Alert archive / Oregon / Freeze Warnings in 2021
Freeze Warning 3, NWS Medford, OR
NWS Medford, OR issued this freeze warning at Mar 30, 2021, 2:41 PM PDT for Curry County, Jackson County, Josephine County, Oregon. It took effect at Mar 31, 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
- Mar 30, 2021, 2:41 PM PDT (21:41 UTC)
- In effect from
- Mar 31, 2021, 2:00 AM PDT
- Expired
- Mar 31, 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 21:41 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, 9.7 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
- 1037 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- -38 m²/s²
- 0-3 km storm-relative helicity
- 29 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
552 WWUS76 KMFR 302141 NPWMFR URGENT - WEATHER MESSAGE National Weather Service Medford OR 241 PM PDT Tue Mar 30 2021 ORZ024-026-310545- /O.NEW.KMFR.FZ.W.0003.210331T0900Z-210331T1500Z/ Eastern Curry County and Josephine County-Jackson County- Including the cities of Grants Pass, Cave Junction, Medford, and Ashland 241 PM PDT Tue Mar 30 2021 ...FREEZE WARNING IN EFFECT FROM 2 AM TO 8 AM PDT WEDNESDAY... * WHAT...Sub-freezing temperatures as low as 27 expected. * WHERE...Illinois Valley, Applegate Valley and Rogue Valley, including the cities of Selma, Cave Junction, Merlin, Grants Pass, Ruch, Williams, Provolt, Rogue River, Medford, Ashland and Shady Cove. * WHEN...From 2 AM to 8 AM PDT Wednesday. * IMPACTS...Freeze conditions could kill crops and other sensitive vegetation. * ADDITIONAL DETAILS...The coldest temperatures will occur in the Applegate Valley near Provolt and Williams. Temperatures in the Rogue Valley will be a few degrees warmer in the lower 30's. * 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. && $$ Visit us at https://www.weather.gov/Medford
2 follow-up statements
219 WWUS76 KMFR 310320 NPWMFR URGENT - WEATHER MESSAGE National Weather Service Medford OR 820 PM PDT Tue Mar 30 2021 ORZ024-026-311500- /O.CON.KMFR.FZ.W.0003.210331T0900Z-210331T1500Z/ Eastern Curry County and Josephine County-Jackson County- Including the cities of Grants Pass, Cave Junction, Medford, and Ashland 820 PM PDT Tue Mar 30 2021 ...FREEZE WARNING REMAINS IN EFFECT FROM 2 AM TO 8 AM PDT WEDNESDAY... * WHAT...Sub-freezing temperatures as low as 27 expected. * WHERE...Illinois Valley, Applegate Valley, and Rogue Valley, including the cities of Selma, Cave Junction, Merlin, Grants Pass, Ruch, Williams, Provolt, Rogue River, Medford, Ashland, and Shady Cove. * WHEN...From 2 AM to 8 AM PDT Wednesday. * IMPACTS...Freeze conditions could kill crops and other sensitive vegetation. * ADDITIONAL DETAILS...The coldest temperatures will occur in the Applegate Valley near Provolt and Williams. Temperatures in the Rogue Valley will be a few degrees warmer in the lower 30s. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold. && $$ Visit us at https://www.weather.gov/Medford
610 WWUS76 KMFR 311433 NPWMFR URGENT - WEATHER MESSAGE National Weather Service Medford OR 733 AM PDT Wed Mar 31 2021 ORZ024-026-311545- /O.EXP.KMFR.FZ.W.0003.000000T0000Z-210331T1500Z/ Eastern Curry County and Josephine County-Jackson County- Including the cities of Grants Pass, Cave Junction, Medford, and Ashland 733 AM PDT Wed Mar 31 2021 ...FREEZE WARNING WILL EXPIRE AT 8 AM PDT THIS MORNING... $$ Visit us at https://www.weather.gov/Medford
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.