Frost Advisory 37, NWS Medford, OR

706 
WWUS76 KMFR 110916
NPWMFR

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MEDFORD OR
216 AM PDT TUE SEP 11 2012

...CHILLY WITH AREAS OF FROST TUESDAY MORNING...

.CLEAR SKIES AND LIGHT WINDS WILL ALLOW TEMPERATURES TO FALL INTO
THE MIDDLE 30S BY TUESDAY MORNING WITH AREAS OF FROST.

ORZ029-111500-
/O.CON.KMFR.FR.Y.0037.120911T1000Z-120911T1500Z/
KLAMATH BASIN-
INCLUDING THE CITIES OF...ALTAMONT...KLAMATH FALLS
216 AM PDT TUE SEP 11 2012

...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM PDT THIS MORNING...

A FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM PDT THIS MORNING. 

* TEMPERATURES: 33 TO 36 DEGREES.

* LOCATIONS INCLUDE: ALTAMONT...KLAMATH FALLS.

* IMPACTS: SENSITIVE VEGETATION COULD BE DAMAGED OR KILLED BY 
  FROST IF NOT PROPERLY PROTECTED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

CAZ082-084-111500-
/O.CON.KMFR.FR.Y.0037.120911T1000Z-120911T1500Z/
SOUTH CENTRAL SISKIYOU COUNTY-
NORTHEAST SISKIYOU AND NORTHWEST MODOC COUNTIES-
INCLUDING THE CITY OF...DORRIS
216 AM PDT TUE SEP 11 2012

...FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM PDT THIS MORNING...

A FROST ADVISORY REMAINS IN EFFECT UNTIL 8 AM PDT THIS MORNING. 

* TEMPERATURES: 33 TO 36 DEGREES.

* LOCATIONS INCLUDE: DORRIS...RURAL AREAS EAST OF MCCLOUD.

* IMPACTS: SENSITIVE VEGETATION COULD BE DAMAGED OR KILLED BY 
  FROST IF NOT PROPERLY PROTECTED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

STOCKTON

743 
WWUS76 KMFR 111452
NPWMFR

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MEDFORD OR
752 AM PDT TUE SEP 11 2012

ORZ029-111600-
/O.EXP.KMFR.FR.Y.0037.000000T0000Z-120911T1500Z/
KLAMATH BASIN-
INCLUDING THE CITIES OF...ALTAMONT...KLAMATH FALLS
752 AM PDT TUE SEP 11 2012

...FROST ADVISORY WILL EXPIRE AT 8 AM PDT THIS MORNING...

THE FROST ADVISORY WILL EXPIRE AT 8 AM PDT THIS MORNING. 

* TEMPERATURE: TEMPERATURES ARE SLOWLY WARMING THIS MORNING AND
  MOVING ABOVE FROST CONDITIONS.

* LOCATIONS INCLUDE: ALTAMONT...KLAMATH FALLS.

$$

CAZ082-084-111600-
/O.EXP.KMFR.FR.Y.0037.000000T0000Z-120911T1500Z/
SOUTH CENTRAL SISKIYOU COUNTY-
NORTHEAST SISKIYOU AND NORTHWEST MODOC COUNTIES-
INCLUDING THE CITY OF...DORRIS
752 AM PDT TUE SEP 11 2012

...FROST ADVISORY WILL EXPIRE AT 8 AM PDT THIS MORNING...

THE FROST ADVISORY WILL EXPIRE AT 8 AM PDT THIS MORNING. 

* TEMPERATURE: TEMPERATURES ARE SLOWLY WARMING THIS MORNING AND
  MOVING ABOVE FROST CONDITIONS.

* LOCATIONS INCLUDE: DORRIS.

$$

MSO

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MEDFORD OR
838 AM PDT MON SEP 10 2012

.DISCUSSION...CHILLY START IN MANY LOCATIONS THIS MORNING. ONLY
DIPPED INTO THE UPPER 40S AT THE AIRPORT IN MEDFORD, BUT OUTLYING
LOCATIONS WERE DOWN CLOSER TO 40. OTHER RURAL AREAS LIKE THE
ILLINOIS VALLEY SAW SOME UPPER 30S. THE AIRMASS WILL REMAIN COOL
THROUGH TONIGHT AND GIVEN THIS MORNING'S READINGS, FROST WILL BE
POSSIBLE IN SOME WEST SIDE LOCATIONS TONIGHT.

THE MAIN UPPER TROUGH WILL MOVE BY TO OUR NORTH ALONG THE US/CAN
BORDER TODAY. THE ASSOCIATED COLD FRONT IS NOW OVER THE NORTH
COAST AND WILL WASH OUT AS IT MOVES ACROSS THE REMAINDER OF THE
WEST SIDE TODAY. SOME LIGHT RAIN IS BEING REPORTED OVER THE
WILLAMETTE VALLEY THIS MORNING AND SOME MAY WORK INTO THE COOS
COAST AND THE UMPQUA THIS MORNING, BUT THAT'S ABOUT IT. WE WILL BE
COOLER THAN NORMAL TODAY WITH WEAK COLD ADVECTION BEHIND THE
FRONT. AS HIGH PRESSURE BUILDS IN BEHIND THE FRONT AND GRADIENTS
TIGHTEN, WE WILL ALSO SEE GUSTY WINDS MOST AREAS THIS AFTERNOON.
HUMIDITIES WILL BE HIGHER THAN WE'VE SEEN LATELY SO THE WINDS
SHOULDN'T PRESENT TOO MUCH OF A FIRE CONCERN TODAY. A GREATER FIRE
CONCERN COMES OVER THE NEXT COUPLE OF DAYS AS WINDS TURN OFFSHORE
AND THE HEAT BEGINS BUILDING AGAIN. WE WILL BE LOOKING CLOSELY AT
THAT TODAY. -WRIGHT

