Alert archive / California / Frost Advisories in 2012
Frost Advisory 39, NWS Medford, OR
NWS Medford, OR issued this frost advisory at Oct 2, 2012, 3:26 AM PDT for Modoc County, Siskiyou County, California; Klamath County, Oregon. It took effect at Oct 3, 2012, 2:00 AM PDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Oct 2, 2012, 3:26 AM PDT (10:26 UTC)
- In effect from
- Oct 3, 2012, 2:00 AM PDT
- Expired
- Oct 3, 2012, 8:00 AM PDT
- In force
- 6 hr
- Issued by
- NWS Medford, OR
Counties Modoc County, CA, Siskiyou County, CA, Klamath County, OR
The radar
The Medford radar (KMAX), 90 km from the middle of the area, began a volume at 10:30 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 00:00Z, 10.4 hours before the alert went out and 106 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
- 4293 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- -29 m²/s²
- 0-3 km storm-relative helicity
- -3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
381 WWUS76 KMFR 021026 NPWMFR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 326 AM PDT TUE OCT 2 2012 ...FROST EXPECTED IN THE KLAMATH AND TULELAKE BASINS LATE TONIGHT AND WEDNESDAY MORNING... .A DRY COLD FRONT WILL BRING A MUCH COLDER AIRMASS TO EASTERN OREGON AND NORTHERN CALIFORNIA TONIGHT AND WEDNESDAY MORNING. WITH LOW TEMPERATURES IN THE LOW TO MID 30S...FROST WILL BE POSSIBLE IN THE REMAINING GROWING AREAS OF THE LOWER KLAMATH AND TULELAKE BASINS. TEMPERATURES MAY BRIEFLY REACH FREEZING AROUND DAWN. CAZ084-ORZ029-022215- /O.UPG.KMFR.FZ.A.0015.121003T0900Z-121003T1500Z/ /O.NEW.KMFR.FR.Y.0039.121003T0900Z-121003T1500Z/ NORTHEAST SISKIYOU AND NORTHWEST MODOC COUNTIES-KLAMATH BASIN- INCLUDING THE CITIES OF...TULELAKE...DORRIS...ALTAMONT... KLAMATH FALLS 326 AM PDT TUE OCT 2 2012 ...FROST ADVISORY IN EFFECT FROM 2 AM TO 8 AM PDT WEDNESDAY... THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 2 AM TO 8 AM PDT WEDNESDAY. THE FREEZE WATCH IS NO LONGER IN EFFECT. * TEMPERATURES: 33 TO 36 DEGREES...EXCEPT BRIEFLY AT OR BELOW FREEZING AROUND DAWN. * TEMPERATURE INVERSION: LITTLE TO NO INVERSION IS EXPECTED. * LOCATIONS INCLUDE: ALTAMONT...KLAMATH FALLS...TULELAKE... DORRIS. * IMPACTS: SENSITIVE VEGETATION COULD BE DAMAGED OR KILLED IF NOT PROPERLY PROTECTED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$
4 follow-up statements
103 WWUS76 KMFR 021318 NPWMFR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 618 AM PDT TUE OCT 2 2012 ...FROST EXPECTED IN THE KLAMATH AND TULELAKE BASINS LATE TONIGHT INTO WEDNESDAY MORNING... .A DRY COLD FRONT WILL BRING A MUCH COLDER AIR MASS TO EASTERN OREGON AND NORTHERN CALIFORNIA LATE TONIGHT INTO WEDNESDAY MORNING. WITH LOW TEMPERATURES IN THE LOW TO MID 30S. FROST IS POSSIBLE IN THE REMAINING GROWING AREAS OF THE LOWER KLAMATH AND TULELAKE BASINS. TEMPERATURES MAY BRIEFLY REACH FREEZING AROUND DAWN. CAZ084-ORZ029-022230- /O.CON.KMFR.FR.Y.0039.121003T0900Z-121003T1500Z/ NORTHEAST SISKIYOU AND NORTHWEST MODOC COUNTIES-KLAMATH BASIN- INCLUDING THE CITIES OF...TULELAKE...DORRIS...ALTAMONT... KLAMATH FALLS 618 AM PDT TUE OCT 2 2012 ...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 8 AM PDT WEDNESDAY... A FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 8 AM PDT WEDNESDAY. * TEMPERATURES: 33 TO 36 DEGREES...EXCEPT BRIEFLY AT OR BELOW FREEZING AROUND DAWN. * TEMPERATURE INVERSION: LITTLE TO NO INVERSION IS EXPECTED. * LOCATIONS INCLUDE: ALTAMONT...KLAMATH FALLS...TULELAKE... DORRIS. * IMPACTS: SENSITIVE VEGETATION COULD BE DAMAGED OR KILLED IF NOT PROPERLY PROTECTED. * FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=MFR (ALL LOWER CASE) PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$
