Alert archive / Oregon / Hazardous Seas Warnings in 2021
Hazardous Seas Warning 78, NWS Medford, OR
NWS Medford, OR issued this hazardous seas warning at Dec 1, 2021, 1:47 AM PST. It took effect at Dec 2, 2021, 1:00 PM PST. It was in force for 21 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Dec 1, 2021, 1:47 AM PST (09:47 UTC)
- In effect from
- Dec 2, 2021, 1:00 PM PST
- Expired
- Dec 3, 2021, 10:00 AM PST
- In force
- 21 hr
- Issued by
- NWS Medford, OR
The text
As transmitted.
217 WHUS76 KMFR 010947 MWWMFR URGENT - MARINE WEATHER MESSAGE National Weather Service Medford OR 147 AM PST Wed Dec 1 2021 PZZ370-376-012300- /O.CON.KMFR.SC.Y.0123.211201T1800Z-211203T2000Z/ /O.UPG.KMFR.SE.A.0031.211203T0000Z-211203T2000Z/ /O.NEW.KMFR.SE.W.0078.211203T0000Z-211203T2000Z/ Waters from Florence to Cape Blanco OR from 10 to 60 nm- Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm- 147 AM PST Wed Dec 1 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO NOON PST FRIDAY... ...HAZARDOUS SEAS WARNING IN EFFECT FROM 4 PM THURSDAY TO NOON PST FRIDAY... * WHAT...Very steep and hazardous seas 8 to 11 ft at 10 seconds with north winds 15 to 25 kt and gusts up to 35 kt. * WHERE...For the Hazardous Seas Warning, beyond 10 nm from shore and south of Coos Bay. For the Small Craft Advisory, locations north of Coos Bay and within 10 nm of shore. * WHEN...For the Hazardous Seas Warning, from 4 PM Thursday to noon PST Friday. For the Small Craft Advisory, from 10 AM this morning to noon PST Friday. * IMPACTS...Very steep and hazardous seas could capsize or damage vessels. Bar crossings will become especially treacherous. * View the hazard area in detail at https://go.usa.gov/x6hks PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for very steep seas and consider remaining in port until conditions improve. && $$ PZZ350-356-012300- /O.CON.KMFR.SC.Y.0123.211201T1800Z-211203T2000Z/ Coastal waters from Florence to Cape Blanco OR out 10 nm- Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm- 147 AM PST Wed Dec 1 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 10 AM THIS MORNING TO NOON PST FRIDAY... * WHAT...North winds 15 to 25 kt with gusts up to 30 kt and steep seas 8 to 11 ft at 13 seconds. * WHERE...All areas between Florence and Pt. St. George. * WHEN...From 10 AM Wednesday to noon PST Friday. * IMPACTS...Gusty winds and/or steep seas could capsize or damage smaller vessels. * View the hazard area in detail at https://go.usa.gov/x6hks PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners and those operating smaller vessels should remain in port and avoid the area of hazardous conditions. && $$ Visit us at https://www.weather.gov/Medford
8 follow-up statements
654 WHUS76 KMFR 012208 MWWMFR URGENT - MARINE WEATHER MESSAGE National Weather Service Medford OR 208 PM PST Wed Dec 1 2021 PZZ370-376-021115- /O.CON.KMFR.SC.Y.0123.000000T0000Z-211203T2000Z/ /O.CON.KMFR.SE.W.0078.211203T0000Z-211203T2000Z/ Waters from Florence to Cape Blanco OR from 10 to 60 nm- Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm- 208 PM PST Wed Dec 1 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON PST FRIDAY... ...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 4 PM THURSDAY TO NOON PST FRIDAY... * WHAT...For the Hazardous Seas Warning, very steep and hazardous seas 8 to 12 ft at 13 seconds. For the Small Craft Advisory, north winds 15 to 25 kt with gusts up to 35 kt and seas 8 to 13 ft at 13 seconds. * WHERE...For the Hazardous Seas Warning, beyond 10 nm from shore and south of Coos Bay. For the Small Craft Advisory, locations north of Coos Bay and within 10 nm of shore. * WHEN...For the Hazardous Seas Warning, from 4 PM Thursday to noon PST Friday. For the Small Craft Advisory, from 10 AM this morning to noon PST Friday. * IMPACTS...Very steep and hazardous seas could capsize or damage vessels. Bar crossings will become especially treacherous. * View the hazard area in detail at https://go.usa.gov/x6hks PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for very steep seas and consider remaining in port until conditions improve. && $$ PZZ350-356-021115- /O.CON.KMFR.SC.Y.0123.000000T0000Z-211203T2000Z/ Coastal waters from Florence to Cape Blanco OR out 10 nm- Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm- 208 PM PST Wed Dec 1 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON PST FRIDAY... * WHAT...North winds 15 to 25 kt with gusts up to 30 kt and seas 7 to 11 ft at 13 seconds. * WHERE...All areas between Florence and Pt. St. George. * WHEN...From 10 AM Wednesday to noon PST Friday. * IMPACTS...Gusty winds and/or steep seas could capsize or damage smaller vessels. * View the hazard area in detail at https://go.usa.gov/x6hks PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners and those operating smaller vessels should remain in port and avoid the area of hazardous conditions. && $$ Visit us at https://www.weather.gov/Medford
