Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 151308
DAY 1 FIRE WEATHER OUTLOOK CORR 1
NWS STORM PREDICTION CENTER NORMAN OK
0808 AM CDT WED AUG 15 2007
VALID 151200Z - 161200Z
CORRECTED FOR GRAPHIC
...CRITICAL FIRE WEATHER AREA FOR NRN CA...NWRN NV AND SRN OR...FOR
LOW RH AND STRONG GUSTY WINDS...
...CRITICAL FIRE WEATHER AREA FOR NERN CA...NWRN NV...ERN OR...EXTRM
S WA AND EXTRM WESTERN ID...FOR DRY THUNDERSTORM CONDITIONS...
...SYNOPSIS...
A TROUGH IN THE GREAT LAKES REGION WILL BE SEPARATED BY A RIDGE OVER
THE NORTHERN ROCKIES AND ANOTHER TROUGH APPROACHING THE PACIFIC
NORTHWEST. AHEAD OF THE TROUGH IN THE NORTHWEST...MID-LEVEL MOISTURE
WILL ADVECT INTO THE CENTRAL ROCKIES BRINGING A DRY THUNDERSTORM
THREAT...AND FURTHER WEST...LOW RELATIVE HUMIDITY VALUES AND STRONG
GUSTY SURFACE WINDS WILL CREATE A CRITICAL FIRE WEATHER THREAT IN
THE REGION. ELSEWHERE...HOT AND DRY CONDITIONS IN THE GREAT PLAINS
AND UNSEASONABLY WARM TEMPERATURES IN THE SOUTHEAST UNITED STATES
WILL CONTINUE.
...CRITICAL FIRE WEATHER AREA - NRN CA...NWRN NV AND SRN OR...
PRIMARY CONDITIONS: LOW RELATIVE HUMIDITY VALUES AND STRONG GUSTY
WINDS...LONG TERM DROUGHT
SURFACE WINDS AHEAD OF AN APPROACHING TROUGH WILL INCREASE OVER THE
AREA DURING THE AFTERNOON AND WILL APPROACH 15-25 MPH.
ADDITIONALLY...RELATIVE HUMIDITY VALUES WILL DROP TO BELOW 20
PERCENT...WITH A MINIMUM NOTED ESPECIALLY OVER SACRAMENTO VALLEY.
STEEP MID-LEVEL LAPSE RATES OVER THE AREA OF LOWEST RELATIVE
HUMIDITIES ARE FORECAST AS WELL...SO THE HIGHEST WIND GUSTS ARE
EXPECTED TO BE IN NE CALIFORNIA. PORTIONS OF THIS REGION ARE ALSO
UNDER A SUSTAINED DROUGHT...AND A CRITICAL FIRE WEATHER THREAT WILL
EXIST.
...CRITICAL FIRE WEATHER AREA - NWRN NV...ERN OR...EXTRM S WA AND
EXTRM WESTERN ID...
PRIMARY CONDITIONS: DRY THUNDERSTORM CONDITIONS
MID-LEVEL MOISTURE WILL INCREASE AHEAD OF THE SAME UPPER-LEVEL
TROUGH AS IT MOVES INTO THE PACIFIC NORTHWEST. THIS MOISTURE WILL
HELP SUPPORT SCATTERED ELEVATED THUNDERSTORMS THROUGHOUT THE REGION
AND GIVEN THE FORECAST LOW SURFACE RELATIVE HUMIDITY VALUES...DRY
THUNDERSTORMS ARE POSSIBLE. STORMS THAT FORM IN THIS ENVIRONMENT
WILL LIKELY CAUSE SUDDEN WIND SHIFTS AS ERRATIC OUTFLOW INTERACTS
WITH THE COMPLEX TERRAIN...AND POSSIBLE NEW FIRES FROM LIGHTNING
STRIKES.
...NORTH AND SOUTH DAKOTA...
SURFACE WINDS BEHIND A COLD FRONT MOVING SOUTHWARD OUT OF THE REGION
WILL INCREASE TO 15-25 MPH DURING THE AFTERNOON. RELATIVE HUMIDITY
VALUES WILL BE LOW...AROUND 15 TO 25 PERCENT...AND TEMPERATURES WILL
CLIMB TO NEAR THE UPPER 80S...APPROACHING CRITICAL FIRE WEATHER
CONDITIONS.
...SRN NV...
SOME ELEVATED DRY THUNDERSTORMS ARE POSSIBLE HERE GIVEN THE
MID-LEVEL MOISTURE VALUES...COVERAGE IS EXPECTED TO BE ISOLATED
GIVEN THE LACK OF A SIGNIFICANT STORM SYSTEM TO TRIGGER CONVECTION.
...OK AND TX PANHANDLES...
VERY HOT TEMPERATURES...ABOVE 100 DEGREES F...AND LOW RELATIVE
HUMIDITY VALUES COUPLED WITH STRONG AND GUSTY WINDS WILL BRING THIS
AREA CLOSE TO A CRITICAL FIRE WEATHER THREAT. FORECAST RELATIVE
HUMIDITY VALUES ARE AROUND 20 TO 25 PERCENT.
