FREEZE WARNING
Issue Date: 311 AM PST THU DEC 24 2009
Expiration: 900 AM PST THU DEC 24 2009

...FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING...
A FREEZE WARNING REMAINS IN EFFECT UNTIL 9 AM PST THIS MORNING.
* TEMPERATURES WILL FALL INTO UPPER 20S TO LOWER 30S ACROSS COOS
  COUNTY LATE THIS EVENING...THROUGH EARLY THURSDAY MORNING.
* ALTHOUGH SOME AREAS WILL REMAIN ABOVE FREEZING TONIGHT...OTHER
  AREAS ARE LIKELY TO EXPERIENCE TEMPERATURES AT OR BELOW
  FREEZING FOR 3 HOURS OR MORE.
* THE COLDEST TEMPERATURES ARE LIKELY TO BE IN AND NEAR
  CHARLESTON.
* TEMPERATURES ON CHRISTMAS MORNING ARE EXPECTED TO BE SLIGHTLY
  WARMER BUT STILL COLD ENOUGH TO ALLOW FOR FROST FORMATION.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FREEZE WARNING MEANS SUB-FREEZING TEMPERATURES ARE IMMINENT OR
HIGHLY LIKELY. THESE CONDITIONS WILL KILL CROPS AND OTHER
SENSITIVE VEGETATION.
&&
$$

AIR STAGNATION ADVISORY
Issue Date: 311 AM PST THU DEC 24 2009
Expiration: 400 PM PST SAT DEC 26 2009

...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
SATURDAY...
AN AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 4 PM PST
SATURDAY.
* STRENGTHENING HIGH PRESSURE OVER THE REGION HAS DEVELOPED AN
  INVERSION OVER THE VALLEYS OF SOUTHERN OREGON.
* THIS INVERSION WILL STRENGTHEN TONIGHT AND IS LIKELY TO
  PERSIST THROUGH AT LEAST SATURDAY.
* COLD AND STABLE AIR WILL REMAIN TRAPPED IN THE VALLEYS.
  THEREFORE TEMPERATURES WILL BE WARMER IN THE MOUNTAINS THAN IN
  THE VALLEYS THROUGH SATURDAY.
* POLLUTANTS SUCH AS SMOKE AND OTHER AIRBORNE PARTICULATES WILL
  BECOME TRAPPED IN THE VALLEYS AND...AT TIMES...AT MID
  ELEVATIONS. THIS WILL CREATE THE POTENTIAL FOR DIMINISHING AIR
  QUALITY.
* LOCALLY DENSE FREEZING FOG WILL FORM IN MANY VALLEYS SUCH AS
  THE ROGUE...UMPQUA...AND ILLINOIS VALLEYS. THIS WILL CREATE
  THE POTENTIAL FOR SLIPPERY ROADWAYS DUE TO FROST FORMATION.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
AN AIR STAGNATION ADVISORY INDICATES THAT DUE TO LIMITED MOVEMENT
OF AN AIRMASS ACROSS THE ADVISORY AREA...POLLUTION WILL INCREASE.
&&
$$

HAZARDOUS WEATHER OUTLOOK
Issue Date: 411 PM PST WED DEC 23 2009
Expiration: 900 AM PST THU DEC 24 2009

Expires:200912241700;;
FLUS46 KMFR 240005
HWOMFR
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MEDFORD OR
405 PM PST WED DEC 23 2009
ORZ021-241700-
SOUTH CENTRAL OREGON COAST-
405 PM PST WED DEC 23 2009
THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHWEST
OREGON.
.DAY ONE...TONIGHT
A FREEZE WARNING IS EFFECT BEGINNING AT 10 PM PST TONIGHT. SEE
WEATHER MESSAGE FOR MORE SPECIFIC DETAILS.
.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY
THE FREEZE WARNING WILL BE IN EFFECT UNTIL 9 AM PST THURSDAY.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS NOT NEEDED.
$$