012 WHUS76 KMFR 021110 MWWMFR URGENT - MARINE WEATHER MESSAGE National Weather Service Medford OR 310 AM PST Thu Dec 2 2021 PZZ370-376-030015- /O.CON.KMFR.SC.Y.0123.000000T0000Z-211203T2000Z/ /O.CON.KMFR.SE.W.0078.211203T0000Z-211203T2000Z/ Waters from Florence to Cape Blanco OR from 10 to 60 nm- Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm- 310 AM PST Thu Dec 2 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON PST FRIDAY... ...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO NOON PST FRIDAY... * WHAT...For the Hazardous Seas Warning, very steep and hazardous seas 8 to 12 ft at 13 seconds. For the Small Craft Advisory, north winds 15 to 25 kt with gusts up to 35 kt and seas 8 to 13 ft at 13 seconds. * WHERE...For the Hazardous Seas Warning, beyond 10 nm from shore and south of Coos Bay. For the Small Craft Advisory, locations north of Coos Bay and within 10 nm of shore. * WHEN...For the Hazardous Seas Warning, from 4 PM this afternoon to noon PST Friday. For the Small Craft Advisory, until noon PST Friday. * IMPACTS...Very steep and hazardous seas could capsize or damage vessels. Bar crossings will become especially treacherous. * View the hazard area in detail at https://go.usa.gov/x6hks PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for very steep seas and consider remaining in port until conditions improve. && $$ PZZ350-356-030015- /O.CON.KMFR.SC.Y.0123.000000T0000Z-211203T2000Z/ Coastal waters from Florence to Cape Blanco OR out 10 nm- Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm- 310 AM PST Thu Dec 2 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON PST FRIDAY... * WHAT...North winds 15 to 25 kt with gusts up to 30 kt and seas 7 to 11 ft at 13 seconds. * WHERE...All areas between Florence and Pt. St. George. * WHEN...Until noon PST Friday. * IMPACTS...Gusty winds and/or steep seas could capsize or damage smaller vessels. * View the hazard area in detail at https://go.usa.gov/x6hks PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners and those operating smaller vessels should remain in port and avoid the area of hazardous conditions. && $$ Visit us at https://www.weather.gov/Medford
124 WHUS76 KMFR 021453 MWWMFR URGENT - MARINE WEATHER MESSAGE National Weather Service Medford OR 653 AM PST Thu Dec 2 2021 PZZ370-376-030400- /O.CON.KMFR.SC.Y.0123.000000T0000Z-211203T2000Z/ /O.CON.KMFR.SE.W.0078.211203T0000Z-211203T2000Z/ Waters from Florence to Cape Blanco OR from 10 to 60 nm- Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm- 653 AM PST Thu Dec 2 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON PST FRIDAY... ...HAZARDOUS SEAS WARNING REMAINS IN EFFECT FROM 4 PM THIS AFTERNOON TO NOON PST FRIDAY... * WHAT...For the Hazardous Seas Warning, very steep and hazardous seas 8 to 12 ft at 10 seconds. For the Small Craft Advisory, north winds 15 to 25 kt with gusts up to 35 kt and seas 8 to 13 ft at 13 seconds. * WHERE...For the Hazardous Seas Warning, beyond 10 nm from shore and south of Coos Bay. For the Small Craft Advisory, locations north of Coos Bay and within 10 nm of shore. * WHEN...For the Hazardous Seas Warning, from 4 PM this afternoon to noon PST Friday. For the Small Craft Advisory, until noon PST Friday. * IMPACTS...Very steep and hazardous seas could capsize or damage vessels. Bar crossings will become especially treacherous. * View the hazard area in detail at https://go.usa.gov/x6hks PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for very steep seas and consider remaining in port until conditions improve. && $$ PZZ350-356-030400- /O.CON.KMFR.SC.Y.0123.000000T0000Z-211203T2000Z/ Coastal waters from Florence to Cape Blanco OR out 10 nm- Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm- 653 AM PST Thu Dec 2 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON PST FRIDAY... * WHAT...North winds 15 to 25 kt with gusts up to 30 kt and seas 7 to 11 ft at 13 seconds. * WHERE...All areas between Florence and Pt. St. George. * WHEN...Until noon PST Friday. * IMPACTS...Gusty winds and/or steep seas could capsize or damage smaller vessels. * View the hazard area in detail at https://go.usa.gov/x6hks PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners and those operating smaller vessels should remain in port and avoid the area of hazardous conditions. && $$ Visit us at https://www.weather.gov/Medford
