Alert archive / Oregon / Frost Advisories in 2014
Frost Advisory 21, NWS Medford, OR
NWS Medford, OR issued this frost advisory at Nov 17, 2014, 9:25 AM PST for Coos County, Curry County, Douglas County, Oregon. It took effect at Nov 18, 2014, 12:00 AM PST. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Nov 17, 2014, 9:25 AM PST (17:25 UTC)
- In effect from
- Nov 18, 2014, 12:00 AM PST
- Expired
- Nov 18, 2014, 9:00 AM PST
- 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 17:30 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, 5.4 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1837 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- -40 m²/s²
- 0-3 km storm-relative helicity
- 66 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
219 WWUS76 KMFR 171725 NPWMFR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 925 AM PST MON NOV 17 2014 ...FROST AND FREEZING CONDITIONS AGAIN TUESDAY MORNING... .A DRY AIR MASS IN PLACE WILL RESULT IN COLD TEMPERATURES AGAIN TONIGHT INTO TUESDAY MORNING. FROST AND FREEZING CONDITIONS ARE EXPECTED AT MANY LOCATIONS. IT WILL NOT BE AS COLD AS IT WAS THIS MORNING. ORZ023-180600- /O.EXP.KMFR.FZ.W.0020.000000T0000Z-141117T1700Z/ /O.EXP.KMFR.FR.Y.0020.000000T0000Z-141117T1700Z/ /O.UPG.KMFR.FZ.A.0015.141118T0800Z-141118T1700Z/ /O.NEW.KMFR.FR.Y.0021.141118T0800Z-141118T1700Z/ /O.NEW.KMFR.FZ.W.0021.141118T0800Z-141118T1700Z/ CENTRAL DOUGLAS COUNTY- INCLUDING THE CITIES OF...DRAIN...ELKTON...ROSEBURG... SUTHERLIN...GREEN...MYRTLE CREEK...CANYONVILLE 925 AM PST MON NOV 17 2014 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST TUESDAY... ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST TUESDAY... THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A FREEZE WARNING...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST TUESDAY. A FROST ADVISORY HAS ALSO BEEN ISSUED. THIS FROST ADVISORY IS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST TUESDAY. * LOW TEMPERATURES: 28 TO 32 DEGREES IN THE FREEZE WARNING AREA. 33 TO 36 DEGREES IN THE FROST ADVISORY AREA. * TIMING: TEMPERATURES WILL DROP INTO THE FROST RANGE BEGINNING AROUND MIDNIGHT AND THEN WILL CONTINUE TO FALL THROUGH THE HOUR OF SUNRISE. TEMPERATURES ARE EXPECTED TO INCREASE TO ABOVE 36 DEGREES BY 9 AM PST. * TEMPERATURE INVERSION: A FAIRLY STRONG TEMPERATURE INVERSION WILL EXIST ABOVE THE SURFACE OF VALLEYS. * LOCATIONS IN THE FREEZE WARNING INCLUDE: DRAIN...ELKTON... SUTHERLIN...SCOTTSBURG...CANYONVILLE AND CAMAS VALLEY. * LOCATIONS IN THE FROST ADVISORY INCLUDE: UMPQUA...ROSEBURG GREEN...WINCHESTER...MYRTLE CREEK...GREEN...RIDDLE AND TRI- CITY. * IMPACTS: FROST AND FREEZING TEMPERATURES WILL HARM OR KILL SENSITIVE VEGETATION LEFT UNPROTECTED DURING THIS TIME PERIOD. 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. && $$ ORZ021-180600- /O.EXP.KMFR.FZ.W.0020.000000T0000Z-141117T1700Z/ /O.EXP.KMFR.FR.Y.0020.000000T0000Z-141117T1700Z/ /O.NEW.KMFR.FR.Y.0021.141118T0800Z-141118T1700Z/ SOUTH CENTRAL OREGON COAST- INCLUDING THE CITIES OF...REEDSPORT...COQUILLE 925 AM PST MON NOV 17 2014 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST TUESDAY... THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST TUESDAY. * LOW TEMPERATURES: 32 TO 36 DEGREES IN THE FROST ADVISORY AREA. * TIMING: TEMPERATURES WILL DROP INTO THE FROST RANGE BEGINNING AROUND MIDNIGHT AND THEN WILL CONTINUE TO FALL THROUGH THE HOUR OF SUNRISE. TEMPERATURES ARE EXPECTED TO INCREASE TO ABOVE 36 DEGREES BY 9 AM PST. * TEMPERATURE INVERSION: A FAIRLY STRONG TEMPERATURE INVERSION WILL EXIST ABOVE THE SURFACE OF VALLEYS. * LOCATIONS INCLUDE: REEDSPORT...COQUILLE...POWERS AND MYRTLE POINT. * IMPACTS: FROST WILL HARM OR KILL SENSITIVE VEGETATION LEFT UNPROTECTED DURING THIS TIME PERIOD. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ BTL
2 follow-up statements