832 WWUS76 KMFR 022019 NPWMFR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 119 PM PDT TUE OCT 2 2012 ...FROST EXPECTED IN THE KLAMATH AND TULELAKE BASINS LATE TONIGHT INTO WEDNESDAY MORNING... .A DRY COLD FRONT WILL BRING A MUCH COLDER AIR MASS TO EASTERN OREGON AND NORTHERN CALIFORNIA LATE TONIGHT INTO WEDNESDAY MORNING. WITH LOW TEMPERATURES IN THE LOW TO MID 30S. FROST IS POSSIBLE IN THE REMAINING GROWING AREAS OF THE LOWER KLAMATH AND TULELAKE BASINS. TEMPERATURES MAY BRIEFLY REACH FREEZING AROUND DAWN. CAZ084-ORZ029-031030- /O.CON.KMFR.FR.Y.0039.121003T0900Z-121003T1500Z/ NORTHEAST SISKIYOU AND NORTHWEST MODOC COUNTIES-KLAMATH BASIN- INCLUDING THE CITIES OF...TULELAKE...DORRIS...ALTAMONT... KLAMATH FALLS 119 PM PDT TUE OCT 2 2012 ...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 8 AM PDT WEDNESDAY... A FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 8 AM PDT WEDNESDAY. * TEMPERATURES: 33 TO 36 DEGREES...EXCEPT BRIEFLY AT OR BELOW FREEZING AROUND DAWN. * TEMPERATURE INVERSION: LITTLE TO NO INVERSION IS EXPECTED. * LOCATIONS INCLUDE: ALTAMONT...KLAMATH FALLS...TULELAKE... DORRIS. * IMPACTS: SENSITIVE VEGETATION COULD BE DAMAGED OR KILLED IF NOT PROPERLY PROTECTED. * FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=MFR PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$
277 WWUS76 KMFR 030935 NPWMFR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 235 AM PDT WED OCT 3 2012 ...FROST IN THE KLAMATH AND TULELAKE BASINS THIS MORNING... ...COLDER WITH SUB FREEZING TEMPERATURES TONIGHT INTO THURSDAY MORNING... .COLDER AIR WILL CONTINUE TO MOVE ACROSS THE AREA FROM THE NORTH TODAY. THIS WILL RESULT IN AREAS OF FROST IN THE REMAINING GROWING AREAS OF THE LOWER KLAMATH AND TULELAKE BASINS THIS MORNING. AS THE AIRMASS SETTLES IN TONIGHT AND SKIES REMAIN CLEAR...IT WILL COOL FURTHER WITH TEMPERATURES DROPPING BELOW FREEZING OVER A SLIGHTLY LARGER AREA TONIGHT INTO THURSDAY MORNING. CAZ084-ORZ029-031500- /O.NEW.KMFR.FZ.A.0016.121004T1000Z-121004T1500Z/ /O.CON.KMFR.FR.Y.0039.000000T0000Z-121003T1500Z/ NORTHEAST SISKIYOU AND NORTHWEST MODOC COUNTIES-KLAMATH BASIN- INCLUDING THE CITIES OF...TULELAKE...DORRIS...ALTAMONT... KLAMATH FALLS 235 AM PDT WED OCT 3 2012 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM PDT THIS MORNING... ...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY MORNING... THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A FREEZE WATCH...WHICH IS IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY MORNING. A FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM PDT THIS MORNING. * TEMPERATURES: 33 TO 36 DEGREES THIS MORNING. COLDER TONIGHT AND THURSDAY MORNING WITH LOW TEMPERATURES OF 28 TO 32 DEGREES. * TEMPERATURE INVERSION: LITTLE TO NO INVERSION IS EXPECTED THIS MORNING. A WEAK TO MODERATE INVERSION IS POSSIBLE TONIGHT AND THURSDAY MORNING. * LOCATIONS INCLUDE: ALTAMONT...KLAMATH FALLS...TULELAKE... DORRIS. * IMPACTS: SENSITIVE VEGETATION COULD BE DAMAGED OR KILLED IF NOT PROPERLY PROTECTED. * FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=MFR PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE. THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ CAZ082-031500- /O.NEW.KMFR.FZ.A.0016.121004T1000Z-121004T1500Z/ SOUTH CENTRAL SISKIYOU COUNTY- 235 AM PDT WED OCT 