864 WHUS76 KMFR 021732 MWWMFR URGENT - MARINE WEATHER MESSAGE National Weather Service Medford OR 932 AM PST Thu Dec 2 2021 PZZ350-356-030645- /O.CON.KMFR.SC.Y.0123.000000T0000Z-211203T2000Z/ /O.EXB.KMFR.SE.W.0078.211203T0000Z-211203T1200Z/ Coastal waters from Florence to Cape Blanco OR out 10 nm- Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm- 932 AM PST Thu Dec 2 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON PST FRIDAY... ...HAZARDOUS SEAS WARNING IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 AM PST FRIDAY... * WHAT...North winds 15 to 25 kt will increase to 20 to 30 kt late this afternoon and evening, then gradually lower late tonight into Friday. Steep, west seas of 10 to 11 ft at 13 seconds will become steep to very steep seas of 9 to 11 feet due to a mix of wind seas and swell late this afternoon through tonight. * WHERE...Small craft advisory conditions are expected for all areas this morning into this afternoon. Very steep hazardous seas will affect areas beyond 5 nm from shore from 5 nm north of Cape Blanco southward late this afternoon through tonight with conditions hazardous to small craft elsewhere. * WHEN...For the Hazardous Seas Warning, from 4 PM this afternoon to 4 AM PST Friday. For the Small Craft Advisory, until noon PST Friday. * IMPACTS...Very steep and hazardous seas could capsize or damage vessels. Bar crossings will become especially treacherous. * View the hazard area in detail at https://go.usa.gov/x6hks PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for very steep seas and consider remaining in port until conditions improve. && $$ PZZ376-030645- /O.EXT.KMFR.SC.Y.0123.000000T0000Z-211203T0000Z/ /O.EXT.KMFR.SE.W.0078.211202T2100Z-211203T2000Z/ /O.NEW.KMFR.SC.Y.0124.211203T1200Z-211203T2000Z/ Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm- 932 AM PST Thu Dec 2 2021 ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... ...HAZARDOUS SEAS WARNING NOW IN EFFECT FROM 1 PM THIS AFTERNOON TO NOON PST FRIDAY... ...SMALL CRAFT ADVISORY IN EFFECT FROM 4 AM TO NOON PST FRIDAY... * WHAT...North winds 20 to 30 kt increasing to 25 to 30 kt with occasional gusts up to 35 kt this afternoon and evening, then gradually lowering late tonight into Friday. Steep, west seas of 10 to 11 ft at 13 seconds will become very steep 10 to 12 feet seas dominated by short period wind seas this afternoon through tonight. * WHERE...Small craft advisory conditions are expected this morning. Very steep hazardous seas will affect areas south of Gold Beach this afternoon with steep seas continuing elsewhere. Then very steep hazardous seas will affect all areas late this afternoon through Friday morning. * WHEN...For the Hazardous Seas Warning, from 1 PM this afternoon to noon PST Friday. For the Small Craft Advisory, until 4 PM PST this afternoon. For the Small Craft Advisory, from 4 AM to noon PST Friday. * IMPACTS...Very steep and hazardous seas could capsize or damage vessels. Bar crossings will become especially treacherous. * View the hazard area in detail at https://go.usa.gov/x6hks PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for very steep seas and consider remaining in port until conditions improve. && $$ PZZ370-030645- /O.CON.KMFR.SC.Y.0123.000000T0000Z-211203T2000Z/ /O.EXT.KMFR.SE.W.0078.211203T0000Z-211203T1200Z/ Waters from Florence to Cape Blanco OR from 10 to 60 nm- 932 AM PST Thu Dec 2 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON PST FRIDAY... ...HAZARDOUS SEAS WARNING NOW IN EFFECT FROM 4 PM THIS AFTERNOON TO 4 AM PST FRIDAY... * WHAT...For the Hazardous Seas Warning, north winds 25 kt with gusts to 30 kt and very steep and hazardous seas 10 to 11 feet due to a mix of wind seas and west swell. For the Small Craft Advisory, north winds 15 to 25 kt and steep seas of 8 to 10 ft, dominated by west swell at 13 seconds combined with wind seas. * WHERE...For the Hazardous Seas Warning, beyond 10 nm from shore and south of Reedsport late this afternoon through tonight. For the Small Craft Advisory, all areas this morning and afternoon then locations north of Reedsport and within 10 nm of shore this afternoon through tonight. * WHEN...For the Hazardous Seas Warning, from 4 PM this afternoon to 4 AM PST Friday. For the Small Craft Advisory, until noon PST Friday. * IMPACTS...Very steep and hazardous seas could capsize or damage vessels. Bar crossings will become especially treacherous. * View the hazard area in detail at https://go.usa.gov/x6hks PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for very steep seas and consider remaining in port until conditions improve. && $$ Visit us at https://www.weather.gov/Medford
