Alert archive / Oregon / Frost Advisories in 2008
Frost Advisory 21, NWS Medford, OR
NWS Medford, OR issued this frost advisory at Sep 2, 2008, 1:27 PM PDT for Klamath County, Lake County, Oregon; Modoc County, Siskiyou County, California. It took effect at Sep 3, 2008, 2:00 AM PDT. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Sep 2, 2008, 1:27 PM PDT (20:27 UTC)
- In effect from
- Sep 3, 2008, 2:00 AM PDT
- Expired
- Sep 3, 2008, 8:00 AM PDT
- In force
- 6 hr
- Issued by
- NWS Medford, OR
Counties Modoc County, CA, Siskiyou County, CA, Klamath County, OR, Lake County, OR
The nearest sounding before it
Medford/Jackson, OR (KMFR), launched 12:00Z, 8.5 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1418 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- -3 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS76 KMFR 022027 NPWMFR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 127 PM PDT TUE SEP 2 2008 CAZ084-085-ORZ029>031-030430- /O.NEW.KMFR.FR.Y.0021.080903T0900Z-080903T1500Z/ 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... ALTAMONT...KLAMATH FALLS...BEATTY...BLY...CHEMULT...CRESCENT... GILCHRIST...SPRAGUE RIVER...LAKEVIEW 127 PM PDT TUE SEP 2 2008 ...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. TEMPERATURES WILL DROP INTO THE LOWER TO MID 30S AGAIN TONIGHT. THIS WILL BE ENOUGH TO SUPPORT FROST FORMATION IN THE VALLEYS LATE TONIGHT INTO EARLY WEDNESDAY MORNING. A FEW SHELTERED LOCATIONS MAY SEE MORNING LOWS DIPPING INTO THE UPPER 20S WITH LOCALIZED FREEZE CONDITIONS. A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. $$ FB
2 follow-up statements
000 WWUS76 KMFR 030400 NPWMFR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 900 PM PDT TUE SEP 2 2008 CAZ084-085-ORZ029>031-031500- /O.CON.KMFR.FR.Y.0021.080903T0900Z-080903T1500Z/ NORTHEAST SISKIYOU AND NORTHWEST MODOC COUNTIES-MODOC COUNTY- KLAMATH BASIN- NORTHERN AND EASTERN KLAMATH COUNTY AND WESTERN LAKE COUNTY- CENTRAL AND EASTERN LAKE COUNTY- INCLUDING THE CITIES OF...TULELAKE...DORRIS...ALTURAS... ALTAMONT...KLAMATH FALLS...BEATTY...BLY...CHEMULT...CRESCENT... GILCHRIST...SPRAGUE RIVER...LAKEVIEW 900 PM PDT TUE SEP 2 2008 ...FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 8 AM PDT WEDNESDAY... A FROST ADVISORY REMAINS IN EFFECT FROM 2 AM TO 8 AM PDT WEDNESDAY. TEMPERATURES WILL DROP INTO THE LOWER TO MID 30S AGAIN TONIGHT. THIS WILL BE ENOUGH TO SUPPORT FROST FORMATION IN THE VALLEYS LATE TONIGHT INTO EARLY WEDNESDAY MORNING. A FEW SHELTERED LOCATIONS MAY SEE MORNING LOWS DIPPING INTO THE UPPER 20S WITH LOCALIZED FREEZE CONDITIONS. A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. $$ MTS
000 WWUS76 KMFR 031441 NPWMFR URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MEDFORD OR 741 AM PDT WED SEP 3 2008 CAZ084-085-ORZ029>031-031545- /O.EXP.KMFR.FR.Y.0021.000000T0000Z-080903T1500Z/ 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... ALTAMONT...KLAMATH FALLS...BEATTY...BLY...CHEMULT...CRESCENT... GILCHRIST...SPRAGUE RIVER...LAKEVIEW 741 AM PDT WED SEP 3 2008 ...FROST ADVISORY WILL EXPIRE AT 8 AM PDT THIS MORNING... THE FROST ADVISORY WILL EXPIRE AT 8 AM PDT THIS MORNING. $$ MTS
The office that day
Everything else NWS Medford, OR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 2:22 PM PDT | Gale Warning | MFR | 6 days | |
| Sep 2, 2:22 PM PDT | Hazardous Seas Warning | MFR | 9 days | |
| Sep 2, 2:22 PM PDT | Small Craft Advisory for Winds | MFR | 72 hr | |
| Sep 2, 2:59 PM PDT | Fire Weather Watch | MFR | Coos, Curry, Jackson, Josephine | 15 hr |
Nearby
Frost Advisories in Oregon, 2008Frost Advisories in California, 2008Every frost advisory in 2008
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.