680  
FNUS74 KOUN 210751  
FWSOUN  
 
SPOT FORECAST FOR CONCHO SEVERITY...CHEYENNE AND ARAPAHO TRIBES  
NATIONAL WEATHER SERVICE NORMAN OK  
251 AM CDT MON SEP 21 2026  
 
FORECAST IS BASED ON FORECAST START TIME OF 0844 CDT ON SEPTEMBER 21.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
 
PLEASE CONTACT OUR OFFICE AT (405) 325-3816 IF YOU HAVE QUESTIONS  
OR CONCERNS WITH THIS FORECAST.  
   
DISCUSSION  
 
COOLER TEMPERATURES ARE EXPECTED TODAY INTO TUESDAY BEHIND A COLD  
FRONT WITH NORTH-NORTHEAST WINDS GENERALLY BETWEEN 5-15 MPH AND  
GUSTS UP TO 20 MPH (STRONGEST DURING DAYTIME PEAK MIXING PERIOD  
LATE MORNING-LATE AFTERNOON). MINIMUM AFTERNOON RELATIVE  
HUMIDITIES SHOULD DROP TO 40-45% WITH EXCELLENT OVERNIGHT RECOVERY  
OVER 80%.  
   
REST OF TODAY  
 
SKY/WEATHER.........PARTLY SUNNY THEN BECOMING MOSTLY CLOUDY LATE  
IN THE MORNING THEN BECOMING PARTLY SUNNY THEN  
BECOMING MOSTLY SUNNY EARLY IN THE AFTERNOON  
THEN BECOMING SUNNY.  
MAX TEMPERATURE.....AROUND 86.  
MIN HUMIDITY........46 PERCENT.  
SURFACE WINDS (MPH).NORTHEAST WINDS 10 TO 13 MPH.  
 
TIME (CDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........70 67 79 62 63 62 34 18 17 16  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............66 68 73 76 78 80 83 84 85 85  
RH..............97 93 79 69 64 58 51 49 46 46  
SURFACE WND DIR.NE N N N N N N NE NE NE  
SURFACE WND SPD.10 12 12 13 13 13 13 12 12 12  
SURFACE WND GST.16 17 17 20 20 20 20 17 17 17  
   
TONIGHT  
 
SKY/WEATHER.........MOSTLY CLEAR THEN BECOMING PARTLY CLOUDY  
OVERNIGHT THEN BECOMING MOSTLY CLEAR THEN  
BECOMING MOSTLY CLOUDY AFTER 3 AM.  
MIN TEMPERATURE.....AROUND 63.  
MAX HUMIDITY........100 PERCENT.  
SURFACE WINDS (MPH).NORTHEAST WINDS 6 TO 12 MPH.  
 
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........9 7 4 14 14 19 39 39 20 17 48 56  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............84 83 80 75 73 72 70 69 69 68 66 65  
RH..............48 49 54 66 71 76 78 81 81 84 90 93  
SURFACE WND DIR.N N NE NE NE NE NE NE NE NE NE NE  
SURFACE WND SPD.12 12 9 9 8 8 7 7 7 7 7 6  
SURFACE WND GST.17 17 14 14 13 13 10 10 10 10 10 9  
   
TUESDAY  
 
SKY/WEATHER.........PARTLY SUNNY THEN BECOMING MOSTLY SUNNY EARLY  
IN THE MORNING THEN BECOMING PARTLY SUNNY THEN  
BECOMING MOSTLY SUNNY LATE IN THE MORNING THEN  
BECOMING SUNNY THEN BECOMING MOSTLY SUNNY LATE  
IN THE AFTERNOON.  
MAX TEMPERATURE.....AROUND 86.  
MIN HUMIDITY........41 PERCENT.  
SURFACE WINDS (MPH).NORTHEAST WINDS 7 TO 13 MPH.  
 
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........52 39 56 52 45 40 21 17 22 11 9 33  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
TEMP............64 63 64 67 72 75 78 80 83 84 85 85  
RH..............97 100 100 93 79 69 60 54 48 46 43 41  
SURFACE WND DIR.NE NE NE NE NE NE NE NE NE NE NE NE  
SURFACE WND SPD.7 7 8 8 9 12 12 12 12 13 13 13  
SURFACE WND GST.10 10 13 13 14 17 17 17 17 20 20 20  
 
 
FORECASTER...WARE  
REQUESTED BY...JEFFERY ELIZONDO  
TYPE OF REQUEST...OTHER  
.TAG 2622066.4/OUN  
.DELDT 09/21/26  
.FORMATTERVERSION 2.0.0  
.EMAIL JELIZONDO@C-A-TRIBES.ORG  
CLICK HERE TO GO TO PREVIOUS BULLETINS.
The Nexlab OK Page
The Nexlab TX Page
Main Text Page