854 WHUS76 KMFR 022212 MWWMFR URGENT - MARINE WEATHER MESSAGE National Weather Service Medford OR 212 PM PST Thu Dec 2 2021 PZZ376-031215- /O.CON.KMFR.SE.W.0078.000000T0000Z-211203T2000Z/ /O.CON.KMFR.SC.Y.0123.000000T0000Z-211203T0000Z/ /O.CON.KMFR.SC.Y.0124.211203T1200Z-211203T2000Z/ Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm- 212 PM PST Thu Dec 2 2021 ...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL NOON PST FRIDAY... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST THIS AFTERNOON... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 4 AM TO NOON PST FRIDAY... * WHAT...North winds 25 to 30 kt with occasional gusts up to 35 kt this, gradually lowering late tonight into Friday. Very steep seas 10 to 12 feet through tonight. * WHERE...Hazardous Seas Warning conditions will affect areas south of Gold Beach this afternoon with steep seas continuing elsewhere. Then very steep hazardous seas will affect all areas late this afternoon through Friday morning. * WHEN...For the Hazardous Seas Warning, from 1 PM this afternoon to noon PST Friday. For the Small Craft Advisory, until 4 PM PST this afternoon, then again from 4 AM to noon PST Friday. * IMPACTS...Very steep and hazardous seas could capsize or damage vessels. Bar crossings will become especially treacherous. * View the hazard area in detail at https://go.usa.gov/x6hks PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for very steep seas and consider remaining in port until conditions improve. && $$ PZZ350-356-370-031215- /O.CON.KMFR.SC.Y.0123.000000T0000Z-211203T2000Z/ /O.CON.KMFR.SE.W.0078.211203T0000Z-211203T1200Z/ Coastal waters from Florence to Cape Blanco OR out 10 nm- Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm- Waters from Florence to Cape Blanco OR from 10 to 60 nm- 212 PM PST Thu Dec 2 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL NOON PST FRIDAY... ...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 4 AM PST FRIDAY... * WHAT...North winds 20 to 30 kt late this afternoon and evening, then gradually lower late tonight into Friday. Very steep seas of 9 to 11 feet due to a mix of wind seas and swell late this afternoon through tonight. * WHERE...Small craft advisory conditions will affect all areas into this afternoon. Except for Hazardous Seas Warning conditions beyond 5 nm from shore from 5 nm north of Cape Blanco southward late this afternoon through tonight. * WHEN...For the Hazardous Seas Warning, from 4 PM this afternoon to 4 AM PST Friday. For the Small Craft Advisory, until noon PST Friday. * IMPACTS...Very steep and hazardous seas could capsize or damage vessels. Bar crossings will become especially treacherous. * View the hazard area in detail at https://go.usa.gov/x6hks PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for very steep seas and consider remaining in port until conditions improve. && $$ Visit us at https://www.weather.gov/Medford
455 WHUS76 KMFR 030602 MWWMFR URGENT - MARINE WEATHER MESSAGE National Weather Service Medford OR 1002 PM PST Thu Dec 2 2021 PZZ350-356-032300- /O.EXT.KMFR.SE.W.0078.000000T0000Z-211203T1500Z/ /O.EXT.KMFR.SC.Y.0123.000000T0000Z-211204T0600Z/ Coastal waters from Florence to Cape Blanco OR out 10 nm- Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm- 1002 PM PST Thu Dec 2 2021 ...HAZARDOUS SEAS WARNING NOW IN EFFECT UNTIL 7 AM PST FRIDAY... ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 10 PM PST FRIDAY... * WHAT...For the Hazardous Seas Warning, north winds 15 to 25 knots with gusts 25 to 30 knots and very steep, hazardous seas 10 to 11 ft. For the Small Craft Advisory, north winds 10 to 20 kt with gusts up to 30 kt and steep seas 8 to 10 ft. Seas will be due to a mix of short period northerly wind waves and 13 seconds period swell from the west-northwest. * WHERE...The Hazardous Seas Warning is for areas beyond about 5NM west of the coast westward from Bandon southward. The Small Craft Advisory is in effect for the remainder of the area. However, the advisory area will diminish late Friday morning onward to areas about 5NM west of Cape Blanco and to portions of the area north of Cape Blanco west