889  
FNUS74 KMAF 191217  
FWSMAF  
 
SPOT FORECAST FOR SAND RANCH...BLM  
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX  
717 AM CDT TUE MAR 19 2019  
 
FORECAST IS BASED ON IGNITION TIME OF 0900 MDT ON MARCH 19.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION
 
 
TEMPERATURES WILL BE PRETTY CLOSE TO NORMAL TODAY, WITH RH DROPPING  
TO AROUND 20% BY MID-AFTERNOON. SOUTHERLY 20FT WINDS WILL RANGE FROM  
AROUND 10-15 MPH THROUGH LATE THIS AFTERNOON, BEFORE BECOMING LIGHT  
AND BACKING TO THE EAST THIS EVENING. A COLD FRONT WILL PUSH THROUGH  
THE BURN AREA AROUND MIDNIGHT MDT, WITH WINDS SHIFTING TO THE NE,  
AND A FEW GUSTS TO AROUND 20-25MPH POSSIBLE LATE. RECOVERY WILL BE  
VERY GOOD AS RHS REBOUND TO NEARLY 90% OVERNIGHT. LIGHT EASTERLY  
WINDS ARE THEN EXPECTED ON WEDNESDAY, WITH INCREASED POST-FRONTAL  
MOISTURE YIELDING MIN RHS AROUND 35-40%.  
   
REST OF TODAY
 
 
SKY/WEATHER.........SUNNY (5-15 PERCENT).  
MAX TEMPERATURE.....AROUND 69.  
MIN HUMIDITY........20 PERCENT.  
WIND (20 FT)........SOUTH WINDS 7 TO 12 MPH.  
MIXING HEIGHT.......7100 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST AROUND 12 MPH.  
SMOKE DISPERSAL.....FAIR (17000 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO EXCELLENT (71000 KNOT-FT) IN THE  
AFTERNOON.  
 
TIME (MDT) 9 AM 11 AM 1 PM 3 PM  
SKY COVER.......MCLEAR MCLEAR MCLEAR MCLEAR  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE  
TSTM COV........  
TEMP............46 57 66 68  
RH..............51 34 25 21  
20 FT WIND DIR..S S SW S  
20 FT WIND SPD..13 15 13 11  
20 FT WIND GUST.  
MIX HGT (FT)....1100 2500 4800 7100  
TRANSP WIND DIR.S SW SW SW  
TRANSP WIND SPD.17 13 10 12  
VRATE KT-FT/1K..17 27 43 71  
VENTRATE CAT....POOR POOR FAIR GOOD  
   
TONIGHT
 
 
SKY/WEATHER.........PARTLY CLOUDY (20-30 PERCENT).  
MIN TEMPERATURE.....AROUND 37.  
MAX HUMIDITY........89 PERCENT.  
WIND (20 FT)........SOUTHEAST WINDS 6 TO 11 MPH SHIFTING TO THE  
NORTHEAST 14 TO 19 MPH LATE IN THE EVENING.  
MIXING HEIGHT.......100 FT AGL.  
TRANSPORT WINDS.....SOUTH AROUND 16 MPH SHIFTING TO THE NORTHEAST  
AROUND 20 MPH OVERNIGHT.  
SMOKE DISPERSAL.....EXCELLENT (71000 KNOT-FT) EARLY IN THE EVENING  
DECREASING TO POOR (1000 KNOT-FT) LATE IN THE  
NIGHT.  
 
TIME (MDT) 5 PM 8 PM 11 PM 2 AM  
SKY COVER.......MCLEAR PCLDY PCLDY PCLDY  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE  
TSTM COV........  
TEMP............69 56 48 41  
RH..............20 31 54 85  
20 FT WIND DIR..S SE NE NE  
20 FT WIND SPD..15 10 13 19  
20 FT WIND GUST. 25  
MIX HGT (FT)....6500 1700 500 1100  
TRANSP WIND DIR.SW S E NE  
TRANSP WIND SPD.13 15 15 18  
VRATE KT-FT/1K..71 22 6 18  
VENTRATE CAT....GOOD POOR POOR POOR  
   
WEDNESDAY
 
 
SKY/WEATHER.........PARTLY SUNNY (50-60 PERCENT).  
MAX TEMPERATURE.....AROUND 61.  
MIN HUMIDITY........36 PERCENT.  
WIND (20 FT)........EAST WINDS 6 TO 11 MPH.  
MIXING HEIGHT.......5500 FT AGL.  
TRANSPORT WINDS.....SOUTH AROUND 5 MPH.  
SMOKE DISPERSAL.....FAIR (15000 KNOT-FT).  
 
TIME (MDT) 5 AM 8 AM 11 AM 2 PM  
SKY COVER.......PCLDY MCLDY MCLDY PCLDY  
WEATHER COV.....  
WEATHER TYPE....NONE NONE NONE NONE  
TSTM COV........  
TEMP............38 38 51 58  
RH..............89 82 52 40  
20 FT WIND DIR..NE NE E E  
20 FT WIND SPD..17 16 11 9  
20 FT WIND GUST.22  
MIX HGT (FT)....1000 1300 3600 5000  
TRANSP WIND DIR.NE E E S  
TRANSP WIND SPD.21 16 7 3  
VRATE KT-FT/1K..18 19 21 15  
VENTRATE CAT....POOR POOR POOR POOR  
 

 
FORECASTER...PHILLIPSON  
REQUESTED BY...NATHAN CURNUTT  
TYPE OF REQUEST...PRESCRIBED  
.TAG 1903731.0/MAF  
.DELDT 03/19/19  
.FORMATTERVERSION 1.0.26  
 
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