Alert archive / Oregon / Frost Advisories in 2021
Frost Advisory 7, NWS Medford, OR
NWS Medford, OR issued this frost advisory at Apr 10, 2021, 3:00 AM PDT for Coos County, Curry County, Douglas County, Oregon. It took effect at Apr 11, 2021, 2:00 AM PDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Apr 10, 2021, 3:00 AM PDT (10:00 UTC)
- In effect from
- Apr 11, 2021, 2:00 AM PDT
- Expired
- Apr 11, 2021, 9:00 AM PDT
- In force
- 7 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 09:59 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, 10.0 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
- 3741 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
768 WWUS76 KMFR 101000 NPWMFR URGENT - WEATHER MESSAGE National Weather Service Medford OR 300 AM PDT Sat Apr 10 2021 ORZ023-024-026-102200- /O.UPG.KMFR.FZ.A.0003.210411T0900Z-210411T1600Z/ /O.NEW.KMFR.FZ.W.0007.210411T0900Z-210411T1600Z/ Central Douglas County-Eastern Curry County and Josephine County- Jackson County- Including the cities of Drain, Elkton, Sutherlin, Myrtle Creek, Canyonville, Grants Pass, Cave Junction, and Ashland 300 AM PDT Sat Apr 10 2021 ...FREEZE WARNING IN EFFECT FROM 2 AM TO 9 AM PDT SUNDAY... * WHAT...Sub-freezing temperatures as low as 22 expected. * WHERE...Valleys of Douglas, Josephine and Jackson Counties, including the cities of Myrtle Creek, Canyonville, Elkton, Drain, Curtin, Sutherlin, Camas Valley, Grants Pass, Merlin, Murphy, Williams, Provolt, Selma, Cave Junction, O'Brien, Takilma, Ashland, Talent, Phoenix, Central Point, Jacksonville, White City, Eagle Point, Shady Cove, Gold Hill, Rogue River, Ruch, Applegate. * WHEN...From 2 AM to 9 AM PDT Sunday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ ORZ021-022-102200- /O.NEW.KMFR.FR.Y.0007.210411T0900Z-210411T1600Z/ South Central Oregon Coast-Curry County Coast- Including the cities of Coos Bay, North Bend, Reedsport, Bandon, and Coquille 300 AM PDT Sat Apr 10 2021 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 9 AM PDT SUNDAY... * WHAT...Temperatures as low as 28 will result in frost formation. * WHERE...South Central Oregon Coast and Curry County Coast including the cities of Coos Bay, North Bend, Bandon, Coquille, Myrtle Point, Powers. * WHEN...From 2 AM to 9 AM PDT Sunday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Visit us at https://www.weather.gov/Medford
3 follow-up statements
839 WWUS76 KMFR 102100 NPWMFR URGENT - WEATHER MESSAGE National Weather Service Medford OR 200 PM PDT Sat Apr 10 2021 ORZ023-024-026-111200- /O.CON.KMFR.FZ.W.0007.210411T0900Z-210411T1600Z/ Central Douglas County-Eastern Curry County and Josephine County- Jackson County- Including the cities of Drain, Elkton, Sutherlin, Myrtle Creek, Canyonville, Grants Pass, Cave Junction, Medford, and Ashland 200 PM PDT Sat Apr 10 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 9 AM PDT SUNDAY... * WHAT...Sub-freezing temperatures as low as 24 expected. * WHERE...Valleys of Douglas, Josephine and Jackson Counties, including the cities of Myrtle Creek, Canyonville, Elkton, Sutherlin, Grants Pass southward to O'Brien, Medford, Ashland, Talent, Phoenix, Central Point, Jacksonville, White City, Eagle Point, Shady Cove, Gold Hill, Rogue River and Applegate. * WHEN...From 2 AM to 9 AM PDT Sunday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ ORZ021-022-111200- /O.CON.KMFR.FR.Y.0007.210411T0900Z-210411T1600Z/ South Central Oregon Coast-Curry County Coast- Including the cities of Coos Bay, North Bend, Reedsport, Bandon, and Coquille 200 PM PDT Sat Apr 10 2021 ...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 9 AM PDT SUNDAY... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Coastal locations of Douglas, Coos and Curry counties, including the cities of Coos Bay, North Bend, Bandon, Coquille, Reedsport, Myrtle Point and Powers * WHEN...From 2 AM to 9 AM PDT Sunday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Visit us at https://www.weather.gov/Medford