of Bandon and Coos Bay. * WHEN...For the Hazardous Seas Warning, until 7 AM PST Friday. For the Small Craft Advisory, until 10 PM PST Friday. * IMPACTS...Very steep, hazardous seas could capsize or damage vessels. Steep seas will be hazardous to some small craft, especially inexperienced mariners. * View the hazard area in detail at https://go.usa.gov/x6hks PRECAUTIONARY/PREPAREDNESS ACTIONS... A Hazardous Seas Warning means very steep and hazardous sea conditions are imminent or occurring. Recreational boaters should remain in port, or take shelter until waves subside. Commercial vessels should prepare for rough seas and consider remaining in port or taking shelter in port until hazardous seas subside. A Small Craft Advisory means that winds and seas will create a potential hazard to smaller vessels and inexperienced mariners. && $$ PZZ370-032300- /O.EXT.KMFR.SE.W.0078.000000T0000Z-211203T1800Z/ /O.EXT.KMFR.SC.Y.0123.000000T0000Z-211204T0600Z/ Waters from Florence to Cape Blanco OR from 10 to 60 nm- 1002 PM PST Thu Dec 2 2021 ...HAZARDOUS SEAS WARNING NOW IN EFFECT UNTIL 10 AM PST FRIDAY... ...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 10 PM PST FRIDAY... * WHAT...For the Hazardous Seas Warning, north winds 20 to 25 knots with gusts 25 to 30 knots and very steep, hazardous seas 10 to 12 ft. For the Small Craft Advisory, north winds 15 to 25 kt with gusts up to 30 kt and steep seas 8 to 10 ft. Seas will be due to a mix of short period northerly wind waves and 13 seconds period swell from the west-northwest. * WHERE...The Hazardous Seas Warning is for areas west of the coast from Coos Bay southward. The Small Craft Advisory is generally for the remainder of the area through the advisory period. * WHEN...For the Hazardous Seas Warning, until 10 AM PST Friday. For the Small Craft Advisory, until 10 PM PST Friday. * IMPACTS...Very steep, hazardous seas could capsize or damage vessels. Steep seas will be hazardous to some small craft, especially inexperienced mariners. * View the hazard area in detail at https://go.usa.gov/x6hks PRECAUTIONARY/PREPAREDNESS ACTIONS... A Hazardous Seas Warning means very steep and hazardous sea conditions are imminent or occurring. Recreational boaters should remain in port, or take shelter until waves subside. Commercial vessels should prepare for rough seas and consider remaining in port or taking shelter in port until hazardous seas subside. A Small Craft Advisory means that winds and seas will create a potential hazard to smaller vessels and inexperienced mariners. && $$ PZZ376-032300- /O.EXT.KMFR.SE.W.0078.000000T0000Z-211203T1800Z/ /O.EXT.KMFR.SC.Y.0124.211203T1500Z-211204T0600Z/ Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm- 1002 PM PST Thu Dec 2 2021 ...HAZARDOUS SEAS WARNING NOW IN EFFECT UNTIL 10 AM PST FRIDAY... ...SMALL CRAFT ADVISORY NOW IN EFFECT FROM 7 AM TO 10 PM PST FRIDAY... * WHAT...For the Hazardous Seas Warning, north winds 20 to 30 knots with gusts 25 to 35 knots and very steep, hazardous seas 10 to 14 ft. For the Small Craft Advisory, north winds 15 to 25 kt with gusts up to 30 kt and steep seas 9 to 11 ft. Seas will be due to a mix of short period northerly wind waves and 13 seconds period swell from the west-northwest. * WHERE...The Hazardous Seas Warning is for all areas through 10 AM PST Friday. The advisory is for all except the southeastern most part of the area. * WHEN...For the Hazardous Seas Warning, until 10 AM PST Friday. For the Small Craft Advisory, from 7 AM to 10 PM PST Friday. * IMPACTS...Very steep, hazardous seas could capsize or damage vessels. Steep seas will be hazardous to some small craft, especially inexperienced mariners. * View the hazard area in detail at https://go.usa.gov/x6hks PRECAUTIONARY/PREPAREDNESS ACTIONS... A Hazardous Seas Warning means very steep and hazardous sea conditions are imminent or occurring. Recreational boaters should remain in port, or take shelter until waves subside. Commercial vessels should prepare for rough seas and consider remaining in port or taking shelter in port until hazardous seas subside. A Small Craft Advisory means that winds and seas will create a potential hazard to smaller vessels and inexperienced mariners. && $$ BTL Visit us at https://www.weather.gov/Medford
