Alert archive / Oregon / Frost Advisories in 2017
Frost Advisory 21, NWS Medford, OR
NWS Medford, OR issued this frost advisory at Oct 13, 2017, 8:04 PM PDT for Coos County, Curry County, Douglas County, Oregon. It took effect at Oct 14, 2017, 1:00 AM PDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Oct 13, 2017, 8:04 PM PDT (03:04 UTC)
- In effect from
- Oct 14, 2017, 1:00 AM PDT
- Expired
- Oct 14, 2017, 9:00 AM PDT
- In force
- 8 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 03:08 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, 3.1 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
- 33 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 1203 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 111 m²/s²
- 0-3 km storm-relative helicity
- 178 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
189 WWUS76 KMFR 140304 NPWMFR URGENT - WEATHER MESSAGE National Weather Service Medford OR 804 PM PDT Fri Oct 13 2017 ORZ024-026-141600- /O.CON.KMFR.FZ.W.0019.171014T0800Z-171014T1600Z/ Eastern Curry County and Josephine County-Jackson County- Including the city of Cave Junction 804 PM PDT Fri Oct 13 2017 ...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 9 AM PDT SATURDAY... * Temperature...28 to 32 Degrees. A few isolated spots could see temperatures drop to 26 degrees. * Locations include...The Illinois Valley, Applegate Valley, and portions of the Rogue Valley including Jacksonville, Murphy, White City, Gold Hill, Rogue River, Shady Cove, Butte Falls, and the outskirts of Grants Pass, Medford, and Ashland. This also includes the city of Prospect. * Impacts...Plants sensitive to freezing temperatures could be damaged or killed. * View the hazard area in detail at https://www.wrh.noaa.gov/mfr/HAZARD Precautionary/preparedness actions... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will kill crops and other sensitive vegetation. && $$ CAZ080-081-141600- /O.CON.KMFR.FZ.W.0019.171014T0800Z-171014T1600Z/ Western Siskiyou County-Central Siskiyou County- Including the city of Happy Camp 804 PM PDT Fri Oct 13 2017 ...FREEZE WARNING REMAINS IN EFFECT FROM 1 AM TO 9 AM PDT SATURDAY... * Temperature...28 to 32 degrees. A few isolated spots could see temperatures drop to 26 degrees. * Locations include...the Klamath River Valley including Klamath River, Seiad Valley, Happy Camp, and Scott Bar. * Impacts...Plants sensitive to freezing temperatures could be damaged or killed. * View the hazard area in detail at https://www.wrh.noaa.gov/mfr/HAZARD Precautionary/preparedness actions... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will kill crops and other sensitive vegetation. && $$ ORZ021-023-141600- /O.NEW.KMFR.FR.Y.0021.171014T0800Z-171014T1600Z/ South Central Oregon Coast-Central Douglas County- Including the cities of Drain, Roseburg, Sutherlin, Green, Myrtle Creek, Canyonville, and Glendale 804 PM PDT Fri Oct 13 2017 ...FROST ADVISORY IN EFFECT FROM 1 AM TO 9 AM PDT SATURDAY... The National Weather Service in Medford has issued a Frost Advisory...which is in effect from 1 AM to 9 AM PDT Saturday. * Temperature...33 to 36 degrees * Locations include...Areas of the Umpqua basin including Roseburg, Camas Valley, Drain, Curtain, Sutherlin, and Myrtle Point. * Impacts...Plants sensitive to frost could become damaged or killed. * View the hazard area in detail at https://www.wrh.noaa.gov/mfr/HAZARD Precautionary/preparedness actions... Plants sensitive to frost should be covered or brought inside. A Frost Advisory means that widespread frost is expected. Sensitive outdoor plants may be killed if left uncovered. && $$
2 follow-up statements
