Dense fog is expected to form in the San Joaquin Valley overnight. Visibilities in #tulefog less than 1/4 mile are possible between 2 AM and 9 AM Tuesday morning. #CAwx

Dense fog is forming across the valley this morning. Visibilities in #tulefog less than 1/4 mile are possible in the grey shaded areas through noon today.

Foggy conditions have expanded southward this morning across the valley, so the Dense Fog Advisory has been expanded southward as shown by the grey shaded area below. #tulefog #cawx
https://nitter.poast.org/iembot_hnx/status/1621877765598507009#m

Tue, 1/31/23 @ 8:29 PM PST: Dense Fog Advisory in effect for much of the SJ Valley from 2 AM PST tonight until 11 AM PST Wednesday morning. Motorists should take caution and slow down if encountering areas of poor visibility. #CAwx #TuleFog

Tue, 1/31/23 @ 8:26 PM PST: Dense Fog Advisory in effect from 2 AM PST tonight until 11 AM PST Wednesday morning. Motorists should take caution and slow down if encountering areas of poor visibility. #CAwx #TuleFog

Sun, 1/22/23 @ 6:08 AM PST: Dense fog has developed in the SJ Valley, including in the Hanford and Merced areas. Visibility is at 1/4 mile at Hanford, Merced & Atwater, though could be as low as 200 feet in outlying areas. A Dense Fog Advisory continues till 11 AM. #CAwx #TuleFog

Dense fog is being observed across portions of the San Joaquin Valley this morning. A Dense Fog Advisory will be in effect through 10 AM Wednesday due to low visibility. #tulefog

Dense Fog is forming around Hanford and Lemoore this morning. Visibility less than 1 quarter of a mile could lead to hazard travel conditions in the innermost portions of the San Joaquin Valley. #tulefog #cawx

Tue, 1/3/23 @ 4:10 AM PST: Patchy dense fog reported in portions of Bakersfield; some of Caltrans' webcams showing fog towards the east and south sides of the city. Visibility could drop below 1/4 mile in these areas through later this morning. #CAwx #TuleFog

Skies have cleared out and fog returns to the San Joaquin Valley. The #Tulefog is very patchy with variable visibility from several miles down to a few hundred feet. Slow down and allow extra time to reach your destination. #CAwx

The sea of #TuleFog and stratus blanketing much of the Valley on this Christmas Day.

Much warmer as you climb out of the fog and into the mountains.

Current temp comparison:
47°F Sac International (elevation 25 feet)
62°F Blue Canyon Airport (elevation 5280 feet)
#CAwx

Fri, 12/23/22 @ 9:12 PM PST: Fog continues to develop this evening. Visibility now down to 1/4 mile at Hanford, Madera, Merced & Porterville. Remains steady at 1/4 mile in Visalia and Lemoore. Otherwise, visibility is at 3-4 miles at Fresno & Bakersfield. #CAwx #TuleFog

Fri, 12/23/22 @ 7:48 PM PST: Dense fog is redeveloping tonight. Visibility down to 1/4 mile or less at Visalia and Lemoore. Elsewhere in the SJ Valley, visibility remains at 3/4 mile or better for now. Dense Fog Advisory in effect from 1 AM tonight until Noon Sat. #CAwx #TuleFog

Visibility has lowered to a quarter to a half mile at several locations in the south San Joaquin Valley. Travelers on SR 99, SR 65 and SR 198 should be prepared for rapidly changing visibility. #cawx #tulefog

Webcams are showing visibility around a quarter mile in Visalia and Tulare. Travelers on SR 99 and SR 198 should be prepared for rapidly changing visibility. #cawx #tulefog

The city of Byron is already reporting reduced visibility down to 2 miles, and a buoy gauge near Martinez along the Delta is dipping below 4 miles from the #TuleFog in the East Bay.

Be mindful for #fog through the overnight hours and travel with caution.

#CAwx #CAfog

Visibility in the San Joaquin Valley is generally between 1/2 and 2 miles this morning. However, some web cameras are currently showing visibility below 1000 feet. A Dense Fog Advisory remains in effect for much of the valley until 1100 PST today. #cawx #tulefog

A Dense Fog Advisory is in effect across the San Joaquin Valley through 11 AM Wednesday. Visibility can range from less than ¼ of a mile to as low as 200 feet in dense fog. #tulefog #cawx

Dense fog is forming across the San Joaquin Valley this evening. This webcam image is near the Madera Acres area. Dense fog will lead to visibility less than 1/4 of a mile. #tulefog

Dense Fog Advisory has been issued for portions of the San Joaquin Valley thru 11 AM PST Tuesday morning. Give your self extra time this morning and drive safely! #tulefog