Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 070855
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0355 AM CDT FRI JUL 07 2006
VALID 071200Z - 081200Z
...NO CRITICAL AREAS...
...SYNOPSIS...
AN UPPER RIDGE WILL REMAIN IN CONTROL OVER THE CENTRAL CONUS WHILE
SLOWLY BUILDING OVER THE WEST. THE BUILDING UPPER RIDGE OVER THE
WEST WILL LEAD TO A WARMING/DRYING TREND OVER MUCH OF THE INTERIOR
PAC NW/GREAT BASIN...ALTHOUGH A FEW DRY TSTMS WILL BE POSSIBLE OVER
THE GREAT BASIN. MID LEVEL /MONSOONAL/ MOISTURE WILL CONTINUE TO BE
PRESENT OVER MUCH OF THE ROCKIES...WHERE SCT-NMRS WET TSTMS WILL
OCCUR. A SHORTWAVE TROUGH WILL TOP THE RIDGE OVER THE NRN ROCKIES
AND SUPPORT A COLD FRONT/LEE TROUGH TO MOVE THROUGH THE NRN HIGH
PLAINS. MODERATE NWLY WINDS WILL OCCUR BEHIND THE COLD FRONT AND
SUPPORT NEAR CRITICAL FIRE WEATHER CONDITIONS GIVEN EXPECTED LOW RH
READINGS. SFC HIGH PRESSURE WILL BE THE DOMINANT FEATURE MOST OF THE
ERN HALF OF THE NATION LEADING TO DRY CONDITIONS AND LIGHT WINDS.
SLY WINDS WILL INCREASE OVER THE PLAINS STATES AHEAD OF THE ROCKIES
SHORTWAVE TROUGH AS SFC PRESSURES FALL. WARM TEMPERATURES/LOW RH
READINGS ALONG WITH THESE WINDS WILL LEAD TO INCREASING FIRE DANGER
OVER THIS REGION.
...NRN HIGH PLAINS...
NWLY WINDS WILL INCREASE TO BETWEEN 20-25 MPH OVER ERN MT/FAR WRN ND
IN THE WAKE OF A COLD FRONT THIS AFTERNOON. DOWNWARD MOTION IN THE
WAKE OF AN UPPER TROUGH COMBINED WITH STEEP LOW LEVEL LAPSE RATES
WILL LIMIT SFC COOLING...BUT DEWPTS WILL FALL. ATTM IT IS
ANTICIPATED THAT THE DURATION OF CRITICALLY LOW RH READINGS LESS
THAN 20 PERCENT WILL BE LIMITED DUE TO THE LATE ARRIVAL OF THE UPPER
TROUGH. THE MOST LIKELY TIME PERIOD FOR CRITICALLY LOW RH READINGS
SHOULD BE BETWEEN 23-02Z. ISOLATED DRY TSTMS MAY DEVELOP THIS
AFTERNOON ALONG THE COLD FRONT OVER WRN ND...BUT COVERAGE IS
EXPECTED TO BE LIMITED SINCE PWAT VALUES WILL AVERAGE AROUND 1 INCH.
...CENTRAL GREAT BASIN...
ON THE WRN EDGE OF THE MONSOONAL MOISTURE PLUME...LOW LEVEL HEATING
IN A DEEPLY MIXED ENVIRONMENT WILL COMBINE WITH CONVERGENCE ALONG
THE LEE TROUGH AND AN APPROACHING WEAK VORT MAX /OFF THE CENTRAL CA
COAST/ TO SUPPORT DRY TSTMS THIS AFTERNOON/EARLY EVENING. WITH
RELATIVELY WEAK/LIMITED FORCING...THE COVERAGE OF DRY TSTMS IS
ANTICIPATED TO BE LOW ENOUGH TO PRECLUDE A CRITICAL THREAT.
...CENTRAL/SRN PLAINS...
SSELY WINDS WILL INCREASE TODAY AS THE PRESSURE GRADIENT TIGHTENS
BETWEEN A DEEPENING SFC LEE TROUGH OVER THE HIGH PLAINS AND A LARGE
AREA OF SFC HIGH PRESSURE CENTERED OVER THE OHIO VALLEY. GENERALLY
LOW DEWPTS /45-50 DEG F/ WILL EXIST OVER THE LOWER PLAINS AS A
RESULT OF SUBSIDENT AIR ON THE WRN PERIPHERY OF THE SFC HIGH
COMBINED WITH ANTECEDENT DRY SOIL CONDITIONS. WARM SFC TEMPERATURES
IN THE 90S WILL SUPPORT MIN RH READINGS FROM 20-30 PERCENT ALONG AN
AXIS EXTENDING FROM NCENTRAL TX NWD INTO ERN NEB.
HOWEVER...RELATIVELY LIGHT SSELY WINDS FROM 10-20 MPH WILL KEEP THE
FIRE WEATHER THREAT BELOW CRITICAL LEVELS.
...NRN/CENTRAL CA...
