" in Sausalito.
Past 36-hour rainfall totals.2.40" at my place in Sausalito.
November 21, 2024 at 6:46 PM
Past 36-hour rainfall totals.2.40" at my place in Sausalito.
Reposted by Kevin Levey
North Bay transition from fire season to sandbags confirmed. Wx models also performing fairly well w/ placement of the long duration atmo river plume - a mostly I-80 north event. This should change for a time as higher rain rates move south later on Friday into early Saturday #CAwx 11/21/2024
November 21, 2024 at 3:54 PM
North Bay transition from fire season to sandbags confirmed. Wx models also performing fairly well w/ placement of the long duration atmo river plume - a mostly I-80 north event. This should change for a time as higher rain rates move south later on Friday into early Saturday #CAwx 11/21/2024
This is the reward for putting up with “no weather” for at least 4 months every year when you live in San Francisco!
November 21, 2024 at 5:32 PM
This is the reward for putting up with “no weather” for at least 4 months every year when you live in San Francisco!
2.33” storm total in Sausalito so far.
November 21, 2024 at 4:39 PM
2.33” storm total in Sausalito so far.
Reposted by Kevin Levey
Updated season-to-date rainfall across Nrn Calif. Most notable was the 4.34" at Santa Rosa, which pushed them from 46% of normal yesterday to 155% of normal today! Over the next week, a number of other sites should also reach normal. See ggweather.com/seasonal_rai...
November 21, 2024 at 2:48 AM
Updated season-to-date rainfall across Nrn Calif. Most notable was the 4.34" at Santa Rosa, which pushed them from 46% of normal yesterday to 155% of normal today! Over the next week, a number of other sites should also reach normal. See ggweather.com/seasonal_rai...
I find that a good red wine pairs well with an atmospheric river 🍷
November 21, 2024 at 2:17 AM
I find that a good red wine pairs well with an atmospheric river 🍷
Reposted by Kevin Levey
Some perspective on this PacNW storm. The analog is that of the Columbus Day storm of 1962. During that storm, the surface pressure reached an estimated 948mb, while today's storm reached 945mb. The impact difference: today's storm stalled 200 miles off the coast, while the 1962 storm breached it.
November 20, 2024 at 2:14 AM
Some perspective on this PacNW storm. The analog is that of the Columbus Day storm of 1962. During that storm, the surface pressure reached an estimated 948mb, while today's storm reached 945mb. The impact difference: today's storm stalled 200 miles off the coast, while the 1962 storm breached it.
Reposted by Kevin Levey
You are getting sleepy. 😴 #Fibonacci
November 20, 2024 at 12:09 AM
You are getting sleepy. 😴 #Fibonacci
Managing people’s rainfall expectations in San Francisco tomorrow with the incoming atmospheric river 🤦🏼♂️
November 20, 2024 at 1:04 AM
Managing people’s rainfall expectations in San Francisco tomorrow with the incoming atmospheric river 🤦🏼♂️
Reposted by Kevin Levey
A strong, prolonged, very moist, and relatively warm #AtmosphericRiver event, in conjunction with rapidly-strengthening #BombCyclone (yes, that's the term!), will bring major rain (and, locally, wind) impacts to OR/NorCal this week. Flooding is likely. #CAwx #ORwx #CAwater [1/6]
November 18, 2024 at 7:35 PM
A strong, prolonged, very moist, and relatively warm #AtmosphericRiver event, in conjunction with rapidly-strengthening #BombCyclone (yes, that's the term!), will bring major rain (and, locally, wind) impacts to OR/NorCal this week. Flooding is likely. #CAwx #ORwx #CAwater [1/6]
If the title wasn’t up at the top of the plot I’d have said “January”…
November 18, 2024 at 5:40 PM
If the title wasn’t up at the top of the plot I’d have said “January”…
Reposted by Kevin Levey
Extensive rain totals aside, an aggressively deepening low brings potential for damaging wind (esp. Pac NW) and very large waves to the coast later this week. Stay tuned #CAwx 11/17/2024
November 18, 2024 at 4:10 AM
Extensive rain totals aside, an aggressively deepening low brings potential for damaging wind (esp. Pac NW) and very large waves to the coast later this week. Stay tuned #CAwx 11/17/2024