673 WWUS76 KMFR 141308 NPWMFR URGENT - WEATHER MESSAGE National Weather Service Medford OR 608 AM PDT Sat Oct 14 2017 ORZ024-026-141600- /O.CON.KMFR.FZ.W.0019.000000T0000Z-171014T1600Z/ Eastern Curry County and Josephine County-Jackson County- Including the city of Cave Junction 608 AM PDT Sat Oct 14 2017 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * Temperature...28 to 32 Degrees. A few isolated spots could see temperatures drop to 26 degrees. * Locations include...The Illinois Valley, Applegate Valley, and portions of the Rogue Valley including Jacksonville, Murphy, White City, Gold Hill, Rogue River, Shady Cove, Butte Falls, and the outskirts of Grants Pass, Medford, and Ashland. This also includes the town of Prospect. * Impacts...Plants sensitive to freezing temperatures could be damaged or killed. * View the hazard area in detail at https://www.wrh.noaa.gov/mfr/HAZARD Precautionary/preparedness actions... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will kill crops and other sensitive vegetation. && $$ CAZ080-081-141600- /O.CON.KMFR.FZ.W.0019.000000T0000Z-171014T1600Z/ Western Siskiyou County-Central Siskiyou County- Including the city of Happy Camp 608 AM PDT Sat Oct 14 2017 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * Temperature...28 to 32 degrees. A few isolated spots could see temperatures drop to 26 degrees. * Locations include...the Klamath River Valley including Klamath River, Seiad Valley, Happy Camp, and Scott Bar. * Impacts...Plants sensitive to freezing temperatures could be damaged or killed. * View the hazard area in detail at https://www.wrh.noaa.gov/mfr/HAZARD Precautionary/preparedness actions... A Freeze Warning means sub-freezing temperatures are imminent or highly likely. These conditions will kill crops and other sensitive vegetation. && $$ ORZ021-023-141600- /O.CON.KMFR.FR.Y.0021.000000T0000Z-171014T1600Z/ South Central Oregon Coast-Central Douglas County- Including the cities of Drain, Roseburg, Sutherlin, Green, Myrtle Creek, Canyonville, and Glendale 608 AM PDT Sat Oct 14 2017 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... * Temperature...33 to 36 degrees * Locations include...Areas of the Umpqua basin including Roseburg, Camas Valley, Drain, Curtain, Sutherlin, and Myrtle Point. * Impacts...Plants sensitive to frost could become damaged or killed. * View the hazard area in detail at https://www.wrh.noaa.gov/mfr/HAZARD Precautionary/preparedness actions... Plants sensitive to frost should be covered or brought inside. A Frost Advisory means that widespread frost is expected. Sensitive outdoor plants may be killed if left uncovered. && $$
165 WWUS76 KMFR 141600 NPWMFR URGENT - WEATHER MESSAGE National Weather Service Medford OR 900 AM PDT Sat Oct 14 2017 ORZ024-026-141700- /O.EXP.KMFR.FZ.W.0019.000000T0000Z-171014T1600Z/ Eastern Curry County and Josephine County-Jackson County- Including the city of Cave Junction 900 AM PDT Sat Oct 14 2017 ...FREEZE WARNING WILL EXPIRE AT 9 AM PDT THIS MORNING... Most of the valleys did get temperatures at or below freezing this morning. We will evaluate the coverage and length of the freezing temperatures to determine if continued warnings are warranted. $$ CAZ080-081-141700- /O.EXP.KMFR.FZ.W.0019.000000T0000Z-171014T1600Z/ Western Siskiyou County-Central Siskiyou County- Including the city of Happy Camp 900 AM PDT Sat Oct 14 2017 ...FREEZE WARNING WILL EXPIRE AT 9 AM PDT THIS MORNING... Most of the valleys did get temperatures at or below freezing this morning. We will evaluate the coverage and length of the freezing temperatures to determine if continued warnings are warranted. $$ ORZ021-023-141700- /O.EXP.KMFR.FR.Y.0021.000000T0000Z-171014T1600Z/ South Central Oregon Coast-Central Douglas County- Including the cities of Drain, Roseburg, Sutherlin, Green, Myrtle Creek, Canyonville, and Glendale 900 AM PDT Sat Oct 14 2017 ...FROST ADVISORY WILL EXPIRE AT 9 AM PDT THIS MORNING... Much of the valleys saw frost this morning, but it appears not to be widespread. If widespread frost is expected, a frost advisory will be issued. $$ Sven
The office that day
Everything else NWS Medford, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 13, 6:34 PM PDT | Freeze Warning | MFR | Curry, Jackson, Josephine | 14 hr |
| Oct 14, 2:26 PM PDT | Frost Advisory | MFR | Coos, Curry, Douglas | 19 hr |
| Oct 14, 2:26 PM PDT | Freeze Warning | MFR | Curry, Jackson, Josephine, Klamath | 19 hr |
| Oct 14, 2:57 PM PDT | Small Craft Advisory | MFR | 26 hr |
Nearby
Frost Advisories in Oregon, 2017Every frost advisory in 2017
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.