SFC DWPTS OVER MUCH OF NRN/CENTRAL CA ARE RELATIVELY LOW FOR THE
EARLY MORNING HRS /40S/. WITH THE BUILDING UPPER RIDGE AND LIMITED
MARINE LAYER PRESENT OFFSHORE...VERY WARM TEMPERATURES ARE EXPECTED
ALONG WITH LOW RH READINGS LESS THAN 15 PERCENT WELL INLAND AND RH
READINGS DOWN TO 25 PERCENT IN COASTAL VALLEYS. SUSTAINED WNWLY
WINDS WILL GENERALLY AVERAGE LESS THAN 15 MPH EXCEPT IN FAVORED SEA
BREEZE AREAS.
..CROSBIE.. 07/07/2006
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 070856
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0356 AM CDT FRI JUL 07 2006
VALID 081200Z - 091200Z
...NO CRITICAL AREAS...
...SYNOPSIS...
THE UPPER RIDGE WILL CONTINUE TO BUILD SLOWLY OVER THE WEST
TOMORROW. AS A RESULT...A DRYING TREND ALONG WITH DIMINISHING
MONSOONAL CONVECTIVE COVERAGE IS EXPECTED. ASSOCIATED WITH THE
BUILDING RIDGE WARM TEMPERATURES AND DRY AIR WILL AGAIN RESULT IN
VERY LOW RH READINGS LESS THAN 15 PERCENT OVER MUCH OF INTERIOR
CA/WRN GREAT BASIN NWD INTO THE INTERIOR PAC NW. ENOUGH MID LEVEL
MOISTURE AND CONVERGENCE WILL EXIST TO SUPPORT ANOTHER DAY OF
ISOLATED MAINLY DRY TSTMS OVER THE WRN/CENTRAL GREAT BASIN.
MEANWHILE... ANOTHER SHORTWAVE IS FCST TO TOP THE UPPER RIDGE AND
MOVING INTO THE NRN PLAINS DURING THE PERIOD. THIS SYSTEM WILL
SUPPORT ANOTHER ROUND OF MODERATE NWLY WINDS IN THE WAKE OF A COLD
FRONT OVER THE NRN PLAINS...ALTHOUGH DISPLACED SOMEWHAT ESE OF THE
DAY ONE EVENT. SLIGHTLY COOLER AIR SHOULD PRECLUDE A CRITICAL FIRE
WEATHER THREAT. ELSEWHERE...SFC HIGH PRESSURE WILL REMAIN IN CONTROL
OF MUCH OF THE ERN CONUS...WITH LOW RH READINGS AND LIGHT WINDS.
...NRN PLAINS...
NNWLY WINDS FROM 15-25 MPH WILL BE LIKELY IN THE WAKE OF A COLD
FRONT ASSOCIATED WITH A SEWD MOVING SHORTWAVE TROUGH FCST TO MOVE
OUT OF CANADA. SLIGHTLY COOLER TEMPERATURES WILL LIMIT MIN RH
READINGS TO ABOVE 25 PERCENT WHICH IS ON THE MARGINS OF A CRITICAL
THREAT. IF LATER FCSTS INDICATE LESS COOLING BUT SIMILAR SFC WIND
FIELDS...THAN THIS AREA MAY BE UPGRADED TO CRITICAL.
...CENTRAL/WRN GREAT BASIN...
THE LEE TROUGH IS FCST TO EXTEND FROM SERN ORE SWD INTO WRN/CENTRAL
NV. RELATIVELY COOL MID LEVEL TEMPERATURES/STEEP LAPSE RATES AND
RESIDUAL MID LEVEL MOISTURE WILL COMBINE WITH DRY LOW LEVELS TO
SUPPORT ANOTHER DAY OF MAINLY DRY TSTMS. WITH THE PROXIMITY OF THE
AREA TO THE UPPER RIDGE AND LIMITED LARGE SCALE FORCING...A CRITICAL
DRY TSTM THREAT IS NOT ANTICIPATED.
...CENTRAL/ERN OK AND NRN TX...
DRY LOW LEVELS WITH DEWPTS MIXING TO BETWEEN 50-55 DEG F DURING THE
AFTERNOON ALONG WITH WARM TEMPERATURES IN THE 90S WILL SUPPORT
ANOTHER DAY OF MIN RH READINGS FROM 20-30 PERCENT. SLY WINDS WILL
REMAIN LESS THAN 15 MPH PRECLUDING A CRITICAL FIRE WEATHER THREAT.
...INTERIOR CA...
AS A RESULT OF THE BUILDING UPPER RIDGE ANOTHER DAY OF HOT
TEMPERATURES WILL OCCUR INLAND AGAIN. HOWEVER IT IS ANTICIPATED THAT
THE MARINE LAYER /ALBEIT SHALLOW/ SHOULD REACH INTO SOME OF THE
COASTAL VALLEYS TOMORROW MORNING. WELL INLAND LOW RH READINGS LESS
THAN 15 PERCENT WILL OCCUR...ESPECIALLY IN THE SIERRA FOOTHILLS AND
COASTAL RANGES/INTERIOR VALLEYS. SUSTAINED WNWLY WINDS WILL
GENERALLY AVERAGE LESS THAN 15 MPH PRECLUDING A CRITICAL FIRE
WEATHER THREAT.
..CROSBIE.. 07/07/2006
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...