Alert archive / California / Freeze Warnings in 2012
Freeze Warning 21, NWS Medford, OR
NWS Medford, OR issued this freeze warning at Oct 4, 2012, 2:32 PM PDT for Klamath County, Oregon; Modoc County, Siskiyou County, California. It took effect at Oct 5, 2012, 3:00 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
- Oct 4, 2012, 2:32 PM PDT (21:32 UTC)
- In effect from
- Oct 5, 2012, 3:00 AM PDT
- Expired
- Oct 5, 2012, 9:00 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 21:31 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, 9.5 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
- 3362 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 0 m²/s²
- 0-3 km storm-relative helicity
- 100 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
757 WWUS76 KMFR 042132 NPWMFR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 232 PM PDT THU OCT 4 2012 ...FREEZING TEMPERATURES EXPECTED EAST OF THE CASCADES WITH AREAS OF FROST ON THE WEST SIDE ON FRIDAY MORNING... .DRY AIR...CLEAR SKIES...AND LIGHT WINDS WILL LEAD TO A FREEZE ACROSS MUCH OF THE EAST SIDE FRIDAY MORNING WITH TEMPERATURES LIKELY A BIT COOLER THAN WERE OBSERVED THIS MORNING. FROST IS EXPECTED IN AND NEAR THE ILLINOIS VALLEY AGAIN ON FRIDAY MORNING, AS WELL PORTIONS OF THE SMALLER VALLEYS OF JACKSON COUNTY. ORZ023-042245- /O.CAN.KMFR.FR.Y.0041.121005T1000Z-121005T1500Z/ CENTRAL DOUGLAS COUNTY- INCLUDING THE CITIES OF...DRAIN...SUTHERLIN...GREEN 232 PM PDT THU OCT 4 2012 ...FROST ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MEDFORD HAS CANCELLED THE FROST ADVISORY. LOWS WILL FALL TO BETWEEN 37 AND 42 ACROSS MOST VALLEY LOCATIONS BY FRIDAY MORNING. THIS IS JUST SHORT OF TEMPERATURES REQUIRED TO PRODUCE FROST. $$ CAZ084-ORZ029-051600- /O.UPG.KMFR.FZ.A.0017.121005T1000Z-121005T1500Z/ /O.NEW.KMFR.FZ.W.0021.121005T1000Z-121005T1600Z/ NORTHEAST SISKIYOU AND NORTHWEST MODOC COUNTIES-KLAMATH BASIN- INCLUDING THE CITIES OF...TULELAKE...DORRIS 232 PM PDT THU OCT 4 2012 ...FREEZE WARNING IN EFFECT FROM 3 AM TO 9 AM PDT FRIDAY... THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A FREEZE WARNING...WHICH IS IN EFFECT FROM 3 AM TO 9 AM PDT FRIDAY. * TEMPERATURES: 27 TO 32 DEGREES. * TEMPERATURE INVERSION: A FAIRLY STRONG INVERSION IS EXPECTED FRIDAY MORNING WITH ABOVE FREEZING TEMPERATURES EXPECTED ABOVE THE SURFACE. * LOCATIONS INCLUDE: KLAMATH FALLS...ALTAMONT...BONANZA... AND MERRILL IN OREGON. TULELAKE AND DORRIS IN CALIFORNIA. * IMPACTS: SENSITIVE VEGETATION COULD BE DAMAGED OR KILLED IF LEFT UNPROTECTED. * FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=MFR PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ CAZ082-051600- /O.UPG.KMFR.FZ.A.0017.121005T1000Z-121005T1500Z/ /O.EXB.KMFR.FR.Y.0041.121005T1000Z-121005T1600Z/ SOUTH CENTRAL SISKIYOU COUNTY- INCLUDING THE CITY OF...MCCLOUD 232 PM PDT THU OCT 4 2012 ...FROST ADVISORY IN EFFECT FROM 3 AM TO 9 AM PDT FRIDAY... THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 3 AM TO 9 AM PDT