Alert archive / California / Frost Advisories in 2012
Frost Advisory 21, NWS Medford, OR
NWS Medford, OR issued this frost advisory at Jun 4, 2012, 3:04 PM PDT for Modoc County, Siskiyou County, California; Klamath County, Lake County, Oregon. It took effect at Jun 5, 2012, 3:00 AM PDT. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Jun 4, 2012, 3:04 PM PDT (22:04 UTC)
- In effect from
- Jun 5, 2012, 3:00 AM PDT
- Expired
- Jun 5, 2012, 7:00 AM PDT
- In force
- 4 hr
- Issued by
- NWS Medford, OR
Counties Modoc County, CA, Siskiyou County, CA, Klamath County, OR, Lake County, OR
The radar
The Medford radar (KMAX), 115 km from the middle of the area, began a volume at 22:06 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, 10.1 hours before the alert went out and 123 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
- 43 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 681 m above ground
- 0-6 km bulk shear
- 77 kt
- 0-1 km storm-relative helicity
- 105 m²/s²
- 0-3 km storm-relative helicity
- 156 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
057 WWUS76 KMFR 042204 NPWMFR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 304 PM PDT MON JUN 4 2012 CAZ085-ORZ030-031-050615- /O.NEW.KMFR.FR.Y.0021.120605T1000Z-120605T1400Z/ /O.NEW.KMFR.FZ.A.0008.120606T1000Z-120606T1400Z/ /O.CON.KMFR.WI.Y.0029.000000T0000Z-120605T0300Z/ MODOC COUNTY- NORTHERN AND EASTERN KLAMATH COUNTY AND WESTERN LAKE COUNTY- CENTRAL AND EASTERN LAKE COUNTY- INCLUDING THE CITIES OF...BEATTY...BLY...CHEMULT...CRESCENT... GILCHRIST...SPRAGUE RIVER 304 PM PDT MON JUN 4 2012 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... ...FROST ADVISORY IN EFFECT FROM 3 AM TO 7 AM PDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING... THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 3 AM TO 7 AM PDT TUESDAY. A FREEZE WATCH HAS ALSO BEEN ISSUED. THIS FREEZE WATCH IS IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING. A WIND ADVISORY REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING. * WINDS...SOUTHWEST WINDS OF 25 TO 35 MPH WITH GUSTS IN EXCESS OF 45 MPH. * TIMING...STRONGEST WINDS WILL BE THIS AFTERNOON. * LOCATIONS INCLUDE: ALTURAS...LAKEVIEW...THE SUMMER LAKE AND CHRISTMAS VALLEY AREAS. * IMPACTS...HIGH PROFILE VEHICLES...ESPECIALLY ON EAST WEST ROADS...WILL EXPERIENCE DIFFICULT DRIVING CONDITIONS. * TEMPERATURES...33 TO 36 DEGREES EARLY TUESDAY MORNING WITH POSSIBLE FREEZING TEMPERATURES WEDNESDAY MORNING. * TEMPERATURE INVERSION...NO INVERSION WILL BE PRESENT TUESDAY MORNING AS COLD AIR WILL EXTEND FROM THE SURFACE TO THE UPPER LEVELS. * TIMING OF COLDEST TEMPERATURES...3 AM TO 7 AM. * LOCATIONS INCLUDE: TULELAKE...DORRIS...KLAMATH FALLS...CHILOQUIN. * IMPACTS...SENSITIVE VEGETATION COULD BE DAMAGED OR KILLED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED WITH HIGHER GUSTS POSSIBLE. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. 