Alert archive / Oregon / Freeze Warnings in 2011
Freeze Warning 13, NWS Medford, OR
NWS Medford, OR issued this freeze warning at Apr 18, 2011, 3:07 AM PDT for 5 counties in Oregon. It took effect at Apr 19, 2011, 3:00 AM PDT. It was in force for 5 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
- Apr 18, 2011, 3:07 AM PDT (10:07 UTC)
- In effect from
- Apr 19, 2011, 3:00 AM PDT
- Expired
- Apr 19, 2011, 8:00 AM PDT
- In force
- 5 hr
- Issued by
- NWS Medford, OR
Counties Coos County, OR, Curry County, OR, Douglas County, OR, Jackson County, OR, Josephine County, OR
The radar
The Medford radar (KMAX), 101 km from the middle of the area, began a volume at 10:08 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, 10.1 hours before the alert went out and 75 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
- 1 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 1020 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- 123 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
339 WWUS76 KMFR 181007 NPWMFR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 307 AM PDT MON APR 18 2011 ORZ023-024-026-182245- /O.UPG.KMFR.FZ.A.0010.110419T1000Z-110419T1500Z/ /O.NEW.KMFR.FZ.W.0013.110419T1000Z-110419T1500Z/ CENTRAL DOUGLAS COUNTY-EASTERN CURRY COUNTY AND JOSEPHINE COUNTY- JACKSON COUNTY- INCLUDING THE CITIES OF...MEDFORD...ASHLAND 307 AM PDT MON APR 18 2011 ...FREEZE WARNING IN EFFECT FROM 3 AM TO 8 AM PDT TUESDAY... THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A FREEZE WARNING...WHICH IS IN EFFECT FROM 3 AM TO 8 AM PDT TUESDAY. THE FREEZE WATCH IS NO LONGER IN EFFECT. * TEMPERATURE: OVERNIGHT LOWS WILL DIP INTO THE UPPER 20S TO LOWER 30S LATE TONIGHT INTO TUESDAY MORNING. * IMPACTS: SENSITIVE VEGETATION MAY BE DAMAGED OR KILLED IF LEFT UNPROTECTED. * INVERSION: AN INVERSION IS LIKELY TUESDAY MORNING WITH TEMPERATURES JUST ABOVE FREEZING A FEW HUNDRED FEET ABOVE THE VALLEY FLOORS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ SK
3 follow-up statements
550 WWUS76 KMFR 182114 NPWMFR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 214 PM PDT MON APR 18 2011 ORZ023-190515- /O.NEW.KMFR.FR.Y.0011.110419T1000Z-110419T1500Z/ /O.CON.KMFR.FZ.W.0013.110419T1000Z-110419T1500Z/ CENTRAL DOUGLAS COUNTY- INCLUDING THE CITIES OF...ROSEBURG...SUTHERLIN...GREEN 214 PM PDT MON APR 18 2011 ...FROST ADVISORY IN EFFECT FROM 3 AM TO 8 AM PDT TUESDAY... ...FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 8 AM PDT TUESDAY... THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 3 AM TO 8 AM PDT TUESDAY. A FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 8 AM PDT TUESDAY. * TEMPERATURE: OVERNIGHT TEMPERATURES WILL LOWER TO 29 TO 32 DEGREES EARLY TUESDAY MORNING EXCEPT FOR SLIGHTLY WARMER TEMPERATURES AROUND 33 TO 34 DEGREES IN THE LOWER ELEVATIONS OF THE UMPQUA BASIN...ESPECIALLY NEAR ROSEBURG. * IMPACTS: SENSITIVE VEGETATION MAY BE DAMAGED OR KILLED IF LEFT UNPROTECTED. * INVERSION: A VERY SHALLOW INVERSION IS LIKELY TUESDAY MORNING WITH TEMPERATURES OF AROUND A FEW DEGREES ABOVE FREEZING LOCATED A FEW HUNDRED FEET ABOVE VALLEY FLOORS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION. A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ ORZ024-026-190515- /O.CON.KMFR.FZ.W.0013.110419T1000Z-110419T1500Z/ EASTERN CURRY COUNTY AND JOSEPHINE COUNTY-JACKSON COUNTY- INCLUDING THE CITIES OF...MEDFORD...ASHLAND 214 PM PDT MON APR 18 2011 ...FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 8 AM PDT TUESDAY... A FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 8 AM PDT TUESDAY. * TEMPERATURE: OVERNIGHT TEMPERATURES ARE EXPECTED TO LOWER TO 28 TO 32 DEGREES EARLY TUESDAY MORNING. * IMPACTS: SENSITIVE VEGETATION MAY BE DAMAGED OR KILLED IF LEFT UNPROTECTED. * INVERSION: A VERY SHALLOW INVERSION IS LIKELY TUESDAY MORNING WITH TEMPERATURES OF AROUND A FEW DEGREES ABOVE FREEZING LOCATED A FEW HUNDRED FEET ABOVE VALLEY FLOORS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ ORZ021-022-190515- /O.NEW.KMFR.FR.Y.0011.110419T1000Z-110419T1500Z/ SOUTH CENTRAL OREGON COAST-CURRY COUNTY COAST- INCLUDING THE CITY OF...COQUILLE 214 PM PDT MON APR 18 2011 ...FROST ADVISORY IN EFFECT FROM 3 AM TO 8 AM PDT TUESDAY... THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 3 AM TO 8 AM PDT TUESDAY. * TEMPERATURE: OVERNIGHT TEMPERATURES ARE EXPECTED TO LOWER TO 33 TO 36 DEGREES EARLY TUESDAY MORNING. COLDEST TEMPERATURES EXPECTED IN VALLEYS JUST INLAND FROM THE COAST. * IMPACTS: SENSITIVE VEGETATION MAY BE DAMAGED OR KILLED IF LEFT UNPROTECTED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ CC
