Alert archive / Oregon / Freeze Warnings in 2021
Freeze Warning 8, NWS Medford, OR
NWS Medford, OR issued this freeze warning at May 7, 2021, 2:22 PM PDT for Curry County, Jackson County, Josephine County, Oregon. It took effect at May 8, 2021, 2:00 AM PDT. It was in force for 6 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
- May 7, 2021, 2:22 PM PDT (21:22 UTC)
- In effect from
- May 8, 2021, 2:00 AM PDT
- Expired
- May 8, 2021, 8:00 AM PDT
- In force
- 6 hr
- Issued by
- NWS Medford, OR
Counties Curry County, OR, Jackson County, OR, Josephine County, OR
The radar
The Medford radar (KMAX), 75 km from the middle of the area, began a volume at 21:24 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 12:00Z, 9.4 hours before the alert went out and 58 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
- 1114 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 26 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
037 WWUS76 KMFR 072122 NPWMFR URGENT - WEATHER MESSAGE National Weather Service Medford OR 222 PM PDT Fri May 7 2021 ORZ026-081230- /O.UPG.KMFR.FZ.A.0004.210508T0300Z-210508T1700Z/ /O.NEW.KMFR.FZ.W.0008.210508T0900Z-210508T1700Z/ Jackson County- 222 PM PDT Fri May 7 2021 ...FREEZE WARNING IN EFFECT FROM 2 AM TO 10 AM PDT SATURDAY... * WHAT...Sub-freezing temperatures as low as 28 expected. * WHERE...Portions of the Applegate Valley and Rogue Valley, Shady Cove, and Prospect in Jackson County. * WHEN...From 2 AM to 10 AM PDT Saturday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. * ADDITIONAL DETAILS...Frost is likely across many mid-elevation and valley locations in southwestern Oregon and northwestern California, including in the valleys of Jackson, Josephine, and Siskiyou counties later tonight into Saturday morning. Sensitive vegetation could be damaged and stunned if left unprotected.. * 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. && $$ ORZ024-081230- /O.NEW.KMFR.FZ.W.0008.210508T0900Z-210508T1700Z/ Eastern Curry County and Josephine County- Including the city of Cave Junction 222 PM PDT Fri May 7 2021 ...FREEZE WARNING IN EFFECT FROM 2 AM TO 10 AM PDT SATURDAY... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...Eastern Curry County and Josephine County, including the Illinois Valley. * WHEN...From 2 AM to 10 AM PDT Saturday. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. * ADDITIONAL DETAILS...Frost is likely across many mid-elevation and valley locations in southwestern Oregon and northwestern California, including in the valleys of Jackson, Josephine, and Siskiyou counties later tonight into Saturday morning. Sensitive vegetation could be damaged and stunned if left unprotected.. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. To prevent freezing and possible bursting of outdoor water pipes they should be wrapped, drained, or allowed to drip slowly. Those that have in-ground sprinkler systems should drain them and cover above- ground pipes to protect them from freezing. && $$ Visit us at https://www.weather.gov/Medford
2 follow-up statements
357 WWUS76 KMFR 081141 NPWMFR URGENT - WEATHER MESSAGE National Weather Service Medford OR 441 AM PDT Sat May 8 2021 ORZ024-026-081500- /O.EXT.KMFR.FZ.W.0008.000000T0000Z-210508T1500Z/ Eastern Curry County and Josephine County-Jackson County- Including the city of Cave Junction 441 AM PDT Sat May 8 2021 ...FREEZE WARNING NOW IN EFFECT UNTIL 8 AM PDT THIS MORNING... * WHAT...Sub-freezing temperatures as low as 30 expected. * WHERE...Portions of the Applegate Valley , Rogue Valley, Shady Cove, and Prospect in Jackson County. * WHEN...Until 8 AM PDT this morning. * IMPACTS...Frost and freeze conditions will kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. * ADDITIONAL DETAILS...Frost is likely across many mid-elevation and valley locations in southwestern Oregon and northwestern California, including in the valleys of Jackson, Josephine, and Siskiyou counties later tonight into Saturday morning. Sensitive vegetation could be damaged and stunned if left unprotected.. * 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. && $$ Visit us at https://www.weather.gov/Medford
800 WWUS76 KMFR 081525 NPWMFR URGENT - WEATHER MESSAGE National Weather Service Medford OR 825 AM PDT Sat May 8 2021 ORZ024-026-081630- /O.EXP.KMFR.FZ.W.0008.000000T0000Z-210508T1500Z/ Eastern Curry County and Josephine County-Jackson County- Including the city of Cave Junction 825 AM PDT Sat May 8 2021 ...FREEZE WARNING HAS EXPIRED... Low temperatures tonight will be warmer than last night, and a freeze in the valleys is not expected. $$ 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 |
|---|---|---|---|---|
| May 6, 7:35 PM PDT | Freeze Watch | MFR | Jackson | 19 hr |
| May 6, 9:46 PM PDT | Small Craft Advisory | MFR | 10 days | |
| May 7, 2:17 AM PDT | Hazardous Seas Warning | MFR | 20 hr |
Nearby
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.