905 WHUS76 KMFR 031026 MWWMFR URGENT - MARINE WEATHER MESSAGE National Weather Service Medford OR 226 AM PST Fri Dec 3 2021 PZZ350-356-032330- /O.CON.KMFR.SE.W.0078.000000T0000Z-211203T1500Z/ /O.CON.KMFR.SC.Y.0123.000000T0000Z-211204T0600Z/ Coastal waters from Florence to Cape Blanco OR out 10 nm- Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm- 226 AM PST Fri Dec 3 2021 ...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 7 AM PST THIS MORNING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING... * WHAT...For the Hazardous Seas Warning, north winds 15 to 25 knots with gusts to 30 knots and very steep, hazardous seas around 11 ft. For the Small Craft Advisory, north winds 10 to 20 kt with gusts up to 30 kt and steep seas 8 to 10 ft. Seas will be due to a mix of short period northerly wind waves and 13 second period swell from the west-northwest. * WHERE...The Hazardous Seas Warning is for areas beyond about 5NM west of the coast westward from Bandon southward. The Small Craft Advisory is in effect for the remainder of the area. However, the advisory area will diminish late this morning onward to areas about 5NM west of Cape Blanco and to portions of the area north of Cape Blanco west of Bandon and Coos Bay. * WHEN...For the Hazardous Seas Warning, until 7 AM PST this morning. For the Small Craft Advisory, until 10 PM PST this evening. * IMPACTS...Very steep and hazardous seas could capsize or damage vessels. Bar crossings will become especially treacherous. * View the hazard area in detail at https://go.usa.gov/x6hks PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for very steep seas and consider remaining in port until conditions improve. && $$ PZZ370-032330- /O.CON.KMFR.SE.W.0078.000000T0000Z-211203T1800Z/ /O.CON.KMFR.SC.Y.0123.000000T0000Z-211204T0600Z/ Waters from Florence to Cape Blanco OR from 10 to 60 nm- 226 AM PST Fri Dec 3 2021 ...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING... * WHAT...For the Hazardous Seas Warning, north winds 20 to 25 knots with gusts to 30 knots and very steep, hazardous seas around 11 ft. For the Small Craft Advisory, north winds 15 to 25 kt with gusts up to 30 kt and steep seas 8 to 10 ft. Seas will be due to a mix of short period northerly wind waves and 13 seconds period swell from the west-northwest. * WHERE...The Hazardous Seas Warning is for areas west of the coast from Coos Bay southward. The Small Craft Advisory is generally for the remainder of the area. * WHEN...For the Hazardous Seas Warning, until 10 AM PST this morning. For the Small Craft Advisory, until 10 PM PST this evening. * IMPACTS...Very steep and hazardous seas could capsize or damage vessels. Bar crossings will become especially treacherous. * View the hazard area in detail at https://go.usa.gov/x6hks PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for very steep seas and consider remaining in port until conditions improve. && $$ PZZ376-032330- /O.CON.KMFR.SE.W.0078.000000T0000Z-211203T1800Z/ /O.CON.KMFR.SC.Y.0124.211203T1500Z-211204T0600Z/ Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm- 226 AM PST Fri Dec 3 2021 ...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT FROM 7 AM THIS MORNING TO 10 PM PST THIS EVENING... * WHAT...For the Hazardous Seas Warning, north winds 20 to 30 knots with gusts to 35 knots and very steep, hazardous seas 10 to 13 ft. For the Small Craft Advisory, north winds 15 to 25 kt with gusts up to 30 kt and steep seas 9 to 11 ft. Seas will be due to a mix of short period northerly wind waves and 13 second period swell from the west-northwest. * WHERE...The Hazardous Seas Warning is for most areas. The advisory is for all except the southeastern most part of the area. * WHEN...For the Hazardous Seas Warning, until 10 AM PST this morning. For the Small Craft Advisory, from 7 AM this morning to 10 PM PST this evening. * IMPACTS...Very steep and hazardous seas could capsize or damage vessels. Bar crossings will become especially treacherous. * View the hazard area in detail at https://go.usa.gov/x6hks PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for very steep seas and consider remaining in port until conditions improve. && $$ Visit us at https://www.weather.gov/Medford