FRIDAY. THE FREEZE WATCH IS NO LONGER IN EFFECT. * TEMPERATURES: 32 TO 37 DEGREES. * TEMPERATURE INVERSION: A FAIRLY STRONG INVERSION IS EXPECTED FRIDAY MORNING WITH ABOVE FREEZING TEMPERATURES EXPECTED ABOVE THE SURFACE. * LOCATIONS INCLUDE: AREAS IN AND AROUND MC CLOUD. * IMPACTS: SENSITIVE VEGETATION COULD BE DAMAGED OR KILLED IF LEFT UNPROTECTED. * 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. && $$ ORZ024-026-051600- /O.EXT.KMFR.FR.Y.0041.121005T1000Z-121005T1600Z/ EASTERN CURRY COUNTY AND JOSEPHINE COUNTY-JACKSON COUNTY- INCLUDING THE CITY OF...CAVE JUNCTION 232 PM PDT THU OCT 4 2012 ...FROST ADVISORY NOW IN EFFECT FROM 3 AM TO 9 AM PDT FRIDAY... THE FROST ADVISORY IS NOW IN EFFECT FROM 3 AM TO 9 AM PDT FRIDAY. * TEMPERATURES: 32 TO 36 DEGREES. * TEMPERATURE INVERSION: A FAIRLY STRONG INVERSION IS EXPECTED FRIDAY MORNING WITH ABOVE FREEZING TEMPERATURES EXPECTED ABOVE THE SURFACE. * LOCATIONS INCLUDE: BUTTE FALLS...CAVE JUNCTION...WILLIAMS... AND OBRIEN. * IMPACTS: SENSITIVE VEGETATION COULD BE DAMAGED OR KILLED IF NOT PROPERLY PROTECTED. * FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=MFR PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ BTL
2 follow-up statements
235 WWUS76 KMFR 050945 NPWMFR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 245 AM PDT FRI OCT 5 2012 ...FREEZING TEMPERATURES EXPECTED EAST OF THE CASCADES WITH AREAS OF FROST ON THE WEST SIDE ON THIS MORNING AND AGAIN SATURDAY MORNING... .DRY AIR...CLEAR SKIES...AND LIGHT WINDS WILL LEAD TO A FREEZE ACROSS MUCH OF THE EAST SIDE THIS MORNING. FROST IS EXPECTED IN THE ILLINOIS VALLEY AGAIN ON FRIDAY MORNING...AS WELL PORTIONS OF THE APPLEGATE AND SMALLER VALLEYS OF JACKSON COUNTY. EXPECT FROST AND FREEZE TO OCCUR AGAIN FRIDAY NIGHT AND SATURDAY MORNING. CAZ084-ORZ029-052200- /O.NEW.KMFR.FZ.W.0022.121006T1000Z-121006T1600Z/ /O.CON.KMFR.FZ.W.0021.121005T1000Z-121005T1600Z/ NORTHEAST SISKIYOU AND NORTHWEST MODOC COUNTIES-KLAMATH BASIN- INCLUDING THE CITIES OF...TULELAKE...DORRIS 245 AM PDT FRI OCT 5 2012 ...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... ...FREEZE WARNING HAS BEEN ISSUED FROM 3 AM TO 9 AM PDT SATURDAY... THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A FREEZE WARNING...WHICH IS IN EFFECT FROM 3 AM TO 9 AM PDT SATURDAY. A FREEZE WARNING ALSO REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING. * TEMPERATURES: 27 TO 32 DEGREES THIS MORNING AND AGAIN SATURDAY MORNING. * TEMPERATURE INVERSION: A FAIRLY STRONG INVERSION IS EXPECTED THIS MORNING WITH ABOVE FREEZING TEMPERATURES EXPECTED ABOVE THE SURFACE. INVERSION IS EXPECTED TO DEVELOP AGAIN FRIDAY NIGHT. * LOCATIONS INCLUDE: KLAMATH FALLS...ALTAMONT...BONANZA... AND MERRILL IN OREGON. TULELAKE AND DORRIS IN CALIFORNIA. * IMPACTS: SENSITIVE VEGETATION COULD BE DAMAGED OR KILLED IF LEFT UNPROTECTED. * FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=MFR PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ CAZ082-052200- /O.NEW.KMFR.FR.Y.0042.121006T1000Z-121006T1500Z/ /O.CON.KMFR.FR.Y.0041.121005T1000Z-121005T1600Z/ SOUTH CENTRAL SISKIYOU COUNTY- INCLUDING THE CITY OF...MCCLOUD 245 AM PDT FRI OCT 5 2012 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... ...FROST ADVISORY HAS BEEN ISSUED FROM 3 AM TO 8 AM PDT SATURDAY... THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 3 AM TO 8 AM PDT SATURDAY. A FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING. * TEMPERATURES: 32 TO 37 DEGREES THIS MORNING AND AGAIN SATURDAY MORNING. * TEMPERATURE INVERSION: A FAIRLY STRONG INVERSION IS EXPECTED THIS MORNING WITH ABOVE FREEZING TEMPERATURES EXPECTED ABOVE THE SURFACE. INVERSION IS EXPECTED TO DEVELOP AGAIN FRIDAY NIGHT. * LOCATIONS INCLUDE: AREAS IN AND AROUND MCCLOUD. * IMPACTS: SENSITIVE VEGETATION COULD BE DAMAGED OR KILLED IF LEFT UNPROTECTED. * FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=MFR PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ ORZ024-026-052200- /O.NEW.KMFR.FR.Y.0042.121006T1000Z-121006T1500Z/ /O.CON.KMFR.FR.Y.0041.121005T1000Z-121005T1600Z/ EASTERN CURRY COUNTY AND JOSEPHINE COUNTY-JACKSON COUNTY- INCLUDING THE CITY OF...CAVE JUNCTION 245 AM PDT FRI OCT 5 2012 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING... ...FROST ADVISORY HAS BEEN ISSUED FROM 3 AM TO 8 AM PDT SATURDAY... THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 3 AM TO 8 AM PDT SATURDAY. A FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM PDT THIS MORNING. * TEMPERATURES: 32 TO 36 DEGREES THIS MORNING AND AGAIN SATURDAY MORNING. * TEMPERATURE INVERSION: A FAIRLY STRONG INVERSION IS EXPECTED THIS MORNING WITH ABOVE FREEZING TEMPERATURES EXPECTED ABOVE THE SURFACE. INVERSION IS EXPECTED TO DEVELOP AGAIN FRIDAY NIGHT. * LOCATIONS INCLUDE: BUTTE FALLS...CAVE JUNCTION...WILLIAMS... AND OBRIEN. * 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. && $$ FB
196 WWUS76 KMFR 051552 NPWMFR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 852 AM PDT FRI OCT 5 2012 ...FREEZING TEMPERATURES EXPECTED EAST OF THE CASCADES WITH AREAS OF FROST ON THE WEST SIDE AGAIN SATURDAY MORNING... .DRY AIR...CLEAR SKIES...AND LIGHT WINDS WILL LEAD TO ANOTHER FROST AND FREEZE OVER PORTIONS OF THE AREA SATURDAY MORNING. CAZ084-ORZ029-060000- /O.EXP.KMFR.FZ.W.0021.000000T0000Z-121005T1600Z/ /O.CON.KMFR.FZ.W.0022.121006T1000Z-121006T1600Z/ NORTHEAST SISKIYOU AND NORTHWEST MODOC COUNTIES-KLAMATH BASIN- INCLUDING THE CITIES OF...TULELAKE...DORRIS 852 AM PDT FRI OCT 5 2012 ...FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 9 AM PDT SATURDAY... ...FREEZE WARNING WILL EXPIRE AT 9 AM PDT THIS MORNING... THE FREEZE WARNING WILL EXPIRE AT 9 AM PDT THIS MORNING. A FREEZE WARNING REMAINS IN EFFECT FROM 3 AM TO 9 AM PDT SATURDAY. * TEMPERATURES: 27 TO 32 DEGREES THIS MORNING AND AGAIN SATURDAY MORNING. * TEMPERATURE INVERSION: A FAIRLY STRONG INVERSION IS EXPECTED THIS MORNING WITH ABOVE FREEZING TEMPERATURES EXPECTED ABOVE THE SURFACE. AN INVERSION IS EXPECTED TO