FNUS75 KTWC 202200
FWSTWC

SPOT FORECAST FOR TAA TRIENNIAL DRILL...TUCSON AIRPORT AUTHORITY FIRE DEPT
NATIONAL WEATHER SERVICE TUCSON AZ
300 PM MST SUN MAR 20 2011

...TEST...PRACTICE DRILL...

FORECAST IS BASED ON INCIDENT TIME OF 1450 MST ON MARCH 20.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE.

...RED FLAG WARNING IN EFFECT FROM 10 AM TO 7 PM MST MONDAY...

.DISCUSSION...
A STRONG LOW PRESSURE SYSTEM OFF THE CENTRAL CALIFORNIA COAST WILL
BEGIN TO MOVE INLAND TONIGHT. THIS WILL RESULT IN A TIGHTENING
PRESSURE GRADIENT ACROSS SOUTHEAST ARIZONA AND INCREASED WINDS THE
REST OF THIS AFTERNOON AND EARLY EVENING. AS THE LOW PRESSURE SYSTEM
MOVES EAST ACROSS THE REGION ON MONDAY...THIS WILL RESULT IN EVEN
STRONGER WINDS. CRITICAL FIRE WEATHER THRESHOLDS ARE EXPECTED TO BE
MET ON MONDAY ACROSS MUCH OF SOUTHEAST ARIZONA AND THEREFORE THE FIRE
WEATHER WATCH THAT WAS IN EFFECT HAS BEEN UPGRADED TO A RED FLAG
WARNING. EXPECT SOME SHOWERS TO MOVE INTO THE AREA LATE MONDAY AND
MONDAY NIGHT.

.TONIGHT...

SKY/WEATHER.........MOSTLY CLOUDY.
MIN TEMPERATURE.....53 TO 58 DEGS.
MAX HUMIDITY........14 TO 19 PCT.
20-FOOT WINDS.......SOUTHWEST 8 TO 16 MPH. GUSTS UP TO 30 MPH IN THE
                    EVENING.
LAL.................1.
CHANCE OF RAIN......0 PERCENT.
HAINES INDEX........4 LOW.
MIXING HEIGHT.......400 FT AGL.
MIXING WINDS........SOUTHWEST AROUND 15 KNOTS.

.MONDAY...

SKY/WEATHER.........MOSTLY CLOUDY. AREAS OF BLOWING DUST IN THE
                    AFTERNOON. SLIGHT CHANCE OF SHOWERS IN THE
                    AFTERNOON.
MAX TEMPERATURE.....73 TO 78 DEGS.
MIN HUMIDITY........8 TO 13 PCT.
20-FOOT WINDS.......BREEZY. SOUTH 6 TO 11 MPH INCREASING TO 12 TO
                    22 MPH WITH GUSTS TO AROUND 40 MPH IN THE
                    AFTERNOON.
LAL.................1.
CHANCE OF RAIN......20 PERCENT.
HAINES INDEX........4 LOW.
MIXING HEIGHT.......400 FT AGL.
MIXING WINDS........SOUTH AROUND 22 KNOTS.

$$
FORECASTER...FIRE WEATHER FORECASTER
REQUESTED BY...DRILL COORDINATOR
TYPE OF REQUEST...HAZMAT
.TAG 20110320.TAATR.02/TWC