3 2012 ...FREEZE WATCH IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY MORNING... THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A FREEZE WATCH...WHICH IS IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY MORNING. * TEMPERATURES: 28 TO 32 DEGREES. * TEMPERATURE INVERSION: A WEAK TO MODERATE INVERSION IS POSSIBLE. * LOCATIONS INCLUDE: MAINLY RURAL AREAS EAST OF MCCLOUD. * IMPACTS: SENSITIVE VEGETATION COULD BE DAMAGED OR KILLED IF NOT PROPERLY PROTECTED. * FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=MFR PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE. THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ WRIGHT
381 WWUS76 KMFR 031516 NPWMFR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 816 AM PDT WED OCT 3 2012 ...FROST IN THE KLAMATH AND TULELAKE BASINS THIS MORNING... ... COLDER WITH SUB FREEZING TEMPERATURES TONIGHT INTO THURSDAY MORNING... .COLDER AIR WILL CONTINUE TO MOVE ACROSS THE AREA FROM THE NORTH TODAY. THIS WILL RESULT IN AREAS OF FROST IN THE REMAINING GROWING AREAS OF THE LOWER KLAMATH AND TULELAKE BASINS THIS MORNING. AS THE AIRMASS SETTLES IN TONIGHT AND SKIES REMAIN CLEAR...IT WILL COOL FURTHER WITH TEMPERATURES DROPPING BELOW FREEZING OVER A SLIGHTLY LARGER AREA TONIGHT INTO THURSDAY MORNING. CAZ084-ORZ029-032330- /O.EXP.KMFR.FR.Y.0039.000000T0000Z-121003T1500Z/ /O.CON.KMFR.FZ.A.0016.121004T1000Z-121004T1500Z/ NORTHEAST SISKIYOU AND NORTHWEST MODOC COUNTIES-KLAMATH BASIN- INCLUDING THE CITIES OF...TULELAKE...DORRIS...ALTAMONT... KLAMATH FALLS 816 AM PDT WED OCT 3 2012 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY MORNING... ...FROST ADVISORY HAS EXPIRED... THE FROST ADVISORY IS NO LONGER IN EFFECT. A FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY MORNING. * TEMPERATURES: COLDER TONIGHT AND THURSDAY MORNING WITH LOW TEMPERATURES OF 28 TO 32 DEGREES. * TEMPERATURE INVERSION: A WEAK TO MODERATE INVERSION IS POSSIBLE TONIGHT AND THURSDAY MORNING. * LOCATIONS INCLUDE: ALTAMONT...KLAMATH FALLS...TULELAKE... DORRIS. * IMPACTS: SENSITIVE VEGETATION COULD BE DAMAGED OR KILLED IF NOT PROPERLY PROTECTED. * FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=MFR PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE. THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ CAZ082-032330- /O.CON.KMFR.FZ.A.0016.121004T1000Z-121004T1500Z/ SOUTH CENTRAL SISKIYOU COUNTY- 816 AM PDT WED OCT 3 2012 ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY MORNING... A FREEZE WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY MORNING. * TEMPERATURES: 28 TO 32 DEGREES. * TEMPERATURE INVERSION: A WEAK TO MODERATE INVERSION IS POSSIBLE. * LOCATIONS INCLUDE: MAINLY RURAL AREAS EAST OF MCCLOUD. * IMPACTS: SENSITIVE VEGETATION COULD BE DAMAGED OR KILLED IF NOT PROPERLY PROTECTED. * FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=MFR PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE. THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ STOCKTON
The office that day
Everything else NWS Medford, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 1, 7:22 PM PDT | Freeze Watch | MFR | Modoc, Siskiyou | 8 hr |
| Oct 2, 2:57 PM PDT | Fire Weather Watch | MFR | Douglas, Jackson, Josephine, Klamath, Lane | 17 hr |
| Oct 2, 2:57 PM PDT | Red Flag Warning | MFR | Coos, Curry, Jackson, Josephine | 17 hr |
Nearby
Frost Advisories in California, 2012Frost Advisories in Oregon, 2012Every frost advisory in 2012
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.