Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 110726
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0226 AM CDT SAT OCT 11 2008
VALID 111200Z - 121200Z
...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF NRN/CNTRL CA...
...SYNOPSIS...
EXPANSIVE UPPER-LEVEL TROUGH WILL GRADUALLY PROGRESS EWD ACROSS THE
WRN CONUS THROUGH EARLY SUN. INTENSE MID-LEVEL JET /500 MB WINDS
AROUND 120 MPH/ WILL BE CENTERED ALONG THE BASE OF THE TROUGH FROM
THE CA COAST TO THE LOWER CO RIVER VALLEY AND FOUR CORNERS BY
12/00Z. AT THE SURFACE...PRIMARY CYCLONE SHOULD REMAIN ANCHORED OVER
ERN UT/WRN CO THROUGH THE AFTERNOON...WITH ATTENDANT COLD FRONT
MARCHING E/SEWD ACROSS THE SOUTHWEST.
...CRITICAL FIRE WEATHER AREA - PORTIONS OF NRN/CNTRL CA...
PRIMARY CONDITIONS: MODERATE TO STRONG WINDS / LOW RH / SEVERE
DROUGHT
LATEST ASOS/MESONET OBSERVATIONS CONFIRM GUSTY NLY WINDS CONTINUING
FROM FRI AFTERNOON INVOF SACRAMENTO VALLEY AND ADJACENT
FOOTHILLS...WHICH HAS LENT TO ONLY FAIR RH RECOVERY DESPITE COOL
TEMPERATURES IN THE 40S/50S. AS INSOLATION COMMENCES AND THE
BOUNDARY LAYER DEEPENS...STEEPENING LOW-LEVEL LAPSE RATES WILL
MAINTAIN SUSTAINED SURFACE WINDS FROM 20 TO 25 MPH THROUGH MUCH OF
THE DAY. WITH SURFACE TEMPERATURES WARMING INTO THE UPPER 60S TO
LOWER 70S...RH VALUES FROM 10 TO 15 PERCENT SHOULD BE COMMON.
...NERN AZ...
VERY STRONG WINDS MAY BECOME BRIEFLY JUXTAPOSED WITH MARGINALLY LOW
RH/WARM TEMPERATURES DURING THE LATE AFTERNOON AS RAPID DRYING
ENSUES IN THE WAKE OF A COLD FRONT PASSAGE. ALTHOUGH GUIDANCE
FORECASTS ARE GENERALLY CONSISTENT WITH INDICATING SUSTAINED SURFACE
WINDS FROM 25 TO 40 MPH...THEY DIFFER SUBSTANTIALLY WITH
THERMODYNAMIC PARAMETERS GIVEN TIGHT GRADIENTS INVOF FRONTAL
BOUNDARY. IN ADDITION...THE POTENTIAL FOR RAINFALL TO DEVELOP ALONG
THE FRONT LATER THIS MORNING CASTS UNCERTAINTY ON THE DRYNESS OF
FUELS.
..GRAMS.. 10/11/2008
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 110858
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0358 AM CDT SAT OCT 11 2008
VALID 121200Z - 131200Z
...CRITICAL FIRE WEATHER AREA FOR SRN CA COASTAL AREA...
...SYNOPSIS...
LARGE-SCALE WRN CONUS UPPER-LEVEL TROUGH SHOULD BECOME INCREASINGLY
ELONGATED AS EMBEDDED SHORT WAVE LIFTS N FROM THE CNTRL ROCKIES OVER
THE NRN HIGH PLAINS...WHILE A SECONDARY VORTICITY MAXIMUM HANGS BACK
ACROSS THE SOUTHWEST. AT THE SURFACE...HIGH PRESSURE WILL BUILD FROM
THE PACIFIC NW INTO THE CNTRL GREAT BASIN.
...CRITICAL FIRE WEATHER AREA - SRN CA COASTAL AREA...
PRIMARY CONDITIONS: GUSTY OFFSHORE WINDS / LOW RH / MODERATE TO
SEVERE DROUGHT
OFFSHORE FLOW WILL INCREASE LATE SUN NIGHT INTO EARLY MON
MORNING...AS A SHORT WAVE TROUGH PASSES TO THE NE OF THE REGION AND
A SURFACE HIGH BUILDS INTO THE GREAT BASIN. THE NET RESULT WILL BE
STRENGTHENING AND VEERING OF LOW/MID-LEVEL FLOW TO A MORE N/NELY
COMPONENT. THIS SHOULD LEAD TO SUSTAINED WINDS OF 20 TO 30 MPH
COINCIDENT WITH RH VALUES AROUND 15 PERCENT IN FAVORED
CANYONS/PASSES OF THE COASTAL MTNS FROM 06-12Z ON THE 13TH.
...PORTIONS OF THE SACRAMENTO VALLEY AND ADJACENT FOOTHILLS/COASTAL
MTNS OF NRN CA...
LOCALLY GUSTY NLY WINDS WILL LIKELY BE ONGOING SUN MORNING AND
SHOULD REDEVELOP SUN NIGHT AS THE SURFACE PRESSURE GRADIENT
NOCTURNALLY TIGHTENS. THIS WILL MAINTAIN POCKETS OF POOR OVERNIGHT
RH RECOVERY WITH WIDESPREAD LOW VALUES FROM 8 TO 15 PERCENT DURING
THE DAY. ONE CHANGE FROM FRI AND SAT WILL BE AN INCREASE IN
SUBSIDENCE AND WARMING IN THE MID-LEVELS...LIMITING BOUNDARY LAYER
DEPTH. THIS WILL INHIBIT MIXING OF STRONGER WINDS ALOFT AND
SUSTAINED SURFACE SPEEDS SHOULD STRUGGLE TO REACH 20 MPH OVER MOST
OF THE AREA.
..GRAMS.. 10/11/2008
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...