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. && $$ CAZ084-ORZ029-050615- /O.NEW.KMFR.FR.Y.0021.120605T1000Z-120605T1400Z/ /O.NEW.KMFR.FZ.A.0008.120606T1000Z-120606T1400Z/ NORTHEAST SISKIYOU AND NORTHWEST MODOC COUNTIES-KLAMATH BASIN- INCLUDING THE CITIES OF...TULELAKE...DORRIS 304 PM PDT MON JUN 4 2012 ...FROST ADVISORY IN EFFECT FROM 3 AM TO 7 AM PDT TUESDAY... ...FREEZE WATCH IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING... THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 3 AM TO 7 AM PDT TUESDAY. A FREEZE WATCH HAS ALSO BEEN ISSUED. THIS FREEZE WATCH IS IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING. * TEMPERATURES...33 TO 36 DEGREES EARLY TUESDAY MORNING WITH POSSIBLE FREEZING TEMPERATURES WEDNESDAY MORNING. * TEMPERATURE INVERSION...NO INVERSION WILL BE PRESENT TUESDAY MORNING AS COLD AIR WILL EXTEND FROM THE SURFACE TO THE UPPER LEVELS. * TIMING...3 AM TO 7 AM. * LOCATIONS INCLUDE: TULELAKE...DORRIS...KLAMATH FALLS...CHILOQUIN. * IMPACTS...SENSITIVE VEGETATION COULD BE DAMAGED OR KILLED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE. THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ SK
2 follow-up statements
095 WWUS76 KMFR 050259 NPWMFR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 759 PM PDT MON JUN 4 2012 CAZ085-ORZ030-031-051100- /O.EXP.KMFR.WI.Y.0029.000000T0000Z-120605T0300Z/ /O.CON.KMFR.FR.Y.0021.120605T1000Z-120605T1400Z/ /O.CON.KMFR.FZ.A.0008.120606T1000Z-120606T1400Z/ MODOC COUNTY- NORTHERN AND EASTERN KLAMATH COUNTY AND WESTERN LAKE COUNTY- CENTRAL AND EASTERN LAKE COUNTY- INCLUDING THE CITIES OF...BEATTY...BLY...CHEMULT...CRESCENT... GILCHRIST...SPRAGUE RIVER 759 PM PDT MON JUN 4 2012 ...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 7 AM PDT TUESDAY... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING... ...WIND ADVISORY WILL EXPIRE AT 8 PM PDT THIS EVENING... THE WIND ADVISORY WILL EXPIRE AT 8 PM PDT THIS EVENING. A FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 7 AM PDT TUESDAY. A FREEZE WATCH REMAINS IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING. * TEMPERATURES...33 TO 36 DEGREES EARLY TUESDAY MORNING WITH POSSIBLE FREEZING TEMPERATURES WEDNESDAY MORNING. * TEMPERATURE INVERSION...NO INVERSION WILL BE PRESENT TUESDAY MORNING AS COLD AIR WILL EXTEND FROM THE SURFACE TO THE UPPER LEVELS. * TIMING OF COLDEST TEMPERATURES...3 AM TO 7 AM. * LOCATIONS INCLUDE: ALTURAS...LAKEVIEW...SUMMER LAKE...CHRISTMAS VALLEY. * IMPACTS...SENSITIVE VEGETATION COULD BE DAMAGED OR KILLED. 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. && $$ CAZ084-ORZ029-051100- /O.CON.KMFR.FR.Y.0021.120605T1000Z-120605T1400Z/ /O.CON.KMFR.FZ.A.0008.120606T1000Z-120606T1400Z/ NORTHEAST SISKIYOU AND NORTHWEST MODOC COUNTIES-KLAMATH BASIN- INCLUDING THE CITIES OF...TULELAKE...DORRIS 759 PM PDT MON JUN 4 2012 ...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 7 AM PDT TUESDAY... ...FREEZE WATCH REMAINS IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING... A FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 7 AM PDT TUESDAY. A FREEZE WATCH REMAINS IN EFFECT FROM LATE TUESDAY NIGHT THROUGH WEDNESDAY MORNING. * TEMPERATURES...33 TO 36 DEGREES EARLY TUESDAY MORNING WITH POSSIBLE FREEZING TEMPERATURES WEDNESDAY MORNING. * TEMPERATURE INVERSION...NO INVERSION WILL BE PRESENT TUESDAY MORNING AS COLD AIR WILL EXTEND FROM THE SURFACE TO THE UPPER LEVELS. * TIMING...3 AM TO 7 AM. * LOCATIONS INCLUDE: TULELAKE...DORRIS...KLAMATH FALLS... CHILOQUIN. * IMPACTS...SENSITIVE VEGETATION COULD BE DAMAGED OR KILLED. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. A FREEZE WATCH MEANS SUB-FREEZING TEMPERATURES ARE POSSIBLE. THESE CONDITIONS COULD KILL CROPS AND OTHER SENSITIVE VEGETATION. && $$ STOCKTON
