Alert archive / California / High Surf Advisories in 2021
High Surf Advisory 8, NWS San Diego, CA
NWS San Diego, CA issued this high surf advisory at Dec 13, 2021, 1:07 PM PST for Orange County, San Diego County, California. It took effect at Dec 14, 2021, 4:00 AM PST. It was in force for 34 hr.
The area
The counties it named.
The facts
- Issued
- Dec 13, 2021, 1:07 PM PST (21:07 UTC)
- In effect from
- Dec 14, 2021, 4:00 AM PST
- Expired
- Dec 15, 2021, 2:00 PM PST
- In force
- 34 hr
- Issued by
- NWS San Diego, CA
Counties Orange County, CA, San Diego County, CA
The radar
The San Diego radar (KNKX), 53 km from the middle of the area, began a volume at 21:06 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
San Diego, CA (KNKX), launched 12:00Z, 9.1 hours before the alert went out and 62 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 8 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 795 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- 133 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
917 WHUS46 KSGX 132107 CFWSGX Coastal Hazard Message National Weather Service San Diego CA 107 PM PST Mon Dec 13 2021 CAZ043-552-141200- /O.NEW.KSGX.SU.Y.0008.211214T1200Z-211215T2200Z/ San Diego County Coastal Areas-Orange County Coastal Areas- 107 PM PST Mon Dec 13 2021 ...HIGH SURF ADVISORY IN EFFECT FROM 4 AM TUESDAY TO 2 PM PST WEDNESDAY... * WHAT...Large breaking waves of 5 to 8 feet are expected along the beaches beginning early Tuesday morning and lasting through Wednesday. Localized sets to 10 feet can be expected. * WHERE...San Diego County Coastal Areas and Orange County Coastal Areas. * WHEN...From 4 AM Tuesday to 2 PM PST Wednesday. * IMPACTS...High rip current risk is expected, which can pull swimmers and surfers out to sea and cause drowning. Large breaking waves can cause injury, wash people off beaches and rocks, and capsize small boats near shore. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced swimmers should remain out of the water due to dangerous surf conditions. && $$
5 follow-up statements
637 WHUS46 KSGX 141144 CFWSGX Coastal Hazard Message National Weather Service San Diego CA 344 AM PST Tue Dec 14 2021 CAZ043-552-142200- /O.CON.KSGX.SU.Y.0008.211214T1200Z-211215T2200Z/ San Diego County Coastal Areas-Orange County Coastal Areas- 344 AM PST Tue Dec 14 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST WEDNESDAY... * WHAT...Surf of 5 to 8 feet today, lowering to 4 to 7 feet Wednesday morning. Local sets to 10 feet, mainly in San Diego County.. * WHERE...San Diego County Coastal Areas and Orange County Coastal Areas. * WHEN...Through 2 PM PST Wednesday. * IMPACTS...High rip current risk is expected, which can pull swimmers and surfers out to sea and cause drowning. Large breaking waves can cause injury, wash people off beaches and rocks, and capsize small boats near shore. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced swimmers should remain out of the water due to dangerous surf conditions. && $$ SS
035 WHUS46 KSGX 142008 CFWSGX Coastal Hazard Message National Weather Service San Diego CA 1208 PM PST Tue Dec 14 2021 CAZ043-552-150600- /O.CON.KSGX.SU.Y.0008.000000T0000Z-211215T2200Z/ San Diego County Coastal Areas-Orange County Coastal Areas- 1208 PM PST Tue Dec 14 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST WEDNESDAY... * WHAT...Surf of 5 to 8 feet today, lowering to 4 to 7 feet Wednesday morning. Local sets to 10 feet, mainly in southern San Diego County. * WHERE...San Diego County Coastal Areas and Orange County Coastal Areas. * WHEN...Through 2 PM PST Wednesday. * IMPACTS...High rip current risk is expected, which can pull swimmers and surfers out to sea and cause drowning. Large breaking waves can cause injury, wash people off beaches and rocks, and capsize small boats near shore. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced swimmers should remain out of the water due to dangerous surf conditions. && $$
689 WHUS46 KSGX 150538 CFWSGX Coastal Hazard Message National Weather Service San Diego CA 938 PM PST Tue Dec 14 2021 CAZ043-552-151345- /O.CON.KSGX.SU.Y.0008.000000T0000Z-211215T2200Z/ San Diego County Coastal Areas-Orange County Coastal Areas- 938 PM PST Tue Dec 14 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST WEDNESDAY... * WHAT...Surf of 4 to 8 feet. Local sets to 10 feet, mainly in southern San Diego County. * WHERE...San Diego County Coastal Areas and Orange County Coastal Areas. * WHEN...Through 2 PM PST Wednesday. * IMPACTS...High rip current risk is expected, which can pull swimmers and surfers out to sea and cause drowning. Large breaking waves can cause injury, wash people off beaches and rocks, and capsize small boats near shore. * OUTLOOK...Surf will gradually lower Wednesday afternoon and evening. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced swimmers should remain out of the water due to dangerous surf conditions. && $$ Maxwell
002 WHUS46 KSGX 151313 CFWSGX Coastal Hazard Message National Weather Service San Diego CA 513 AM PST Wed Dec 15 2021 CAZ043-552-152200- /O.CON.KSGX.SU.Y.0008.000000T0000Z-211215T2200Z/ San Diego County Coastal Areas-Orange County Coastal Areas- 513 AM PST Wed Dec 15 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 2 PM PST THIS AFTERNOON... * WHAT...Surf of 4 to 7 feet. * WHERE...San Diego County Coastal Areas and Orange County Coastal Areas. * WHEN...Through 2 PM PST this afternoon. * IMPACTS...High rip current risk is expected, which can pull swimmers and surfers out to sea and cause drowning. Large breaking waves can cause injury, and wash people off jetties and rocks. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced swimmers should remain out of the water due to dangerous surf conditions. && $$
231 WHUS46 KSGX 152135 CFWSGX Coastal Hazard Message National Weather Service San Diego CA 135 PM PST Wed Dec 15 2021 CAZ043-552-152245- /O.EXP.KSGX.SU.Y.0008.000000T0000Z-211215T2200Z/ San Diego County Coastal Areas-Orange County Coastal Areas- 135 PM PST Wed Dec 15 2021 ...HIGH SURF ADVISORY WILL EXPIRE AT 2 PM PST THIS AFTERNOON... Surf is now below 7 feet and continuing to subside.. $$
The office that day
Everything else NWS San Diego, CA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 12, 5:03 PM PST | Gale Warning | SGX | 59 hr | |
| Dec 13, 3:50 AM PST | High Wind Warning | SGX | Riverside, San Bernardino, San Diego | 44 hr |
| Dec 13, 3:50 AM PST | Wind Advisory | SGX | Orange, Riverside, San Bernardino, San Diego | 44 hr |
| Dec 13, 3:53 AM PST | Winter Storm Warning | SGX | Riverside, San Bernardino | 44 hr |
| Dec 13, 10:42 AM PST | Flood Watch | SGX | Orange, Riverside, San Bernardino, San Diego | 34 hr |
Nearby
High Surf Advisories in California, 2021Every high surf advisory in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.