DEVELOP AGAIN TONIGHT. * LOCATIONS INCLUDE: KLAMATH FALLS...ALTAMONT...BONANZA... AND MERRILL IN OREGON. TULELAKE AND DORRIS IN CALIFORNIA. * IMPACTS: SENSITIVE VEGETATION COULD BE DAMAGED OR KILLED IF LEFT UNPROTECTED. * FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=MFR (ALL LOWER CASE) PRECAUTIONARY/PREPAREDNESS ACTIONS... A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ CAZ082-060000- /O.EXP.KMFR.FR.Y.0041.000000T0000Z-121005T1600Z/ /O.CON.KMFR.FR.Y.0042.121006T1000Z-121006T1500Z/ SOUTH CENTRAL SISKIYOU COUNTY- INCLUDING THE CITY OF...MCCLOUD 852 AM PDT FRI OCT 5 2012 ...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 8 AM PDT SATURDAY... ...FROST ADVISORY WILL EXPIRE AT 9 AM PDT THIS MORNING... THE FROST ADVISORY WILL EXPIRE AT 9 AM PDT THIS MORNING. A FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 8 AM PDT SATURDAY. * TEMPERATURES: 32 TO 37 DEGREES THIS MORNING AND AGAIN SATURDAY MORNING. * TEMPERATURE INVERSION: A FAIRLY STRONG INVERSION IS EXPECTED THIS MORNING WITH ABOVE FREEZING TEMPERATURES EXPECTED ABOVE THE SURFACE. INVERSION IS EXPECTED TO DEVELOP AGAIN FRIDAY NIGHT. * LOCATIONS INCLUDE: AREAS IN AND AROUND MCCLOUD. * IMPACTS: SENSITIVE VEGETATION COULD BE DAMAGED OR KILLED IF LEFT UNPROTECTED. * 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. && $$ ORZ024-026-060000- /O.EXP.KMFR.FR.Y.0041.000000T0000Z-121005T1600Z/ /O.CON.KMFR.FR.Y.0042.121006T1000Z-121006T1500Z/ EASTERN CURRY COUNTY AND JOSEPHINE COUNTY-JACKSON COUNTY- INCLUDING THE CITY OF...CAVE JUNCTION 852 AM PDT FRI OCT 5 2012 ...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 8 AM PDT SATURDAY... ...FROST ADVISORY WILL EXPIRE AT 9 AM PDT THIS MORNING... THE FROST ADVISORY WILL EXPIRE AT 9 AM PDT THIS MORNING. A FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 8 AM PDT SATURDAY. * TEMPERATURES: 32 TO 36 DEGREES THIS MORNING AND AGAIN SATURDAY MORNING. * TEMPERATURE INVERSION: A FAIRLY STRONG INVERSION IS EXPECTED THIS MORNING WITH ABOVE FREEZING TEMPERATURES EXPECTED ABOVE THE SURFACE. INVERSION IS EXPECTED TO DEVELOP AGAIN FRIDAY NIGHT. * LOCATIONS INCLUDE: BUTTE FALLS...CAVE JUNCTION...WILLIAMS... AND OBRIEN. * IMPACTS: SENSITIVE VEGETATION COULD BE DAMAGED OR KILLED IF NOT PROPERLY PROTECTED. * FOR A DETAILED VIEW OF THE HAZARD AREA...VISIT HTTP://WWW.WRH.NOAA.GOV/WRH/WHV/?WFO=MFR (ALL LOWER CASE) PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ BTL/FB
The office that day
Everything else NWS Medford, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 3, 9:05 PM PDT | Small Craft Advisory for Winds | MFR | 26 hr | |
| Oct 3, 10:51 PM PDT | Small Craft Advisory for Hazardous Seas | MFR | 24 hr | |
| Oct 4, 2:32 AM PDT | Frost Advisory | MFR | Coos, Curry, Douglas, Jackson, Josephine | 30 hr |
| Oct 4, 2:32 AM PDT | Freeze Watch | MFR | Klamath | 12 hr |
Nearby
Freeze Warnings in California, 2012Freeze Warnings in Oregon, 2012Every freeze warning 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.