623  
FNUS75 KTWC 302213  
FWSTWC  
 
SPOT FORECAST FOR JACOBSON...CORONADO NATIONAL FOREST  
NATIONAL WEATHER SERVICE TUCSON AZ  
313 PM MST FRI MAY 30 2025  
 
FORECAST IS BASED ON FORECAST START TIME OF 1600 MST ON MAY 30.  
   
DISCUSSION  
 
MOISTURE WILL BE STEADILY INCREASING THROUGHOUT THE WEEKEND.  
SLIGHT CHANCE (15 TO 20 PERCENT) FOR DRY THUNDERSTORMS IN THE  
AFTERNOON SATURDAY. WINDS WILL BE GENERALLY FROM THE NORTH EARLY  
SATURDAY MORNING SHIFTING TO THE SOUTHEAST BY THE AFTERNOON AT  
5 TO 12 MPH. CHANCE FOR DRY THUNDERSTORMS DIMINISHES OVERNIGHT.  
WINDS WILL SHIFT FROM THE SOUTHEAST TO THE WEST OVERNIGHT AT 8 TO  
12 MPH. SUNDAY THERE IS A CHANCE (50 TO 80 PERCENT) OF RAIN SHOWERS  
WITH EMBEDDED THUNDERSTORMS. THE GREATEST CHANCE IS IN THE  
AFTERNOON. RAINFALL AMOUNTS WITH THIS WEATHER SYSTEM WILL BE  
AROUND 0.25 INCHES TO 0.5 INCHES BY MONDAY AFTERNOON. CHANCE FOR  
SHOWERS DECREASES TO 10 TO 15 PERCENT BY MONDAY AFTERNOON.  
   
SATURDAY  
 
SKY/WEATHER.........MOSTLY SUNNY. SLIGHT CHANCE OF DRY  
THUNDERSTORMS LATE IN THE AFTERNOON.  
CHANCE OF PCPN......20 PERCENT.  
MAX TEMPERATURE.....79-82 DEGREES.  
MIN HUMIDITY........14-17 PERCENT.  
20-FOOT WINDS.......NORTH WINDS 9 TO 14 MPH SHIFTING TO THE  
SOUTHEAST 5 TO 10 MPH LATE IN THE AFTERNOON.  
GUSTY AND ERRATIC WINDS EXPECTED NEAR  
THUNDERSTORMS LATE IN THE AFTERNOON.  
MIXING HEIGHT.......2400 FT AGL INCREASING TO 13200 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 8 TO 12 KNOTS SHIFTING TO THE  
SOUTHEAST.  
 
TIME (MST) 6 AM 9 AM NOON 3 PM  
SKY (%).........73 51 19 19  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE  
TSTM COV........  
CWR.............0 0 10 10  
TEMP............62 71 77 79  
RH..............26 21 17 15  
20 FT WIND......NW 11G14 NE 8G13 E 7G13 SE 7G14  
MIX HGT (FT)....900 3300 7800 13100  
TRANSPORT WIND..NW 12 N 9 SE 9 SE 10  
   
SATURDAY NIGHT  
 
SKY/WEATHER.........PARTLY CLOUDY. SLIGHT CHANCE OF DRY  
THUNDERSTORMS IN THE EVENING.  
CHANCE OF PCPN......20 PERCENT DECREASING TO 10 PERCENT LATE IN THE  
EVENING.  
MIN TEMPERATURE.....61-64 DEGREES.  
MAX HUMIDITY........35-38 PERCENT.  
20-FOOT WINDS.......SOUTHWEST WINDS 7 TO 12 MPH SHIFTING TO THE  
WEST 9 TO 14 MPH EARLY IN THE EVENING. GUSTY  
AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS  
EARLY IN THE EVENING.  
MIXING HEIGHT.......8600 FT AGL DECREASING TO 100 FT AGL.  
TRANSPORT WINDS.....SOUTH 10 TO 12 KNOTS SHIFTING TO THE WEST OVERNIGHT.  
 
TIME (MST) 6 PM 9 PM MIDNGT 3 AM  
SKY (%).........33 34 22 22  
WEATHER COV..... S CHC  
WEATHER TYPE.... RNSHWR NONE NONE  
TSTM COV........S CHC  
CWR.............20 20 10 10  
TEMP............77 70 66 63  
RH..............17 22 28 33  
20 FT WIND......S 8G13 W 11G16 W 11G14 W 11G14  
MIX HGT (FT)....8600 100 100 100  
TRANSPORT WIND..SE 10 S 12 SW 12 W 12  
   
SUNDAY  
 
SKY/WEATHER.........MOSTLY CLOUDY WITH SCATTERED SHOWERS AND  
ISOLATED THUNDERSTORMS IN THE AFTERNOON.  
CHANCE OF PCPN......10 PERCENT INCREASING TO 80 PERCENT.  
MAX TEMPERATURE.....75-78 DEGREES.  
MIN HUMIDITY........24-27 PERCENT.  
20-FOOT WINDS.......WEST WINDS 8 TO 13 MPH. GUSTS UP TO 23 MPH LATE  
IN THE AFTERNOON. GUSTY AND ERRATIC WINDS  
EXPECTED NEAR THUNDERSTORMS LATE IN THE  
AFTERNOON.  
MIXING HEIGHT.......2100 FT AGL INCREASING TO 11400 FT AGL  
IN THE AFTERNOON.  
TRANSPORT WINDS.....WEST 9 TO 10 KNOTS SHIFTING TO THE SOUTHWEST  
LATE IN THE AFTERNOON.  
TIME (MST) 6 AM 9 AM NOON 3 PM  
SKY (%).........24 37 60 61  
WEATHER COV..... CHANCE CHANCE  
WEATHER TYPE....NONE NONE RNSHWR RNSHWR  
TSTM COV........  
CWR.............10 10 40 40  
TEMP............63 70 75 74  
RH..............35 29 25 29  
20 FT WIND......W 9G13 W 7G12 W 7G14 W 9G17  
MIX HGT (FT)....1100 5000 9600 10500  
TRANSPORT WIND..W 10 W 9 S 10 SW 12  
   
FORECAST DAYS 3 THROUGH 5  
   
MONDAY  
 
MOSTLY CLOUDY. SHOWERS AND CHANCE OF THUNDERSTORMS IN THE MORNING.  
LOWS IN THE UPPER 50S. HIGHS IN THE UPPER 60S. WEST WINDS AROUND  
11 MPH.    
TUESDAY  
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN  
THE UPPER 50S. HIGHS IN THE LOWER 70S. WEST WINDS AROUND 9 MPH.    
WEDNESDAY  
 
MOSTLY CLEAR. SLIGHT CHANCE OF SHOWERS AND THUNDERSTORMS. LOWS IN  
THE MID 50S. HIGHS IN THE LOWER 70S. WEST WINDS AROUND 8 MPH.  
 
 
FORECASTER...MALARKEY  
REQUESTED BY...CHRIS STETSON  
TYPE OF REQUEST...WILDFIRE  
.TAG 2514808.3/TWC  
.DELDT 05/30/25  
.FORMATTERVERSION 2.0.0  
.EMAIL CHRISTOPHER.STETSON@USDA.GOV,SAMUEL.LONG@USDA.GOV  
 
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