Alert archive / Oregon / Frost Advisories in 2021
Frost Advisory 3, NWS Medford, OR
NWS Medford, OR issued this frost advisory at Mar 15, 2021, 9:41 PM PDT for Coos County, Curry County, Douglas County, Oregon. It took effect at Mar 16, 2021, 12:00 AM PDT. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Mar 15, 2021, 9:41 PM PDT (04:41 UTC)
- In effect from
- Mar 16, 2021, 12:00 AM PDT
- Expired
- Mar 16, 2021, 9:00 AM PDT
- In force
- 9 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 04:38 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, 4.7 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
- 3 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 1523 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 49 m²/s²
- 0-3 km storm-relative helicity
- 40 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
726 WWUS76 KMFR 160441 NPWMFR URGENT - WEATHER MESSAGE National Weather Service Medford OR 941 PM PDT Mon Mar 15 2021 ORZ021-022-161600- /O.NEW.KMFR.FR.Y.0003.210316T0700Z-210316T1600Z/ /O.CON.KMFR.FZ.W.0001.210316T0700Z-210316T1600Z/ South Central Oregon Coast-Curry County Coast- Including the cities of Coos Bay, North Bend, Reedsport, Bandon, Port Orford, Coquille, Harbor, and Gold Beach 941 PM PDT Mon Mar 15 2021 ...FROST ADVISORY IN EFFECT UNTIL 9 AM PDT TUESDAY... ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM PDT TUESDAY... * WHAT...For the Freeze Warning, sub-freezing temperatures as low as 25 expected. For the Frost Advisory, temperatures 33 to 36 will result in frost formation. * WHERE...Freeze Warning is for most areas just inland from the immediate coastline including Lakeside, Coos Bay, Coquille, Myrtle Point. Frost Advisory is in effect for the immediate coastline including Bandon, Port Orford, and Brookings. * WHEN...Until 9 AM PDT Tuesday. * 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/mfr/HAZARD PRECAUTIONARY/PREPAREDNESS ACTIONS... * Take steps now to protect tender plants from the cold. && $$ Visit us at https://www.weather.gov/Medford
1 follow-up statement
078 WWUS76 KMFR 161538 NPWMFR URGENT - WEATHER MESSAGE National Weather Service Medford OR 838 AM PDT Tue Mar 16 2021 ORZ021-022-161645- /O.EXP.KMFR.FZ.W.0001.000000T0000Z-210316T1600Z/ /O.EXP.KMFR.FR.Y.0003.000000T0000Z-210316T1600Z/ South Central Oregon Coast-Curry County Coast- Including the cities of Coos Bay, North Bend, Reedsport, Bandon, Port Orford, Coquille, Harbor, and Gold Beach 838 AM PDT Tue Mar 16 2021 ...FREEZE WARNING WILL EXPIRE AT 9 AM PDT THIS MORNING... ...FROST ADVISORY WILL EXPIRE AT 9 AM PDT THIS MORNING... Temperatures will continue to warm above critical values this morning. $$ 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 |
|---|---|---|---|---|
| Mar 16, 2:19 AM PDT | Gale Watch | MFR | 12 hr | |
| Mar 16, 1:28 PM PDT | Frost Advisory | MFR | Coos, Curry, Douglas | 19 hr |
| Mar 16, 2:08 PM PDT | Gale Warning | MFR | 61 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.