282 WWUS76 KMFR 050951 NPWMFR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 251 AM PDT TUE JUN 5 2012 CAZ084-085-ORZ029>031-052230- /O.UPG.KMFR.FZ.A.0008.120606T1000Z-120606T1400Z/ /O.NEW.KMFR.FZ.W.0012.120606T1000Z-120606T1400Z/ /O.CON.KMFR.FR.Y.0021.120605T1000Z-120605T1400Z/ NORTHEAST SISKIYOU AND NORTHWEST MODOC COUNTIES-MODOC COUNTY- KLAMATH BASIN- NORTHERN AND EASTERN KLAMATH COUNTY AND WESTERN LAKE COUNTY- CENTRAL AND EASTERN LAKE COUNTY- INCLUDING THE CITIES OF...TULELAKE...DORRIS...ALTURAS...BEATTY... BLY...CHEMULT...CRESCENT...GILCHRIST...SPRAGUE RIVER...LAKEVIEW 251 AM PDT TUE JUN 5 2012 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 7 AM PDT THIS MORNING... ...FREEZE WARNING IN EFFECT FROM 3 AM TO 7 AM PDT WEDNESDAY... THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A FREEZE WARNING...WHICH IS IN EFFECT FROM 3 AM TO 7 AM PDT WEDNESDAY. THE FREEZE WATCH IS NO LONGER IN EFFECT. A FROST ADVISORY REMAINS IN EFFECT UNTIL 7 AM PDT THIS MORNING. * TEMPERATURES...33 TO 36 DEGREES EARLY THIS MORNING. THEN... WEDNESDAY MORNING LOWS WILL DIP TO 25 TO 32 DEGREES. ISOLATED AREAS MAY DIP INTO THE LOWER 20S. * TEMPERATURE INVERSION...LITTLE OR NO INVERSION WILL BE PRESENT THIS MORNING AS COLD AIR EXTENDS FROM THE SURFACE TO THE UPPER LEVELS THE BOUNDARY LAYER MIXED. ON WEDNESDAY MORNING...AN INVERSION WILL BE PRESENT EXTENDING UP TO A FEW HUNDRED FEET. * TIMING OF COLDEST TEMPERATURES...3 AM TO 7 AM EACH MORNING. * LOCATIONS IN THE FROST ADVISORY THIS MORNING INCLUDE: BONANZA... SPRAGUE RIVER...LAKEVIEW...SUMMER LAKE...TULELAKE...CHILOQUIN... CHEMULT...AND CHRISTMAS VALLEY. * LOCATIONS IN THE FREEZE WARNING WEDNESDAY MORNING INCLUDE: KLAMATH FALLS...BONANZA...SPRAGUE RIVER...LAKEVIEW...SUMMER LAKE...CHILOQUIN...CHEMULT...CHRISTMAS VALLEY...TULELAKE... ALTURAS...ADIN. * IMPACTS...SENSITIVE VEGETATION COULD BE DAMAGED OR KILLED. 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. && $$ CAZ081-082-052230- /O.NEW.KMFR.FR.Y.0022.120606T1000Z-120606T1400Z/ CENTRAL SISKIYOU COUNTY-SOUTH CENTRAL SISKIYOU COUNTY- INCLUDING THE CITIES OF...WEED...MOUNT SHASTA...MCCLOUD 251 AM PDT TUE JUN 5 2012 ...FROST ADVISORY IN EFFECT FROM 3 AM TO 7 AM PDT WEDNESDAY... THE NATIONAL WEATHER SERVICE IN MEDFORD HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 3 AM TO 7 AM PDT WEDNESDAY. * TEMPERATURE...LOWS WILL DIP TO 32 TO 36 DEGREES. * TEMPERATURE INVERSION...A SURFACE TEMPERATURE INVERSION WILL BE PRESENT EXTENDING UP TO A FEW HUNDRED FEET. * LOCATIONS INCLUDE: WEED...MOUNT SHASTA...MCCLOUD. * IMPACTS...SENSITIVE VEGETATION COULD BE DAMAGED OR KILLED. A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ STAVISH
The office that day
Everything else NWS Medford, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 4, 3:04 PM PDT | Freeze Watch | MFR | Modoc, Siskiyou | 12 hr |
| Jun 4, 3:29 AM PDT | Small Craft Advisory for Winds | MFR | 17 hr | |
| Jun 4, 10:35 AM PDT | Special Marine Warning | MFR | 25 min | |
| Jun 4, 1:40 PM PDT | Special Weather Statement | MFR | Douglas | 35 min |
| Jun 4, 1:42 PM PDT | Severe Thunderstorm Warning | MFR | Jackson, Josephine | 23 min |
| Jun 4, 1:43 PM PDT | Severe Thunderstorm Warning | MFR | Douglas | 32 min |
| Jun 4, 1:52 PM PDT | Severe Thunderstorm Warning | MFR | Douglas | 23 min |
| Jun 4, 2:14 PM PDT | Severe Thunderstorm Warning | MFR | Douglas | 31 min |
| Jun 4, 2:42 PM PDT | Severe Thunderstorm Warning | MFR | Jackson | 33 min |
| Jun 4, 2:54 PM PDT | Areal Flood Advisory | MFR | Jackson | 4 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.