Freeze Warning 2, NWS Medford, OR

000 
WWUS76 KMFR 180553
NPWMFR

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MEDFORD OR
953 PM PST WED JAN 17 2007

ORZ021-181500-
/O.CON.KMFR.FZ.W.0002.070118T0800Z-070118T1700Z/
SOUTH CENTRAL OREGON COAST-
INCLUDING THE CITIES OF...COOS BAY...NORTH BEND...REEDSPORT...
COQUILLE
953 PM PST WED JAN 17 2007

...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM PST THURSDAY...

A FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM PST THURSDAY FOR THE
SOUTH CENTRAL OREGON COAST.

A COLD AIRMASS COMBINED WITH OFFSHORE FLOW WILL CAUSE
TEMPERATURES TO FALL INTO THE UPPER 20S IN COOS COUNTY AND WESTERN
DOUGLAS COUNTY AFTER MIDNIGHT THROUGH EARLY THURSDAY MORNING.

A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER
SENSITIVE VEGETATION.TO PREVENT FREEZING AND POSSIBLE BURSTING OF
OUTDOOR WATER PIPES...PIPES SHOULD BE WRAPPED...DRAINED...OR
ALLOWED TO DRIP SLOWLY.  THOSE THAT HAVE IN-GROUND SPRINKLER
SYSTEMS SHOULD DRAIN THEIR SYSTEMS...OR COVER ANY ABOVE-GROUND
PIPES TO PROTECT THEM FROM FREEZING.

$$

DW

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MEDFORD OR
850 AM PST WED JAN 17 2007

.DISCUSSION...LOW CLOUDS AND FOG FORMED OVER VALLEYS ALONG THE I-5
CORRIDOR OVERNIGHT. THE MEDFORD 12Z SOUNDING SHOWS SATURATED AIRMASS
FROM THE SURFACE TO 5500 FEET WITH AN INVERSION AT 2000 FEET. ALL
THIS SPELLS DIFFICULT FOR CLEARING AND WARMING FOR WESTERN INTERIOR
VALLEYS TODAY. THE COAST IS EXPERIENCING A SLIGHT OFFSHORE FLOW AND
SKIES ARE CLEAR THIS MORNING. EAST OF CASCADES ARE ALSO CLEAR EXCEPT
FOR EASTERN LAKE COUNTY AND PORTIONS OF MODOC COUNTY WHICH HAVE A
LOW OVERCAST.

MASSIVE DRYING ALOFT AS A POSITIVE TILT RIDGE BUILDS OVER PACIFIC
NORTHWEST TODAY.

WILL UPDATE THE FORECAST THIS MORNING TO ACCOUNT FOR THE PERSISTENT
CLOUDS OVER THE WESTERN INTERIOR VALLEYS AND CLEAR SKIES AT THE
COAST.

.PREV DISCUSSION...CLOSED LOW CIRCULATION OVER NORTHERN
CALIF WILL CONTINUE TO MOVE SOUTHWARD AWAY FROM THE REGION TODAY.
THIS WILL ALLOW A WEAK RIDGE OFF THE COAST TO EXTEND INTO THE REGION
THROUGH THURSDAY. THE MODELS SHOW A WARM FRONT MOVING INLAND TO OUR
NORTH LATE TONIGHT AND THURSDAY MORNING. ANY PRECIPITATION IS
EXPECTED TO REMAIN TO OUR NORTH. ON FRIDAY THE RIDGE FLATTENS OUT
AND ANOTHER WEAK SYSTEM MOVES THROUGH THE PACIFIC NW AND ANY
PRECIPITATION REMAINS NORTH OF OUR REGION.

FOR THE EXTENDED PERIOD...EXPECTING GENERALLY DRY WEATHER THROUGH
THE PERIOD. RIDGE OFFSHORE NEAR 140W ON SATURDAY IS TEMPORARILY
FLATTENED AS ENERGY MOVES EAST ALONG 50N AND INTO BRITISH COLUMBIA.
ON SUNDAY THE RIDGE BECOMES SHARPER AS IT MOVES EAST TO 130W. LITTLE
CHANGE IN POSITION MONDAY. BY TUESDAY THE CENTER OF THE HIGH SHIFTS
TO ALONG THE OREGON COAST.

&&

.AVIATION...WIDESPREAD AREAS OF IFR CONDITIONS DUE TO VERY LOW
CEILINGS AND FOG FOR INTERIOR VALLEYS WEST OF CASCADES THIS MORNING.
MVFR DUE TO LOW CEILINGS IN EASTERN LAKE COUNTY AND PORTIONS OF
MODOC COUNTY. THESE CONDITIONS WILL IMPROVE TO MOSTLY VFR THIS
AFTERNOON.

&&

.MFR WATCHES/WARNINGS/ADVISORIES...
OR...NONE.

CA...NONE.

PACIFIC COASTAL WATERS...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS
UNTIL 10 PM PST THIS
     EVENING FOR PZZ356-PZZ376.
     SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS UNTIL 4 PM PST THIS
     AFTERNOON FOR PZZ350-PZZ370.

07/03

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MEDFORD OR
1031 AM PST WED JAN 17 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1029 AM     SNOW             2 NNE SELMA             42.30N 123.59W
01/17/2007  M3.5 INCH        JOSEPHINE          OR   TRAINED SPOTTER

1029 AM     SNOW             5 NNE SELMA             42.34N 123.57W
01/17/2007  M3.0 INCH        JOSEPHINE          OR   TRAINED SPOTTER

&&

PETRUCEL