Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 300841
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0341 AM CDT THU APR 30 2009
VALID 301200Z - 011200Z
...NO CRITICAL AREAS...
...SYNOPSIS...
EARLY MORNING SATELLITE IMAGERY INDICATES AN UPPER LOW OVER ND AND
THIS FEATURE WILL CONTINUE TO MOVE NEWD INTO CANADA AS PROGRESSIVE
STREAM OF HIGHER MOMENTUM WLY/S REMAINS CONFINED TO NRN TIER OF
STATES. SURFACE ANALYSIS AT 08Z/30...SHOWS A COLD FRONT DRAPED FROM
THE UPPER MIDWEST THROUGH THE CNTRL PLAINS EXTENDING W INTO THE
CNTRL GREAT BASIN. THE ERN FRONTAL SEGMENT OVER THE CNTRL CONUS
WILL PUSH SEWD TOWARDS THE GREAT LAKES AND THE TX PANHANDLE. A
SURFACE LOW/TRIPLE POINT FEATURE WILL BE LOCATED ON THE SWRN
PERIPHERY OF THE FRONT OVER THE PLAINS...WITH ATTENDANT DRYLINE
EXTENDING SWD INTO THE TX BIG COUNTRY. HIGH PRESSURE WILL REMAIN
DOMINANT OVER THE SERN U.S.
...PARTS OF SWRN AND W-CNTRL INTERIOR FL PENINSULA...
NOT MUCH CHANGE IN WEATHER PATTERN AS SHALLOW ELY FETCH OF SOMEWHAT
MOIST NEAR SURFACE LAYER QUICKLY MIXES AS BOUNDARY LAYER
CIRCULATIONS DEVELOP IN RESPONSE TO STRONG INSOLATION. FORECAST
SOUNDINGS SHOW MIN RH FALLING AS LOW AS THE UPPER 20S WITH VALUES
AOA 30 PERCENT MORE WIDESPREAD. BOUNDARY LAYER MEAN FLOW WILL
REMAIN MODEST /BELOW 15 MPH/ AND THIS WILL TEND TO LIMIT THE
DURATION OF MODERATE SUSTAINED WINDS /APPROACHING 15 MPH/ BUT GUSTS
AROUND 20 MPH ARE POSSIBLE.
...PARTS OF NWRN CO / UNITA BASIN...
SRN PERIPHERY OF STRONG MID-LEVEL FLOW WILL GLANCE THE AREA TODAY AS
A 70 KT 500 MB JET CORE MOVES INTO WRN WY BY EVENING. FRONTAL
BOUNDARY WILL GENERALLY REMAIN QUASI-STATIONARY OVER THE ERN GREAT
BASIN/CNTRL ROCKIES AS A SURFACE LOW MEANDERS NEAR THE UT/CO BORDER.
LATEST MODEL GUIDANCE INDICATES A LOW LEVEL THERMAL/LOW RH RIDGE
DEVELOPING DURING THE AFTERNOON FROM THE LOWER GREEN RIVER VALLEY
NEWD TOWARDS THE CO DANFORTH HILLS. NEARLY DRY ADIABATIC 0-3 KM
LAPSE RATES WILL DEVELOP DURING PEAK HEATING...CONDUCIVE FOR AMPLE
BOUNDARY LAYER MIXING WITH RH FALLING INTO THE TEENS. SUSTAINED
WINDS ON THE ORDER OF 15-20 MPH ARE EXPECTED...WITH GUSTS NEAR 30
MPH AT TIMES. LOCALIZED CRITICAL CONDITIONS MAY DEVELOP INVOF
SLOTS/CANYONS AND FAVORED TERRAIN AREAS...WHERE LONGER DURATION OF
SUSTAINED WINDS AOA 20 MPH CAN BE REALIZED.
..SMITH.. 04/30/2009
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 300951
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0451 AM CDT THU APR 30 2009
VALID 011200Z - 021200Z
...NO CRITICAL AREAS...
...SYNOPSIS...
A POTENT SHORTWAVE TROUGH/SPEED MAX WILL MOVE QUICKLY EWD FROM THE
ERN PACIFIC TOWARDS THE LOWER CO RIVER VALLEY BY SATURDAY MORNING.
FURTHER E...TRAILING BELT OF STRONG WLY/S WILL MIGRATE FROM THE NRN
ROCKIES TO THE MIDWEST. IN BETWEEN THESE TWO FEATURES...SHORTWAVE
RIDGING WILL OCCUR OVER THE GREAT BASIN/SRN ROCKIES AHEAD OF
APPROACHING W COAST UPPER TROUGH. AT THE SURFACE...FRONTAL BOUNDARY
WILL PUSH EWD ACROSS THE OH VALLEY INTO THE NERN U.S. WITH THE WRN
PORTION OF THIS FEATURE PUSHING S OVER THE CNTRL PLAINS BEFORE
EVENTUALLY STALLING OVER THE SRN HIGH PLAINS. HIGH PRESSURE RIDGE
WILL REMAIN ENTRENCHED ACROSS THE WRN ATLANTIC EXTENDING WWD INTO
THE FL PENINSULA.
...PARTS OF SRN NV AND THE LOWER CO RIVER VALLEY...
LATEST DETERMINISTIC OUTPUT SHOWS INCREASING KINEMATIC FIELDS OVER
THE REGION AS APPROACHING SYSTEM FROM THE W NEARS THE CA COAST BY
FRIDAY EVENING. SUBSTANTIAL VARIABILITY EXISTS IN THE STRENGTH OF
700 MB FLOW OVER THE AREA BY 00Z/02 ACCORDING TO MODEL DATA...WHICH
IS PARTLY A FUNCTION OF SYSTEM TIMING/INTENSITY. 00Z/30 ECMWF SHOWS
35 KTS-700 MB WHEREAS GFS/NAM/ETAKF SOLUTIONS ARE WEAKER. WITH THAT
SAID...ANTECEDENTLY LOW RH IS EXPECTED OVER THE AREA WITH VALUES
BELOW 15 PERCENT PROBABLE. ATTM...SUSTAINED WINDS NEAR 20 MPH ARE
ANTICIPATED AROUND 00Z/30...BUT MAY POTENTIALLY BE HIGHER IF
AFOREMENTIONED CAVEATS ARE NEGATED OR LESSEN APPRECIABLY. WILL
WITHHOLD A CRITICAL DESIGNATION FOR THE TIME BEING DUE TO ADDITIONAL
CONCERNS REGARDING SHORT DURATION OF POTENTIAL CRITICAL CONDITIONS.
..SMITH.. 04/30/2009
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...