Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 050912
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0412 AM CDT SAT MAY 05 2007
VALID 051200Z - 061200Z
...CRITICAL FIRE WEATHER AREA FOR SRN CA AND LOWER CO RIVER
VALLEY...
...CRITICAL FIRE WEATHER AREA FOR SRN ROCKIES/HIGH PLAINS...
...CRITICAL FIRE WEATHER AREA FOR NERN WI/NRN LOWER AND WRN UPPER
MI...
...SYNOPSIS...
LARGE UPPER-LEVEL TROUGH WILL REMAIN ANCHORED ACROSS THE ROCKIES
TODAY. TWO MID-LEVEL SPEED MAXIMA ARE EXPECTED TO EVOLVE WITH ONE
LIFTING N/NNEWD ACROSS THE NRN PLAINS AND THE OTHER HANGING BACK IN
THE BASE OF THE TROUGH ACROSS THE SWRN DESERTS/SRN ROCKIES. IN
ASSOCIATION WITH THE FIRST SPEED MAX...LEE SURFACE LOW WILL LIFT NWD
FROM THE CNTRL TO THE NRN HIGH PLAINS. SURFACE DRY LINE WILL EXTEND
SWD ACROSS WRN KS/OK/TX. DOWNSTREAM...SURFACE HIGH PRESSURE WILL
SLIDE SLOWLY SWD FROM HUDSON BAY ACROSS SERN CANADA...MAINTAINING A
STRONG PRESSURE GRADIENT ACROSS THE UPPER MIDWEST/WRN GREAT LAKES.
AS SECONDARY MID-LEVEL SPEED MAX EJECTS EWD ACROSS THE SW TO THE SRN
ROCKIES...N/NELY OFFSHORE FLOW WILL STRENGTHEN OVER SRN CA.
...CRITICAL FIRE WEATHER AREA - SRN CA AND LOWER CO RIVER VALLEY...
PRIMARY CONDITIONS: STRONG WINDS / LOW RH / SEVERE TO EXTREME
DROUGHT
GUSTY NLY WINDS WILL DEVELOP ACROSS THE LOWER CO RIVER VALLEY/SRN NV
REGION THIS AFTERNOON AS A COLD FRONT PASSES THROUGH THIS MORNING.
DESPITE SLIGHTLY COOLER SURFACE TEMPERATURES...STEEPENING LOW-LEVEL
LAPSE RATES WILL LEAD TO STRONG VERTICAL MIXING. SURFACE WINDS FROM
20 TO 30 MPH ARE LIKELY AS RH VALUES DROP TO 10 TO 15 PERCENT.
FARTHER W ACROSS THE SRN CA COASTAL RANGE...OFFSHORE FLOW WILL
BECOME MORE PRONOUNCED LATER TONIGHT THROUGH EARLY SUN AS LARGE
SCALE SUBSIDENCE INCREASES TO THE WEST OF THE MID-LEVEL TROUGH AXIS.
WIND GUSTS IN EXCESS OF 40 MPH APPEAR LIKELY ACROSS
CANYONS/PASSES...ESPECIALLY N OF THE LA BASIN. GIVEN THE STRONG
DOWNSLOPE WARMING/DRYING...RH VALUES SHOULD DROP TO 10 TO 15 PERCENT
AS WELL.
...CRITICAL FIRE WEATHER AREA - SRN ROCKIES/HIGH PLAINS...
PRIMARY CONDITIONS: STRONG WINDS / LOW RH
GUSTY SWLY WINDS HAVE BEEN ONGOING THIS MORNING ACROSS SERN AZ/SRN
NM/FAR W TX. THIS WILL CONTINUE THROUGH THIS AFTERNOON...EXPANDING
N/EWD AS THE DRY LINE MIXES E. ALTHOUGH RECENT RAINFALL AND SPRING
GREEN-UP MAY BE MITIGATING FACTORS IN SOME AREAS...THE DURATION OF
STRONG SWLY FLOW SHOULD ENHANCE THE OVERALL FIRE WEATHER THREAT.
WITH INTENSE MID-LEVEL FLOW OVERHEAD /500 MB WINDS AOA 70
MPH/...SUSTAINED SURFACE SPEED THIS AFTERNOON WILL REACH 25 TO 35
MPH WITH GUSTS NEAR 50 MPH. TEMPERATURES WILL WARM INTO THE 70S AND
80S WITH RH VALUES FALLING TO 10 TO 15 PERCENT.
