Alert archive / Oregon / High Surf Advisories in 2021
High Surf Advisory 9, NWS Medford, OR
NWS Medford, OR issued this high surf advisory at Dec 13, 2021, 1:19 AM PST for Coos County, Curry County, Douglas County, Oregon. It was in force for 27 hr.
The area
The counties it named.
The facts
- Issued
- Dec 13, 2021, 1:19 AM PST (09:19 UTC)
- Expired
- Dec 14, 2021, 4:00 AM PST
- In force
- 27 hr
- Issued by
- NWS Medford, OR
Counties Coos County, OR, Curry County, OR, Douglas County, OR
The radar
The Medford radar (KMAX), 135 km from the middle of the area, began a volume at 09:17 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
Medford/Jackson, OR (KMFR), launched 00:00Z, 9.3 hours before the alert went out and 108 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 758 m above ground
- 0-6 km bulk shear
- 98 kt
- 0-1 km storm-relative helicity
- 160 m²/s²
- 0-3 km storm-relative helicity
- 177 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
632 WHUS46 KMFR 130919 CFWMFR Coastal Hazard Message National Weather Service Medford OR 119 AM PST Mon Dec 13 2021 ORZ021-022-131800- /O.NEW.KMFR.SU.Y.0009.211213T0919Z-211213T1800Z/ South Central Oregon Coast-Curry County Coast- 119 AM PST Mon Dec 13 2021 ...HIGH SURF ADVISORY IN EFFECT UNTIL 10 AM PST THIS MORNING... * WHAT...Large breaking waves of 20 to 25 feet. * WHERE...All area beaches along the southern Oregon Coast, including the beaches of Coos, Curry and Douglas Counties. * WHEN...Until 10 AM PST this morning. * IMPACTS...Large breaking waves will create hazardous conditions along and within the surf zone, and could inundate beaches and low lying shorelines. Beach erosion is possible, and exposed infrastructure may be damaged. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... Stay away from the surf zone and off of jetties. Area beaches may become hazardous due to dangerous surf conditions. && $$ Visit us at https://www.weather.gov/Medford
3 follow-up statements
882 WHUS46 KMFR 131758 CFWMFR Coastal Hazard Message National Weather Service Medford OR 958 AM PST Mon Dec 13 2021 ORZ021-022-141200- /O.EXT.KMFR.SU.Y.0009.000000T0000Z-211214T1200Z/ South Central Oregon Coast-Curry County Coast- 958 AM PST Mon Dec 13 2021 ...HIGH SURF ADVISORY NOW IN EFFECT UNTIL 4 AM PST TUESDAY... * WHAT...Large breaking waves of 20 to 25 feet. * WHERE...All area beaches along the southern Oregon Coast, including the beaches of Coos, Curry and Douglas Counties. * WHEN...Until 4 AM PST Tuesday. * IMPACTS...Large breaking waves will create hazardous conditions along and within the surf zone, and could inundate beaches and low lying shorelines. Beach erosion is possible, and exposed infrastructure may be damaged. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... Stay away from the surf zone and off of jetties. Area beaches may become hazardous due to dangerous surf conditions. && $$ BTL Visit us at https://www.weather.gov/Medford
040 WHUS46 KMFR 141028 CFWMFR Coastal Hazard Message National Weather Service Medford OR 228 AM PST Tue Dec 14 2021 ORZ021-022-141200- /O.CON.KMFR.SU.Y.0009.000000T0000Z-211214T1200Z/ South Central Oregon Coast-Curry County Coast- 228 AM PST Tue Dec 14 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 4 AM PST EARLY THIS MORNING... * WHAT...Large breaking waves of 20 to 25 feet. * WHERE...All area beaches along the southern Oregon Coast, including the beaches of Coos, Curry and Douglas Counties. * WHEN...Until 4 AM PST early this morning. * IMPACTS...Large breaking waves will create hazardous conditions along and within the surf zone, and could inundate beaches and low lying shorelines. Beach erosion is possible, and exposed infrastructure may be damaged. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... Stay away from the surf zone and off of jetties. Area beaches may become hazardous due to dangerous surf conditions. && $$ Visit us at https://www.weather.gov/Medford
812 WHUS46 KMFR 141155 CFWMFR Coastal Hazard Message National Weather Service Medford OR 355 AM PST Tue Dec 14 2021 ORZ021-022-141300- /O.EXP.KMFR.SU.Y.0009.000000T0000Z-211214T1200Z/ South Central Oregon Coast-Curry County Coast- 355 AM PST Tue Dec 14 2021 ...HIGH SURF ADVISORY WILL EXPIRE AT 4 AM PST EARLY THIS MORNING... The swell generating the high surf conditions are beginning to lower, with only one of two buoys showing advisory level high surf swell conditions. Since the swell is expected to lower in height and period through, high surf is expected to become less hazardous through the morning. $$ Visit us at https://www.weather.gov/Medford
The office that day
Everything else NWS Medford, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 13, 1:15 PM PST | Frost Advisory | MFR | Coos, Curry, Douglas | 19 hr |
| Dec 13, 2:29 PM PST | High Wind Watch | MFR | Coos, Curry, Douglas | 24 hr |
Nearby
High Surf Advisories in Oregon, 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.