837 WHUS76 KMFR 031700 MWWMFR URGENT - MARINE WEATHER MESSAGE National Weather Service Medford OR 900 AM PST Fri Dec 3 2021 PZZ370-040600- /O.CON.KMFR.SE.W.0078.000000T0000Z-211203T1800Z/ /O.CON.KMFR.SC.Y.0123.000000T0000Z-211204T0600Z/ Waters from Florence to Cape Blanco OR from 10 to 60 nm- 900 AM PST Fri Dec 3 2021 ...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING... * WHAT...For the Hazardous Seas Warning, north winds 15 to 25 knots and very steep, hazardous seas of 10 to 11 ft. For the Small Craft Advisory, north winds 15 to 20 kt with gusts up to 25 kt and steep seas 9 to 10 ft. Seas will be due to a mix of short period northerly wind waves and 12 seconds period swell from the west-northwest this morning, becoming swell dominated later this afternoon and evening. * WHERE...The Hazardous Seas Warning is for areas beyond 10 nm from shore south of Bandon. The Small Craft Advisory is generally for the remainder of the area. * WHEN...For the Hazardous Seas Warning, until 10 AM PST this morning. For the Small Craft Advisory, until 10 PM PST this evening. * IMPACTS...Very steep and hazardous seas could capsize or damage vessels. Bar crossings will become especially treacherous. * View the hazard area in detail at https://go.usa.gov/x6hks PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for very steep seas and consider remaining in port until conditions improve. && $$ PZZ376-040600- /O.CON.KMFR.SE.W.0078.000000T0000Z-211203T1800Z/ /O.CON.KMFR.SC.Y.0124.000000T0000Z-211204T0600Z/ Waters from Cape Blanco OR to Pt. St. George CA from 10 to 60 nm- 900 AM PST Fri Dec 3 2021 ...HAZARDOUS SEAS WARNING REMAINS IN EFFECT UNTIL 10 AM PST THIS MORNING... ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING... * WHAT...For the Hazardous Seas Warning, north winds 20 to 25 knots and very steep, hazardous seas 10 to 13 ft. For the Small Craft Advisory, north winds 15 to 25 kt with gusts up to 30 kt and steep seas 9 to 11 ft. Seas will be due to a mix of short period northerly wind waves and 12 second period swell from the west-northwest, becoming swell dominated later this afternoon and evening. * WHERE...The Hazardous Seas Warning is for most areas. The advisory is for all except the southeastern most part of the area this morning then all areas late this morning through this evening. * WHEN...For the Hazardous Seas Warning, until 10 AM PST this morning. For the Small Craft Advisory, from 7 AM this morning to 10 PM PST this evening. * IMPACTS...Very steep and hazardous seas could capsize or damage vessels. Bar crossings will become especially treacherous. * View the hazard area in detail at https://go.usa.gov/x6hks PRECAUTIONARY/PREPAREDNESS ACTIONS... Recreational boaters should remain in port. Commercial vessels should prepare for very steep seas and consider remaining in port until conditions improve. && $$ PZZ350-356-040600- /O.CON.KMFR.SC.Y.0123.000000T0000Z-211204T0600Z/ Coastal waters from Florence to Cape Blanco OR out 10 nm- Coastal waters from Cape Blanco OR to Pt. St. George CA out 10 nm- 900 AM PST Fri Dec 3 2021 ...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 10 PM PST THIS EVENING... * WHAT...For the Small Craft Advisory, north winds 10 to 20 kt and steep seas 8 to 10 ft. Seas will be due to a mix of short period northerly wind waves and 12 second period swell from the west-northwest, becoming swell dominated later this afternoon and evening. * WHERE...The Small Craft Advisory is in effect for most areas beyond 3 nm from the coast. * WHEN...For the Hazardous Seas Warning, until 7 AM PST this morning. For the Small Craft Advisory, until 10 PM PST this evening. * IMPACTS...Gusty winds and/or steep seas could capsize or damage smaller vessels. * View the hazard area in detail at https://go.usa.gov/x6hks PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners and those operating smaller vessels should remain in port and avoid the area of hazardous conditions. && $$ Visit us at https://www.weather.gov/Medford
What forecasters said that day
The local office's own words before this hazardous seas warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Medford, OR wrote its last area forecast discussion before this hazardous seas warning went out at Nov 30, 9:34 PM PST, 4 hours 13 minutes earlier.
Area forecast discussion, Nov 30, 9:34 PM PST, 4 hours 13 minutes before
Area Forecast Discussion
National Weather Service Medford OR
934 PM PST Tue Nov 30 2021
.DISCUSSION...The forecast has been updated to increase the daily
duration of valley low clouds and fog during the next couple of
days. Though, near shore northeast winds and the passage of a
very weak shortwave trough are expected to cause stratus to
diminish in Coos and northern and central Douglas County from mid-
morning Wednesday into Wednesday evening. Also, there is a
slightly better chance of breaks in the valley stratus during
Wednesday afternoon compared to the past couple of days. Valley
stratus will be on the increase Wednesday evening into Thursday
morning as another weak front reaches our area.
