Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 260814
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0314 AM CDT TUE JUN 26 2007
VALID 261200Z - 271200Z
...NO CRITICAL AREAS...
...SYNOPSIS...
A MID/UPPER-LEVEL IMPULSE /EVIDENT IN WATER VAPOR IMAGERY OVER CNTRL
CA/ WILL LIFT SLOWLY NEWD INTO THE CNTRL/SRN GREAT BASIN BY EARLY
WED. A NARROW BELT OF MODERATE MID-LEVEL FLOW WILL LEAD TO ENHANCED
LOW-LEVEL FLOW ACROSS THE SRN GREAT BASIN LATE THIS AFTERNOON.
FARTHER EAST...A POTENT MID-LEVEL SHORT WAVE TROUGH WILL PUSH EWD
ACROSS FAR S-CNTRL CANADA. ATTENDANT COLD FRONT WILL DROP S/EWD OVER
THE CNTRL HIGH PLAINS THIS MORNING/AFTERNOON...WITH LOW-LEVEL
UPSLOPE FLOW OCCURRING BEHIND THE BOUNDARY.
...SRN NV/SWRN UT/NWRN AZ/SERN CA...
MODERATE SWLY MID-LEVEL FLOW /30 TO 40 MPH AT 500 MB/ WILL SPREAD
ACROSS THE AREA IN ASSOCIATION WITH A WEAK IMPULSE OVER CNTRL CA.
DESPITE THE ABSENCE OF CLEARLY DISTINGUISHABLE LOW-LEVEL SYNOPTIC
FEATURES...DEEPLY-MIXED THERMODYNAMIC PROFILES WILL AID IN ENHANCING
SURFACE WINDS DURING THE LATE AFTERNOON/EARLY EVENING. ALTHOUGH
SUSTAINED SPEEDS MAY APPROACH 20 MPH BRIEFLY...MOST LOCALES SHOULD
GENERALLY HOLD AROUND 15 MPH. HOT AFTERNOON TEMPERATURES FROM THE
MID 90S TO THE LOWER 110S WILL MAINTAIN WIDESPREAD VERY LOW MIN RH
OF 2 TO 8 PERCENT.
...WRN CO/S-CNTRL WY W OF THE CONTINENTAL DIVIDE...
ISOLATED TO PERHAPS WIDELY SCATTERED DRY TSTMS SHOULD DEVELOP THIS
AFTERNOON AS LOW-LEVEL MOISTURE SPILLS W OF THE CONTINENTAL DIVIDE
AND BECOMES MIXED WITHIN A VERY DRY ANTECEDENT AIR MASS. A NARROW N
TO S AXIS OF HIGH-BASED CONVECTION SHOULD FORM ALONG THE WRN FRINGE
OF HIGHER MOISTURE RETURN OVER SERN WY AND CNTRL/ERN CO. LIMITED
INSTABILITY AND RATHER SLOW STORM MOTIONS SHOULD LIMIT OVERALL
CONVECTIVE COVERAGE/DRY TSTM THREAT.
..GRAMS.. 06/26/2007
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 261000
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0500 AM CDT TUE JUN 26 2007
VALID 271200Z - 281200Z
...CRITICAL FIRE WEATHER AREA FOR NWRN NV/EXTREME NERN CA...
...SYNOPSIS...
A LARGE-SCALE UPPER-LEVEL TROUGH WILL SLOWLY APPROACH THE PACIFIC NW
COAST WHILE DOWNSTREAM RIDGE AXIS WILL SLOWLY SLIDE FROM THE NRN
ROCKIES ONTO THE HIGH PLAINS. A WEAK MID-LEVEL IMPULSE /NOW OVER
CNTRL CA/ WILL IMPINGE UPON THIS RIDGE AS IT TRACKS NEWD ACROSS THE
GREAT BASIN TOWARDS THE NRN/CNTRL ROCKIES. IN THE LOW-LEVELS...WEAK
UPSLOPE/ELY FLOW SHOULD SPREAD HIGHER MOISTURE SLIGHTLY FARTHER WEST
OF THE CONTINENTAL DIVIDE FROM WRN WY TOWARDS THE FOUR CORNERS.
...CRITICAL FIRE WEATHER AREA - NWRN NV/EXTREME NERN CA...
PRIMARY CONDITIONS: LOW RH / GUSTY WINDS / SEVERE DROUGHT
MID-LEVEL FLOW WILL INCREASE /ALBEIT SLOWLY/ AHEAD OF LARGE-SCALE
TROUGH APPROACHING THE PACIFIC NW COAST. THIS SHOULD RESULT IN
AFTERNOON SWLY WINDS AROUND 15 MPH AS RH VALUES FALL TO 10 TO 15
PERCENT. A RELATIVELY SHORT UPSWING IN WINDS SHOULD OCCUR EARLY WED
EVENING AS A SURFACE TROUGH DEVELOPS E OF THE SIERRA MTNS AND WINDS
VEER TO THE W/NW. THIS WOULD LIKELY OCCUR IN COMBINATION WITH LOW RH
PRODUCING A PERIOD OF CRITICAL CONDITIONS...BEFORE RH RECOVERY
IMPROVES.
...SRN NV/SWRN UT/NWRN AZ...
IT WILL REMAIN HOT AND VERY DRY ACROSS THE SRN GREAT BASIN/LOWER CO
RIVER VALLEY WITH MODEST LOW/MID-LEVEL SWLY FLOW. AFTERNOON
TEMPERATURES WILL LIKELY REACH THE MID 90S TO LOWER 110S AGAIN WITH
MIN RH VALUES OF 2 TO 6 PERCENT. HOWEVER...SUSTAINED AFTERNOON WIND
SPEEDS WILL LIKELY HOLD NEAR 15 MPH.
...WRN WY SWD THROUGH FAR ERN AZ/WRN NM...
A RATHER NARROW ZONE FOR DRY TSTMS SHOULD EXIST AT THE JUXTAPOSITION
OF A HOT/DRY AIR MASS OVER THE GREAT BASIN/SOUTHWEST AND A MUCH MORE
MOIST AIR MASS WITHIN AN UPSLOPE FLOW REGIME OVER THE ROCKIES.
HOWEVER...CONVECTIVE COVERAGE WILL LIKELY REMAIN ISOLATED WITHIN
THIS ZONE. AN EXCEPTION MAY BE ACROSS WRN WY...WHERE COVERAGE COULD
BE ENHANCED AS A MID-LEVEL IMPULSE /CURRENTLY OVER CNTRL CA/ TRACKS
NEWD AND INCREASES LARGE-SCALE LIFT. IF CONFIDENCE IN THIS SCENARIO
INCREASES...PORTIONS OF THIS AREA MAY BE UPGRADED IN A FUTURE
OUTLOOK.
..GRAMS.. 06/26/2007
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...