&&

.AVIATION...A WEAK COLD FRONT IS MOVING OVER THE NORTH COAST THIS
MORNING PRODUCING MOSTLY MVFR CIGS WILL LOCAL IFR/LIFR CIGS AT THE
IMMEDIATE COASTLINE (INCLUDING KOTH). CLOUD SEE SOME -RA OVER THE
COOS COAST AND UMPQUA THIS MORNING, BUT THIS SHOULD DISSIPATE
THROUGH THE MORNING AS THE FRONT WASHES OUT. EXPECT CIGS TO
INCREASE TO MVFR OVER THIS AREA BY EARLY AFTERNOON. ELSEWHERE VFR
CONDITIONS WILL PREVAIL TODAY WITH SOME SHALLOW CUMULUS BUILDUPS
THIS AFTERNOON, MAINLY OVER THE MOUNTAINS. GUSTY NORTHWEST WINDS
ARE EXPECTED THIS AFTERNOON, ESPECIALLY WEST SIDE LOCATIONS.

&&

.PREV DISCUSSION... /ISSUED 257 AM PDT MON SEP 10 2012/

DISCUSSION...A COOL NORTHWESTERLY FLOW WILL REMAIN OVER SOUTHERN
OREGON AND NORTHERN CALIFORNIA THROUGH WEDNESDAY. HOWEVER...AN
OFFSHORE FLOW WILL DEVELOP OVER THE COASTAL RANGE THIS AFTERNOON
AND STRENGTHEN ON TUESDAY AND CONTINUE THROUGH WEDNESDAY. THIS MAY
ALLOW OVERNIGHT COASTAL MOUNTAIN RIDGE TEMPERATURES TO REMAIN
RATHER WARM TUESDAY NIGHT INTO WEDNESDAY MORNING AS THE WIND BLOWS ALL
NIGHT THERE WHILE VALLEY OVERNIGHT LOWS DROP DOWN CONSIDERABLY AS
THE WIND GOES CALM THERE. LOOKING FOR COLDEST LOWS TUESDAY MORNING
WITH WIDESPREAD 30S AND 40S WEST OF THE CASCADES AND WIDESPREAD
MID 20S TO LOW 30S EAST OF THE CASCADES. THOSE FORECAST MID 20S TO
LOW 30S FOR THE EAST SIDE HAS PROMPTED A FREEZE WATCH FOR TUESDAY
MORNING FOR MUCH OF KLAMATH AND LAKE COUNTIES PLUS A BIT OF
SISKIYOU AND MODOC COUNTIES IN NORTHERN CALIFORNIA.

AFTER THIS COLD SNAP...HIGH PRESSURE BUILDS BACK WITH A STRONG
BLOCKING PATTERN SETTING UP OFFSHORE FROM MID WEEK INTO THE
WEEKEND. TEMPERATURES...ESPECIALLY AFTERNOON HIGHS...WILL RISE
RAPIDLY. THURSDAY HIGH TEMPS SHOULD BE WELL ABOVE NORMAL WITH
VERY SUMMERLIKE VALUES. THE RIDGE BREAKS DOWN A BIT FOR THE
WEEKEND AND A SLIGHT BIT OF INSTABILITY WORKS INTO EASTERN KLAMATH
AND LAKE COUNTIES. MOISTURE LOOKS VERY LIMITED AT THIS TIME SO
HAVE ONLY DEPICTED SOME CUMULUS BUILDUPS OVER THE HIGHER TERRAIN
IN THE SKY GRIDS.

&&

.MFR WATCHES/WARNINGS/ADVISORIES...
OR...FREEZE WATCH FROM LATE TONIGHT THROUGH TUESDAY MORNING FOR
     ORZ029>031.
     RED FLAG WARNING UNTIL 11 PM PDT THIS EVENING FOR
     ORZ027-030-031.

CA...FREEZE WATCH FROM LATE TONIGHT THROUGH TUESDAY MORNING FOR
     CAZ082-084.

PZ...GALE WATCH FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR
     PZZ350-356.
     SMALL CRAFT ADVISORY FOR WINDS FROM 2 PM THIS AFTERNOON TO 2 PM
     PDT TUESDAY FOR PZZ350-356-370.
     HAZARDOUS SEAS WATCH FROM TUESDAY AFTERNOON THROUGH TUESDAY
     EVENING FOR PZZ350-356.
     SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS FROM 2 PM THIS AFTERNOON
     TO 2 PM PDT TUESDAY FOR PZZ350-356-370.
     SMALL CRAFT ADVISORY FOR WINDS UNTIL 2 PM PDT THIS AFTERNOON FOR
     PZZ376.
     HAZARDOUS SEAS WARNING FROM 2 PM THIS AFTERNOON TO 11 PM PDT
     WEDNESDAY FOR PZZ376.
     GALE WARNING FROM 2 PM THIS AFTERNOON TO 5 AM PDT WEDNESDAY FOR
     PZZ376.
     SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS UNTIL 2 PM PDT THIS
     AFTERNOON FOR PZZ376.
     GALE WATCH FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING FOR
     PZZ370.
     HAZARDOUS SEAS WATCH FROM TUESDAY AFTERNOON THROUGH LATE TUESDAY
     NIGHT FOR PZZ370.