739 WWUS76 KMFR 172306 NPWMFR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 306 PM PST MON NOV 17 2014 ...FROST AND FREEZING CONDITIONS AGAIN TUESDAY MORNING... .A DRY AIR MASS IN PLACE WILL RESULT IN COLD TEMPERATURES AGAIN TONIGHT INTO TUESDAY MORNING. FROST AND FREEZING CONDITIONS ARE EXPECTED AT MANY LOCATIONS. IT WILL NOT BE AS COLD AS IT WAS THIS MORNING. ORZ023-181700- /O.CON.KMFR.FZ.W.0021.141118T0800Z-141118T1700Z/ /O.CON.KMFR.FR.Y.0021.141118T0800Z-141118T1700Z/ CENTRAL DOUGLAS COUNTY- INCLUDING THE CITIES OF...DRAIN...ELKTON...ROSEBURG...SUTHERLIN... GREEN...MYRTLE CREEK...CANYONVILLE 306 PM PST MON NOV 17 2014 ...FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST TUESDAY... ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST TUESDAY... A FREEZE WARNING REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST TUESDAY. A FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST TUESDAY. THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A FREEZE WARNING...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST TUESDAY. A FROST ADVISORY HAS ALSO BEEN ISSUED. THIS FROST ADVISORY IS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST TUESDAY. * LOW TEMPERATURES: 28 TO 32 DEGREES IN THE FREEZE WARNING AREA. 33 TO 36 DEGREES IN THE FROST ADVISORY AREA. * TIMING: TEMPERATURES WILL DROP INTO THE FROST RANGE BEGINNING AROUND MIDNIGHT AND THEN WILL CONTINUE TO FALL THROUGH THE HOUR OF SUNRISE. TEMPERATURES ARE EXPECTED TO INCREASE TO ABOVE 36 DEGREES BY 9 AM PST. * TEMPERATURE INVERSION: A FAIRLY STRONG TEMPERATURE INVERSION WILL EXIST ABOVE THE SURFACE OF VALLEYS. * LOCATIONS IN THE FREEZE WARNING INCLUDE: DRAIN...ELKTON... SUTHERLIN...SCOTTSBURG...CANYONVILLE AND CAMAS VALLEY. * LOCATIONS IN THE FROST ADVISORY INCLUDE: UMPQUA...ROSEBURG GREEN...WINCHESTER...MYRTLE CREEK...GREEN...RIDDLE AND TRI- CITY. * IMPACTS: FROST AND FREEZING TEMPERATURES WILL HARM OR KILL SENSITIVE VEGETATION LEFT UNPROTECTED DURING THIS TIME PERIOD. * NOTE: THESE WILL BE THE LAST FROST AND FREEZE PRODUCTS ISSUED UNTIL SPRING OF 2015 FOR THIS AREA. * VIEW THE HAZARD AREA IN DETAIL AT HTTP://GO.USA.GOV/ZYV5 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. && $$ ORZ021-181700- /O.CON.KMFR.FR.Y.0021.141118T0800Z-141118T1700Z/ SOUTH CENTRAL OREGON COAST- INCLUDING THE CITIES OF...REEDSPORT...COQUILLE 306 PM PST MON NOV 17 2014 ...FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST TUESDAY... A FROST ADVISORY REMAINS IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM PST TUESDAY. * LOW TEMPERATURES: 32 TO 36 DEGREES IN THE FROST ADVISORY AREA. * TIMING: TEMPERATURES WILL DROP INTO THE FROST RANGE BEGINNING AROUND MIDNIGHT AND THEN WILL CONTINUE TO FALL THROUGH THE HOUR OF SUNRISE. TEMPERATURES ARE EXPECTED TO INCREASE TO ABOVE 36 DEGREES BY 9 AM PST. * TEMPERATURE INVERSION: A FAIRLY STRONG TEMPERATURE INVERSION WILL EXIST ABOVE THE SURFACE OF VALLEYS. * LOCATIONS INCLUDE: REEDSPORT...COQUILLE...POWERS AND MYRTLE POINT. * IMPACTS: FROST WILL HARM OR KILL SENSITIVE VEGETATION LEFT UNPROTECTED DURING THIS TIME PERIOD. * VIEW THE HAZARD AREA IN DETAIL AT HTTP://GO.USA.GOV/ZYV5 * NOTE: FUTURE FROST AND FREEZE PRODUCTS WILL ONLY BE ISSUED FOR AREAS WITHIN 10 MILES OF THE COAST UNTIL THE SPRING OF 2015. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ BTL
784 WWUS76 KMFR 181649 NPWMFR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 849 AM PST TUE NOV 18 2014 ORZ023-181800- /O.EXP.KMFR.FZ.W.0021.000000T0000Z-141118T1700Z/ /O.EXP.KMFR.FR.Y.0021.000000T0000Z-141118T1700Z/ CENTRAL DOUGLAS COUNTY- INCLUDING THE CITIES OF...DRAIN...ELKTON...ROSEBURG...SUTHERLIN... GREEN...MYRTLE CREEK...CANYONVILLE 849 AM PST TUE NOV 18 2014 ...FREEZE WARNING WILL EXPIRE AT 9 AM PST THIS MORNING... ...FROST ADVISORY WILL EXPIRE AT 9 AM PST THIS MORNING... THE FREEZE WARNING WILL EXPIRE AT 9 AM PST THIS MORNING. THE FROST ADVISORY WILL EXPIRE AT 9 AM PST THIS MORNING. * NOTE: THESE WILL BE THE LAST FROST AND FREEZE PRODUCTS ISSUED UNTIL SPRING OF 2015 FOR THIS AREA. $$ ORZ021-181800- /O.EXP.KMFR.FR.Y.0021.000000T0000Z-141118T1700Z/ SOUTH CENTRAL OREGON COAST- INCLUDING THE CITIES OF...REEDSPORT...COQUILLE 849 AM PST TUE NOV 18 2014 ...FROST ADVISORY WILL EXPIRE AT 9 AM PST THIS MORNING... THE FROST ADVISORY WILL EXPIRE AT 9 AM PST THIS MORNING. $$ STOCKTON
The office that day
Everything else NWS Medford, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 17, 9:25 AM PST | Freeze Warning | MFR | Coos, Douglas | 24 hr |
| Nov 17, 2:55 PM PST | Gale Watch | MFR | 14 hr | |
| Nov 17, 2:55 PM PST | Hazardous Seas Watch | MFR | 14 hr |
Nearby
Frost Advisories in Oregon, 2014Every frost advisory in 2014
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.