Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 280829
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0329 AM CDT THU JUN 28 2007
VALID 281200Z - 291200Z
...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF NWRN NV/SERN ORE/SRN
ID/EXTREME NERN CA...
...SYNOPSIS...
EXPANSIVE UPPER-LEVEL TROUGH OVER THE NERN PACIFIC WILL SLOWLY
PROGRESS TOWARDS THE PACIFIC NW COAST AS DOWNSTREAM RIDGE AXIS
SLOWLY PUSHES E FROM THE NRN ROCKIES ONTO THE HIGH PLAINS. BROAD
BELT OF MODERATE TO STRONG MID-LEVEL SWLYS WILL SPREAD FARTHER
INLAND FROM THE PACIFIC NW OVER THE NRN INTERMOUNTAIN WEST...WITH
CRITICAL CONDITIONS LIKELY AHEAD OF A WEAK COLD FRONT. ACROSS THE
SOUTHWEST...MID-LEVEL RIDGING WILL REMAIN ANCHORED FROM OFF BAJA CA
TOWARDS THE FOUR CORNERS AS A PERSISTENT MID-LEVEL LOW HOLDS OVER
THE SRN PLAINS.
...CRITICAL FIRE WEATHER AREA - PORTIONS OF NWRN NV/SERN ORE/SRN
ID/EXTREME NERN CA...
PRIMARY CONDITIONS: STRONG WINDS / LOW RH / LONG-TERM DROUGHT
SWLY MID-LEVEL FLOW WILL INCREASE TO AROUND 45 TO 55 MPH AT 500 MB
BY LATE AFTERNOON FROM THE NRN SIERRAS NEWD TOWARDS THE SAWTOOTH
MTNS AS THE NERN PACIFIC TROUGH APPROACHES. WIDESPREAD SUSTAINED
SURFACE WINDS AROUND 20 TO 25 MPH APPEAR LIKELY TOWARDS EARLY
EVENING AS STEEP LOW-LEVEL LAPSE RATES AID IN MIXING DOWN THE
STRONGER WINDS ALOFT. MIN RH VALUES OF 8 TO 15 PERCENT SHOULD
DEVELOP AS TEMPERATURES GENERALLY WARM INTO THE UPPER 70S TO MIDDLE
90S. THE PASSAGE OF A WEAKENING COLD FRONT DURING THE
EVENING/OVERNIGHT WILL VEER WINDS TO THE W/NW AND IMPROVE RH
RECOVERY FROM WEST TO EAST.
...SWRN UT/SRN NV/NWRN AZ...
IT WILL REMAIN HOT AND VERY DRY AS AFTERNOON TEMPERATURES RISE BACK
INTO THE TRIPLE DIGITS WITH RH VALUES FALLING BELOW 8 PERCENT ACROSS
MUCH OF THE AREA. MODEL GUIDANCE CONTINUES TO INSIST THAT THE
PRESENCE OF A MID-LEVEL RIDGE AXIS WILL MAINTAIN A MODEST FLOW
REGIME. HOWEVER...DEEP MIXING SHOULD SUPPORT LOCALIZED SURFACE WINDS
NEAR 20 MPH DURING THE LATE AFTERNOON WHICH WOULD LEAD TO A BRIEF
PERIOD OF CRITICAL CONDITIONS.
...WRN NM/SERN AZ/SWRN CO...
LITTLE CHANGE TO THE OVERALL SYNOPTIC PATTERN WILL MAINTAIN A THREAT
FOR ISOLATED TO WIDELY SCATTERED DRY TSTMS AGAIN THIS AFTERNOON. AS
OBSERVED ON WED EVENING RAOBS IN GJT AND TUS...DEEPLY-MIXED
THERMODYNAMIC PROFILES ARE EXPECTED TO DEVELOP ALONG THE WRN
PERIPHERY OF MORE SUBSTANTIAL LOW/MID-LEVEL MOISTURE OVER THE SRN
ROCKIES/PLAINS. THE PROXIMITY OF THE MID-LEVEL RIDGE AXIS SHOULD
LIMIT CONVECTIVE COVERAGE.
..GRAMS.. 06/28/2007
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 280946
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0446 AM CDT THU JUN 28 2007
VALID 291200Z - 301200Z
...CRITICAL FIRE WEATHER AREA FOR GREAT BASIN NEWD TOWARDS THE NRN
ROCKIES...
...SYNOPSIS...
A LARGE UPPER-LEVEL TROUGH OVER THE NERN PACIFIC WILL ADVANCE EWD
TOWARDS THE PACIFIC NW/BRITISH COLUMBIA. A POTENT SHORT WAVE TROUGH
AND ATTENDANT SPEED MAX WILL ROTATE FROM THE BASE OF THE UPPER
TROUGH NEWD ACROSS THE PACIFIC NW FRIDAY AFTERNOON. INCREASING WINDS
SHOULD COMBINE WITH AN ANTECEDENT WARM/DRY AIR MASS OVER THE GREAT
BASIN TO PRODUCE A BROAD AREA OF CRITICAL CONDITIONS. FARTHER
S...PERSISTENT MID-LEVEL RIDGE AXIS WILL REMAIN FROM NRN BAJA CA
TOWARDS THE FOUR CORNERS AS CUTOFF LOW STAYS ANCHORED OVER THE SRN
PLAINS.
...CRITICAL FIRE WEATHER AREA - GREAT BASIN NEWD TOWARDS THE NRN
ROCKIES...
PRIMARY CONDITIONS: STRONG WINDS / LOW RH / LONG-TERM DRYNESS
A RATHER LARGE ZONE OF CRITICAL CONDITIONS APPEARS PROBABLE FRIDAY
AFTERNOON/EARLY EVENING AS STRONG SURFACE WINDS OVER THE NW BECOME
JUXTAPOSED WITH VERY LOW RH TO THE SE. THE ADVANCEMENT OF A
NEGATIVELY-TILTED SHORT WAVE TROUGH ACROSS THE PACIFIC NW WILL
STRENGTHEN SWLY MID-LEVEL FLOW PERHAPS AS FAR S AS THE SRN GREAT
BASIN. SUSTAINED WINDS NEAR 30 MPH APPEAR LIKELY ACROSS NRN NV/SERN
ORE/CNTRL ID/SWRN MT...WHILE AREAS FARTHER S SHOULD REMAIN CLOSER TO
20 MPH. THE WARMEST/DRIEST AIR MASS WILL BE OVER THE CNTRL/SRN GREAT
BASIN /SPREADING NEWD TOWARDS THE NRN ROCKIES/ WHERE WIDESPREAD LOW
RH OF 6 TO 12 PERCENT WILL DEVELOP. FARTHER N...MIN RH VALUES SHOULD
BE MORE MARGINAL /AROUND 15 PERCENT/...WITH A RATHER SHARP CUT-OFF
TO SUBSTANTIALLY HIGHER HUMIDITY IN ASSOCIATION WITH THE TROUGH
ALONG THE NWRN EDGE OF THE CRITICAL AREA.
...WRN NM/SERN AZ/SWRN CO...
ISOLATED DRY TSTMS OUGHT TO CONTINUE AS THE REGION REMAINS BETWEEN A
HOT/VERY DRY AIR MASS OVER THE DESERT SW AND MORE ROBUST
LOW/MID-LEVEL MOISTURE REMAINING ACROSS THE SRN ROCKIES/HIGH PLAINS.
SIMILAR TO PREVIOUS DAYS...THE PRESENCE OF THE MID-LEVEL RIDGE AXIS
OVERHEAD SHOULD LIMIT CONVECTIVE COVERAGE.
..GRAMS.. 06/28/2007
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...