...CRITICAL FIRE WEATHER AREA - NERN WI/NRN LOWER AND WRN UPPER
MI...
PRIMARY CONDITIONS: MODERATE WINDS / LOW RH / RECENT DRYNESS
BETWEEN SURFACE LOW PRESSURE OVER THE NRN/CNTRL HIGH PLAINS AND HIGH
PRESSURE INVOF HUDSON BAY...A RATHER TIGHT PRESSURE GRADIENT SHOULD
LEAD TO ELY WINDS AROUND 20 TO 25 MPH THIS AFTERNOON. ALTHOUGH
TEMPERATURES ARE NOT EXPECTED TO BE OVERLY WARM /UPPER 50S TO MIDDLE
60S/...DEW POINTS SHOULD MIX INTO THE TEENS TO MID 20S AWAY FROM THE
IMMEDIATE LAKE SHORES. THIS WILL PROVIDE CRITICALLY LOW RH VALUES OF
15 TO 20 PERCENT.
..GRAMS.. 05/05/2007
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 050959
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0459 AM CDT SAT MAY 05 2007
VALID 061200Z - 071200Z
...CRITICAL FIRE WEATHER AREA FOR SRN CA COASTAL AREA...
...CRITICAL FIRE WEATHER AREA FOR NRN WI/WRN UPPER MI...
...SYNOPSIS...
HIGHLY AMPLIFIED UPPER-LEVEL PATTERN WILL CONTINUE WITH TROUGH
ACROSS THE ROCKIES/HIGH PLAINS AND RIDGE FROM THE LOWER MS RIVER
VALLEY TO THE GREAT LAKES. SURFACE LOW PRESSURE OVER THE NRN HIGH
PLAINS SHOULD LIFT N/NEWD INTO S-CNTRL CANADA WITH AN ASSOCIATED
COLD FRONT PUSHING VERY SLOWLY EWD ACROSS THE GREAT PLAINS. TO THE E
AND W OF THIS SYSTEM...SURFACE HIGH PRESSURE WILL BUILD OVER THE ERN
GREAT LAKES AND ACROSS THE NWRN CONUS OVER THE NRN GREAT BASIN.
...CRITICAL FIRE WEATHER AREA - SRN CA COASTAL AREA...
PRIMARY CONDITIONS: GUSTY WINDS / LONG DURATION OF LOW RH / SEVERE
TO EXTREME DROUGHT
GUSTY OFFSHORE WINDS ARE EXPECTED TO BE ONGOING EARLY SUN WITH LOW
RH ACROSS THE COASTAL MTNS. N/NELY MID-LEVEL FLOW SHOULD REMAIN AT
LEAST MODERATELY STRONG AS ZONE OF ENHANCED WINDS CONTINUES W OF THE
ROCKIES TROUGH. SURFACE WINDS WILL LIKELY SUBSIDE DURING THE
DAY...BEFORE INCREASING ONCE AGAIN SUN EVENING THROUGH EARLY MON AS
THE SURFACE PRESSURE GRADIENT DIURNALLY STRENGTHENS. SUSTAINED
SPEEDS OF 15 TO 25 MPH APPEAR LIKELY WITH HIGHER GUSTS. GIVEN THE
OFFSHORE FLOW REGIME...A PARTICULARLY LONG DURATION OF CRITICALLY
LOW RH APPEARS LIKELY.
...CRITICAL FIRE WEATHER AREA - NRN WI/WRN UPPER MI...
PRIMARY CONDITIONS: MODERATE WINDS / LOW RH / RECENT DRYNESS
TEMPERATURES ARE EXPECTED TO BE WARMER COMPARED TO DAY 1 /60S TO
LOWER 70S/...AS SURFACE WINDS BECOME MORE S/SELY WITH HIGH PRESSURE
SLIDING FARTHER S OF THE REGION. WITH A DRY AIR MASS IN
PLACE...CRITICALLY LOW RH FROM 12 TO 20 PERCENT SHOULD DEVELOP.
SUSTAINED SURFACE WINDS FROM 20 TO 25 MPH SHOULD OCCUR ONCE AGAIN AS
A 30 TO 40 MPH LOW-LEVEL JET REMAINS OVERHEAD.
..GRAMS.. 05/05/2007
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...