Storm Prediction Center
Day 1 and Day 2 Fire Weather Outlooks
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 020858
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0358 AM CDT SAT JUL 02 2005
VALID 021200Z - 031200Z
...NO CRITICAL AREAS...
...SYNOPSIS...
PRIMARILY ZONAL FLOW WILL BE DOMINANT OVER THE CONUS AT UPPER LEVELS
THROUGH THE PERIOD. A STRONG UPPER RIDGE WILL REMAIN NEARLY
STATIONARY... CENTERED OVER THE AZ/NM/MX BORDER REGION. VERY WARM
TEMPERATURES WILL AGAIN OCCUR UNDER THE INFLUENCE OF THE UPPER RIDGE
OVER THE SWRN...GREAT BASIN AND ROCKIES STATES. A PRONOUNCED
SHORTWAVE WILL MOVE ACROSS THE NRN ROCKIES INTO THE NRN PLAINS
THROUGH THE PERIOD. INCREASING SFC WINDS WILL OCCUR IN ASSOCIATION
WITH THIS SHORTWAVE TROUGH OVER THE NRN ROCKIES/NRN GREAT BASIN
LEADING TO NEAR CRITICAL FIRE WEATHER CONDITIONS IN THESE LOCATIONS.
ELSEWHERE ACROSS THE NATION...NO FIRE WEATHER CONCERNS ARE
ANTICIPATED.
...NRN GREAT BASIN...
EFFECTS OF SHORTWAVE TROUGH MOVING ACROSS THE NRN ROCKIES WILL BE TO
AID IN INCREASING SWLY WINDS OVER THE REGION TODAY. ABOVE NORMAL
TEMPERATURES COMBINED WITH SEASONABLY LOW DEWPTS WILL LEAD TO MIN RH
READINGS AROUND 15 PERCENT THIS AFTERNOON. ALTHOUGH SUSTAINED WINDS
ARE FCST TO BE ABOVE 20 MPH WITH GUSTS OVER 30 MPH ESPECIALLY OVER
THE SNAKE RIVER VALLEY...RECENT NFDRS DATA SUGGESTS THAT MOST OF THE
AREA IS NOT IN HIGH OR GREATER FIRE DANGER. THUS A CRITICAL FIRE
WEATHER OUTLOOK DOES NOT APPEAR WARRANTED DESPITE THE MODERATE
WINDS/RH READINGS FCST. IN ADDITION TO MODERATE WINDS/RH...
ISOLATED/MAINLY DRY THUNDERSTORMS ARE POSSIBLE OVER ERN ID...NRN UT
AND WRN WY/NWRN CO WHERE FORCING AHEAD OF SHORTWAVE TROUGH COMBINED
WITH STEEP MID LVL LAPSE RATES AND MID LEVEL MOISTURE ABOVE DRY LOW
LEVELS WILL BE COEXIST.
...SWRN STATES...
FCST SOUNDINGS INDICATE LITTLE CHANGE IN THE UPPER LEVELS OVER THE
SOUTHWEST...EXCEPT FOR PARTS OF SRN AZ/SERN CA...WHERE LOW-MID LEVEL
MOISTURE IS FCST TO SLOWLY MOVE INTO THE AREA AROUND THE UPPER HIGH
CENTERED OVER NRN SONORA MX. THE SENSIBLE RESULT WILL LIKELY BE
SLIGHTLY HIGHER DEWPTS THIS AFTERNOON OVER SRN AZ/SERN CA THAN SEEN
IN THE LAST FEW DAYS. THUS MIN RH READINGS ARE FCST TO RANGE FROM
AROUND 5-10 PERCENT...AS COMPARED TO 3-8 PERCENT OBSERVED YESTERDAY.