...SOUTHEASTERN STATES...
UNSEASONABLY HOT SURFACE TEMPERATURES...AND LOW RELATIVE HUMIDITY
VALUES WILL AGAIN BE OBSERVED IN THIS REGION. LACK OF SIGNIFICANTLY
HIGH SURFACE WIND SPEEDS WILL MINIMIZE THE FIRE WEATHER RISK.
..LEVIT.. 08/15/2007
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
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FNUS22 KWNS 151309
DAY 2 FIRE WEATHER OUTLOOK CORR 1
NWS STORM PREDICTION CENTER NORMAN OK
0809 AM CDT WED AUG 15 2007
VALID 161200Z - 171200Z
CORRECTED FOR GRAPHIC
...CRITICAL FIRE WEATHER AREA FOR MOST OF NV...SW ID...SE OR...EXTRM
NE CA AND WESTERN UT...FOR LOW RH AND STRONG AND GUSTY WINDS...
...CRITICAL FIRE WEATHER AREA FOR EASTERN ID...WESTERN MT...NW
WY...FOR DRY THUNDERSTORMS...
...SYNOPSIS...
A TROUGH IN THE GREAT LAKES REGION WILL CONTINUE TO MOVE EASTWARD
DURING THE FORECAST PERIOD...WHILE ANOTHER TROUGH ENTERS THE PACIFIC
NORTHWEST. AHEAD OF THIS TROUGH IN THE WEST...CONDITIONS WILL BECOME
FAVORABLE FOR DRY THUNDERSTORMS AND A CRITICAL FIRE WEATHER THREAT
IN THE CENTRAL ROCKIES...AND ANOTHER THREAT WILL EXIST SOUTH OF THAT
TROUGH DUE TO STRONG SURFACE WIND SPEEDS...LOW RELATIVE HUMIDITY
VALUES...AND HIGH SURFACE TEMPERATURES. ELSEWHERE...A TROPICAL
SYSTEM WILL MOVE NORTH INTO TEXAS BRINGING PRECIPITATION TO THE
REGION...AND HOT WEATHER WILL CONTINUE IN THE SOUTHEAST UNITED
STATES.
...CRITICAL FIRE WEATHER AREA - MOST OF NV...SW ID...SE OR...EXTRM
NE CA AND WESTERN UT...
PRIMARY CONDITIONS: LOW RELATIVE HUMIDITY VALUES...STRONG AND GUSTY
SFC WINDS...LONG TERM DROUGHT
SURFACE WIND SPEEDS WILL INCREASE DURING THE AFTERNOON AHEAD OF THE
APPROACH OF AN UPPER-LEVEL TROUGH...WITH VALUES AROUND 15-25 MPH AND
HIGHER GUSTS. AFTERNOON TEMPERATURES WILL BE VERY WARM WITH
OBSERVED VALUES LIKELY IN THE UPPER 90S F...AND RELATIVE HUMIDITY
VALUES WILL BE VERY LOW...VARYING BETWEEN 10 AND 20 PERCENT. GIVEN
THESE CONDITIONS AND THE LONG-TERM DROUGHT IN THE REGION...CRITICAL
FIRE WEATHER CONDITIONS WILL EXIST...ESPECIALLY DURING THE AFTERNOON
WHEN THE CRITERIA IS MAXIMIZED.
...CRITICAL FIRE WEATHER AREA - EASTERN ID...WESTERN MT...NW WY...
PRIMARY CONDITIONS: DRY THUNDERSTORMS
VERTICAL MOTION WILL INCREASE OVER THE NORTHERN ROCKIES AHEAD OF THE
APPROACHING TROUGH IN THE PACIFIC NORTHWEST...AND A PLUME OF
MID-LEVEL MONSOONAL MOISTURE WILL ADVECT NORTHWARD INTO THE REGION.
AS IN PREVIOUS DAYS...SCATTERED...ELEVATED...DRY THUNDERSTORMS WILL
BE POSSIBLE DUE TO THE UNSTABLE ENVIRONMENT AND LOW SURFACE RELATIVE
HUMIDITY VALUES. LIGHTNING FROM THESE STORMS COULD CAUSE NEW FIRES
DUE TO THE DROUGHT AND DRY FUELS IN THE REGION...AND DOWNDRAFTS WILL
CAUSE RAPIDLY CHANGING SURFACE WIND CONDITIONS.
...SOUTHEAST UNITED STATES...
SURFACE TEMPERATURES WILL AGAIN CLIMB TO UNSEASONABLY HIGH
VALUES...IN THE MID TO UPPER 90S F...THROUGHOUT THE REGION. RELATIVE
HUMIDITY VALUES ARE FORECAST TO BE FAIRLY MODERATE WITH VALUES
AROUND 25 TO 30 PERCENT...AND WIND SPEEDS WILL BE LIGHT...MINIMIZING
THE OVERALL FIRE WEATHER RISK. HOWEVER...FUELS ARE LIKELY DRYING DUE
TO THE SUSTAINED HIGH SURFACE TEMPERATURES.
..LEVIT.. 08/15/2007
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...