Please see the previous discussion below for further details
regarding a much needed change to a wetter weather pattern early
next week.
&&
.AVIATION...01/00Z TAFs...
Afternoon clearing of low clouds and fog under the continuing
inversion did not completely scour out of the Shasta Valley
southwest of KSIY, from about Medford north and westward in the
Rogue Valley to between Rogue River and Grant Pass, across much of
the Illinois Valley, and for the valleys from Merlin to Galice to
Azalea and Glendale.
Overnight through Wednesday morning low clouds and fog will reform
across many valley areas similarly to how it did in the last 24
hours. East of the Cascades, however, lower dewpoints than 24 hours
ago mean that freezing fog and low clouds will probably be a bit
later in forming and coverage is likely to be a bit less than 24
hours ago.
Tuesday IFR/LIFR conditions in many valleys are likely to clear from
the coast and east side by noon. West of the Cascades, like today,
fog and low clouds are likely to begin to break up on valley edges
late morning, some areas in the afternoon, and other areas, such as
KMFR and Grants Pass, are most likely to only improve to IFR-MVFR.
Outside of the valleys, VFR conditions are expected to prevail
through the period. ~BTL
&&
.MARINE...Updated 825 PM PST Tuesday, November 30th, 2021...
Winds will become northerly over all of the coastal waters area by
sunrise, but are already northerly across all but the northwestern
portion of the area. These northerly winds are likely to be
moderately gusty from Cape Blanco southward tonight into tomorrow,
but especially tomorrow night through Thursday when they're likely
to increase to solid advisory levels. Before that west swell will
build on Wednesday resulting in advisory conditions for all areas.
Thursday through Friday north winds, combined with a building west
swell, are likely to cause seas to become very steep and hazardous
beyond 10NM west of the coast. Seas are likely to remain elevated
into Saturday before subsiding. A weather pattern change to more
active/normal is then expected to bring more frequent impacting
swell conditions, at times next week, beginning Monday. ~BTL
&&
.PREV DISCUSSION... /Issued 405 PM PST Tue Nov 30 2021/
DISCUSSION...There really isn't much to say about the weather for
the next several days. From now through Friday night, the upper
level ridge will be in firm control, keeping the preferred storm
track, and any significant chances of rain, well to our north.
Instead, we will be under mostly clear skies, with the exception
of the valleys of the West Side and the Klamath Basin, where
night and morning fog and low clouds will be the rule.
There is a chance that the valleys could open up and clear through
the week, depending on if periods of easterly winds or the
trailing end of a front can help mix out the air and disrupt the
valley inversions, but confidence on any given day is low. The
best chance of clearing does appear to be tomorrow, however, so
the forecast has been changed a bit to reflect this possibility.
It will be tough for any approaching systems to make inroads
against what amounts to be a rather resilient ridge. The models do
show a much more robust trough forming in the northeastern
Pacific late in the week, then pushing into the coast Saturday and
Sunday as the ridge weakens and shifts to the west. While the
precipitation with this front will once again likely stay to our
north, it will shift the pattern enough to allow for a second
system to arrive early next week.
The ensembles, while agreeing with the general pattern, have several
differences in how this will unfold but the general idea is that an
atmospheric river sets up, originating from the tropics near Hawaii
(a true pineapple express), and funneling it into the northern
Pacific Northwest Saturday, then a more compact low develops, picks
up the residual moisture plume from the departing system, and pushes
that through our area Monday into Tuesday. Lately, we have seen
these systems in the long term forecast dissipate and shift north in
the days leading up to the event, and this certainly is a
possibility, however, with the ensemble suites showing moist onshore
flow from Seattle all the way to southern California, chances are
much better that we will see some active, wet weather, it just
remains to be seen how much rain and wind we can expect. Given the
somewhat wide range of solutions, suspect we will see many updates
in the coming days as the models come to a better consensus and
confidence increases.
-BPN
&&
.MFR WATCHES/WARNINGS/ADVISORIES...
OR...Air Stagnation Advisory until 10 AM PST Friday for ORZ029-030.
Air Stagnation Advisory until 10 AM PST Friday for ORZ031.
Air Stagnation Advisory until 10 AM PST Thursday for ORZ024-026.
CA...None.
Pacific Coastal Waters...
Small Craft Advisory from 10 AM Wednesday to noon PST Friday for
PZZ350-356-370-376.
Hazardous Seas Watch from Thursday afternoon through Friday
morning for PZZ370-376.
DW/BTLNearby
Hazardous Seas Warnings in Oregon, 2021Every hazardous seas warning 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.