714 WWUS76 KMFR 110953 NPWMFR URGENT - WEATHER MESSAGE National Weather Service Medford OR Issued by National Weather Service Eureka CA 253 AM PDT Sun Apr 11 2021 ORZ023-024-026-111600- /O.CON.KMFR.FZ.W.0007.000000T0000Z-210411T1600Z/ Central Douglas County-Eastern Curry County and Josephine County- Jackson County- Including the cities of Drain, Elkton, Sutherlin, Myrtle Creek, Canyonville, Grants Pass, Cave Junction, Medford, and Ashland 253 AM PDT Sun Apr 11 2021 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 24 expected. * WHERE...Valleys of Douglas, Josephine and Jackson Counties, including the cities of Myrtle Creek, Canyonville, Elkton, Sutherlin, Grants Pass southward to O'Brien, Medford, Ashland, Talent, Phoenix, Central Point, Jacksonville, White City, Eagle Point, Shady Cove, Gold Hill, Rogue River and Applegate. * WHEN...From 2 AM to 9 AM PDT Sunday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ ORZ021-022-111600- /O.CON.KMFR.FR.Y.0007.000000T0000Z-210411T1600Z/ South Central Oregon Coast-Curry County Coast- Including the cities of Coos Bay, North Bend, Reedsport, Bandon, and Coquille 253 AM PDT Sun Apr 11 2021 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * WHAT...Temperatures as low as 33 will result in frost formation. * WHERE...Coastal locations of Douglas, Coos and Curry counties, including the cities of Coos Bay, North Bend, Bandon, Coquille, Reedsport, Myrtle Point and Powers. * WHEN...From 2 AM to 9 AM PDT Sunday. * IMPACTS...Frost could kill sensitive outdoor vegetation if left uncovered. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Visit us at https://www.weather.gov/Medford
230 WWUS76 KMFR 111556 NPWMFR URGENT - WEATHER MESSAGE National Weather Service Medford OR 856 AM PDT Sun Apr 11 2021 ORZ023-024-026-111700- /O.EXP.KMFR.FZ.W.0007.000000T0000Z-210411T1600Z/ Central Douglas County-Eastern Curry County and Josephine County- Jackson County- Including the cities of Drain, Elkton, Sutherlin, Myrtle Creek, Canyonville, Grants Pass, Cave Junction, Medford, and Ashland 856 AM PDT Sun Apr 11 2021 ...FREEZE WARNING WILL EXPIRE AT 9 AM PDT THIS MORNING... Temperatures will continue to rise above critical thresholds this morning. $$ ORZ021-022-111700- /O.EXP.KMFR.FR.Y.0007.000000T0000Z-210411T1600Z/ South Central Oregon Coast-Curry County Coast- Including the cities of Coos Bay, North Bend, Reedsport, Bandon, and Coquille 856 AM PDT Sun Apr 11 2021 ...FROST ADVISORY WILL EXPIRE AT 9 AM PDT THIS MORNING... Temperatures will continue to rise above critical thresholds this morning. $$ 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 |
|---|---|---|---|---|
| Apr 9, 8:35 PM PDT | Small Craft Advisory | MFR | 5 days | |
| Apr 10, 2:05 AM PDT | Gale Warning | MFR | 67 hr | |
| Apr 10, 2:05 AM PDT | Hazardous Seas Warning | MFR | 5 days | |
| Apr 10, 3:00 AM PDT | Freeze Warning | MFR | Coos, Curry, Douglas, Jackson, Josephine | 30 hr |
Nearby
Frost Advisories in Oregon, 2021Every frost 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.