630  
FNUS73 KABR 081005  
FWSABR  
 
SPOT FORECAST FOR JESSON WPA...USFWS  
NATIONAL WEATHER SERVICE ABERDEEN SD  
505 AM CDT FRI MAY 8 2026  
 
FORECAST IS BASED ON IGNITION TIME OF 0600 CDT ON MAY 08.  
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER  
SERVICE.  
   
DISCUSSION  
WINDS SHIFT TO THE NORTHWEST BY NOON AND INCREASE  
WITH GUSTS UP TO 35 MPH. MINIMUM RH WILL HOVER NEAR 20 PERCENT, SO  
CANNOT RULE OUT WIND AND RH CONDITIONS MEETING RED FLAG WARNING  
CRITERIA FOR AN HOUR OR TWO BEFORE WINDS DIMINISH LATE THIS  
AFTERNOON.  
   
TODAY  
 
SKY/WEATHER.........PARTLY SUNNY (35-45 PERCENT) THEN BECOMING  
MOSTLY SUNNY (5-15 PERCENT).  
CWR.................0 PERCENT.  
CHANCE OF PCPN......0 PERCENT.  
CHANCE OF LIGHTNING.1 PERCENT.  
MAX TEMPERATURE.....AROUND 73.  
MIN HUMIDITY........20 PERCENT.  
WIND (20 FT)........SOUTHWEST WINDS 6 TO 9 MPH SHIFTING TO THE WEST  
9 TO 12 MPH LATE IN THE MORNING, THEN SHIFTING  
TO THE NORTHWEST 13 TO 22 MPH LATE IN THE  
MORNING INCREASING TO AROUND 23 MPH LATE IN THE  
AFTERNOON.  
MIXING HEIGHT.......400-9300 FT AGL.  
TRANSPORT WINDS.....SOUTHWEST 10 TO 13 MPH SHIFTING TO THE  
NORTHWEST 14 TO 22 MPH LATE IN THE MORNING,  
THEN INCREASING TO 25 TO 28 MPH IN THE  
AFTERNOON.  
SMOKE DISPERSAL.....POOR (3300 KNOT-FT) INCREASING TO EXCELLENT  
(200900 KNOT-FT).  
 
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........52 41 23 3 8 10 15 17 10 3 9 15  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0  
CHC OF LTNG (%).0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............37 38 43 48 58 63 67 70 71 71 72 73  
RH..............63 64 57 51 39 29 25 25 29 29 22 20  
20 FT WIND DIR..SW SW SW W NW NW NW NW NW NW NW NW  
20 FT WIND SPD..6 7 9 9 12 13 16 20 21 22 23 23  
20 FT WIND GUST.9 12 14 15 17 21 24 29 31 32 33 32  
MIX HGT (KFT)...0.4 0.4 0.4 0.9 1.4 4.8 7.8 9.1 9.3 9.3 9.3 9.2  
SMOKE DISPERSAL.PR PR PR PR PR GD VGD EXL EXL EXL EXL EXL  
   
TONIGHT  
 
SKY/WEATHER.........MOSTLY CLEAR (20-30 PERCENT) THEN BECOMING  
MOSTLY CLOUDY (70-80 PERCENT).  
CWR.................3 PERCENT.  
CHANCE OF PCPN......10 PERCENT.  
CHANCE OF LIGHTNING.5 PERCENT.  
MIN TEMPERATURE.....AROUND 43.  
MAX HUMIDITY........82 PERCENT.  
WIND (20 FT)........NORTHWEST WINDS 12 TO 21 MPH SHIFTING TO THE  
WEST 7 TO 8 MPH LATE IN THE EVENING, THEN  
SHIFTING TO THE SOUTHWEST 8 TO 10 MPH LATE IN  
THE EVENING SHIFTING TO THE NORTH AROUND 10 MPH  
AFTER 3 AM.  
MIXING HEIGHT.......400-8600 FT AGL.  
TRANSPORT WINDS.....NORTHWEST 23 TO 26 MPH DECREASING TO 9 TO 13  
MPH EARLY IN THE EVENING, THEN SHIFTING TO THE  
WEST 8 TO 14 MPH IN THE LATE EVENING AND  
OVERNIGHT SHIFTING TO THE NORTH AFTER 3 AM.  
SMOKE DISPERSAL.....EXCELLENT (198100 KNOT-FT) DECREASING TO POOR  
(2900 KNOT-FT).  
 
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM  
SKY (%).........10 15 28 26 29 23 40 64 87 74 88 74  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 10 10 10 10 10 0 0  
CHC OF LTNG (%).0 0 0 0 0 10 10 0 0 0 0 0  
TEMP............72 71 67 57 54 52 51 50 49 48 46 45  
RH..............21 26 30 45 50 54 54 58 61 65 71 76  
20 FT WIND DIR..NW NW NW NW W SW SW SW W NW N N  
20 FT WIND SPD..21 16 12 8 7 8 9 10 10 10 10 10  
20 FT WIND GUST.30 25 17 13 10 12 14 15 16 16 17 17  
MIX HGT (KFT)...8.6 7.0 0.8 0.6 0.4 0.4 0.4 0.4 0.5 0.6 0.6 0.7  
SMOKE DISPERSAL.EXL VGD PR PR PR PR PR PR PR PR PR PR  
   
SATURDAY  
 
SKY/WEATHER.........PARTLY SUNNY (60-70 PERCENT).  
CWR.................0 PERCENT.  
CHANCE OF PCPN......0 PERCENT.  
CHANCE OF LIGHTNING.1 PERCENT.  
MAX TEMPERATURE.....AROUND 64.  
MIN HUMIDITY........29 PERCENT.  
WIND (20 FT)........NORTH WINDS 12 TO 17 MPH.  
MIXING HEIGHT.......700-7500 FT AGL.  
TRANSPORT WINDS.....NORTH 13 TO 18 MPH.  
SMOKE DISPERSAL.....POOR (8100 KNOT-FT) EARLY IN THE MORNING  
INCREASING TO FAIR (46000 KNOT-FT) IN THE  
AFTERNOON INCREASING TO GOOD (95300 KNOT-FT)  
EARLY IN THE MORNING INCREASING TO VERY GOOD  
(111900 KNOT-FT) IN THE AFTERNOON.  
 
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM  
SKY (%).........53 53 52 54 69 60 54 50 54 60 73 82  
WEATHER COV.....  
WEATHER TYPE....  
TSTM COV........  
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0  
CHC OF LTNG (%).0 0 0 0 0 0 0 0 0 0 0 0  
TEMP............44 43 45 48 53 55 58 61 62 62 63 63  
RH..............79 82 76 71 57 51 44 36 35 34 31 30  
20 FT WIND DIR..N N N N N N N N N N N N  
20 FT WIND SPD..12 14 15 16 16 16 16 16 17 16 16 16  
20 FT WIND GUST.18 21 22 23 23 23 24 25 25 25 24 24  
MIX HGT (KFT)...0.7 0.8 1.7 2.3 3.1 3.7 4.5 5.0 6.0 6.5 6.4 7.5  
SMOKE DISPERSAL.PR PR PR PR FR FR GD GD GD VGD GD VGD  
 
 
FORECASTER...WISE  
REQUESTED BY...JADE DRAUSE  
TYPE OF REQUEST...PRESCRIBED  
.TAG 2612796.0/ABR  
.DELDT 05/08/26  
.FORMATTERVERSION 2.0.0  
.EMAIL JADE_DRAUSE@FWS.GOV  
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