414 WWUS76 KMFR 190509 NPWMFR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 1009 PM PDT MON APR 18 2011 ORZ023-191500- /O.CON.KMFR.FZ.W.0013.110419T1000Z-110419T1500Z/ /O.CON.KMFR.FR.Y.0011.110419T1000Z-110419T1500Z/ CENTRAL DOUGLAS COUNTY- INCLUDING THE CITIES OF...ROSEBURG...SUTHERLIN...GREEN 1009 PM PDT MON APR 18 2011 ...FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 8 AM PDT TUESDAY... ...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 8 AM PDT TUESDAY... A FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 8 AM PDT TUESDAY. A FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 8 AM PDT TUESDAY. * TEMPERATURE: OVERNIGHT TEMPERATURES WILL LOWER TO 29 TO 32 DEGREES EARLY TUESDAY MORNING EXCEPT FOR SLIGHTLY WARMER TEMPERATURES AROUND 33 TO 34 DEGREES IN THE LOWER ELEVATIONS OF THE UMPQUA BASIN...ESPECIALLY NEAR ROSEBURG. * IMPACTS: SENSITIVE VEGETATION MAY BE DAMAGED OR KILLED IF LEFT UNPROTECTED. * INVERSION: A VERY SHALLOW INVERSION IS LIKELY TUESDAY MORNING WITH TEMPERATURES OF AROUND A FEW DEGREES ABOVE FREEZING LOCATED A FEW HUNDRED FEET ABOVE VALLEY FLOORS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION. A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ ORZ024-026-191500- /O.CON.KMFR.FZ.W.0013.110419T1000Z-110419T1500Z/ EASTERN CURRY COUNTY AND JOSEPHINE COUNTY-JACKSON COUNTY- INCLUDING THE CITIES OF...MEDFORD...ASHLAND 1009 PM PDT MON APR 18 2011 ...FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 8 AM PDT TUESDAY... A FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 8 AM PDT TUESDAY. * TEMPERATURE: OVERNIGHT TEMPERATURES ARE EXPECTED TO LOWER TO 28 TO 32 DEGREES EARLY TUESDAY MORNING. * IMPACTS: SENSITIVE VEGETATION MAY BE DAMAGED OR KILLED IF LEFT UNPROTECTED. * INVERSION: A VERY SHALLOW INVERSION IS LIKELY TUESDAY MORNING WITH TEMPERATURES OF AROUND A FEW DEGREES ABOVE FREEZING LOCATED A FEW HUNDRED FEET ABOVE VALLEY FLOORS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ ORZ021-022-191500- /O.CON.KMFR.FR.Y.0011.110419T1000Z-110419T1500Z/ SOUTH CENTRAL OREGON COAST-CURRY COUNTY COAST- INCLUDING THE CITY OF...COQUILLE 1009 PM PDT MON APR 18 2011 ...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 8 AM PDT TUESDAY... A FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 8 AM PDT TUESDAY. * TEMPERATURE: OVERNIGHT TEMPERATURES ARE EXPECTED TO LOWER TO 33 TO 36 DEGREES EARLY TUESDAY MORNING. COLDEST TEMPERATURES EXPECTED IN VALLEYS JUST INLAND FROM THE COAST. * IMPACTS: SENSITIVE VEGETATION MAY BE DAMAGED OR KILLED IF LEFT UNPROTECTED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$
690 WWUS76 KMFR 191459 NPWMFR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 758 AM PDT TUE APR 19 2011 ORZ023-191600- /O.EXP.KMFR.FZ.W.0013.000000T0000Z-110419T1500Z/ /O.EXP.KMFR.FR.Y.0011.000000T0000Z-110419T1500Z/ CENTRAL DOUGLAS COUNTY- INCLUDING THE CITIES OF...ROSEBURG...SUTHERLIN...GREEN 758 AM PDT TUE APR 19 2011 ...FREEZE WARNING WILL EXPIRE AT 8 AM PDT THIS MORNING... ...FROST ADVISORY WILL EXPIRE AT 8 AM PDT THIS MORNING... THE FREEZE WARNING WILL EXPIRE AT 8 AM PDT THIS MORNING. THE FROST ADVISORY WILL EXPIRE AT 8 AM PDT THIS MORNING. $$ ORZ024-026-191600- /O.EXP.KMFR.FZ.W.0013.000000T0000Z-110419T1500Z/ EASTERN CURRY COUNTY AND JOSEPHINE COUNTY-JACKSON COUNTY- INCLUDING THE CITIES OF...MEDFORD...ASHLAND 758 AM PDT TUE APR 19 2011 ...FREEZE WARNING WILL EXPIRE AT 8 AM PDT THIS MORNING... THE FREEZE WARNING WILL EXPIRE AT 8 AM PDT THIS MORNING. $$ ORZ021-022-191600- /O.EXP.KMFR.FR.Y.0011.000000T0000Z-110419T1500Z/ SOUTH CENTRAL OREGON COAST-CURRY COUNTY COAST- INCLUDING THE CITY OF...COQUILLE 758 AM PDT TUE APR 19 2011 ...FROST ADVISORY WILL EXPIRE AT 8 AM PDT THIS MORNING... THE FROST ADVISORY WILL EXPIRE AT 8 AM PDT THIS MORNING. $$
The office that day
Everything else NWS Medford, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 18, 2:14 PM PDT | Frost Advisory | MFR | Coos, Curry, Douglas | 18 hr |
| Apr 18, 2:30 PM PDT | Small Craft Advisory for Winds | MFR | 43 hr | |
| Apr 18, 2:30 PM PDT | Small Craft Advisory for Hazardous Seas | MFR | 39 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.