424
FNUS75 KTWC 192326
FWSTWC
SPOT FORECAST FOR BIG CASA...USFS/CNF
NATIONAL WEATHER SERVICE TUCSON AZ
426 PM MST FRI JUN 19 2026
FORECAST IS BASED ON FORECAST START TIME OF 1800 MST ON JUNE 19.
DISCUSSION
CLEAR SKIES AND TEMPERATURES AROUND NORMAL BOTH
SATURDAY AND SUNDAY. DRY WITH MINIMUM RELATIVE HUMIDITY THIS WEEKEND
10-15 PERCENT. SOUTHWEST WINDS 10-15 MPH SATURDAY AFTERNOON/EARLY EVENING
WITH GUSTS TO 25 MPH AND SOUTHWEST TO WEST WINDS AT 10-15 MPH SUNDAY
AFTERNOON/EARLY EVENING WITH GUSTS TO 25 MPH. OTHERWISE, LIGHT SOUTHWEST
WINDS LATE EVENING THROUGH THE MORNING HOURS.
TONIGHT
SKY/WEATHER.........CLEAR.
CHANCE OF PCPN......0 PERCENT.
MIN TEMPERATURE.....58-61 DEGREES.
MAX HUMIDITY........25-28 PERCENT.
20-FOOT WINDS.......SOUTHWEST WINDS 9 TO 13 MPH WITH GUSTS TO 22 MPH
IN THE EARLY EVENING, DECREASING TO 4 TO 7 MPH
OVERNIGHT.
MIXING HEIGHT.......7600 FT AGL DECREASING TO 400 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 7 TO 13 KNOTS.
TIME (MST) 6 PM 9 PM MIDNGT 3 AM
SKY (%).........2 6 2 1
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE
TSTM COV........
CWR.............0 0 0 0
TEMP............71 65 64 61
RH..............21 25 25 25
20 FT WIND......SW 11G20 SW 9G18 SW 8 SW 4
MIX HGT (FT)....7600 600 500 500
TRANSPORT WIND..W 12 W 12 SW 9 W 8
SATURDAY
SKY/WEATHER.........SUNNY.
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....73-76 DEGREES.
MIN HUMIDITY........12-15 PERCENT.
20-FOOT WINDS.......SOUTHWEST WINDS 4 TO 7 MPH INCREASING TO 12 TO 15 MPH
WITH GUSTS TO 25 MPH.
MIXING HEIGHT.......1200 FT AGL INCREASING TO 8200 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 6 TO 15 KNOTS INCREASING TO 15 TO 18
KNOTS LATE IN THE MORNING.
TIME (MST) 6 AM 9 AM NOON 3 PM
SKY (%).........2 0 3 1
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE
TSTM COV........
CWR.............0 0 0 0
TEMP............62 67 73 74
RH..............23 16 16 14
20 FT WIND......SW 6 SW 7G16 SW 12G20 SW 14G24
MIX HGT (FT)....500 3800 7300 7400
TRANSPORT WIND..SW 6 SW 13 SW 17 SW 16
SATURDAY NIGHT
SKY/WEATHER.........MOSTLY CLEAR.
CHANCE OF PCPN......0 PERCENT.
MIN TEMPERATURE.....58-61 DEGREES.
MAX HUMIDITY........19-22 PERCENT.
20-FOOT WINDS.......SOUTHWEST WINDS 9 TO 13 MPH WITH GUSTS TO
22 MPH IN THE EARLY EVENING SHIFTING TO THE
SOUTH 5 TO 7 MPH AFTER 3 AM.
MIXING HEIGHT.......5800 FT AGL DECREASING TO 400 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 7 TO 13 KNOTS.
TIME (MST) 6 PM 9 PM MIDNGT 3 AM
SKY (%).........10 7 4 1
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE
TSTM COV........
CWR.............0 0 0 0
TEMP............71 65 63 60
RH..............14 18 20 20
20 FT WIND......SW 12G20 SW 10G16 SW 9 S 6
MIX HGT (FT)....5800 600 500 500
TRANSPORT WIND..SW 13 SW 11 SW 10 S 7
SUNDAY
SKY/WEATHER.........SUNNY.
CHANCE OF PCPN......0 PERCENT.
MAX TEMPERATURE.....74-77 DEGREES.
MIN HUMIDITY........10-13 PERCENT.
20-FOOT WINDS.......SOUTH WINDS 4 TO 7 MPH BECOMING WEST TO SOUTHWEST 11
TO 14 MPH WITH GUSTS TO 23 MPH.
MIXING HEIGHT.......2100 FT AGL INCREASING TO 8500 FT AGL.
TRANSPORT WINDS.....SOUTHWEST 7 TO 15 KNOTS SHIFTING TO THE WEST 13
TO 14 KNOTS LATE IN THE AFTERNOON.
TIME (MST) 6 AM 9 AM NOON 3 PM
SKY (%).........2 0 1 3
WEATHER COV.....
WEATHER TYPE....NONE NONE NONE NONE
TSTM COV........
CWR.............0 0 0 0
TEMP............61 67 73 75
RH..............18 14 11 11
20 FT WIND......S 5 SW 6G13 SW 11G18 WSW 13G21
MIX HGT (FT)....500 3500 7400 8500
TRANSPORT WIND..S 7 SW 11 SW 15 SW 15
FORECASTER...RASMUSSEN
REQUESTED BY...SARAH TOLSON
TYPE OF REQUEST...WILDFIRE
.TAG 2615845.0/TWC
.DELDT 06/19/26
.FORMATTERVERSION 2.0.0
.EMAIL AZTDC@FIRENET.GOV
VISIT US ON FACEBOOK...TWITTER...YOUTUBE...AND AT WEATHER.GOV/TUCSON
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page