OTHERWISE SUSTAINED SWLY WINDS WILL BE AOB 15 MPH...WITH OCCASIONAL
GUSTS OVER 20 MPH DURING THE AFTERNOON HOURS. BASED ON FCST
SOUNDINGS AND LITTLE IN THE WAY OF CHANGE IN UPPER LEVELS OVER MOST
OF THE SOUTHWEST...HIGH HAINES INDICES WILL LIKELY AGAIN BE CONFINED
TO PORTIONS OF ERN AZ/NM. THIS IS WHERE DRY ADIABATIC LAPSE RATES
WILL EXTEND UPWARD OF 500 MB /15-20 KFT AGL/ SUPPORTING PLUME
DOMINATED FIRE GROWTH.
...SRN GREAT BASIN...
BREEZY CONDITIONS CAN BE EXPECTED DURING THE AFTERNOON HOURS...WITH
OCCASIONAL SWLY GUSTS OVER 25 MPH AS REGION REMAINS SOUTH OF STRONG
MID LEVEL FLOW OVER THE NRN GREAT BASIN. MIN RH READINGS ARE AGAIN
EXPECTED TO RANGE FROM 5-10 PERCENT. LACK OF DRY ADIABATIC LAPSE
RATES BEYOND 600 MB SUGGESTS THAT PLUME DOMINATED FIRE GROWTH MAY BE
SUPPRESSED TODAY.
..CROSBIE.. 07/02/2005
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 020901
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0401 AM CDT SAT JUL 02 2005
VALID 031200Z - 041200Z
...NO CRITICAL AREAS...
...SYNOPSIS...
AGAIN ON DAY TWO...ZONAL FLOW WILL BE THE DOMINANT UPPER LEVEL
FEATURE ACROSS THE CONUS. THE UPPER RIDGE WILL MOVE LITTLE FROM DAY
ONE TO DAY TWO WHILE BEING CENTERED GENERALLY SW OF ELP. VERY WARM
TEMPERATURES WILL AGAIN LEAD TO HIGH FIRE DANGERS IN ASSOCIATION
WITH THE UPPER RIDGE OVER THE SWRN STATES...GREAT BASIN AND PORTIONS
OF THE ROCKIES. HOWEVER...GENERALLY LIGHT SUSTAINED WINDS OVER THIS
REGION WILL PRECLUDE A CRITICAL FIRE WEATHER THREAT. ELSEWHERE
ACROSS THE NATION NO OTHER FIRE WEATHER CONCERNS ARE ANTICIPATED.
...SW/GREAT BASIN...
MID LEVEL MOISTURE PLUME IS FCST TO SHIFT GRADUALLY NEWD ACROSS AZ
THROUGH THE PERIOD. THE RESULT OF THIS WILL BE A CONTINUED
ADVANCEMENT OF INCREASING LOW LEVEL RH/S DURING THE AFTERNOON.
SAMPLE FCST SOUNDINGS FROM BOTH THE NAM/NAMKF SUGGEST AROUND A 5-15
DEG DEWPT RISE OVER MANY SITES INCLUDING LAS...FLG AND PHX. THE NET
RESULT...WITH TEMPERATURES NEARLY THE SAME AS ON DAY ONE...WILL BE A
RISE IN MIN RH READINGS BY 2-5 PERCENT. THUS MIN RH READINGS ARE
FCST TO RANGE FROM 7-15 PERCENT OVER MUCH OF THE AZ INTO THE FAR SRN
GREAT BASIN.
OTHERWISE...SUSTAINED WINDS ARE AGAIN FCST TO BE BELOW CRITICAL
VALUES...GENERALLY 15 MPH OR LESS OVER THE SWRN STATES INTO THE
GREAT BASIN/ROCKIES. HOWEVER...GIVEN THE DEPTH OF THE MIXED
LAYER...GUSTS OVER 25 MPH WILL BE POSSIBLE ESPECIALLY OVER NRN AZ
INTO THE GREAT BASIN/CENTRAL ROCKIES...CLOSER TO THE MODERATE
WESTERLIES ALOFT. GREATEST POTENTIAL FOR PLUME DOMINATED FIRE GROWTH
WILL RESIDE OF WRN NM NWD INTO WRN CO/ERN UT WHERE NEAR DRY
ADIABATIC LAPSE RATES WILL EXTEND UPWARD TO 500 MB.
..CROSBIE.. 07/02/2005
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
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